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WO2015053443A1 - Filter having nano-fiber on both surfaces of substrate thereof and method for manufacturing same - Google Patents

Filter having nano-fiber on both surfaces of substrate thereof and method for manufacturing same Download PDF

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Publication number
WO2015053443A1
WO2015053443A1 PCT/KR2014/001578 KR2014001578W WO2015053443A1 WO 2015053443 A1 WO2015053443 A1 WO 2015053443A1 KR 2014001578 W KR2014001578 W KR 2014001578W WO 2015053443 A1 WO2015053443 A1 WO 2015053443A1
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WO
WIPO (PCT)
Prior art keywords
polyvinylidene fluoride
substrate
nonwoven fabric
nanofiber nonwoven
electrospinning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2014/001578
Other languages
French (fr)
Korean (ko)
Inventor
박종철
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lime Co Ltd
Original Assignee
Finetex Ene Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020130119490A external-priority patent/KR101563596B1/en
Priority claimed from KR1020130119494A external-priority patent/KR101543406B1/en
Priority claimed from KR1020130119489A external-priority patent/KR101521601B1/en
Priority claimed from KR1020130119492A external-priority patent/KR101543405B1/en
Priority claimed from KR1020130119488A external-priority patent/KR101521600B1/en
Priority claimed from KR1020130119486A external-priority patent/KR101543403B1/en
Priority claimed from KR1020130119491A external-priority patent/KR101543404B1/en
Priority claimed from KR1020130119493A external-priority patent/KR101615678B1/en
Priority claimed from KR1020130119487A external-priority patent/KR101579936B1/en
Priority claimed from KR1020130119485A external-priority patent/KR101543402B1/en
Application filed by Finetex Ene Inc filed Critical Finetex Ene Inc
Publication of WO2015053443A1 publication Critical patent/WO2015053443A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
    • D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/08—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons
    • D01F6/12—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons from polymers of fluorinated hydrocarbons
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4318—Fluorine series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0654—Support layers

Definitions

  • the present invention relates to a filter including nanofibers on both sides of a substrate and a method for manufacturing the same, and to a filter including nanofiber nonwoven fabric on both sides of a substrate prepared by electrospinning a polymer spinning solution on both sides of the substrate and a method of manufacturing the same.
  • a filter is a filtration device that filters foreign substances in a fluid and is classified into a liquid filter and an air filter.
  • air filters are used in semiconductor manufacturing, computer equipment assembly, hospitals, etc. to remove biologically harmful substances such as microparticles such as dust in the air, bioparticles such as bacteria and molds, and bacteria to prevent defects of high-tech products with the development of high-tech industries. It is used in food processing factories, agriculture, forestry and fisheries, and is widely used in dusty workplaces and thermal power plants.
  • the gas turbine used in the thermal power plant sucks and purifies the purified air from the outside, and then mixes the compressed air with the fuel by injecting it into the combustor and burns the mixed air and the fuel to burn the combustion gas of high temperature and high pressure. It is a kind of rotary internal combustion engine which obtains a rotational force by spraying on the vane of a turbine after obtaining. Since the gas turbine is composed of very precise parts, periodic maintenance is performed, and at this time, an air filter is used for pretreatment to purify the air in the compressor.
  • the air filter takes the combustion air sucked into the gas turbine in the air, it is possible to supply purified air by preventing foreign substances such as dust and dust contained in the air from penetrating into the filter medium.
  • large particles of foreign matter accumulate on the surface of the filter medium and form a filter cake on the surface of the filter medium, and fine particles accumulate in the filter medium to block pores of the filter medium.
  • the particles accumulate on the surface of the filter medium, there is a problem of increasing the pressure loss of the filter and reducing the life.
  • the conventional air filter used the principle that the particles are collected by the electrostatic force by applying the static electricity to the fiber assembly constituting the filter medium, and has measured the efficiency of the filter according to the principle.
  • EN779 the European air filter classification standard, decided to exclude the efficiency of the filter by the electrostatic effect in 2012. As a result of excluding the electrostatic effect and measuring the efficiency, the actual efficiency of the filter is reduced by more than 20%. Turned out.
  • the present invention is to solve the above problems, an object of the present invention is to provide a filter and a method of manufacturing the same by electrospinning the polymer spinning solution to form a nanofiber nonwoven fabric laminated on each side of the substrate.
  • the process of laminating the nanofiber nonwoven fabric on both sides of the substrate includes a process of rotating the top and bottom of the fabric by 180 °, thereby simplifying the manufacturing process, and introducing the unit concept to the electrospinning apparatus, thereby mass production. It aims at manufacturing this possible filter.
  • a cellulose substrate, a first polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning on an upper surface of the cellulose substrate, and an electrospinning on a lower surface of the cellulose substrate are formed.
  • the first and second polyvinylidene fluoride nanofiber nonwoven fabrics are made of a solution in which polyvinylidene fluoride and hot melt are mixed. To provide.
  • a hot melt electrospinning layer is provided between a cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric, and between the cellulose substrate and the second polyvinylidene fluoride nanofiber nonwoven fabric, respectively. It provides a filter comprising nanofibers on both sides of the substrate, characterized in that included.
  • the hot melt is characterized in that the polyvinylidene fluoride system.
  • the first polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 150 to 300 nm
  • the second polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 100 to 150 nm.
  • the cellulose substrate is characterized in that it comprises cellulose and polyethylene terephthalate
  • the cellulose substrate of one embodiment is characterized in that the composition ratio of the cellulose is 70 to 90 mass%
  • the composition ratio of the polyethylene terephthalate is 10 to 30 mass%
  • the cellulose substrate of another embodiment is characterized in that the flame-retardant coating.
  • a polyethylene terephthalate substrate and a spinning solution in which a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride are mixed on one side of the polyethylene terephthalate substrate are laminated and formed.
  • first and second polyvinylidene fluoros including a second polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning the mixed spinning solution and laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate.
  • the first polyvinylidene fluoride-hotmelt nanofibers formed by laminating by electrospinning a bicomponent substrate and a solution of polyvinylidene fluoride and hot melt on the upper surface of the bicomponent substrate
  • the present invention provides a filter including nanofibers on both surfaces of a substrate, wherein the first and second polyvinylidene fluoride-hot melt nanofiber nonwoven fabrics are heat-sealed.
  • a polyethylene terephthalate substrate, a first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate, and a first poly laminated on the first bicomponent substrate by electrospinning The vinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning on the second bicomponent substrate and the second bicomponent substrate laminated on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate.
  • a substrate comprising a second polyvinylidene fluoride nanofiber nonwoven fabric and heat-sealing the polyethylene terephthalate substrate, the first and second bicomponent substrates, and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics.
  • a filter comprising nanofibers on both sides.
  • a polyethylene terephthalate substrate, a first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate, a high melting point polyvinylidene fluoride and a low melting poly on the first bicomponent substrate A first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric formed by electrospinning a solution containing a vinylidene fluoride layered on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate Second high melting point and low melting point polyvinylidene formed by electrospinning a mixed solution of a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride on the second bicomponent substrate and the second bicomponent substrate A fluoride nanofiber nonwoven fabric comprising the polyethylene terephthalate substrate, First and second two-component provides a substrate and a filter that includes the first and second high melting point and low melting
  • a polyethylene terephthalate substrate a polyethylene terephthalate substrate, a first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate, and a first nylon laminated by electrospinning on the first bicomponent substrate Nanofiber nonwoven fabric, second bicomponent substrate laminated on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate and second nylon nano laminated by electrospinning on the second bicomponent substrate
  • a filter comprising a nanofiber on both sides of the substrate comprising a fiber nonwoven fabric and heat-sealing the polyethylene terephthalate substrate, the first and second bicomponent substrates, and the first and second nylon nanofiber nonwoven fabrics.
  • a polyvinylidene fluoride mixed nanofiber nonwoven fabric, wherein the first and second polyurethanes and the polyvinylidene fluoride mixed nanofiber nonwoven fabric laminated on both the substrate and the substrate are heat-sealed.
  • a filter comprising nanofibers on both sides of a substrate.
  • a base material a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm laminated by electrospinning on one side of the base material, the first polyvinylidene fluorine
  • a second polyvinylidene fluoride nanofiber nonwoven fabric which is laminated by electrospinning on a lide nanofiber nonwoven fabric and has a fiber diameter of 100 to 150 nm, and the other of the above substrates that is not bonded to the first polyvinylidene fluoride nanofiber nonwoven fabric Laminated by electrospinning on the side and laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm and the third polyvinylidene fluoride nanofiber nonwoven fabric and having a fiber diameter Including and heat-sealing a fourth polyvinylidene fluoride nanofiber nonwoven fabric of 100 to 150 nm It provides a filter comprising
  • a substrate a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning on one side of the substrate, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric
  • a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning onto the substrate, and the first low melting point polyvinylidene fluoride nanofiber is laminated by electrospinning on the other side of the substrate where the layering is not formed.
  • the fabric laminated in the order of the polyvinylidene fluoride nanofiber nonwoven fabric, the substrate, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the second high melting point polyvinylidene fluoride nanofibre nonwoven fabric is characterized in that it is heat-sealed.
  • a filter comprising nanofibers on both sides of a substrate.
  • a substrate a first nylon nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm laminated by electrospinning on one side of the substrate, and electrospun onto the first nylon nanofiber nonwoven fabric
  • a second nylon nanofiber nonwoven fabric having a thickness of 100 to 150 nm, and a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 80 to 150 nm and laminated by electrospinning on the second nylon nanofiber nonwoven fabric, and heat-sealing the same It provides a filter comprising nanofibers on both sides of the substrate, characterized in that.
  • the first polyurethane nanofiber nonwoven fabric laminated on the substrate the first polyurethane nanofiber nonwoven fabric laminated by electrospinning a polyurethane solution in which a polyurethane is dissolved in a solvent on one side of the substrate, A first polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning a polyvinylidene fluoride solution in which polyvinylidene fluoride was dissolved in a solvent, and the other of the substrates on which the first polyurethane nanofiber nonwoven fabric was not laminated.
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units
  • an electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, each polyvinylidene fluoride solution which melt
  • the first polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride solution on one side of the cellulose substrate in the first unit of the electrospinning apparatus In the flip device, the cellulose substrate and the first poly ratio laminated to the Rotating the top and bottom of the fabric consisting of a lithium fluoride nanofiber nonwoven fabric 180 °, the other side of the cellulose substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated in the second unit of the electrospinning apparatus Laminating the second polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the polyvinylidene fluoride solution to the first and second polyvinylidene fluorides laminated on both sides of the cellulose substrate and the cellulose substrate. It provides a method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises the step of heat-sealing
  • the polyvinylidene fluoride solution is characterized in that the polyvinylidene fluoride and a hot melt mixed solution, the hot melt is characterized in that the polyvinylidene fluoride-based hot melt.
  • the first polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 150 to 300nm
  • the second polyvinylidene fluoride nanofiber nonwoven fabric is characterized in that the fiber diameter of 100 to 150nm.
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units,
  • the electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, the high melting point polyvinylidene fluoride and the low melting point polyvinylidene fluoride are dissolved in a solvent.
  • a second polyvinylidene fluoride nanofiber nonwoven fabric is formed by electrospinning the spinning solution on the other side of the polyethylene terephthalate substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. Laminating and heat-sealing the laminated fabric in the order of the first polyvinylidene fluoride nanofiber nonwoven fabric, the polyethylene terephthalate substrate, and the second polyvinylidene fluoride nanofiber nonwoven fabric. It provides a method for producing a filter comprising nanofibers on both sides of the substrate.
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units
  • a spinning solution in which polyvinylidene fluoride and hot melt is dissolved in a solvent
  • the flip In the step of feeding into the supply device, in the first unit of the electrospinning apparatus to electrospin the spinning solution on one side of the two-component substrate to laminate a first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric, the flip The bicomponent substrate and a first polyvinylidene fluoride-hotmelt nanofiber nonwoven fabric laminated thereon in an apparatus Rotating the top and bottom of the fabric consisting of 180 °, the second unit of the electrospinning device in the room on the other side of the two-component substrate
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units,
  • each unit contains the polyvinylidene fluoride solution which melt
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units
  • the manufacturing method of producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution on a substrate located in the collector of each unit high melting point polyvinylidene fluoride and low melting point polyvinylidene fluoride in a solvent
  • the first unit of the electrospinning device includes a first bicomponent substrate, a polyethylene terephthalate substrate, and a second bicomponent substrate laminated in this order;
  • First high melting point and low melting point polyvinylidene by electrospinning the polyvinylidene fluoride solution on a bicomponent substrate Stacking fluoride nanofiber nonwoven fabric, the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units,
  • a method of manufacturing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution on a substrate positioned in a collector of each unit the method comprising: introducing a nylon solution in which a nylon is dissolved in a solvent into a feeder of each unit; In the first unit of the electrospinning apparatus, the nylon solution is electrospun on the first bicomponent substrate of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate.
  • Stacking the second nylon nanofiber nonwoven fabric by electrospinning the nylon solution on one surface of the powder substrate; and the first nylon nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate, the second bicomponent substrate, and the second It provides a method for producing a filter including nanofibers on both sides of the substrate, comprising the step of heat-sealing the fabric laminated in the order of 2 nylon nanofiber nonwoven fabric.
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units
  • each unit contains the spinning solution which melt
  • the first unit of the electrospinning apparatus Injecting into the spinning solution main tank of the electrospinning apparatus, the first unit of the electrospinning apparatus to electrospun the spinning solution on one side of the substrate to form a laminate of the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric
  • the flip device located at the rear end of the first unit, the substrate and the laminated first polyurethane and polyvinyl Rotating the top and bottom of the fabric 180 ° such that the other side of the substrate, on which the first nanofiber nonwoven is not laminated, faces the nozzle block in a fabric made of a lidene fluoride mixed nanofiber nonwoven fabric
  • the second of the electrospinning apparatus In the unit, the step of forming the second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric by electrospinning the spinning solution on the other side of the substrate and the first and second laminated on both sides of the substrate It provides a method for producing a filter comprising a nanofiber
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units,
  • dissolved polyvinylidene fluoride in the solvent was carried out
  • dissolved polyvinylidene fluoride in the solvent was carried out
  • dissolved polyvinylidene fluoride in the solvent was carried out
  • the spinning on the first polyvinylidene fluoride nanofiber nonwoven fabric Electrospinning the solution to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm, the substrate, the first
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units
  • the low melting point polyvinylidene fluoride which melt
  • Electrospinning a vinylidene fluoride solution to laminate a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric wherein in the second unit of the electrospinning apparatus, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric Stacking a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the high melting point polyvinylidene fluoride solution on the substrate; the substrate, the first low melting point polyvinylidene fluoride nanofiber in the flip device Non-woven fabric and the first high melting point polyvinylidene fluoride nanofiber non-woven fabric, the step of rotating the top and bottom of the laminated fabric 180 °, the third unit of the electrospinning apparatus in the first low melting point polyvinylidene fluoride The low melting point polyvinylidene fluoride on the other side of the substrate on which the nanofiber nonwoven fabric is not laminated.
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units,
  • the polyvinylidene fluoride is dissolved in a solvent to prepare a polyvinylidene fluoride solution and added to the spinning solution main tank of the second and fourth units of the electrospinning apparatus
  • the first unit of the electrospinning apparatus by electrospinning the nylon solution on one side of the substrate to have a fiber diameter of 10 Laminating a first nylon nanofiber nonwoven fabric having a thickness of 0 to 150 nm
  • the polyvinylidene fluoride solution is electrospun onto the first nylon nanofiber nonwoven fabric to have a fiber diameter of 80 to 150 nm.
  • the second nylon nanofiber nonwoven fabric Electrospinning the vinylidene fluoride solution to form a second polyvinylidene fluoride nanofiber having a fiber diameter of 80 to 150 nm and laminating the substrate, the first nylon nanofiber nonwoven fabric, the second nylon nanofiber nonwoven fabric, and 1.
  • a method of manufacturing a filter comprising nanofibers on both sides of a substrate comprising thermally bonding a laminated fabric comprising a polyvinylidene fluoride nanofiber nonwoven fabric and a second polyvinylidene fluoride nanofiber nonwoven fabric To provide.
  • the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units
  • the first solution of the electrospinning apparatus is a polyurethane solution in which a polyurethane is dissolved in a solvent
  • the first polyurethane nano by electrospinning the polyurethane solution on one side of the substrate Laminating a nonwoven fabric
  • a first polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride solution on the first polyurethane nanofiber nonwoven fabric Forming step, the top, bottom of the fabric laminated in the order of the substrate, the first polyurethane nanofiber nonwoven fabric, the first polyvinylidene fluoride nanofiber nonwoven fabric in a flip device located at the rear end of the second unit of the electrospinning apparatus Rotating the 180 °, in the third unit of the electrospinning apparatus to the second polyurethane nanofiber nonwoven fabric by electrospinning the polyurethane solution on the other side of the substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated Forming a laminate, in the fourth unit of the electrosp
  • the filter manufactured according to the present invention has a nanofiber nonwoven fabric on both sides of the substrate, and thus has a higher filtration efficiency and a lower pressure drop than a conventional filter.
  • the electrospinning device is provided with a flip device for rotating the top and bottom of the fabric 180 °, it is possible to simplify the process of electrospinning on both sides of the substrate.
  • the electrospinning device is composed of at least two or more units, there is an advantage that the continuous electrospinning is possible, so that mass production of the filter is possible.
  • FIG. 1 is a side view schematically showing an electrospinning device according to the present invention
  • FIG. 2 is a plan view schematically showing a nozzle block installed in each unit of the electrospinning apparatus according to the present invention
  • FIG. 3 is a view schematically showing an auxiliary transport apparatus of an electrospinning apparatus according to the present invention.
  • FIG. 4 is a view schematically showing another embodiment of the auxiliary belt roller of the auxiliary transport device of the electrospinning apparatus according to the present invention.
  • 5 to 8 is a side view schematically showing an operation process of the long sheet feed rate adjusting apparatus of the electrospinning apparatus according to the present invention
  • FIG. 9 is a schematic diagram schematically showing a filter including a polyvinylidene fluoride nanofiber nonwoven fabric on both surfaces of a cellulose substrate according to the present invention.
  • FIG. 10 is a schematic diagram schematically showing a filter including a polyvinylidene fluoride nanofiber nonwoven fabric on both sides of a polyethylene terephthalate substrate according to the present invention
  • FIG. 11 is a schematic view schematically showing a filter including a polyvinylidene fluoride-hot melt nanofiber nonwoven fabric on both sides of a bicomponent substrate of the present invention
  • FIG. 12 is a schematic diagram schematically showing a filter comprising a polyvinylidene fluoride nanofiber nonwoven fabric of the present invention and a two-component base material,
  • FIG. 13 is a schematic diagram schematically showing a filter comprising a high melting point and a low melting point polyvinylidene fluoride nanofiber nonwoven fabric and a bicomponent substrate.
  • FIG. 14 is a schematic diagram schematically showing a filter comprising a nylon nanofiber nonwoven fabric of the present invention and a two-component base material,
  • FIG. 15 is a schematic diagram showing a filter including a polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric on both sides of the substrate of the present invention
  • 16 is a side view schematically showing an embodiment of an electrospinning apparatus according to the present invention.
  • FIG. 17 is a schematic diagram schematically showing a filter including a polyvinylidene fluoride nanofiber nonwoven fabric having multiple fiber diameter groups on both sides of the substrate of the present invention
  • FIG. 18 is a schematic diagram schematically showing a filter including a high melting point polyvinylidene fluoride nanofiber nonwoven fabric and a low melting point polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the substrate of the present invention
  • FIG. 19 is a schematic diagram schematically showing a filter including a nylon nanofiber nonwoven fabric and a polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the substrate of the present invention
  • FIG. 20 is a schematic diagram schematically showing a filter including a polyurethane nanofiber nonwoven fabric and a polyvinylidene fluoride nanofiber nonwoven fabric on both sides of a substrate of the present invention
  • 16a auxiliary belt
  • 16b auxiliary belt roller
  • 70 thickness measuring device
  • 80 air permeability measuring device
  • FIG. 1 is a side view schematically showing an electrospinning device according to the present invention
  • FIG. 2 is a plan view schematically showing a nozzle block installed in each unit of the electrospinning device according to the present invention
  • FIG. 4 is a view schematically showing an auxiliary feeder of the spinning apparatus
  • FIG. 4 is a view schematically showing another embodiment of the auxiliary belt roller of the auxiliary feeder of the electrospinning apparatus according to the present invention
  • FIGS. 5 to 8 are the present invention.
  • 9 is a side view schematically showing an operation process of a long sheet conveying speed adjusting apparatus of an electrospinning apparatus according to the present invention
  • FIG. 9 is a schematic diagram schematically showing a filter including polyvinylidene fluoride nanofiber nonwoven fabric on both sides of a cellulose substrate according to the present invention.
  • 10 is a polyvinylidene flu on both sides of a polyethylene terephthalate substrate according to the present invention.
  • It is a schematic diagram which shows the filter containing a lide nanofiber nonwoven fabric
  • FIG. 11 is a schematic diagram which shows the filter containing a polyvinylidene fluoride-hot melt nanofiber nonwoven fabric on both surfaces of the bicomponent base material of this invention
  • FIG. Is a schematic diagram showing a filter comprising a polyvinylidene fluoride nanofiber nonwoven fabric of the present invention and a bicomponent substrate
  • FIG. 13 is a high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric and a bicomponent substrate. It is a schematic diagram which shows the filter containing, FIG. 14 is a schematic diagram which shows the filter containing the nylon nanofiber nonwoven fabric of this invention and a bicomponent base material, FIG. 15 is a polyurethane and polyvinyl on both surfaces of the base material of this invention.
  • a filter comprising a lidene fluoride mixed nanofiber nonwoven is schematically It is a schematic diagram to show.
  • FIG 16 is a side view schematically showing an embodiment of the electrospinning apparatus according to the present invention
  • Figure 17 is a schematic view of a filter comprising a polyvinylidene fluoride nanofiber nonwoven fabric having a multi-fiber diameter group on both sides of the substrate of the present invention
  • 18 is a schematic diagram schematically showing a filter including a high melting point polyvinylidene fluoride nanofiber nonwoven fabric and a low melting point polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the substrate of the present invention
  • FIG. It is a schematic diagram which shows the filter containing a nylon nanofiber nonwoven fabric and polyvinylidene fluoride nanofiber nonwoven fabric on both surfaces of the base material of this invention
  • FIG. 20 is a polyurethane nanofiber nonwoven fabric and polyvinylidene fluoride nanoparticles on both sides of the base material of this invention.
  • the electrospinning apparatus 1 comprises a bottom-up electrospinning apparatus 1, at least one or more units (10a, 10b) are provided sequentially spaced at a predetermined interval, Each unit 10a, 10b electrospins the same polymer spinning solution individually, or separately electrospins the polymer spinning solution of different materials to produce a filter material such as a nonwoven fabric.
  • each unit (10a, 10b) is for supplying a quantitative supply of the polymer spinning solution filled in the spinning solution main tank (8) and the spinning solution main tank (8) filled therein the polymer spinning solution therein Discharge the polymer spinning solution filled in the metering pump (not shown) and the spinning solution main tank (8), wherein the nozzle block 11 and the nozzle 12 are arranged in a plurality of nozzles (12)
  • the nozzle block 11 and the nozzle 12 are arranged in a plurality of nozzles (12)
  • the polymer spinning solution to be injected from the nozzle 12 is composed of a configuration comprising a collector 13 and a voltage generator (14a, 14b) for generating a voltage to the collector 13 spaced apart.
  • the electrospinning apparatus 1 includes a plurality of nozzles 12 in which the polymer spinning solution filled in the spinning solution main tank 8 is formed in the nozzle block 11 through a metering pump. Continuously quantitatively supplied, the polymer spinning solution is supplied to the nanofibers on the long sheet 15 that is radiated and focused on the collector 13 is applied to the high voltage through the nozzle 12 is moved on the collector 13 The nonwoven fabric is formed, and the nanofiber nonwoven fabric formed is made of a filter or nonwoven fabric.
  • the front of the unit (10a) located at the front end of each unit (10a, 10b) of the electrospinning apparatus 1 is supplied into the unit (10a) is a nanofiber nonwoven fabric laminated by the injection of the polymer spinning solution
  • a feed roller 3 for supplying the long sheet 15 is provided, and a long sheet 15 in which nanofiber nonwoven fabric is laminated is formed at the rear of the unit 10b positioned at the rear end of each unit 10a, 10b.
  • a winding roller 5 for winding up is provided.
  • the long sheet 15 in which the polymer spinning solution is laminated while passing through the units 10a and 10b is preferably made of a nonwoven fabric or a woven fabric, but is not limited thereto.
  • the material of the polymer spinning solution radiated through each unit (10a, 10b) of the electrospinning apparatus 1 is not limited separately, for example, polypropylene (PP), polyethylene terephthalate (PET), poly Vinylidene fluoride, nylon, polyvinylacetate, polymethylmethacrylate, polyacrylonitrile (PAN), polyurethane (PUR), polybutylene terephthalate (PBT), polyvinyl butyral, polyvinyl chloride, polyethylene Imines, polyolefins, polylactic acid (PLA), polyvinyl acetate (PVAc), polyethylene naphthalate (PEN), polyamide (PA), polyvinyl alcohol (PVA), polyethyleneimide (PEI), polycaprolactone (PCL) , Polylactic acid glycerol (PLGA), silk, cellulose, chitosan, and the like, and polyamide (PP) material and polyamide, polyimide, polyamideimide, poly (meth-phenylene (PP
  • the spinning solution supplied through the nozzle 12 in the units 10a and 10b is a solution in which the polymer of the electrospinable synthetic resin material is dissolved in a suitable solvent, and the type of solvent may also dissolve the polymer.
  • a suitable solvent such as phenol, formic acid, sulfuric acid, m-cresol, thifluoroacetic & hydride / dichloromethane, water, N-methylmorpholine N-oxide, chloroform, tetrahydrofuran Methyl isobutyl ketone, methyl ethyl ketone, aliphatic hydroxyl group m-butyl alcohol, isobutyl alcohol, isopropyl alcohol, methyl alcohol, ethanol, aliphatic ketone group, propylene glycol as hexane, tetrachloroethylene, acetone, glycol group , Diethylene glycol, ethylene glycol, halogenated compound, trichloroethylene, dichlorome
  • the overflow device 200 is provided in the electrospinning apparatus 1 according to the present invention. That is, each unit (10a, 10b) of the electrospinning device (1) in the spinning solution main tank 8, the second transfer pipe 216, the second transfer control device 218 and the intermediate tank 220 and regeneration Each overflow device 200 including a tank 230 is provided.
  • each of the units 10a and 10b of the electrospinning apparatus 1 is provided with an overflow device 200, but any one of the units 10a and 10b is the unit 10a.
  • the overflow device 200 is provided, and the unit 10b located at the rear end of the overflow device 200 may be integrally connected.
  • the spinning solution main tank 8 stores the spinning solution serving as a raw material of the nanofibers.
  • the spinning solution main tank 8 is provided with a stirring device 211 for preventing separation or solidification of the spinning solution.
  • the second conveying pipe 216 is composed of a pipe and valves 212, 213, and 214 connected to the spinning solution main tank 8 or the regeneration tank 230, and the spinning solution main tank 8 or regeneration.
  • the spinning solution is transferred from the tank 230 to the intermediate tank 220.
  • the second transfer control device 218 controls the transfer operation of the second transfer pipe 216 by controlling the valves 212, 213, 214 of the second transfer pipe 216.
  • the valve 212 controls the transfer of the spinning solution from the spinning solution main tank 8 to the intermediate tank 220, and the valve 213 transfers the spinning solution from the regeneration tank 230 to the intermediate tank 220.
  • the valve 214 controls the amount of polymer spinning solution flowing into the intermediate tank 220 from the spinning solution main tank 8 and the regeneration tank 230.
  • the intermediate tank 220 stores the spinning solution supplied from the spinning solution main tank 8 or the regeneration tank 230, supplies the spinning solution to the nozzle block 11, and adjusts the liquid level of the supplied spinning solution.
  • the second sensor 222 to measure is provided.
  • the intermediate tank 220 stores the spinning solution supplied from the spinning solution main tank 8 or the regeneration tank 230, supplies the spinning solution to the nozzle block 11, and adjusts the liquid level of the supplied spinning solution.
  • the second sensor 222 to measure is provided.
  • the second sensor 222 may be a sensor capable of measuring the liquid level, and for example, the second sensor 222 may be an optical sensor or an infrared sensor.
  • the lower portion of the intermediate tank 220 is provided with a supply pipe 240 and a supply control valve 242 for supplying the spinning solution to the nozzle block 11, the supply control valve 242 is the supply pipe 240 Control the supply operation.
  • the regeneration tank 230 has a stirring device 231 for storing the spinning solution recovered by overflow and preventing separation or solidification of the spinning solution, and measuring a liquid level of the recovered spinning solution. 232 is provided.
  • the first sensor 232 may be a sensor capable of measuring the liquid level, and for example, the first sensor 232 may be an optical sensor or an infrared sensor.
  • the spinning solution overflowed from the nozzle block 11 is recovered through the spinning solution recovery path 250 provided under the nozzle block 11.
  • the spinning solution recovery path 250 recovers spinning solution to the regeneration tank 230 through the first transfer pipe 251.
  • the first transfer pipe 251 includes a pipe and a pump connected to the regeneration tank 230, and transfers the spinning solution from the spinning solution recovery path 250 to the regeneration tank 230 by the power of the pump. .
  • the regeneration tank 230 is preferably at least one, in the case of two or more may be provided with a plurality of the first sensor 232 and the valve 233.
  • a plurality of valves 233 positioned above the regeneration tank 230 are also provided, so that a first transfer control device (not shown) is provided in the regeneration tank 230. Control two or more valves 233 located above the liquid level of the first sensor 232 to control whether the spinning solution is transferred to any one of the plurality of regeneration tanks 230. do.
  • the electrospinning apparatus 1 is provided with a VOC recycling apparatus 300. That is, a condenser for condensing and liquefying VOCs (Volatile Organic Compounds) generated during spinning of the polymer spinning solution through the nozzles 12 on the units 10a and 10b of the electrospinning apparatus 1. And a distillation apparatus 320 for distilling and liquefying the VOC condensed through the condenser 310 and a solvent storage device 330 for storing the liquefied solvent through the distillation apparatus 320.
  • the VOC recycling apparatus 300 is provided.
  • the condenser 310 is preferably made of a water-cooled, evaporative or air-cooled condenser, but is not limited thereto.
  • the vaporized VOC generated in each of the units 10a and 10b is introduced into the condenser 310, and the liquefied VOC generated in the condenser 310 is stored in the solvent storage device 330. Pipings 311 and 331 for connecting are respectively installed.
  • the pipes 311 and 331 for connecting the units 10a and 10b and the condenser 310 and the condenser 310 and the solvent storage device 330 are connected to each other.
  • the condensed VOC is condensed through the condenser 310, and the condensed liquefied VOC is supplied to the solvent storage device 330, but the condenser 310 and the solvent storage are provided. It is also possible to provide a distillation apparatus 320 between the apparatus 330 to separate and classify each solvent when one or more solvents are applied.
  • the distillation apparatus 320 is connected to the condenser 310 to heat and vaporize the liquefied state of the VOC with high temperature heat, and is cooled again to supply the liquefied VOC to the solvent storage device (330).
  • the VOC recycling apparatus 300 is provided through the condenser 310 and the condenser 310 to condense and liquefy by supplying air and cooling water to the vaporized VOC discharged through each unit (10a, 10b) Including a distillation apparatus 320 for applying a heat to the condensed VOC to a vaporized state, and then cooled again to a liquefied state and a solvent storage device 330 for storing the liquefied VOC through the distillation apparatus 320 It is composed.
  • the distillation apparatus 320 is preferably made of a fractional distillation apparatus, but is not limited thereto.
  • piping for connecting the units 10a and 10b and the condenser 310, the condenser 310 and the distillation apparatus 320, and the distillation apparatus 320 and the solvent storage device 330 to each other 311, 321, and 331 are connected to each other.
  • the content of the solvent in the spinning solution overflowed and recovered in the regeneration tank 230 is measured.
  • the measurement can be carried out by extracting a portion of the spinning solution in the regeneration tank 230 as a sample, and analyzing the sample. Analysis of the spinning solution can be carried out by known methods.
  • the required amount of solvent is supplied to the regeneration tank 230 through the pipe 332 of the liquefied VOC supplied to the solvent storage device 330. That is, the liquefied VOC is supplied to the regeneration tank 230 in a required amount according to the measurement result, and can be reused and recycled as a solvent.
  • the case 18 constituting the units 10a and 10b of the electrospinning apparatus 1 is preferably made of a conductor, but the case 18 is made of an insulator or the case 18 is made of conductive material.
  • the body and the insulator may be mixed and applied, or may be made of various other materials.
  • the case 18 is preferably formed as a single case 18 is coupled to the lower portion formed of a conductor and the upper portion formed of an insulator, but is not limited thereto.
  • the case 18 is formed of a conductor and an insulator, and the upper part of the case 18 is formed of an insulator, and is separately provided to attach the collector 13 to the upper inner surface of the case 18. It is possible to delete the insulating member 19, which can simplify the configuration of the device.
  • the insulation between the collector 13 and the case 18 can be optimized, and when the electrospinning is performed by applying 35 kV between the nozzle block 11 and the collector 13, the collector 13 and the case 18. It is possible to prevent breakdown of insulation which may occur between (18) and other members.
  • the leak current can be stopped within a predetermined range, so that the current supplied from the voltage generators 14a and 14b can be monitored, and an abnormality of the electrospinning apparatus 1 can be detected early, thereby the electrospinning apparatus
  • the long time continuous operation of (1) is possible, nanofiber production of the required performance is stable, and mass production of nanofibers is possible.
  • the distance between the inner surface of the case 18 formed of an insulator and the outer circumferential surface of the collector 13 is the distance between the thickness a of the case 18 and the inner surface of the case 18 and the outer surface of the collector 13.
  • the temperature control controller 60 is provided in each tube 40 of the nozzle block 11 installed in each unit 10a, 10b of the electrospinning apparatus 1 according to the present invention, and the voltage generator 14 )
  • the tubular body 40 of the nozzle block 11 is installed in each of the units (10a, 10b), the polymer spinning solution is supplied to a plurality of nozzles 12 provided thereon
  • the thermostat control device 60 is provided.
  • the flow of the polymer spinning solution in the nozzle block 11 is supplied to each tube 40 through a solution flow pipe from the spinning solution main tank 8 in which the polymer spinning solution is stored.
  • the polymer spinning solution supplied to each of the tubular bodies 40 is discharged and sprayed through a plurality of nozzles 12 and integrated in the long sheet 15 in the form of nanofibers.
  • a plurality of nozzles 12 in the longitudinal direction are mounted on the upper portion of each of the tubular body 40 at regular intervals, and the nozzle 12 and the tubular body 40 are made of a conductive member and the tubular body 40 in an electrically connected state. ) Is mounted.
  • the auxiliary conveying device 16 is connected to the conveying speed of the long sheet 15 to facilitate the detachment and conveyance of the long sheet 15 attached by electrostatic attraction to the collector 13 installed in each unit 10a, 10b. It is configured to include a secondary belt 16a for synchronously rotating and the secondary belt roller 16b for supporting and rotating the secondary belt 16a.
  • the auxiliary belt 16a is rotated by the rotation of the auxiliary belt roller 16b by the structure as described above, and the long seat 15 is moved to the units 10a, 10b by the rotation of the auxiliary belt 16a.
  • the auxiliary belt roller 16b of one of the auxiliary belt rollers 16b is rotatably connected to the motor for drawing and supplying.
  • the auxiliary belt 16a is provided with five auxiliary belt rollers 16b, and the auxiliary belt 16a is rotated by rotating one of the auxiliary belt rollers 16b by the operation of the motor. At the same time, the remaining auxiliary belt roller 16b is rotated, but at least two auxiliary belt rollers 16b are provided on the auxiliary belt 16a, and any one of the auxiliary belt rollers 16b is rotated by the operation of the motor. Accordingly, the auxiliary belt 16a and the remaining auxiliary belt roller 16b may be rotated.
  • the auxiliary conveying device 16 is composed of an auxiliary belt roller 16b and an auxiliary belt 16a which can be driven by a motor, as shown in Figure 4, the auxiliary belt It is also possible for the roller 16b to consist of a roller with a low coefficient of friction.
  • the auxiliary belt roller 16b is preferably made of a roller including a low friction coefficient bearing.
  • the auxiliary conveying device 16 is composed of the auxiliary belt 16a and the auxiliary belt roller 16b having a low coefficient of friction, only the roller having a low coefficient of friction excluding the auxiliary belt 16a is provided. It is also possible to be made to convey the long sheet (15).
  • a roller having a low friction coefficient is applied as the auxiliary belt roller 16b, but a roller having a low coefficient of friction is not limited to its shape and configuration, and rolling bearings, oil bearings, ball bearings, Rollers including bearings such as roller bearings, sliding bearings, sleeve bearings, hydraulic journal bearings, hydrostatic journal bearings, pneumatic bearings, pneumatic bearings, pneumatic bearings and air bearings can be applied, and plastics, emulsifiers, etc. It is also possible to apply a roller that reduces the coefficient of friction by including the material and additives.
  • the thickness measuring device 70 is provided in the electrospinning apparatus 1 according to the present invention. That is, as shown in FIG. 1, the thickness measuring device 70 is provided between the units 10a and 10b of the electrospinning device 1, and the thickness measured by the thickness measuring device 70. According to the control the feed rate (V) and the nozzle block (11).
  • the transfer speed V of the next unit 10b is as described above.
  • the thickness of the nanofiber nonwoven fabric per unit area may be increased by increasing the discharge amount of the nozzle block 11 or increasing the discharge amount of the nozzle block 11 and adjusting the voltage intensity of the voltage generators 14a and 14b.
  • the feed rate V of the next unit 10b is increased or the nozzle is increased.
  • the thickness measuring device 70 is disposed to face up and down, with the long sheet 15 to be introduced and supplied therebetween, the distance to the top or bottom of the long sheet 15 by the ultrasonic measuring method. Is provided with a thickness measuring section consisting of a pair of ultrasonic longitudinal wave transverse measurement method for measuring the.
  • the thickness of the long sheet 15 may be calculated based on the distance measured by the pair of ultrasonic measuring devices. That is, the ultrasonic longitudinal wave and the transverse wave are projected together on the long sheet 15 in which the nanofiber nonwoven fabric is laminated, so that each ultrasonic signal of the longitudinal wave and the transverse wave reciprocates in the long sheet 15, that is, the propagation time of the longitudinal wave and the transverse wave. After the measurement, a predetermined calculation is performed using the measured propagation time of the longitudinal wave and the transverse wave and the propagation speed of the longitudinal wave and the transverse wave and the temperature constant of the longitudinal wave and the transverse wave propagation speed at the reference temperature of the long sheet 15 in which the nanofiber nonwoven fabric is laminated. It is the thickness measuring apparatus 70 using the ultrasonic longitudinal wave and the transverse wave which calculate the thickness of a test subject from a formula.
  • the thickness measuring device 70 measures the propagation time of the longitudinal wave and the transverse wave of the ultrasonic wave, and then measures the propagation time of the measured longitudinal wave and the transverse wave and the longitudinal wave and the transverse wave at the reference temperature of the long sheet 15.
  • the thickness of the long sheet 15 in which the nanofiber nonwoven fabric is laminated from a predetermined equation using the propagation speed and the temperature constants of the longitudinal wave and the transverse wave propagation speed, the propagation speed according to the temperature change even when the internal temperature is uniform.
  • the thickness compensation can be precisely measured by self-compensation of the error caused by the change, and the precise thickness can be measured regardless of any type of temperature distribution inside the nanofiber nonwoven fabric.
  • the feed rate and the nozzle block 11 of the long sheet 15 are provided, the long sheet feeding speed adjusting device 30 for adjusting the feeding speed of the long sheet 15 is further provided in the electrospinning apparatus 1.
  • the long sheet conveying speed adjusting device 30 is provided on the buffer section 31 and the buffer section 31 formed between each unit (10a, 10b) of the electrospinning device 1 is a long sheet It comprises a pair of support rollers (33, 33 ') for supporting the (15) and an adjusting roller 35 provided between the pair of support rollers (33, 33').
  • the support rollers 33 and 33 ' are long when the long sheet 15 is formed in which the nanofiber nonwoven fabric is laminated by the spinning solution sprayed by the nozzle 12 in each of the units 10a and 10b. It is for supporting the conveyance of the sheet
  • the adjustment roller 35 is provided between the pair of support rollers (33, 33 '), the elongated sheet (15) is wound, by the up and down movement of the adjustment roller 35 The feed speed and travel time of the long sheets 15a and 15b for each unit 10a and 10b are adjusted.
  • a sensing sensor (not shown) is provided for sensing the conveying speed of the long sheets 15a and 15b in each of the units 10a and 10b, and in each unit 10a and 10b detected by the sensing sensor.
  • the main control unit 7 is provided for controlling the movement of the adjustment roller 35 in accordance with the feeding speed of the long sheet 15a, 15b.
  • the sensing speed of the long sheet (15a, 15b) in each of the units (10a, 10b), and the controller according to the feed rate of the detected long sheet (15a, 15b) control roller ( 35 is configured to control the movement, but the auxiliary belt 16a or the auxiliary belt for driving the auxiliary belt 16a provided on the outside of the collector 13 to transfer the long sheet (15a, 15b).
  • the driving speed of the roller 16b or the motor may be sensed, and accordingly, the controller may be configured to control the movement of the adjustment roller 35.
  • the long sheet in the unit 10b in which the feed rate of the long sheet 15a in the unit 10a in which the sensing sensor is positioned at the front end of each unit 10a or 10b is located in the rear end thereof.
  • the pair of long sheets 15a conveyed in the unit 10a positioned at the front end may be prevented from sagging.
  • the tip of the long sheet 15a which is conveyed to the outside of the unit 10a positioned at the front end and is excessively transferred to the buffer section 31 positioned between the units 10a and 10b, is pulled out by Of the long sheet 15a in the unit 10a located at And the positioning unit (10b) so that the same correction of the feed rate in a long sheet (15b) to control and prevent sagging and wrinkling of the elongated sheet (15a).
  • the feed rate of the long sheet 15b in the unit 10b in which the sensing sensor is located at the front end of the unit 10a in which the sensing sensor is located at the front end of each of the units 10a and 10b If it is detected that the slower, as shown in Figs. 7 to 8, the pair of support rollers 33 to prevent the long sheet 15b conveyed in the unit 10b positioned at the rear end thereof from being torn. 33 '), which is conveyed to the unit 10b positioned at the rear end of the unit 10a positioned at the front end while moving the adjusting roller 35 to which the long sheet 15 is wound upward.
  • the long sheet 15a which is transferred to the outside of the unit 10a positioned at the tip of the long sheet 15 and is wound by the adjusting roller 35 in the buffer section 31 positioned between the units 10a and 10b. Is supplied to the unit 10b located at the rear end quickly, so that the long inside the unit 10a located at the front end
  • the feed rate of the root (15a) unit (10b) within the elongated sheet (15b) which is located in the transfer speed and the rear end of the year, while the correction control such that the same prevents the dead of the elongated sheet (15b).
  • each unit 10a, 10b Positioned at the rear end of each unit 10a, 10b by adjusting the conveying speed of the long sheet 15b conveyed into the unit 10b located at the rear end of each unit (10a, 10b) by the structure as described above It is possible to obtain the effect that the feed rate of the long sheet 15b in the unit 10b is equal to the feed rate of the long sheet 15a in the unit 10a positioned at its tip.
  • the flip device 110 is provided in the middle of the electrospinning apparatus 1 according to the present invention. That is, a flip device 110 for rotating the long sheet 15 is provided between the unit 10a located at the front end of the electrospinning device 1 and the unit 10b located at the rear end.
  • the flip device 110 is formed in a cylindrical shape, the guide grooves 112 and 112 'for being transported while being inserted at both ends of the elongated sheet 15 at both ends of the inner circumference in the horizontal direction at the center thereof.
  • the guide pieces 111 and 111 'each of which is formed in Fig. 1 are protruded inwardly.
  • any one of the guide pieces 111, 111, 111 'protruding from the inner circumference of the flip device 110 is formed to extend upward along the inner circumference, the other guide piece 111' ) Is formed in the downward direction along the inner circumference such that each guide piece (111, 111 ') is formed spirally extending along the inner circumference of the flip device, so that the guide groove 112 of the guide piece (111, 111' ') , 112 ') is inserted into the guide grooves 112 and 112' of the guide pieces 111 and 111 'to be rotated by 180 °.
  • the auxiliary conveying device 16 including the auxiliary belt 16a and the auxiliary belt roller 16b according to the structure as described above.
  • the long elongated sheet 15 laminated with the polymer spinning solution radiated on the lower surface passes through the flip device 110 and rotates 180 ° such that the lower surface is positioned at the top and the upper surface is positioned at the bottom.
  • a unit 10a including a nozzle block 11 and a nozzle 12 for electrospinning such that the sheet 15 is supplied to the unit 10b positioned at the rear end, and then the polymer spinning solution is radiated to the lower surface thereof. It is possible to electrospin the polymer spinning solution on the lower and upper surfaces of the long sheet 15 without changing the upper and lower positions of 10b).
  • a drying device such as a hot air fan or an electric heater is provided to the flip device 110 to dry the long sheet 15 when the long sheet 15 is rotated through the flip device 110. desirable.
  • the air permeability measuring device 80 is provided in the electrospinning apparatus 1 of the present invention. That is, the air permeability measurement for measuring the air permeability of the nanofiber nonwoven fabric produced through the electrospinning device 1 in the rear of the unit (10b) located at the rear end of each unit (10a, 10b) of the electrospinning device (1) Apparatus 80 is provided.
  • the ventilation rate of the long sheet 15 and the nozzle block 11 are controlled based on the ventilation rate of the nanofiber nonwoven fabric measured by the air permeability measuring device 80.
  • the feed rate V of each unit 10a or 10b is slowed, or the nozzle block
  • the discharge amount of (11) is increased, and the discharge amount of the nanofibers per unit area is increased by adjusting the intensity of the voltage of the voltage generators 14a and 14b to form a small air permeability.
  • the feed rate V of the units 10a and 10b is increased or the nozzle is increased.
  • the nanofiber nonwoven fabric As described above, by measuring the air permeability of the nanofiber nonwoven fabric, it is possible to manufacture a nanofiber nonwoven fabric having a uniform air permeability by controlling the feed rate and nozzle block 11 of each unit (10a, 10b) according to the air permeability. .
  • the feed rate (V) is not changed from the initial value, and when the deviation amount (P) is equal to or more than the predetermined value, the feed rate (V) Since it is also possible to control to change from the initial value, it becomes possible to simplify the control of the feed rate V by the feed rate V controller.
  • the discharge amount and the intensity of the voltage of the nozzle block 11 can be adjusted in addition to the control of the feed rate V.
  • the discharge amount and the intensity of the voltage of the nozzle block 11 are controlled. Is not changed from the initial value, and when the deviation amount P is equal to or larger than a predetermined value, the discharge amount and voltage of the nozzle block 11 are controlled to change the intensity of the discharge amount and voltage of the nozzle block 11 from the initial value.
  • the control of the intensity of the can be simplified.
  • the electrospinning apparatus (1) is provided with a main control device (7), the main control device (7) is a nozzle block 11, voltage generators (14a, 14b) and thickness measuring device (70) and The long sheet feed rate adjusting device 30 and the ventilation device also controls the measuring device 80.
  • the laminating device 90 for laminating the nanofiber nonwoven fabric electrospun through each unit (10a, 10b) of the electrospinning apparatus 1 is located in the rear end of the unit (10a, 10b) 10b) is provided at the rear, and performs the post-processing of the nanofiber nonwoven fabric electrospun through the electrospinning apparatus 1 by the laminating apparatus 90.
  • a polyvinylidene fluoride solution is used as the polymer spinning solution, and a cellulose substrate is used as the long sheet 15.
  • the cellulose base material used by this invention is excellent in dimensional stability at high temperature, and has the characteristic of high heat resistance.
  • Cellulose fibers have high crystallinity, high modulus of elasticity in terms of forming a fine porous structure, and are inherently excellent in dimensional stability at high temperatures.
  • Cellulose substrates based on these characteristics include high-performance filters, functional papers, household products such as cooking sheets and absorbent sheets, substrates for semiconductor devices and wiring boards, substrates of low linear expansion coefficient materials, and capacitors for power storage devices such as capacitors. It is used in the field.
  • the cellulose substrate used in the present invention is preferably used in that the total mass ratio is made of 100% cellulose, but the cellulose and polyethylene terephthalate (PET) relative to the total mass of 70 to 90: 10 to 30% by mass ratio of cellulose It is also possible to use a base material, and to use a flame retardant coating of the cellulose base material.
  • PET polyethylene terephthalate
  • the polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in an organic solvent is supplied to the spinning solution main tank 8 connected to each unit 10a, 10b of the electrospinning apparatus, and the spinning solution main tank 8
  • the polyvinylidene fluoride solution supplied to) is continuously metered into the plurality of nozzles 12 of the nozzle block 11 to which a high voltage is applied through a metering pump (not shown).
  • the polyvinylidene fluoride solution supplied from each nozzle 12 is electrospun and focused on one side of the cellulose substrate located on the collector 13 subjected to the high voltage through the nozzle 12, and each unit 10a In 10b), polyvinylidene fluoride nanofiber nonwoven fabrics are laminated.
  • the polyvinylidene fluoride solution is electrospun in the first unit 10a located at the front end of the electrospinning apparatus 1 to form a first polyvinylidene fluoride nanofiber nonwoven fabric, which is located at the rear end thereof.
  • the polyvinylidene fluoride solution is electrospun to form a second polyvinylidene fluoride nanofiber nonwoven fabric.
  • the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 °. That is, after passing through the first unit 10a, a fabric made of the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated thereon is supplied to the flip device 110, and the flip device 110 The upper surface of the fabric is changed in position to the lower surface, the lower surface of the fabric is rotated up and down 180 ° so that the position is changed to the upper surface.
  • the top and bottom of the fabric is rotated 180 ° so that the other side of the cellulose substrate, on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated, faces the nozzle block 11 of the electrospinning apparatus 1. do.
  • the polyvinylidene fluoride solution supplied from the spinning solution main tank 8 connected thereto in the second unit 10b is electrically connected to the other side of the cellulose substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. Spun to form a second polyvinylidene fluoride nanofiber nonwoven fabric.
  • the cellulose base material is the first unit 10a by the rotation of the feed roller 3 which is operated by the driving of a motor (not shown) and the auxiliary feeder 16 which is driven by the rotation of the feed roller 3.
  • the first and second polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the cellulose substrate while passing through the flip device 110 to the second unit 10b and repeating the above process in a continuous electrospinning process By lamination.
  • the spinning solution supplied to the spinning solution main tank 8 uses a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in an organic solvent, but a solution in which polyvinylidene fluoride and hot melt are mixed. It is possible to use It is also possible to use polyvinylidene fluoride solution and hot melt solution differently provided for each unit. For example, when a flip device is provided in the middle of an electrospinning device consisting of four units, the hot melt solution is electrospun in the first unit and the third unit, and polyvinylidene fluoride in the second unit and the fourth unit. It is possible for the solution to be spun.
  • the hot melt is a polyvinylidene fluoride-based, the hot melt serves as an adhesive between the polyvinylidene fluoride nanofiber nonwoven fabric and the cellulose substrate, thereby preventing the nanofiber nonwoven fabric and the substrate from falling.
  • the fiber diameter is changed in the first unit 10a by varying the spinning conditions for each unit 10a, 10b of the electrospinning apparatus. It is also possible to laminate a large polyvinylidene fluoride nanofiber nonwoven fabric and to continuously laminate the polyvinylidene fluoride nanofiber nonwoven fabric having a small fiber diameter in the second unit 10b.
  • the laminate is formed and rotated 180 ° above and below the fabric through the flip device.
  • the second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is applied to the voltage generator 14b for supplying the voltage to the second unit 10b to give the first polyvinylidene fluorine.
  • Laminated nanofiber nonwoven fabric is laminated on the other side of the cellulose substrate is not laminated.
  • the radiation voltage applied to each of the voltage generators 14a and 14b is 1 kV or more, preferably 15 kV or more, and the voltage applied by the voltage generator 14a of the first unit 10a is the second unit 10b. It is characterized in that it is lower than the voltage given by the voltage generator 14b.
  • the present invention by lowering the voltage of the first unit (10a) of the electrospinning apparatus 1, the first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 300nm is laminated on one side of the cellulose substrate, By applying a high voltage to the second unit 10b, the second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm may be laminated on the other side of the cellulose substrate, thereby producing a filter.
  • the second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is spun and laminated in the first unit 10a, and the first polyvinyl having a fiber diameter of 150 to 300 nm. It is also possible if the lidene fluoride nanofiber nonwoven is spun from the second unit 10b.
  • the number of units of the electrospinning apparatus 1 is composed of three or more, and the voltage is varied for each unit so that three or more polyvinylidene fluoride nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the cellulose substrate. It is also possible to produce a filter.
  • a method of varying the intensity of voltage applied to each unit 10a and 10b is used, but the nozzle 12 and the collector are used.
  • the spacing between (13) it can be formed a nanofiber nonwoven fabric having a gradient of fiber diameter.
  • the concentration and viscosity of the spinning solution, or by adjusting the moving speed of the elongated sheet it is possible to place a gradient of the fiber diameter.
  • the first polyvinylidene fluoride nanofiber nonwoven fabric is laminated on one side of the cellulose substrate in the first unit 10a of the electrospinning apparatus 1 as described above, and the first polyvinyl is laminated with the cellulose substrate. After the fabric made of the lithium fluoride nanofiber nonwoven fabric is rotated 180 ° while passing through the flip device 110, the second polyvinylidene fluoride nano on the other side of the cellulose substrate in the second unit (10b) Fibrous nonwovens are laminated.
  • the present invention is subjected to heat-sealing in a laminating apparatus 90 positioned at the rear end of the electrospinning apparatus 1. To prepare a filter.
  • a polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide (N, N-Dimethylacetamide, DMAc) to prepare a spinning solution, and the spinning solution main of the first and second units of the electrospinning apparatus. It was put in a tank. In the first unit of the electrospinning apparatus, the spinning solution was electrospun on one side of the cellulose substrate to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 ⁇ m.
  • Mw weight average molecular weight
  • the flip device located at the rear end of the first unit is rotated so that the top and bottom of the fabric including the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated thereon are rotated by 180 ° and then supplied to the second unit. do.
  • the second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 ⁇ m is formed by electrospinning the spinning solution on the other side of the cellulose substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. It was.
  • the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces of the cellulose substrate and the cellulose substrate were thermally fused in a laminating apparatus to finally prepare a filter.
  • electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • a spinning solution was prepared by dissolving polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and polyvinylidene fluoride resin for hot melt having a number average molecular weight of 3,000 in dimethylacetamide (N, N-Dimethylacetamide, DMAc).
  • a filter was prepared under the same conditions as in Example 1 except that the first and second units of the electrospinning apparatus were put in the spinning solution main tanks.
  • a polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide to prepare a spinning solution, which was added to the spinning solution main tank of each unit of the electrospinning apparatus.
  • an applied voltage was applied at 15 kV to electrospin the spinning solution on one surface of a cellulose substrate to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m and a fiber diameter of 250 nm. .
  • the top and bottom of the fabric including the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated on one surface of the cellulose substrate are rotated to be reversed by 180 °.
  • Supply to the second unit In the second unit, by applying an applied voltage of 20 kV, the spinning solution is electrospun on the other side of the cellulose base on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated, and has a thickness of 2.5 ⁇ m and a fiber diameter of 130 nm. 2 polyvinylidene fluoride nanofiber nonwoven fabric was laminated.
  • the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces of the cellulose substrate and the cellulose substrate are thermally fused in a laminating apparatus to finally prepare a filter.
  • the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • a polyvinylidene fluoride spinning solution prepared by discharging polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 in dimethylacetamide was prepared in a main tank, and the spinning solutions of the second and fourth units of the electrospinning apparatus were prepared. It was put in a tank.
  • the hot melt solution is electrospun on one side of a cellulose substrate to form a first hot melt electrospinning layer having a thickness of 1 ⁇ m
  • the polymelt is formed on the first hot melt electrospinning layer.
  • the vinylidene fluoride spinning solution was continuously electrospun to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m.
  • the flip device located at the rear end of the second unit has a top and bottom of the fabric including the cellulose and the first hot melt electrospinning layer laminated on one side of the cellulose and the first polyvinylidene fluoride nanofiber nonwoven fabric reversed to 180 °.
  • the hot melt solution was electrospun on the other side of the cellulose base on which the first hot melt electrospinning layer was not laminated to form a second hot melt electrospinning layer having a thickness of 1 ⁇ m.
  • the polyvinylidene fluoride spinning solution was continuously electrospun on the second hot melt electrospinning layer to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m.
  • the first and second hot melt electrospun layers and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces of the cellulose substrate and the cellulose substrate were thermally fused in a laminating apparatus to finally prepare a filter. do.
  • electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • the cellulose base material used in Example 1 was used as a filter medium.
  • a polyamide nanofiber nonwoven fabric was laminated by electrospinning polyamide on both sides of a cellulose substrate to prepare a filter.
  • the DOP test method was used to measure the efficiency of the prepared nanofiber filter.
  • the DOP test method is TSI Incorporated's TSI 3160's automated filter analyzer (AFT) to measure dioctylphthalate (DOP) efficiency, which measures the air permeability, filter efficiency and differential pressure of filter media materials. Can be.
  • AFT automated filter analyzer
  • DOP dioctylphthalate
  • the automated analyzer is a device that measures the air velocity, DOP filtration efficiency, air permeability (breathability), etc. by counting the DOP through the filter sheet to make particles of the desired size and is a very important device for high efficiency filters.
  • DOP% efficiency is defined as:
  • Example 1 Example 2
  • Example 3 Comparative Example 1 0.35 ⁇ m DOP filtration efficiency (%) 95 94 96 93 70
  • the filter including polyvinylidene fluoride nanofiber nonwoven fabric on both surfaces of the cellulose substrate prepared through Examples 1 to 4 of the present invention has better filtration efficiency than Comparative Example 1.
  • the filter prepared in Examples 2 and 4 did not occur in the filter prepared in Examples 2, 4, but prepared by Comparative Example 2 Filter produced desorption of the nanofiber nonwoven fabric.
  • the pressure drop (Pressure drop) was measured by the ASHRAE 52.1 according to the flow rate of 50 / m 3 of the prepared nanofiber nonwoven filter, and the filter life was measured accordingly.
  • Table 2 shows the data comparing Examples 1 to 4 and Comparative Example 1.
  • Example 1 Example 2
  • Example 3 Example 4 Comparative Example 1 Pressure drop (in.wg) 4.4 4.2 4.0 4.3 8.0 Filter life (month) 6.0 6.0 6.1 6.0 3.2
  • the filters prepared through Examples 1 to 4 of the present invention have a lower pressure drop than Comparative Example 1, resulting in less pressure loss and longer filter life, resulting in superior durability.
  • a cellulose substrate is used as the substrate, but a polyethylene terephthalate (PET) substrate may be used as the substrate, and the polymer spinning solution may be a high melting point polyvinylidene fluoride and a low melting point polyvinylidene. It is possible to use a spinning solution mixed with fluoride.
  • the use of the high melting point polyvinylidene fluoride and the low melting point polyvinylidene fluoride in combination prevents separation easily between the nanofiber nonwoven fabric and the substrate without using an adhesive such as hot melt.
  • the filter of the present embodiment it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, a high melting point polyvinylidene fluoride and a low melting point on one side of the polyethylene terephthalate substrate.
  • a first polyvinylidene fluoride nanofiber nonwoven fabric electrospun with a spinning solution containing a melting point polyvinylidene fluoride is laminated, and a fabric made of the first polyvinylidene fluoride nanofiber nonwoven fabric and a polyethylene terephthalate substrate After the top and bottom of the fabric is rotated 180 ° while passing through the flip device 110, the second polyvinylidene fluoride nanofiber by electrospinning the spinning solution on the other side of the polyethylene terephthalate substrate in the second unit (10b) The nonwoven fabric is laminated.
  • the heat-sealing process is performed in the laminating apparatus 90 located at the rear end of the electrospinning apparatus 1.
  • the filter of the invention is produced.
  • nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.
  • a high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank. In the first unit of the electrospinning apparatus, the spinning solution was electrospun on a polyethylene terephthalate substrate having a basis weight of 130 g / m 2 to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m.
  • the polyethylene terephthalate which is not bonded to the first polyvinylidene fluoride nanofiber nonwoven in a fabric laminated in the order of the polyethylene terephthalate substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric
  • the fabric is turned upside down 180 ° so that the other side of the phthalate substrate faces the nozzle block.
  • the spinning solution was continuously electrospun on the polyethylene terephthalate substrate to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m.
  • the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate were thermally fused in a laminating apparatus to finally prepare a filter.
  • electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • a high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank.
  • the polyethylene terephthalate in which the first polyvinylidene fluoride nanofiber nonwoven is not bonded in the fabric laminated in the order of the polyethylene terephthalate substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric The fabric is turned upside down 180 ° so that the other side of the phthalate substrate faces the nozzle block.
  • a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m and a fiber diameter of 130 nm was applied by applying an applied voltage of 20 kV on the polyethylene terephthalate substrate facing the nozzle block and continuously spinning the spinning solution. Lamination was performed.
  • the polyethylene terephthalate substrate and first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces thereof were thermally fused in a laminating apparatus to finally prepare a filter.
  • the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • the polyethylene terephthalate substrate used in Example 5 was used as filter media.
  • a filter was prepared by electrospinning polyvinylidene fluoride on both sides of a polyethylene terephthalate substrate.
  • Example 5 Comparative Example 3 0.35 ⁇ m DOP filtration efficiency (%) 92 94 71
  • Example 5 Comparative Example 3 Pressure drop (in.wg) 4.4 4.2 8.5 Filter life (month) 5.9 6.0 3.2
  • the filters manufactured through Examples 5 and 6 of the present invention have a lower pressure drop than Comparative Example 3, resulting in less pressure loss and longer filter life, resulting in superior durability.
  • the filter produced in Examples 5 and 6 did not occur in the filter prepared in Examples 5, 6, but prepared by Comparative Example 4 Filter produced desorption of the nanofiber nonwoven fabric.
  • the present invention used a cellulose substrate as a base material, but in another embodiment of the present invention was used a cellulose base, in another embodiment of the present invention it is possible to use a two-component base material as a base material,
  • the polymer used in the working liquid it is possible to use a mixture of polyvinylidene fluoride and hot melt.
  • the hot melt is preferably polyvinylidene fluoride-based hot melt.
  • the polyethylene terephthalate which the two components from which a melting point differs is most preferable.
  • the polyethylene terephthalate bicomponent substrate may be classified into a sheath-core, a side-by-side, a C-type, and the like.
  • the sheath portion is a low melting polyethylene terephthalate
  • the core portion is composed of a general polyethylene terephthalate. Wherein the sheath portion is about 10 to 90% by weight and the core consists of about 90 to 10% by weight.
  • the sheath portion acts as a thermal binder forming the outer surface of the binder fiber and has a melting point of about 80 to 150 ° C. and the core has a melting point of about 160 to 250 ° C.
  • the cis-core bicomponent base material used as an embodiment in the present invention includes an amorphous polyester copolymer in which the melting point does not appear in the sheath portion with a conventional melting point analyzer, and the core component is preferably a relatively high melting point. It is a heat-adhesive composite fiber using the component.
  • the polyester copolymer contained in a sheath part is co-polyester whose 50-70 mol% is a polyethylene terephthalate unit. 30 to 50 mol% is preferably isophthalic acid as the copolymerized acid component, but other ordinary dicarboxylic acids are possible.
  • the high melting point component used as the core component is a polymer having a melting point of 160 ° C. or higher, and examples of the high melting point component include polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene terephthalate copolymer, and polypropylene.
  • the basis weight of the two-component base material used in this embodiment is preferably 10 to 50g / m 2.
  • the filter of the present embodiment it is manufactured by the manufacturing method as described above, wherein the spinning solution in which polyvinylidene fluoride and hot melt are mixed in the first unit 10a of the electrospinning apparatus 1 is based on the polyethylene terephthalate substrate.
  • Electrospun on one side of the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric is laminated, the fabric consisting of the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric and polyethylene terephthalate substrate flip device 110 After the upper and lower sides of the fabric are rotated 180 ° while passing through), the spinning solution is electrospun on the other side of the polyethylene terephthalate substrate in the second unit 10b so that the second polyvinylidene fluoride-hot melt nanofiber nonwoven fabric It is laminated.
  • the heat-sealing process in the laminating apparatus 90 located at the rear end of the electrospinning apparatus 1 Via the filter of the present invention is produced.
  • nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.
  • a spinning solution was prepared by dissolving polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and polyvinylidene fluoride resin for hot melt having a number average molecular weight of 3,000 in dimethylacetamide (N, N-Dimethylacetamide, DMAc). And into the spinning solution main tanks of the first and second units of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the spinning solution was electrospun on one side of the bicomponent substrate to form a first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m.
  • Mw weight average molecular weight
  • DMAc dimethylacetamide
  • the upper and lower portions of the fabric including the bicomponent substrate and the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric laminated thereon are rotated to be reversed by 180 °, and then the second Supply to the unit.
  • the second polyvinylidene fluoride-hot melt nano having a thickness of 2.5 ⁇ m by electrospinning the spinning solution on the other side of the two-component substrate on which the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric is not laminated. Fibrous nonwovens were laminated.
  • the first and second polyvinylidene fluoride-hotmelt nanofiber nonwoven fabrics laminated on both surfaces of the bicomponent substrate and the bicomponent substrate were thermally fused in a laminating apparatus to finally prepare a filter.
  • electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • a filter was manufactured in the same manner as in Example 7, except that the applied voltage, which is the electrospinning condition of the first unit, was applied to 15 kV, and the applied voltage of the second unit was applied to 20 kV.
  • a filter was prepared by electrospinning a layer of polyvinylidene fluoride-hotmelt nanofiber nonwoven fabric on the bicomponent substrate used in Example 7.
  • a polyamide nanofiber nonwoven fabric was laminated by electrospinning polyamide on both sides of a bicomponent substrate to prepare a filter.
  • Example 7,8 and Comparative Example 5 The filtration efficiency of Example 7,8 and Comparative Example 5 was measured by the same method as shown in Table 5 below.
  • Example 7 Comparative Example 5 0.35 ⁇ m DOP filtration efficiency (%) 93 95 88
  • Example 7 the pressure drop and the filter life of Example 7, 8 and Comparative Example 5 were measured in accordance with the above measurement method and are shown in Table 6.
  • Example 7 Comparative Example 5 Pressure drop (in.wg) 7.0 7.2 10.0 Filter life (month) 4.5 4.3 3.2.
  • the filter manufactured according to Example 7 has a lower pressure drop than Comparative Example 5, resulting in less pressure loss and longer filter life resulting in superior durability.
  • Example 7 and 8 did not occur detachment of the nanofiber nonwoven fabric, Comparative Example 6 The filter produced by the desorption of the nanofiber nonwoven fabric occurred.
  • a cellulose substrate is used as a substrate, but in another embodiment of the present invention, a substrate laminated with a first bicomponent substrate, a polyethylene terephthalate (PET) substrate, and a second bicomponent substrate is used as the substrate.
  • PET polyethylene terephthalate
  • the polymer spinning solution it is possible to prepare a filter using a polyvinylidene fluoride spinning solution in which polyvinylidene fluoride is dissolved in a solvent.
  • a 1st and 2nd bicomponent base material is the same material as the bicomponent base material described in the said Example, and basis weight is 10-50 g / m ⁇ 2> .
  • the filter of the present embodiment it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, the first bicomponent substrate, polyethylene terephthalate (PET) substrate, and second isomerism.
  • the first polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride spinning solution on one side of the first bicomponent substrate of the substrate laminated with the powder substrate.
  • the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 °.
  • the second polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride spinning solution on the second bicomponent substrate in the second unit 10b. Accordingly, after the first and second polyvinylidene fluoride nanofiber nonwoven fabrics are laminated on both surfaces of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate, an electrospinning apparatus is formed.
  • the filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90 positioned at the rear end of (1).
  • nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.
  • a polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide (N, N-Dimethylacetamide, DMAc) to prepare a spinning solution, and the spinning solution main of the first and second units of the electrospinning apparatus. It was put in a tank. And a basis weight of 30g / m 2 in the first two-component base material, a basis weight of 55g / m 2 of polyethylene terephthalate substrate, a basis weight of 30g / m 2 in a second two-component collector of the electrospinning apparatus of the layered substrate in the order of the base material Placed in phase.
  • Mw weight average molecular weight
  • the spinning solution was electrospun on the first bicomponent substrate to laminate a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 ⁇ m.
  • the flip device located at the rear end of the first unit includes a first bicomponent substrate and a first polyvinylidene fluoride nanofiber nonwoven fabric, a polyethylene terephthalate substrate, and a fabric laminated in the order of the second bicomponent substrate. ° rotated.
  • a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 ⁇ m was formed by continuously electrospinning the spinning solution on one surface of the second bicomponent substrate not bonded to the polyethylene terephthalate substrate. .
  • fabrics composed of the first and second bicomponent substrates and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate were thermally fused in a laminating apparatus. Finally, a filter is prepared. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • a polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide to prepare a spinning solution, which was put into the spinning solution main tanks of the first and second units of the electrospinning apparatus.
  • the first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 ⁇ m and a fiber diameter of 250 nm is formed by electrospinning the spinning solution on the first bicomponent substrate by applying an applied voltage of 15 kV. Lamination was performed.
  • the flip device located at the rear end of the first unit has a 180 ° top and bottom of the fabric laminated in the order of the first bicomponent substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric, polyethylene terephthalate, and the second bicomponent substrate. Rotated.
  • the spinning solution is continuously electrospun on one surface of the second bicomponent substrate which is not bonded to the polyethylene terephthalate substrate by applying an applied voltage of 20 kV, thereby obtaining a thickness of 3 ⁇ m and a fiber diameter of 130 nm.
  • 2 polyvinylidene fluoride nanofiber nonwoven fabric was laminated.
  • fabrics composed of the first and second bicomponent substrates and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate were thermally fused in a laminating apparatus. Finally, a filter is prepared. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • the polyethylene terephthalate substrate used in Example 9 was used as filter media.
  • a filter was prepared by electrospinning polyvinylidene fluoride on both sides of a polyethylene terephthalate substrate.
  • Example 10 Comparative Example 7 0.35 ⁇ m DOP filtration efficiency (%) 93 95 71
  • Example 9 Example 10 Comparative Example 7 Pressure drop (in.wg) 4.5 4.2 8.5 Filter life (month) 5.8 6.0 3.2
  • the filter manufactured according to Example 9 has a lower pressure drop than Comparative Example 7, resulting in less pressure loss and longer filter life resulting in superior durability.
  • the filter prepared according to Examples 9 and 10 and Comparative Example 8 was measured by desorption of the nanofiber nonwoven fabric and the filter substrate by the ASTM D 2724 method, the nanofiber nonwoven fabric in the filters prepared according to Examples 9 and 10 While no desorption occurred, the filter prepared in Comparative Example 8 had desorption of the nanofiber nonwoven fabric.
  • a cellulose substrate is used as a substrate, but in another embodiment of the present invention, a first bicomponent substrate, a polyethylene terephthalate (PET) substrate, and a second binary component are used as the substrate mentioned in the above embodiment.
  • PET polyethylene terephthalate
  • the filter of the present embodiment it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, the first bicomponent substrate, polyethylene terephthalate (PET) substrate, and second isomerism.
  • a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride are mixed on one side of the first bicomponent substrate of the substrate laminated with the powder substrate to electrospin the spinning solution dissolved in the solvent to obtain the first high melting point and low Melting point polyvinylidene fluoride nanofiber nonwovens are laminated.
  • the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 degrees.
  • the spinning solution is electrospun on the second bicomponent substrate to form a second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric.
  • the first and second high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabrics are laminated on both surfaces of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate, respectively.
  • the filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90 located at the rear end of the electrospinning apparatus (1).
  • nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.
  • a high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank.
  • the first unit of the electrospinning device having basis weight of 30g / m 2 in the first two-component base material, a basis weight of 130g / m 2 of a polyethylene terephthalate base material, the basis weight is laminated in the order of 30g / m 2 in a second two-component base
  • the spinning solution was electrospun on the first bicomponent substrate of the woven fabric to laminate the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m.
  • the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate, and the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric are laminated in the fabric.
  • the top and bottom of the fabric is flipped 180 ° so that one side of the second bicomponent substrate, which is not bonded to the polyethylene terephthalate substrate, faces the nozzle block.
  • the spinning solution was continuously electrospun on one surface of the second bicomponent substrate facing the nozzle block to form a second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m.
  • the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent base, the polyethylene terephthalate base, the second bicomponent base, the second high melting point and the low melting point polyvinylidene fluoride nano The fabric laminated in the order of fiber nonwoven fabric was heat-sealed in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • a high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank.
  • the first unit of the electrospinning device having basis weight of 30g / m 2 in the first two-component base material, a basis weight of 130g / m 2 of a polyethylene terephthalate base material, the basis weight is laminated in the order of 30g / m 2 in a second two-component base Applying a voltage of 15 kV on the first bicomponent substrate of the woven fabric and electrospinning the spinning solution to laminate the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 ⁇ m and a fiber diameter of 250 nm. It was.
  • the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate, and the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric are laminated in the fabric.
  • the top and bottom of the fabric is flipped 180 ° so that one side of the second bicomponent substrate, which is not bonded to the polyethylene terephthalate substrate, faces the nozzle block.
  • a second high melting point and low melting point polyvinyl having a thickness of 2.5 ⁇ m and a fiber diameter of 130 nm was applied by applying an applied voltage of 20 kV to one surface of the second bicomponent substrate facing the nozzle block and continuously spinning the spinning solution. Liden fluoride nanofiber nonwovens were laminated.
  • the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric After electrospinning, the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent base, the polyethylene terephthalate base, the second bicomponent base, the second high melting point and the low melting point polyvinylidene fluoride nano
  • the fabric laminated in the order of fiber nonwoven fabric was heat-sealed in a laminating apparatus to finally prepare a filter.
  • the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • the polyethylene terephthalate substrate used in Example 11 was used as filter media.
  • a filter was prepared by electrospinning polyvinylidene fluoride on both sides of a polyethylene terephthalate substrate.
  • Example 11 Comparative Example 9 Pressure drop (in.wg) 4.5 4.6 8.9 Filter life (month) 5.8 5.8 3.0
  • a cellulose substrate is used as a substrate, but in another embodiment of the present invention, a substrate laminated with a first bicomponent substrate, a polyethylene terephthalate (PET) substrate, and a second bicomponent substrate is used as the substrate.
  • PET polyethylene terephthalate
  • the polymer spinning solution it is possible to manufacture a filter using a nylon spinning solution in which nylon is dissolved in a solvent.
  • nylon includes nylon 6, nylon 66, nylon 46, nylon 12, and the like.
  • the filter of the present embodiment it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, the first bicomponent substrate, polyethylene terephthalate (PET) substrate, and second isomerism.
  • the first nylon nanofiber nonwoven fabric is laminated by electrospinning the nylon spinning solution on one side of the first bicomponent substrate of the substrate laminated with a powder substrate.
  • the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 degrees. Thereafter, the nylon spinning solution is electrospun on the second bicomponent substrate in the second unit 10b to stack the second nylon nanofiber nonwoven fabric.
  • the electrospinning apparatus 1 The filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90 located at the rear end.
  • nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.
  • Nylon 6 was dissolved in formic acid to prepare a nylon 6 solution, which was charged into the spinning solution main tanks of the first and second units of the electrospinning apparatus. And a basis weight of 30g / m 2 in the first two-component base material, a basis weight of 55g / m 2 of polyethylene terephthalate substrate, a basis weight of 30g / m 2 in a second two-component collector of the fabric laminated in the order described electrospinning devices Placed in phase.
  • the nylon 6 solution was electrospun on the first bicomponent substrate to laminate a first nylon 6 nanofiber nonwoven fabric having a thickness of 3 ⁇ m.
  • the flip device located at the rear end of the first unit is not bonded to the polyethylene terephthalate substrate in the fabric laminated in the order of the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate and the first nylon 6 nanofiber nonwoven fabric.
  • the top and bottom of the fabric is rotated 180 ° so that one side of the second bicomponent substrate is directed toward the nozzle block.
  • the nylon 6 solution was continuously electrospun on one surface of the second bicomponent substrate facing the nozzle block to form a second nylon 6 nanofiber nonwoven fabric having a thickness of 3 ⁇ m.
  • the first and second bicomponent substrates and the first and second nylon 6 nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate are thermally fused in a laminating apparatus to finally filter.
  • electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • Nylon 6 was dissolved in formic acid to prepare a nylon 6 solution, which was charged into the spinning solution main tanks of the first and second units of the electrospinning apparatus. And a basis weight of 30g / m 2 in the first two-component base material, a basis weight of 55g / m 2 of polyethylene terephthalate substrate, a basis weight of 30g / m 2 in a second two-component collector of the electrospinning apparatus of the layered substrate in the order of the base material Placed in phase.
  • the spinning solution is electrospun on the first bicomponent substrate of the substrate to laminate the first nylon 6 nanofiber nonwoven fabric having a thickness of 3 ⁇ m and a fiber diameter of 250 nm. Formed.
  • the flip device located at the rear end of the first unit is not bonded to the polyethylene terephthalate substrate in the fabric laminated in the order of the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate and the first nylon 6 nanofiber nonwoven fabric.
  • the top and bottom of the fabric is rotated 180 ° so that one side of the second bicomponent substrate that faces the nozzle block.
  • the spinning solution is continuously electrospun on one surface of the second bicomponent substrate which is not bonded to the polyethylene terephthalate substrate by applying an applied voltage of 20 kV, thereby obtaining a thickness of 3 ⁇ m and a fiber diameter of 130 nm.
  • Two nylon 6 nanofiber nonwoven fabrics were laminated.
  • the first and second bicomponent substrates and the first and second nylon 6 nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate are thermally fused in a laminating apparatus to finally prepare a filter. .
  • the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • the polyethylene terephthalate substrate used in Example 13 was used as filter media.
  • Nylon 6 was electrospun on both sides of a polyethylene terephthalate substrate to prepare a filter.
  • cellulose is used as the substrate, but in another embodiment of the present invention, it is possible to use a general substrate commonly used in a filter as the substrate.
  • the general substrate includes a cellulose substrate, a PET substrate, synthetic fibers, natural fibers and the like.
  • a spinning solution in which polyurethane and polyvinylidene fluoride are mixed as the polymer spinning solution used.
  • the polyurethane and polyvinylidene fluoride is mixed with one side of the substrate in the first unit (10a) of the electrospinning apparatus (1)
  • the spinning solution dissolved therein was electrospun to form a laminate of the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric.
  • the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 degrees.
  • the second polyurethane solution and the polyvinylidene fluoride mixed nanofiber nonwoven fabric are formed by electrospinning the spinning solution on the other side of the substrate in the second unit 10b. Accordingly, the first and second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabrics are laminated on both surfaces of the substrate, and then heat-sealed in the laminating apparatus 90 positioned at the rear end of the electrospinning apparatus 1. Through the process, the filter of the present invention is manufactured.
  • Polyurethane prepared by reacting dicyclohexyl methane 4,4-diisocyanate with polyol and polyvinylidene fluoride having a weight average molecular weight of 50,000 in dimethyl formic acid were dissolved in dimethylformamide (DMF) to prepare a spinning solution. And into the spinning solution main tank of each unit of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the spinning solution is electrospun on one side of the cellulose substrate to laminate the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric having a thickness of 2 ⁇ m.
  • the top and bottom of the fabric made of the cellulose substrate and the laminated first nanofiber nonwoven fabric were rotated 180 ° and the fabric was supplied to the second unit.
  • a second polyurethane having a thickness of 2 ⁇ m by electrospinning the spinning solution on the other side of the cellulose base on which the first polyurethane and the polyvinylidene fluoride mixed nanofiber nonwoven fabric are not laminated And polyvinylidene fluoride mixed nanofiber nonwoven fabric.
  • the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • the cellulose substrate used in Example 15 was used as the filter media.
  • a polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.
  • Example 15 and Comparative Example 13 The filtration efficiency of Example 15 and Comparative Example 13 was measured by the filtration efficiency measurement method and shown in Table 13. In addition, the pressure drop and filter life of the filter prepared in Example 15 and Comparative Example 13 were measured and shown in Table 14.
  • Example 15 of the present invention has better filtration efficiency and less pressure loss than the Comparative Example 13, resulting in longer filter life, resulting in excellent durability.
  • the electrospinning apparatus 1 includes two units 10a and 10b
  • another embodiment includes four units 10a, 10b, 10c, and 10d. It is possible. That is, as shown in FIG. 16, the electrospinning apparatus 1 'is provided with four units 10a, 10b, 10c, and 10d, and the two units 10a and 10b of the front end and the two of the rear end are shown. Between the units (10c, 10d) is provided with a flip device 110 for rotating the fabric, the upper surface of the fabric is changed position to the lower surface, the lower surface is changed position to the upper surface.
  • the spinning solution is electrospun on the substrate through the two units 10a and 10b of the front end portion, thereby forming a nanofiber nonwoven fabric laminated, and rotating the fabric 180 degrees through the flip device 110.
  • the rotated fabric is electrospun into the spinning solution in the two units 10c and 10d at the rear end so that the nanofiber nonwoven fabric is laminated on the other side of the substrate.
  • the filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90.
  • Each of the units 10a, 10b, 10c, and 10d electrospins the same polymer spinning solution, or electrospins the polymer spinning solution of different materials to produce a filter material such as a nonwoven fabric.
  • each of the units (10a, 10b, 10c, 10d) is provided with a voltage generator (14a, 14b, 14c, 14d) for each unit.
  • the electrospinning voltages of the units 10a, 10b, 10c, and 10d of the electrospinning apparatus 1 ' are set differently so that the fiber diameters are different for each unit 10a, 10b, 10c, and 10d.
  • Polyvinylidene fluoride nanofiber nonwovens are formed.
  • a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is formed, and in the second unit 10b having a high radiation voltage, the fiber diameter is A second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 100 to 150 nm is formed, and a third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is formed in the third unit 10c having a low radiation voltage.
  • a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is formed.
  • the first unit 10a and the second unit 10b are moved by the flip device 110 provided between the second unit 10b and the third unit 10c of the electrospinning apparatus 1 '.
  • the top and bottom of the fabric passed through is rotated 180 °. That is, in the first unit 10a, a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on one side of the substrate, and in the second unit 10b, the first polyvinylidene fluorine is formed.
  • a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the ride nanofiber nonwoven fabric.
  • the fabric consisting of the substrate, the first polyvinylidene fluoride nanofiber nonwoven fabric, and the second polyvinylidene fluoride nanofibre nonwoven fabric passed through the first unit 10a and the second unit 10b may be flipped. 110, the upper surface of the fabric is repositioned to the lower surface, the lower surface of the fabric is rotated to 180 ° so that the top and bottom of the fabric is changed to the upper surface. In other words, the top and bottom of the fabric rotate 180 ° so that the other side of the base material on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated is directed toward the nozzle block 11 of the electrospinning apparatus 1 '. do.
  • a third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on the other side of the substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated.
  • a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric.
  • the spinning solution supplied to the spinning solution main tank 8 uses a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in an organic solvent, but a solution in which polyvinylidene fluoride and hot melt are mixed. It is possible to use
  • the hot melt uses a polyvinylidene fluoride-based hot melt, and the hot melt serves as an adhesive between the polyvinylidene fluoride nanofiber nonwoven fabric and the cellulose substrate, thereby preventing the nanofiber nonwoven fabric and the substrate from falling off.
  • the radiation diameter is applied to the voltage generator 14a for supplying the voltage to the first unit 10a and the voltage generator 14c for supplying the voltage to the third unit 10c, thereby lowering the fiber diameter.
  • the first and third polyvinylidene fluoride nanofiber nonwoven fabrics having 150 to 200 nm are formed, and a voltage is applied to the voltage generator 14b and the fourth unit 10d for supplying the voltage to the second unit 10b. It is characterized in that the second and fourth polyvinylidene fluoride nanofiber nonwoven fabrics having a fiber diameter of 100 to 150 nm are formed by applying a high radiation voltage to the supplied voltage generator 14d.
  • the number of units of the electrospinning apparatus 1 ' is 5 or more, and the voltage is varied for each unit so that at least three polyvinylidene fluoride nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate. It is also possible to produce a filter.
  • a method of varying the intensity of voltage applied to each unit 10a, 10b, 10c, and 10d is used. 12) and the collector 13 may be adjusted to form a nanofiber nonwoven fabric having a gradient of fiber diameter.
  • the type of spinning solution and the voltage intensity supplied are the same, the closer the spinning distance, the larger the fiber diameter, and the longer the spinning distance, the smaller the fiber diameter. It is also possible to form.
  • the concentration and viscosity of the spinning solution or by adjusting the moving speed of the elongated sheet it is possible to place a gradient of the fiber diameter.
  • a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on one side of the substrate
  • a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the first polyvinylidene fluoride nanofiber nonwoven fabric.
  • the fabric consisting of the substrate, the first polyvinylidene fluoride nanofiber nonwoven fabric, and the second polyvinylidene fluoride nanofibre nonwoven fabric passed through the first unit 10a and the second unit 10b may be flipped.
  • the upper end of the fabric is changed in position to the lower end, the lower end of the fabric is rotated by 180 °, the top and bottom of the fabric so that the position is changed to the upper end.
  • the top and bottom of the fabric rotate 180 ° so that the other side of the base material on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated is directed toward the nozzle block 11 of the electrospinning apparatus 1 '. do.
  • a third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on the other side of the substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated.
  • a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric. Then, the filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90.
  • a polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide (N, N-Dimethylacetamide, DMAc) to prepare a spinning solution, and the first, second, third, and third agents of the electrospinning apparatus 4 units of spinning solution were added to the main tank.
  • an applied voltage was applied at 17 kV to electrospin the spinning solution on one side of the cellulose substrate to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 ⁇ m and a fiber diameter of 170 nm. .
  • a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 ⁇ m and a fiber diameter of 130 nm was laminated on the first polyvinylidene fluoride nanofiber nonwoven fabric by applying an applied voltage of 20 kV. .
  • a third polyvinylidene fluoride nanofiber having a thickness of 2 ⁇ m and a fiber diameter of 170 nm is formed by electrospinning the spinning solution on one surface of the cellulose substrate facing the nozzle block by applying an applied voltage of 17 kV.
  • the nonwoven fabric was laminated.
  • a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 ⁇ m and a fiber diameter of 130 nm was laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric by applying an applied voltage of 20 kV.
  • the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter.
  • a spinning solution was prepared by dissolving polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and polyvinylidene fluoride resin for hot melt having a number average molecular weight of 3,000 in dimethylacetamide (N, N-Dimethylacetamide, DMAc).
  • Mw weight average molecular weight
  • N number average molecular weight of 3,000
  • DMAc dimethylacetamide
  • the cellulose substrate used in Example 16 was used as the filter media.
  • a polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.
  • PVDF low melting point polyvinylidene fluoride
  • the filter of the present embodiment it is manufactured by the above-described manufacturing method, but under the condition that the supply voltages of the voltage supply devices 14a, 14b, 14c, 14d of the electrospinning device 1 'are the same,
  • the low melting point polyvinylidene fluoride spinning solution is electrospun in the unit 10a and the third unit 10c, and the high melting point polyvinylidene fluoride spinning solution is in the second unit 10b and the fourth unit 10d.
  • the filter is manufactured with an electric chamber.
  • the spinning solution may be prepared by the electrospinning including the hot melt.
  • the low melting point polyvinylidene fluoride is used to partially melt the low melting point polyvinylidene fluoride nanofiber nonwoven fabric during thermal welding, thereby acting as an adhesive between the substrate and the high melting point polyvinylidene fluoride nanofiber nonwoven fabric. By preventing the detachment of the substrate and the high melting point polyvinylidene fluoride nanofiber nonwoven fabric.
  • the first low melting polyvinylidene fluoride nanofiber nonwoven fabric is laminated on one side of the substrate in the first unit 10a of the electrospinning apparatus 1 'by the above-described method, and in the second unit 10b. After the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated on the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the substrate, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the first The fabric laminated in the order of the high melting point polyvinylidene fluoride nanofiber nonwoven fabric is rotated 180 ° while passing through the flip device 110.
  • a second low melting polyvinylidene fluoride nanofiber nonwoven fabric is laminated on the other side of the substrate on which the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric is not laminated in the third unit 10c, and the second unit 10c
  • a second high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated on the low melting point polyvinylidene fluoride nanofiber nonwoven fabric.
  • the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the substrate, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric and the second high melting point polyvinylidene fluoride Fabrics laminated in the order of the ride nanofiber nonwoven fabric are manufactured by the filter of the present invention through a process of heat fusion in the laminating apparatus 90.
  • a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 was dissolved in dimethyl acetamide to supply a low melting point polyvinylidene fluoride solution to the spinning solution main tanks of the first and third units of the electrospinning apparatus
  • a high melting point polyvinylidene fluoride having a molecular weight of 50,000 was dissolved in dimethylacetamide to prepare a high melting point polyvinylidene fluoride solution and supplied to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus.
  • the low melting point polyvinylidene fluoride solution was electrospun on one side of a cellulose substrate having a basis weight of 100 g / m 2 to form a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric.
  • a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the high melting point polyvinylidene fluoride solution on the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric. Formed.
  • the first low melting point polyvinylidene fluoride in the fabric laminated in the order of the cellulose base, the first low melting point polyvinylidene fluoride, and the first high melting point polyvinylidene fluoride The top and bottom of the fabric is rotated 180 ° so that the other side of the cellulose substrate, which is not bonded to the nanofiber nonwoven fabric, faces the nozzle block. Subsequently, in the third unit of the electrospinning apparatus, the low melting polyvinylidene fluoride solution is electrospun on the other side of the cellulose substrate facing the nozzle block to form a second low melting polyvinylidene fluoride nanofiber nonwoven fabric.
  • a second high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the high melting point polyvinylidene fluoride solution on the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric.
  • the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the cellulose base, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the second high melting point polyvinylidene fluoride nanofiber nonwoven fabric Fabrics laminated in the order of the melting point polyvinylidene fluoride nanofiber nonwoven fabric were thermally fused in a laminating apparatus to finally prepare a filter. At this time, the electrospinning was carried out under the conditions of 40cm, applied voltage 20kV, spinning solution flow rate 0.1mL / h, temperature 22 °C, humidity 20% between the electrode and the collector.
  • a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 was dissolved in dimethyl acetamide to supply a low melting point polyvinylidene fluoride solution to the spinning solution main tanks of the first and third units of the electrospinning apparatus
  • a high melting point polyvinylidene fluoride having a molecular weight of 50,000 was dissolved in dimethylacetamide to prepare a high melting point polyvinylidene fluoride solution and supplied to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus.
  • the low melting point polyvinylidene fluoride solution is electrospun on one side of a cellulose substrate by applying an applied voltage of 17 kV to form a first low melting point polyvinylidene having a thickness of 2 ⁇ m and a fiber diameter of 200 nm. Fluoride nanofiber nonwoven fabrics were laminated.
  • an applied voltage is applied at 20 kV to electrospin the high melting point polyvinylidene fluoride solution on the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric to obtain a thickness of 2 ⁇ m and a fiber diameter of 130 nm.
  • the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric was laminated.
  • the flip device located at the rear end of the second unit of the electrospinning apparatus comprises a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric and a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated on the cellulose substrate and one side thereof. Rotating the top and bottom of the fabric 180 ° so that the other side of the cellulose substrate on which the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric is not laminated in the fabric includes the nozzle block of the electrospinning apparatus.
  • the low melting point polyvinylidene fluoride solution is electrospun onto one surface of the cellulose substrate facing the nozzle block by applying an applied voltage of 17 kV, and the second diameter and the fiber diameter are 200 nm.
  • 2 Low melting polyvinylidene fluoride nanofiber nonwoven fabric was laminated.
  • an applied voltage is applied at 20 kV to electrospin the high melting point polyvinylidene fluoride solution on the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric to obtain a thickness of 2 ⁇ m and a fiber diameter of 130 nm.
  • a phosphorus second high melting point polyvinylidene fluoride nanofiber nonwoven fabric was laminated. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the cellulose base, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the second high melting point polyvinylidene fluoride nanofiber nonwoven fabric Fabrics laminated in the order of the melting point polyvinylidene fluoride nanofiber nonwoven fabric were thermally fused in a laminating apparatus to finally prepare a filter.
  • the cellulose substrate used in Example 18 was used as the filter media.
  • a polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.
  • the filters manufactured through Examples 18 and 19 of the present invention have a lower pressure drop than Comparative Example 17, resulting in less pressure loss and longer filter life, resulting in superior durability.
  • polyvinylidene fluoride nanofiber nonwoven fabric two layers of polyvinylidene fluoride nanofiber nonwoven fabric are laminated on both sides of the substrate, but in another embodiment, nylon nanofiber nonwoven fabric and polyvinylidene fluoride nanofiber are laminated on both sides of the substrate. It is possible to laminate the nonwoven fabric.
  • the filter of the present embodiment is manufactured by the above-described manufacturing method, first, the nylon solution in which the nylon is dissolved in an organic solvent, the first unit 10a and the third unit 10c of the electrospinning apparatus 1 '.
  • the polyvinylidene fluoride solution in which the polyvinylidene fluoride was dissolved in an organic solvent was connected to the second unit 10b and the fourth unit 10d of the electrospinning apparatus.
  • the spinning solution main tank 8 connected to each of the units 10a, 10b, 10c, and 10d is connected to a nozzle block to which a high voltage is applied in the units 10a, 10b, 10c, and 10d through a metering pump (not shown).
  • Each of the nozzles 12 of 11 is continuously metered.
  • the nylon solution is electrospun on the substrate to form a first nylon nanofiber nonwoven fabric.
  • a high voltage is applied to the voltage generator 14a of the first unit 10a so that the fiber diameter of the first nylon nanofiber nonwoven fabric is 100 to 150 nm.
  • the polyvinylidene fluoride solution is electrospun onto the first nylon nanofiber nonwoven fabric to laminate the first polyvinylidene fluoride nanofiber nonwoven fabric.
  • the substrate, the first nylon nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric are provided by the flip device 110 provided at the rear end of the second unit 10b of the electrospinning apparatus 1 '.
  • the top and bottom of the fabric made is rotated 180 °. That is, the upper end of the fabric is changed in position to the lower end, the lower end of the fabric is rotated to change the position to the upper end.
  • the top and bottom of the fabric are rotated 180 ° such that the other side of the substrate, on which the first nylon nanofiber nonwoven fabric is not laminated, faces the nozzle block 11 of the electrospinning apparatus 1 '.
  • the nylon solution is electrospun on the other side of the substrate to form a second nylon nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm.
  • the polyvinylidene fluoride solution is electrospun at a high voltage on the second nylon nanofiber nonwoven fabric to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 80 to 100 nm.
  • a filter is manufactured.
  • the nylon solution may be spun by adding a polyamide-based hot melt.
  • a nylon solution was prepared by dissolving nylon 6 chips having a relative viscosity of 2.3 in 96% sulfuric acid solution in formic acid.
  • the nylon solution was introduced into the main tanks of the spinning solution of the first and third units of the electrospinning apparatus, respectively.
  • the vinylidene fluoride was dissolved in dimethylacetamide to prepare a polyvinylidene fluoride solution, which was added to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus, respectively.
  • an applied voltage was applied at 17 kV to electrospin the nylon solution on one surface of a cellulose substrate to form a first nylon nanofiber nonwoven fabric having a thickness of 2 ⁇ m and a fiber diameter of 160 nm.
  • an applied voltage was applied at 20 kV to electrospin the polyvinylidene fluoride solution on the first nylon nanofiber nonwoven fabric to form a first polyvinylidene fluoride nanofiber nonwoven fabric.
  • the flip device located at the rear end of the second unit, the first nylon in the fabric laminated in the order of the cellulose substrate and the first nylon nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated on one surface of the cellulose substrate.
  • the top and bottom of the fabric is rotated 180 ° so that the other side of the cellulose substrate, on which the nanofiber nonwoven fabric is not laminated, faces the nozzle block of the electrospinning apparatus.
  • an applied voltage was applied at 17 kV to electrospin the nylon solution on the other side of the cellulose substrate to form a second nylon nanofiber nonwoven fabric having a thickness of 2 ⁇ m and a fiber diameter of 160 nm.
  • an applied voltage was applied at 20 kV to electrospin the polyvinylidene fluoride solution on the second nylon nanofiber nonwoven fabric to form a second polyvinylidene fluoride nanofiber nonwoven fabric.
  • the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%. After electrospinning, the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter.
  • nylon solution was prepared by dissolving a nylon 6 chip having a relative viscosity of 2.3 and a polyamide resin for hot melt having a number average molecular weight of 3,000 in formic acid in a 96% sulfuric acid solution.
  • the filter was prepared under the same conditions as.
  • the cellulose substrate used in Example 20 was used as the filter media.
  • Nylon 6 was electrospun on both sides of the cellulose base, and a nylon 6 nanofiber nonwoven fabric was laminated to prepare a filter.
  • Example 20 Comparative Example 19 Pressure drop (in.wg) 4.4 4.2 8.0 Filter life (month) 6.0 6.0 3.2
  • the filters manufactured through Examples 20 and 21 had a lower pressure drop than Comparative Example 19, resulting in less pressure loss and longer filter life resulting in superior durability.
  • the separation of the nanofiber nonwoven fabric and the filter substrate by the measuring method to determine whether the separation of the nanofiber nonwoven fabric of the filter prepared in Examples 20 and 21 and Comparative Example 20 the results in Examples 20 and 21 Desorption of the nanofiber nonwoven fabric did not occur in the filter produced by the filter, but desorption of the nanofiber nonwoven fabric occurred in the filter prepared in Comparative Example 20.
  • polyvinylidene fluoride nanofiber nonwoven fabric is laminated on both sides of the substrate, but in another embodiment, the polyurethane nanofiber nonwoven fabric and polyvinylidene fluoride nanofiber are laminated on both sides of the substrate. It is also possible.
  • the filter of the present embodiment is manufactured by the manufacturing method as described above, in the first unit (10a) and the third unit (10c) of the electrospinning device (1 ') is a polyurethane spinning solution in which polyurethane is dissolved in a solvent Polysulfide fluoride spinning solution in which polyvinylidene fluoride was dissolved in a solvent was electrospun in a polyvinylidene nanofiber nonwoven fabric by laminating a polyvinylidene fluoride in the second unit (10b) and a fourth unit (10d). Liden fluoride nanofiber nonwovens are laminated.
  • the first polyurethane nanofiber nonwoven fabric is laminated on one side of the substrate, and in the second unit 10b, the first polyvinylidene fluoride ( PVDF) nanofiber nonwoven fabrics are laminated.
  • the laminated fabric is rotated 180 degrees up and down through the flip device 110.
  • the second polyurethane nanofiber nonwoven fabric is laminated on the other side of the substrate on which the nanofiber nonwoven fabric is not laminated, and in the fourth unit 10d, the second polyurethane nanofiber nonwoven fabric is formed on the second polyurethane nanofiber nonwoven fabric.
  • 2 polyvinylidene fluoride nanofiber nonwoven fabric is laminated.
  • Polyurethane solution prepared by reacting dicyclohexylmethane 4,4-diisocyanate with polyol was dissolved in dimethylformamide, and the polyurethane solution was supplied to the spinning solution main tanks of the first and third units of the electrospinning apparatus.
  • the polyurethane solution was electrospun on one side of the polyethylene terephthalate substrate to laminate a first polyurethane nanofiber nonwoven fabric having a thickness of 2 ⁇ m.
  • the polyvinylidene fluoride solution was electrospun on the first polyurethane nanofiber nonwoven fabric to laminate a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 ⁇ m.
  • the flip unit located at the rear end of the second unit rotates the top and bottom of the fabric consisting of the polyethylene terephthalate substrate, the first polyurethane nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric by 180 ° was fed the fabric.
  • a second polyurethane nanofiber nonwoven fabric having a thickness of 2 ⁇ m is formed by electrospinning the polyurethane solution on the other side of the polyethylene terephthalate substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated. Lamination was performed.
  • the polyvinylidene fluoride solution was electrospun on the second polyurethane nanofiber nonwoven fabric to laminate a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 ⁇ m.
  • the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter.
  • electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.
  • Polyurethane solution prepared by reacting dicyclohexylmethane 4,4-diisocyanate with polyol was dissolved in dimethylformamide, and the polyurethane solution was supplied to the spinning solution main tanks of the first and third units of the electrospinning apparatus.
  • the first unit of the electrospinning apparatus an applied voltage was applied to 15 kV, and the polyurethane solution was electrospun on one side of the polyethylene terephthalate substrate to laminate a first polyurethane nanofiber nonwoven fabric having a thickness of 2 ⁇ m and a fiber diameter of 250 nm. .
  • a first polyvinylidene fluoride having an applied voltage of 20 kV and electrospinning the polyvinylidene fluoride solution on the first polyurethane nanofiber nonwoven fabric having a thickness of 2 ⁇ m and a fiber diameter of 130 nm Ride nanofiber nonwovens were laminated.
  • the flip device located at the rear end of the second unit rotates the top and bottom of the fabric consisting of the polyethylene terephthalate substrate, the first polyurethane nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric by 180 °, and the third The fabric was fed to the unit.
  • an applied voltage of 15 kV is applied and the polyurethane solution is electrospun on the other side of the polyethylene terephthalate substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated.
  • a second polyurethane nanofiber nonwoven fabric having a diameter of 250 nm was laminated.
  • the second polyvinylidene having a thickness of 2 ⁇ m and a fiber diameter of 130 nm is applied by applying an applied voltage of 20 kV and electrospinning the polyvinylidene fluoride solution on the second polyurethane nanofiber nonwoven fabric. Fluoride nanofiber nonwoven fabrics were laminated. After electrospinning, the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 °C, humidity 20%.
  • the cellulose substrate used in Example 22 was used as the filter media.
  • a polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.
  • the filtration efficiency of Examples 22 and 23 and Comparative Example 21 was measured by the filtration efficiency measurement method and shown in Table 21.
  • the pressure drop and filter life of the filters prepared in Examples 22 and 23 and Comparative Example 21 were measured and shown in Table 22.
  • the filters manufactured through Examples 22 and 23 have a lower pressure drop than Comparative Example 21, resulting in less pressure loss and longer filter life, resulting in superior durability.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The present invention relates to a method for manufacturing a filter comprising a nano-fiber on both surfaces of a substrate thereof, and the purpose of the present invention is to provide a filter manufactured by stacking one layer or two or more layers of nano-fiber nonwovens on each surface of the substrate, and a method for manufacturing the same. A process of manufacturing the filter according to the present invention comprises a process of rotating a textile by 180 degrees and turning over the textile in order to stack the nano-fiber nonwovens on both surfaces of the substrate, thereby simplifying the manufacturing process, and a concept of a unit is introduced to an electrospinning device, thereby manufacturing a filter which can be mass-produced.

Description

기재 양면에 나노섬유를 포함하는 필터 및 이의 제조방법Filter including nanofibers on both sides of the substrate and its manufacturing method

본 발명은 기재 양면에 나노섬유를 포함하는 필터 및 이의 제조방법에 관한 것으로, 기재의 양면에 고분자 방사용액을 전기방사하여 제조한 기재 양면에 나노섬유 부직포를 포함하는 필터 및 이의 제조방법에 관한 것이다.The present invention relates to a filter including nanofibers on both sides of a substrate and a method for manufacturing the same, and to a filter including nanofiber nonwoven fabric on both sides of a substrate prepared by electrospinning a polymer spinning solution on both sides of the substrate and a method of manufacturing the same. .

일반적으로 필터는 유체 속의 이물질을 걸러내는 여과장치로서 액체필터와 에어필터로 분류된다. 이 중 에어필터는 첨단산업의 발달과 함께 첨단제품의 불량방지를 위해 공기 중의 먼지 등 미립자, 세균이나 곰팡이 등의 생물입자, 박테리아 등과 같은 생물학적으로 유해한 것이 제거되는 반도체 제조, 전산기기 조립, 병원, 식품가공공장, 농림수산 분야에서 사용되며, 먼지가 많이 발생하는 작업장이나 화력발전소 등에도 광범위하게 사용된다. 화력발전소에서 사용하는 가스터빈은 외부로부터 정화된 공기를 흡입하여 압축한 뒤, 압축된 공기를 연료와 함께 연소기 내로 분사하여 혼합하고, 혼합된 공기와 연료를 연소시켜, 고온, 고압의 연소가스를 얻은 다음, 터빈의 베인에 분사하여 회전력을 얻는 회전식 내연기관의 일종이다. 이러한 가스터빈은 매우 정밀한 부품으로 구성되어 있기 때문에 주기적인 정비를 실시하며, 이 때 압축기로 유입되는 대기 중의 공기를 정화하기 위한 전처리용으로 에어필터를 사용한다.Generally, a filter is a filtration device that filters foreign substances in a fluid and is classified into a liquid filter and an air filter. Among these, air filters are used in semiconductor manufacturing, computer equipment assembly, hospitals, etc. to remove biologically harmful substances such as microparticles such as dust in the air, bioparticles such as bacteria and molds, and bacteria to prevent defects of high-tech products with the development of high-tech industries. It is used in food processing factories, agriculture, forestry and fisheries, and is widely used in dusty workplaces and thermal power plants. The gas turbine used in the thermal power plant sucks and purifies the purified air from the outside, and then mixes the compressed air with the fuel by injecting it into the combustor and burns the mixed air and the fuel to burn the combustion gas of high temperature and high pressure. It is a kind of rotary internal combustion engine which obtains a rotational force by spraying on the vane of a turbine after obtaining. Since the gas turbine is composed of very precise parts, periodic maintenance is performed, and at this time, an air filter is used for pretreatment to purify the air in the compressor.

에어필터는 가스터빈으로 흡입되는 연소용 공기를 대기 중에서 취할 때, 대기 중에 포함된 먼지, 분진 등의 이물질이 필터 여재 내로 침투하지 못하게 하여 정화된 공기를 공급할 수 있다. 그러나, 이물질의 크기가 큰 입자는 필터 여재 표면에 쌓이게 되어 필터 여재 표면에 필터 케이크(Filter Cake)를 형성할 뿐만 아니라, 미세한 입자는 필터 여재 내에 쌓이게 되어 필터 여재의 기공을 막는다. 결국, 입자들이 필터 여재의 표면에 쌓이게 되면 필터의 압력손실을 높이고, 수명을 저하시키는 문제가 있었다. When the air filter takes the combustion air sucked into the gas turbine in the air, it is possible to supply purified air by preventing foreign substances such as dust and dust contained in the air from penetrating into the filter medium. However, large particles of foreign matter accumulate on the surface of the filter medium and form a filter cake on the surface of the filter medium, and fine particles accumulate in the filter medium to block pores of the filter medium. As a result, when the particles accumulate on the surface of the filter medium, there is a problem of increasing the pressure loss of the filter and reducing the life.

한편, 기존의 에어필터는 필터 여재를 구성하는 섬유집합체에 정전기를 부여하여 입자가 정전기력에 의해 포집되는 원리를 이용하였으며, 상기 원리에 의한 필터의 효율을 측정해왔다. 그러나, 최근 유럽의 에어필터 분류 표준인 EN779는 2012년 정전기 효과에 의한 필터의 효율을 배제하기로 결정하였으며, 정전기 효과를 배제하고 효율을 측정한 결과, 필터의 실제 효율은 20%이상 저하되는 것이 밝혀졌다.  On the other hand, the conventional air filter used the principle that the particles are collected by the electrostatic force by applying the static electricity to the fiber assembly constituting the filter medium, and has measured the efficiency of the filter according to the principle. However, recently, EN779, the European air filter classification standard, decided to exclude the efficiency of the filter by the electrostatic effect in 2012. As a result of excluding the electrostatic effect and measuring the efficiency, the actual efficiency of the filter is reduced by more than 20%. Turned out.

상기한 문제점을 해결하기 위하여 나노사이즈의 섬유를 제조하여 필터에 적용하는 다양한 방식들이 개발 및 사용되고 있다. 나노섬유를 필터에 구현할 경우, 직경이 큰 기존의 필터 여재에 비해서 비표적이 매우 크고, 표면 작용기에 대한 유연성도 좋으며, 나노급 기공사이즈를 가지므로 미세한 먼지입자를 효율적으로 여과할 수 있게 되었다. 나노사이즈의 섬유를 이용한 필터 구현은 그 생산비용이 증대되는 문제점이 발생하며, 생산을 위한 여러 가지 조건 등을 조절하기가 쉽지 않으며, 대량 생산에 어려움이 있으므로, 나노사이즈의 섬유를 이용한 필터를 상대적으로 낮은 단가에 생산보급하지 못하는 문제가 발생했다. 또한, 종래의 나노섬유를 방사하는 기술로는 실험실 위주의 소규모 작업 라인으로 한정되어 있어, 방사구획을 유닛 개념으로 도입한 경우가 없었다. In order to solve the above problems, various methods of manufacturing nano-sized fibers and applying them to filters have been developed and used. When the nanofiber is implemented in the filter, the specific target is much larger than the existing filter media having a large diameter, the flexibility of the surface functional group is excellent, and the nano-scale pore size enables the efficient filtering of fine dust particles. The implementation of the filter using nano-sized fibers causes a problem that the production cost increases, and it is not easy to control various conditions for the production, and it is difficult to mass-produce them. As a result, there was a problem that production supply could not be supplied at a low price. In addition, the technology for spinning a conventional nanofiber is limited to a small laboratory-oriented work line, and no spin compartment has been introduced as a unit concept.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 고분자 방사용액을 전기방사하여 기재의 양면에 각각 나노섬유 부직포를 적층형성하여 제조된 필터 및 이의 제조방법을 제공하는 것을 목적으로 한다. The present invention is to solve the above problems, an object of the present invention is to provide a filter and a method of manufacturing the same by electrospinning the polymer spinning solution to form a nanofiber nonwoven fabric laminated on each side of the substrate.

상기와 같이 기재의 양면에 나노섬유 부직포를 적층형성하는 과정에서 직물의 상, 하를 180° 회전하는 공정이 포함되어 있어 제조 공정의 간소화가 가능하고, 전기방사장치에 유닛 개념을 도입하여 대량생산이 가능한 필터를 제조하는 것을 목적으로 한다.As described above, the process of laminating the nanofiber nonwoven fabric on both sides of the substrate includes a process of rotating the top and bottom of the fabric by 180 °, thereby simplifying the manufacturing process, and introducing the unit concept to the electrospinning apparatus, thereby mass production. It aims at manufacturing this possible filter.

본 발명의 적절한 실시 형태에 따르면 셀룰로오스 기재, 상기 셀룰로오스 기재의 상부면에 전기방사에 의해 적층형성되는 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 상기 셀룰로오스 기재의 하부면에 전기방사에 의해 적층형성되는 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포;를 포함하고, 상기 셀룰로오스 기재와 상기 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 열융착되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to a preferred embodiment of the present invention, a cellulose substrate, a first polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning on an upper surface of the cellulose substrate, and an electrospinning on a lower surface of the cellulose substrate are formed. And a second polyvinylidene fluoride nanofiber nonwoven fabric; wherein the cellulose substrate and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics are thermally fused. To provide.

본 발명의 다른 적절한 실시 형태에 따르면 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액으로 제조되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, the first and second polyvinylidene fluoride nanofiber nonwoven fabrics are made of a solution in which polyvinylidene fluoride and hot melt are mixed. To provide.

본 발명의 또 다른 적절한 실시 형태에 따르면 셀룰로오스 기재와 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 사이, 그리고 상기 셀룰로오스 기재와 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포 사이에 각각 핫멜트 전기방사층이 포함되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다. 여기서 핫멜트는 폴리비닐리덴 플루오라이드계인 것을 특징으로 한다.According to another suitable embodiment of the present invention, a hot melt electrospinning layer is provided between a cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric, and between the cellulose substrate and the second polyvinylidene fluoride nanofiber nonwoven fabric, respectively. It provides a filter comprising nanofibers on both sides of the substrate, characterized in that included. The hot melt is characterized in that the polyvinylidene fluoride system.

본 발명의 다른 적절한 실시 형태에 따르면 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 150 내지 300nm이고, 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 100 내지 150nm인 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, the first polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 150 to 300 nm, and the second polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 100 to 150 nm. To provide a filter comprising nanofibers on both sides of the substrate.

여기서 셀룰로오스 기재는 셀룰로오스 및 폴리에틸렌 테레프탈레이트를 포함하는 것을 특징으로 하고, 일 실시예의 셀룰로오스 기재는 상기 셀룰로오스의 구성비가 70 내지 90 질량%이며, 상기 폴리에틸렌 테레프탈레이트의 구성비가 10 내지 30 질량%인 것을 특징으로 하며, 다른 일 실시예의 셀룰로오스 기재는 방염 코팅된 것을 특징으로 한다.Wherein the cellulose substrate is characterized in that it comprises cellulose and polyethylene terephthalate, the cellulose substrate of one embodiment is characterized in that the composition ratio of the cellulose is 70 to 90 mass%, the composition ratio of the polyethylene terephthalate is 10 to 30 mass% To another, the cellulose substrate of another embodiment is characterized in that the flame-retardant coating.

본 발명의 또 다른 적절한 실시 형태에 따르면 폴리에틸렌 테레프탈레이트 기재, 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 방사용액을 전기방사하여 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 상기 폴리에틸렌 테레프탈레이트 기재에서 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않은 타측면에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 방사용액을 전기방사하여 적층형성된 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하고 상기 폴리에틸렌 테레프탈레이트 기재 및 상기 폴리에틸렌 테레프탈레이트 기재 양면에 적층형성된 상기 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, a polyethylene terephthalate substrate and a spinning solution in which a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride are mixed on one side of the polyethylene terephthalate substrate are laminated and formed. On the other side of the first polyvinylidene fluoride nanofiber nonwoven fabric and the polyethylene terephthalate substrate not bonded to the first polyvinylidene fluoride nanofiber nonwoven fabric, high melting point polyvinylidene fluoride and low melting point polyvinylidene fluoride The first and second polyvinylidene fluoros including a second polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning the mixed spinning solution and laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate. To provide a filter to the substrate on both sides, characterized in that to load the welded a nanofiber nonwoven fabric including nanofibers.

본 발명의 다른 적절한 실시 형태에 따르면 이성분 기재, 상기 이성분 기재의 상부면에 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액을 전기방사하여 적층형성되는 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포 및 상기 이성분 기재의 하부면에 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액을 전기방사하여 적층형성되는 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 포함하고, 상기 이성분 기재 및 상기 제1 및 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, the first polyvinylidene fluoride-hotmelt nanofibers formed by laminating by electrospinning a bicomponent substrate and a solution of polyvinylidene fluoride and hot melt on the upper surface of the bicomponent substrate A nonwoven fabric and a second polyvinylidene fluoride-hotmelt nanofiber nonwoven fabric formed by electrospinning a solution containing a mixture of polyvinylidene fluoride and a hot melt on a lower surface of the bicomponent substrate, wherein the bicomponent substrate and the The present invention provides a filter including nanofibers on both surfaces of a substrate, wherein the first and second polyvinylidene fluoride-hot melt nanofiber nonwoven fabrics are heat-sealed.

본 발명의 또 다른 적절한 실시 형태에 따르면 폴리에틸렌 테레프탈레이트 기재, 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 적층된 제1 이성분 기재, 상기 제1 이성분 기재 상에 전기방사에 의해 적층형성되는 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 이성분 기재와 접합하지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 적층된 제2 이성분 기재 및 상기 제2 이성분 기재 상에 전기방사에 의해 적층형성되는 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하고 상기 폴리에틸렌 테레프탈레이트 기재, 상기 제1 및 2 이성분 기재 및 상기 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, a polyethylene terephthalate substrate, a first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate, and a first poly laminated on the first bicomponent substrate by electrospinning The vinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning on the second bicomponent substrate and the second bicomponent substrate laminated on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate. A substrate comprising a second polyvinylidene fluoride nanofiber nonwoven fabric and heat-sealing the polyethylene terephthalate substrate, the first and second bicomponent substrates, and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics. Provided is a filter comprising nanofibers on both sides.

본 발명의 다른 적절한 실시 형태에 따르면 폴리에틸렌 테레프탈레이트 기재, 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 적층된 제1 이성분 기재, 상기 제1 이성분 기재 상에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 용액을 전기방사하여 적층형성된 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 이성분 기재와 접합하지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 적층된 제2 이성분 기재, 상기 제2 이성분 기재 상에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 용액을 전기방사하여 적층형성된 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하고 상기 폴리에틸렌 테레프탈레이트 기재, 상기 제1 및 2 이성분 기재 및 상기 제1 및 2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포는 열융착되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, a polyethylene terephthalate substrate, a first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate, a high melting point polyvinylidene fluoride and a low melting poly on the first bicomponent substrate A first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric formed by electrospinning a solution containing a vinylidene fluoride layered on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate Second high melting point and low melting point polyvinylidene formed by electrospinning a mixed solution of a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride on the second bicomponent substrate and the second bicomponent substrate A fluoride nanofiber nonwoven fabric comprising the polyethylene terephthalate substrate, First and second two-component provides a substrate and a filter that includes the first and second high melting point and low melting point in the nanofiber polyvinylidene fluoride nano-fiber non-woven fabric substrate is characterized in that the heat-sealing on both sides.

본 발명의 또 다른 적절한 실시 형태에 따르면 폴리에틸렌 테레프탈레이트 기재, 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 적층된 제1 이성분 기재, 상기 제1 이성분 기재 상에 전기방사에 의해 적층형성되는 제1 나일론 나노섬유 부직포, 상기 제1 이성분 기재와 접합하지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 적층된 제2 이성분 기재 및 상기 제2 이성분 기재 상에 전기방사에 의해 적층형성되는 제2 나일론 나노섬유 부직포를 포함하고 상기 폴리에틸렌 테레프탈레이트 기재, 상기 제1 및 2 이성분 기재 및 상기 제1 및 2 나일론 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다. According to another suitable embodiment of the present invention, a polyethylene terephthalate substrate, a first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate, and a first nylon laminated by electrospinning on the first bicomponent substrate Nanofiber nonwoven fabric, second bicomponent substrate laminated on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate and second nylon nano laminated by electrospinning on the second bicomponent substrate Provided is a filter comprising a nanofiber on both sides of the substrate comprising a fiber nonwoven fabric and heat-sealing the polyethylene terephthalate substrate, the first and second bicomponent substrates, and the first and second nylon nanofiber nonwoven fabrics.

본 발명의 다른 적절한 실시 형태에 따르면 기재, 상기 기재의 일측면에 폴리비닐리덴 플루오라이드와 폴리우레탄을 용매에 용해시킨 용액을 전기방사하여 적층형성된 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포 및 상기 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포가 적층되지 않은 상기 기재의 다른 타측면에 폴리비닐리덴 플루오라이드와 폴리우레탄을 혼합한 용액을 전기방사하여 적층형성된 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 포함하고, 상기 기재 및 상기 기재의 양면에 적층형성되는 제1 및 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, the first polyurethane and polyvinylidene fluoride mixed nanofibers laminated by electrospinning a substrate, a solution in which polyvinylidene fluoride and polyurethane are dissolved in a solvent on one side of the substrate Non-woven fabric and the second polyurethane laminated by electrospinning a solution of polyvinylidene fluoride and polyurethane on the other side of the substrate on which the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric is not laminated And a polyvinylidene fluoride mixed nanofiber nonwoven fabric, wherein the first and second polyurethanes and the polyvinylidene fluoride mixed nanofiber nonwoven fabric laminated on both the substrate and the substrate are heat-sealed. Provided is a filter comprising nanofibers on both sides of a substrate.

본 발명의 또 다른 적절한 실시 형태에 따르면 기재, 상기 기재의 일측면에 전기방사에 의해 적층형성되고 섬유직경이 150 내지 200nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않는 상기 기재의 타측면에 전기방사에 의해 적층형성되고 섬유직경이 150 내지 200nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 상기 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하고 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, a base material, a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm laminated by electrospinning on one side of the base material, the first polyvinylidene fluorine A second polyvinylidene fluoride nanofiber nonwoven fabric which is laminated by electrospinning on a lide nanofiber nonwoven fabric and has a fiber diameter of 100 to 150 nm, and the other of the above substrates that is not bonded to the first polyvinylidene fluoride nanofiber nonwoven fabric Laminated by electrospinning on the side and laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm and the third polyvinylidene fluoride nanofiber nonwoven fabric and having a fiber diameter Including and heat-sealing a fourth polyvinylidene fluoride nanofiber nonwoven fabric of 100 to 150 nm It provides a filter comprising nanofibers on both sides of the substrate.

본 발명의 다른 적절한 실시 형태에 따르면 기재, 상기 기재의 일측면에 전기방사에 의해 적층형성되는 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되는 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유가 적층형성되지 않은 상기 기재의 타측면에 전기방사에 의해 적층형성되는 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 상기 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되는 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포;를 포함하고, 상기 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 기재, 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서대로 적층형성된 직물은 열융착되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, a substrate, a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning on one side of the substrate, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric A first high melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning onto the substrate, and the first low melting point polyvinylidene fluoride nanofiber is laminated by electrospinning on the other side of the substrate where the layering is not formed. A second high melting point polyvinylidene fluoride nanofiber nonwoven fabric formed and a second high melting point polyvinylidene fluoride nanofiber nonwoven fabric formed by electrospinning on the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric; Including, the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, first low melting The fabric laminated in the order of the polyvinylidene fluoride nanofiber nonwoven fabric, the substrate, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the second high melting point polyvinylidene fluoride nanofibre nonwoven fabric is characterized in that it is heat-sealed. Provided is a filter comprising nanofibers on both sides of a substrate.

본 발명의 또 다른 적절한 실시 형태에 따르면 기재, 상기 기재의 일측면에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제1 나일론 나노섬유 부직포, 상기 제1 나일론 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 80 내지 150nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 나일론 나노섬유 부직포와 접합하지 않는 상기 기재의 타측면에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제2 나일론 나노섬유 부직포, 상기 제2 나일론 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 80 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하고 이를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, a substrate, a first nylon nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm laminated by electrospinning on one side of the substrate, and electrospun onto the first nylon nanofiber nonwoven fabric A first polyvinylidene fluoride nanofiber nonwoven fabric laminated with a fiber diameter of 80 to 150 nm, and laminated by electrospinning on the other side of the substrate not bonded to the first nylon nanofiber nonwoven fabric and having a fiber diameter A second nylon nanofiber nonwoven fabric having a thickness of 100 to 150 nm, and a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 80 to 150 nm and laminated by electrospinning on the second nylon nanofiber nonwoven fabric, and heat-sealing the same It provides a filter comprising nanofibers on both sides of the substrate, characterized in that.

본 발명의 다른 적절한 실시 형태에 따르면 기재, 상기 기재의 일측면에 폴리우레탄을 용매에 용해시킨 폴리우레탄 용액을 전기방사하여 적층형성된 제1 폴리우레탄 나노섬유 부직포, 상기 제1 폴리우레탄 나노섬유 부직포 상에 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 전기방사하여 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 폴리우레탄 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 폴리우레탄 용액을 전기방사하여 적층형성된 제2 폴리우레탄 나노섬유 부직포 및 상기 제2 폴리우레탄 나노섬유 부직포 상에 폴리비닐리덴 플루오라이드 용액을 전기방사하여 적층형성된 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하고 적층된 직물을 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터를 제공한다.According to another suitable embodiment of the present invention, the first polyurethane nanofiber nonwoven fabric laminated on the substrate, the first polyurethane nanofiber nonwoven fabric laminated by electrospinning a polyurethane solution in which a polyurethane is dissolved in a solvent on one side of the substrate, A first polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning a polyvinylidene fluoride solution in which polyvinylidene fluoride was dissolved in a solvent, and the other of the substrates on which the first polyurethane nanofiber nonwoven fabric was not laminated. The second polyurethane nanofiber nonwoven fabric laminated by electrospinning a polyurethane solution on the side and the second polyvinylidene fluoride nanofiber laminated by electrospinning a polyvinylidene fluoride solution on the second polyurethane nanofiber nonwoven fabric Heat-sealing nonwoven and laminated fabrics It provides a filter comprising the nanofiber to the substrate on both sides of.

본 발명의 또 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 각 유닛의 방사용액 주탱크에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서 셀룰로오스 기재의 일측면에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 플립장치에서 상기 셀룰로오스 기재 및 이에 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제2 유닛에서 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계 및 상기 셀룰로오스 기재와 상기 셀룰로오스 기재의 양면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착시키는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units In the manufacturing method of manufacturing a filter by an electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, each polyvinylidene fluoride solution which melt | dissolved the polyvinylidene fluoride in the solvent was prepared. Injecting into the spinning solution main tank of the unit, the first polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride solution on one side of the cellulose substrate in the first unit of the electrospinning apparatus In the flip device, the cellulose substrate and the first poly ratio laminated to the Rotating the top and bottom of the fabric consisting of a lithium fluoride nanofiber nonwoven fabric 180 °, the other side of the cellulose substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated in the second unit of the electrospinning apparatus Laminating the second polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the polyvinylidene fluoride solution to the first and second polyvinylidene fluorides laminated on both sides of the cellulose substrate and the cellulose substrate. It provides a method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises the step of heat-sealing the nanofiber nonwoven fabric.

여기서 본 발명의 일 실시예에서 폴리비닐리덴 플루오라이드 용액은 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액인 것을 특징으로 하고, 핫멜트는 폴리비닐리덴 플루오라이드계 핫멜트인 것을 특징으로 한다.Here, in one embodiment of the present invention, the polyvinylidene fluoride solution is characterized in that the polyvinylidene fluoride and a hot melt mixed solution, the hot melt is characterized in that the polyvinylidene fluoride-based hot melt.

또한 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 150 내지 300nm이고, 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 100 내지 150nm인 것을 특징으로 한다.In addition, the first polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 150 to 300nm, the second polyvinylidene fluoride nanofiber nonwoven fabric is characterized in that the fiber diameter of 100 to 150nm.

본 발명의 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 고융점 폴리비닐리덴 플루오라이드와 저융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 방사용액을 각 유닛의 공급장치에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서는 폴리에틸렌 테레프탈레이트 기재 상에 상기 방사용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 플립장치에서 상기 폴리에틸렌 테레프탈레이트 기재와 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 순으로 적층된 직물의 상, 하를 180° 회전하는 단계. 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 상기 방사용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계 및 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 폴리에틸렌 테레프탈레이트 기재, 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units, In the manufacturing method of manufacturing a filter by the electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, the high melting point polyvinylidene fluoride and the low melting point polyvinylidene fluoride are dissolved in a solvent. Injecting the spinning solution into the supply device of each unit, In the first unit of the electrospinning device to form a first polyvinylidene fluoride nanofiber non-woven fabric by electrospinning the spinning solution on a polyethylene terephthalate substrate Step, the polyethylene terephthalate substrate and the first polyvinyl in the flip device Phase, the method comprising: a rotation and 180 ° of Den fluoride laminated fabric with nano-fiber non-woven fabric in order. In the second unit of the electrospinning apparatus, a second polyvinylidene fluoride nanofiber nonwoven fabric is formed by electrospinning the spinning solution on the other side of the polyethylene terephthalate substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. Laminating and heat-sealing the laminated fabric in the order of the first polyvinylidene fluoride nanofiber nonwoven fabric, the polyethylene terephthalate substrate, and the second polyvinylidene fluoride nanofiber nonwoven fabric. It provides a method for producing a filter comprising nanofibers on both sides of the substrate.

본 발명의 또 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 폴리비닐리덴 플루오라이드와 핫멜트를 용매에 용해시킨 방사용액을 각 유닛의 공급장치에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서는 이성분 기재의 일측면에 상기 방사용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 적층형성하는 단계, 상기 플립장치에서 상기 이성분 기재 및 이에 적층형성된 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포가 적층되지 않은 상기 이성분 기재의 타측면에 상기 방사용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 적층형성하는 단계 및 상기 이성분 기재와 이성분 기재의 양면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 열융착시키는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units In the manufacturing method of producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution on a substrate located in the collector of each unit, a spinning solution in which polyvinylidene fluoride and hot melt is dissolved in a solvent In the step of feeding into the supply device, in the first unit of the electrospinning apparatus to electrospin the spinning solution on one side of the two-component substrate to laminate a first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric, the flip The bicomponent substrate and a first polyvinylidene fluoride-hotmelt nanofiber nonwoven fabric laminated thereon in an apparatus Rotating the top and bottom of the fabric consisting of 180 °, the second unit of the electrospinning device in the room on the other side of the two-component substrate is not laminated the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric Electrospinning the use solution to form a second polyvinylidene fluoride-hot melt nanofiber nonwoven fabric and laminating the first and second polyvinylidene fluoride-hot melt nanofibers on both sides of the bicomponent substrate and the bicomponent substrate. It provides a method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises the step of heat-sealing the nonwoven fabric.

본 발명의 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 각 유닛의 공급장치에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재의 순서로 적층되어 있는 기재의 제1 이성분 기재 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 플립장치에서 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 상기 제2 이성분 기재 순서로 적층된 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제2 유닛에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재의 일면에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계 및 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units, In the manufacturing method of manufacturing a filter by the electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, each unit contains the polyvinylidene fluoride solution which melt | dissolved polyvinylidene fluoride in the solvent. In the feeding device of the electrospinning apparatus, wherein the poly on the first bicomponent substrate of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate in the first unit of the electrospinning apparatus Electrospun vinylidene fluoride solution to laminate the first polyvinylidene fluoride nanofiber nonwoven fabric Rotating the top and bottom of the fabric laminated in the order of the first polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent substrate, polyethylene terephthalate substrate, the second bicomponent substrate in the flip device The second polyvinylidene fluoride nanofibers by electrospinning the polyvinylidene fluoride solution on one surface of the second bicomponent substrate not bonded to the polyethylene terephthalate substrate in the second unit of the electrospinning apparatus Laminating a nonwoven fabric and laminating in order of the first polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent substrate, polyethylene terephthalate substrate, the second bicomponent substrate, and the second polyvinylidene fluoride nanofiber nonwoven fabric. Nanofibers on both sides of the substrate, characterized in that it comprises the step of heat-sealing the fabric It provides a method for producing a filter.

본 발명의 또 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 고융점 폴리비닐리덴 플루오라이드와 저융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 방사용액을 각 유닛의 공급장치에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서는 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재의 순서로 적층되어 있는 기재의 제1 이성분 기재 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 제1 유닛 후단부에 위치한 플립장치에서 상기 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 상기 제2 이성분 기재 순서로 적층된 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제2 유닛에서는 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재 상에 상기 방사용액을 전기방사하여 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계 및 상기 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units In the manufacturing method of producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution on a substrate located in the collector of each unit, high melting point polyvinylidene fluoride and low melting point polyvinylidene fluoride in a solvent Injecting the dissolved spinning solution into a supply device of each unit, wherein the first unit of the electrospinning device includes a first bicomponent substrate, a polyethylene terephthalate substrate, and a second bicomponent substrate laminated in this order; First high melting point and low melting point polyvinylidene by electrospinning the polyvinylidene fluoride solution on a bicomponent substrate Stacking fluoride nanofiber nonwoven fabric, the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate in a flip device located at the rear end of the first unit Rotating the top and bottom of the fabric laminated in the order of the second bicomponent substrate 180 °, the second unit of the electrospinning device on the second bicomponent substrate that is not bonded to the polyethylene terephthalate substrate Electrospinning the spinning solution to form a second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric; and the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric, a first bicomponent substrate, Polyethylene terephthalate substrate, second bicomponent substrate, second high melting point and low melting polyvinylidene fluoride nano island Provides a process for the preparation of a filter containing the nanofibers on the substrate on both sides, it characterized in that it comprises the step of heat fusing the fabric laminated in the order of the non-woven fabric.

본 발명의 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 나일론을 용매에 용해시킨 나일론 용액을 각 유닛의 공급장치에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재의 순서로 적층되어 있는 기재의 제1 이성분 기재 상에 상기 나일론 용액을 전기방사하여 제1 나일론 나노섬유 부직포를 적층형성하는 단계, 상기 플립장치에서 상기 제1 나일론 나노섬유 부직포, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 상기 제2 이성분 기재 순서로 적층된 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제2 유닛에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재의 일면에 상기 나일론 용액을 전기방사하여 제2 나일론 나노섬유 부직포를 적층형성하는 단계 및 상기 제1 나일론 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 나일론 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units, A method of manufacturing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution on a substrate positioned in a collector of each unit, the method comprising: introducing a nylon solution in which a nylon is dissolved in a solvent into a feeder of each unit; In the first unit of the electrospinning apparatus, the nylon solution is electrospun on the first bicomponent substrate of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate. Laminating a nanofiber nonwoven fabric, the first nylon nanofiber nonwoven fabric, the first bicomponent substrate in the flip device Rotating the upper and lower portions of the polyethylene terephthalate substrate and the fabric laminated in the order of the second bicomponent substrate by 180 °, and the second isomer not bonded to the polyethylene terephthalate substrate in the second unit of the electrospinning apparatus. Stacking the second nylon nanofiber nonwoven fabric by electrospinning the nylon solution on one surface of the powder substrate; and the first nylon nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate, the second bicomponent substrate, and the second It provides a method for producing a filter including nanofibers on both sides of the substrate, comprising the step of heat-sealing the fabric laminated in the order of 2 nylon nanofiber nonwoven fabric.

본 발명의 또 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 폴리비닐리덴 플루오라이드와 폴리우레탄을 용매에 용해시킨 방사용액을 각 유닛의 방사용액 주탱크에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 방사용액을 전기방사하여 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 적층형성하는 단계, 상기 제1 유닛 후단부에 위치한 플립장치에서는 상기 기재 및 적층된 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포로 이뤄진 직물에서 상기 제1 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면이 상기 노즐블록을 향하도록 직물의 상하를 180° 회전하는 단계, 상기 전기방사장치의 제2 유닛에서는 상기 기재의 타측면에 상기 방사용액을 전기방사하여 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 적층형성하는 단계 및 상기 기재와 상기 기재의 양면에 적층형성된 제1 및 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 열융착시키는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units In the manufacturing method of manufacturing a filter by an electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, each unit contains the spinning solution which melt | dissolved polyvinylidene fluoride and polyurethane in the solvent. Injecting into the spinning solution main tank of the electrospinning apparatus, the first unit of the electrospinning apparatus to electrospun the spinning solution on one side of the substrate to form a laminate of the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric In the flip device located at the rear end of the first unit, the substrate and the laminated first polyurethane and polyvinyl Rotating the top and bottom of the fabric 180 ° such that the other side of the substrate, on which the first nanofiber nonwoven is not laminated, faces the nozzle block in a fabric made of a lidene fluoride mixed nanofiber nonwoven fabric, the second of the electrospinning apparatus In the unit, the step of forming the second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric by electrospinning the spinning solution on the other side of the substrate and the first and second laminated on both sides of the substrate It provides a method for producing a filter comprising a nanofiber on both sides of the substrate comprising the step of heat-sealing the polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric.

본 발명의 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 폴리비닐리덴 플루오라이드를 용매에 용해시킨 방사용액을 각 유닛의 방사용액 주탱크에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 방사용액을 전기방사하여 섬유직경이 150 내지 200nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 방사용액을 전기방사하여 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 플립장치에서 상기 기재, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 뒤집는 단계, 상기 전기방사장치의 제3 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않는 상기 기재의 타측면에 상기 방사용액을 전기방사하여 섬유직경이 150 내지 200nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제4 유닛에서는 상기 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 방사용액을 전기방사하여 섬유직경이 100 내지 150nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계 및 상기 기재, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 적층된 직물을 열융착하는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units, In the manufacturing method of manufacturing a filter by the electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, the spinning solution which melt | dissolved polyvinylidene fluoride in the solvent was carried out Injecting into the tank, in the first unit of the electrospinning apparatus, electrospinning the spinning solution on one side of the substrate to laminate a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm; In the second unit of the electrospinning apparatus, the spinning on the first polyvinylidene fluoride nanofiber nonwoven fabric Electrospinning the solution to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm, the substrate, the first polyvinylidene fluoride nanofiber nonwoven fabric and the second polyvinyl in the flip device. Inverting the top and bottom of the fabric made of a lithium fluoride nanofiber nonwoven fabric by 180 °, the third unit of the electrospinning apparatus on the other side of the substrate not bonded to the first polyvinylidene fluoride nanofiber nonwoven fabric Electrospinning the spinning solution to form a third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm, and in the fourth unit of the electrospinning apparatus, on the third polyvinylidene fluoride nanofiber nonwoven fabric Fourth polyvinylidene fluoride having a fiber diameter of 100 to 150 nm by electrospinning the spinning solution Laminating the no-fiber nonwoven fabric and the substrate, the first polyvinylidene fluoride nanofiber nonwoven fabric, the second polyvinylidene fluoride nanofiber nonwoven fabric, the third polyvinylidene fluoride nanofiber nonwoven fabric and the fourth polyvinylidene It provides a method for producing a filter comprising a nanofiber on both sides of the substrate comprising the step of heat-sealing the laminated fabric comprising a fluoride nanofiber nonwoven fabric.

본 발명의 또 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 저융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 저융점 폴리비닐리덴 플루오라이드 용액을 제조하고 상기 전기방사장치의 제1 및 제3 유닛에 공급하고, 고융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 고융점 폴리비닐리덴 플루오라이드 용액을 제조하고 상기 전기방사장치의 제2 및 제4 유닛에 공급하는 단계, 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제2 유닛에서는 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 플립장치에서 상기 기재, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서대로 적층된 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제3 유닛에서는 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되지 않은 상기 기재의 타측면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제4 유닛에서는 상기 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계 및 상기 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 기재, 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서대로 적층된 직물을 열융착하는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units In the manufacturing method of manufacturing a filter by an electrospinning apparatus which electrospins a polymer spinning solution on the base material located in the collector of each unit, the low melting point polyvinylidene fluoride which melt | dissolved the low melting point polyvinylidene fluoride in the solvent. Preparing a high-density polyvinylidene fluoride solution in which a lide solution is prepared and supplied to the first and third units of the electrospinning apparatus, and the high melting point polyvinylidene fluoride is dissolved in a solvent; And supplying to the fourth unit, the low melting point poly on one side of the substrate in the first unit of the electrospinning apparatus. Electrospinning a vinylidene fluoride solution to laminate a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, wherein in the second unit of the electrospinning apparatus, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric Stacking a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the high melting point polyvinylidene fluoride solution on the substrate; the substrate, the first low melting point polyvinylidene fluoride nanofiber in the flip device Non-woven fabric and the first high melting point polyvinylidene fluoride nanofiber non-woven fabric, the step of rotating the top and bottom of the laminated fabric 180 °, the third unit of the electrospinning apparatus in the first low melting point polyvinylidene fluoride The low melting point polyvinylidene fluoride on the other side of the substrate on which the nanofiber nonwoven fabric is not laminated. Electrospinning a fluoride solution to form a second low melting polyvinylidene fluoride nanofiber nonwoven fabric; wherein, in the fourth unit of the electrospinning apparatus, the second low melting polyvinylidene fluoride nanofiber nonwoven fabric is Electrospinning a high melting point polyvinylidene fluoride solution to laminate the second high melting point polyvinylidene fluoride nanofiber nonwoven fabric; and the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric and the first low melting point polyvinyl chloride. Thermally bonding the laminated fabrics in the order of the lidene fluoride nanofiber nonwoven fabric, the substrate, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the second high melting point polyvinylidene fluoride nanofibre nonwoven fabric. It provides a method for producing a filter containing nanofibers on both sides of the substrate.

본 발명의 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 나일론을 용매에 용해시켜 나일론 용액을 제조하고 상기 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 투입하는 단계, 폴리비닐리덴 플루오라이드를 용매에 용해시켜 폴리비닐리덴 플루오라이드 용액을 제조하고 상기 전기방사장치의 제2 및 제4 유닛의 방사용액 주탱크에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 나일론 용액을 전기방사하여 섬유직경이 100 내지 150nm인 제1 나일론 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제2 유닛에서는 상기 제1 나일론 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 섬유직경이 80 내지 150nm인 제1 폴리비닐리덴 플루오라이드 나노섬유를 적층형성하는 단계, 상기 플립장치에서 상기 기재, 제1 나일론 나노섬유 부직포, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제3 유닛에서는 상기 제1 나일론 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 상기 나일론 용액을 전기방사하여 섬유직경이 100 내지 150nm인 제2 나일론 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제4 유닛에서는 상기 제2 나일론 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 섬유직경이 80 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유를 적층형성하는 단계 및 상기 기재, 제1 나일론 나노섬유 부직포, 제2 나일론 나노섬유 부직포, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 적층된 직물을 열융착하는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units, A manufacturing method of manufacturing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution on a substrate positioned in a collector of each unit, wherein the nylon is dissolved in a solvent to prepare a nylon solution. Injecting into the spinning solution main tank of the third unit, the polyvinylidene fluoride is dissolved in a solvent to prepare a polyvinylidene fluoride solution and added to the spinning solution main tank of the second and fourth units of the electrospinning apparatus In the step, the first unit of the electrospinning apparatus by electrospinning the nylon solution on one side of the substrate to have a fiber diameter of 10 Laminating a first nylon nanofiber nonwoven fabric having a thickness of 0 to 150 nm, and in the second unit of the electrospinning apparatus, the polyvinylidene fluoride solution is electrospun onto the first nylon nanofiber nonwoven fabric to have a fiber diameter of 80 to 150 nm. Laminating a first polyvinylidene fluoride nanofiber of 150 nm, and the upper and lower sides of the fabric consisting of the substrate, the first nylon nanofiber nonwoven fabric, and the first polyvinylidene fluoride nanofibre nonwoven fabric in the flip device. ° rotating, in the third unit of the electrospinning apparatus the second nylon nanofibers having a fiber diameter of 100 to 150nm by electrospinning the nylon solution on the other side of the substrate on which the first nylon nanofiber nonwoven fabric is not laminated Stacking a nonwoven fabric, and in the fourth unit of the electrospinning apparatus, the second nylon nanofiber nonwoven fabric Electrospinning the vinylidene fluoride solution to form a second polyvinylidene fluoride nanofiber having a fiber diameter of 80 to 150 nm and laminating the substrate, the first nylon nanofiber nonwoven fabric, the second nylon nanofiber nonwoven fabric, and 1. A method of manufacturing a filter comprising nanofibers on both sides of a substrate, comprising thermally bonding a laminated fabric comprising a polyvinylidene fluoride nanofiber nonwoven fabric and a second polyvinylidene fluoride nanofiber nonwoven fabric To provide.

본 발명의 또 다른 적절한 실시 형태에 따르면 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, 폴리우레탄을 용매에 용해시킨 폴리우레탄 용액을 상기 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 투입하고, 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 상기 전기방사장치의 제2 및 제4 유닛의 방사용액 주탱크에 투입하는 단계, 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 폴리우레탄 용액을 전기방사하여 제1 폴리우레탄 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제2 유닛 후단부에 위치한 플립장치에서 상기 기재, 제1 폴리우레탄 나노섬유 부직포, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물의 상, 하를 180° 회전하는 단계, 상기 전기방사장치의 제3 유닛에서는 상기 제1 폴리우레탄 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 상기 폴리우레탄 용액을 전기방사하여 제2 폴리우레탄 나노섬유 부직포를 적층형성하는 단계, 상기 전기방사장치의 제4 유닛에서는 상기 제2 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계 및 상기 기재와 상기 기재의 양면에 적층형성된 상기 제1 및 제2 폴리우레탄 나노섬유 부직포 및 상기 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착시키는 단계를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법을 제공한다.According to another suitable embodiment of the present invention, consisting of two or more units, the spinning solution main tank is independently connected to the nozzle of the nozzle block located in the unit, and provided with a flip device for rotating the fabric between the units In the manufacturing method of producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution on a substrate located in the collector of each unit, the first solution of the electrospinning apparatus is a polyurethane solution in which a polyurethane is dissolved in a solvent And injecting a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in a solvent into a spinning solution main tank of a third unit, into a spinning solution main tank of the second and fourth units of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the first polyurethane nano by electrospinning the polyurethane solution on one side of the substrate Laminating a nonwoven fabric, and in the second unit of the electrospinning apparatus, a first polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride solution on the first polyurethane nanofiber nonwoven fabric Forming step, the top, bottom of the fabric laminated in the order of the substrate, the first polyurethane nanofiber nonwoven fabric, the first polyvinylidene fluoride nanofiber nonwoven fabric in a flip device located at the rear end of the second unit of the electrospinning apparatus Rotating the 180 °, in the third unit of the electrospinning apparatus to the second polyurethane nanofiber nonwoven fabric by electrospinning the polyurethane solution on the other side of the substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated Forming a laminate, in the fourth unit of the electrospinning apparatus on the second polyurethane nanofiber nonwoven fabric Electrospinning a lithium vinylidene fluoride solution to laminate a second polyvinylidene fluoride nanofiber nonwoven fabric; and the first and second polyurethane nanofiber nonwoven fabrics laminated on both sides of the substrate and the substrate, and the agent. It provides a method for producing a filter comprising nanofibers on both sides of the substrate comprising the step of heat-sealing the first and second polyvinylidene fluoride nanofiber nonwoven fabric.

본 발명에 따라 제조된 필터는 기재의 양면에 나노섬유 부직포를 구비함으로, 종래의 필터보다 높은 여과효율 및 낮은 압력강하를 갖는다.The filter manufactured according to the present invention has a nanofiber nonwoven fabric on both sides of the substrate, and thus has a higher filtration efficiency and a lower pressure drop than a conventional filter.

또한, 전기방사장치는 직물의 상,하를 180° 회전시키는 플립장치를 구비하여 기재 양면에 전기방사하는 공정을 간소화하는 것이 가능하다.In addition, the electrospinning device is provided with a flip device for rotating the top and bottom of the fabric 180 °, it is possible to simplify the process of electrospinning on both sides of the substrate.

그리고, 전기방사장치는 적어도 2개 이상의 유닛으로 구성됨에 따라 연속적인 전기방사가 가능하여 필터의 대량생산이 가능한 이점이 있다는 등의 효과가 있다.And, since the electrospinning device is composed of at least two or more units, there is an advantage that the continuous electrospinning is possible, so that mass production of the filter is possible.

도 1은 본 발명에 의한 전기방사장치를 개략적으로 나타내는 측면도,1 is a side view schematically showing an electrospinning device according to the present invention;

도 2는 본 발명에 의한 전기방사장치의 각 유닛 내에 설치되는 노즐블록을 개략적으로 나타내는 평면도,2 is a plan view schematically showing a nozzle block installed in each unit of the electrospinning apparatus according to the present invention;

도 3은 본 발명에 의한 전기방사장치의 보조 이송장치를 개략적으로 나타내는 도면,3 is a view schematically showing an auxiliary transport apparatus of an electrospinning apparatus according to the present invention;

도 4는 본 발명에 의한 전기방사장치의 보조 이송장치의 보조벨트 롤러의 다른 실시예를 개략적으로 나타내는 도면,4 is a view schematically showing another embodiment of the auxiliary belt roller of the auxiliary transport device of the electrospinning apparatus according to the present invention,

도 5 내지 도 8은 본 발명에 의한 전기방사장치의 장척시트 이송속도 조절장치의 동작과정을 개략적으로 나타내는 측면도, 5 to 8 is a side view schematically showing an operation process of the long sheet feed rate adjusting apparatus of the electrospinning apparatus according to the present invention;

도 9는 본 발명에 의한 셀룰로오스 기재 양면에 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도,9 is a schematic diagram schematically showing a filter including a polyvinylidene fluoride nanofiber nonwoven fabric on both surfaces of a cellulose substrate according to the present invention;

도 10은 본 발명에 의한 폴리에틸렌 테레프탈레이트 기재 양면에 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도,10 is a schematic diagram schematically showing a filter including a polyvinylidene fluoride nanofiber nonwoven fabric on both sides of a polyethylene terephthalate substrate according to the present invention;

도 11은 본 발명의 이성분 기재의 양면에 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도, 11 is a schematic view schematically showing a filter including a polyvinylidene fluoride-hot melt nanofiber nonwoven fabric on both sides of a bicomponent substrate of the present invention;

도 12는 본 발명의 폴리비닐리덴 플루오라이드 나노섬유 부직포와 이성분 기재를 포함하는 필터를 개략적으로 나타내는 모식도,12 is a schematic diagram schematically showing a filter comprising a polyvinylidene fluoride nanofiber nonwoven fabric of the present invention and a two-component base material,

도 13은 본 발명의 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포와 이성분 기재를 포함하는 필터를 개략적으로 나타내는 모식도.FIG. 13 is a schematic diagram schematically showing a filter comprising a high melting point and a low melting point polyvinylidene fluoride nanofiber nonwoven fabric and a bicomponent substrate. FIG.

도 14는 본 발명의 나일론 나노섬유 부직포와 이성분 기재를 포함하는 필터를 개략적으로 나타내는 모식도,14 is a schematic diagram schematically showing a filter comprising a nylon nanofiber nonwoven fabric of the present invention and a two-component base material,

도 15는 본 발명의 기재 양면에 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도,15 is a schematic diagram showing a filter including a polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric on both sides of the substrate of the present invention;

도 16은 본 발명에 의한 전기방사장치의 일 실시예를 개략적으로 나타내는 측면도,16 is a side view schematically showing an embodiment of an electrospinning apparatus according to the present invention;

도 17은 본 발명의 기재 양면에 다중 섬유직경군을 갖는 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도,17 is a schematic diagram schematically showing a filter including a polyvinylidene fluoride nanofiber nonwoven fabric having multiple fiber diameter groups on both sides of the substrate of the present invention;

도 18은 본 발명의 기재 양면에 고융점 폴리비닐리덴 플루오라이드 나노섬유부직포 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도,18 is a schematic diagram schematically showing a filter including a high melting point polyvinylidene fluoride nanofiber nonwoven fabric and a low melting point polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the substrate of the present invention;

도 19는 본 발명의 기재 양면에 나일론 나노섬유 부직포 및 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도,19 is a schematic diagram schematically showing a filter including a nylon nanofiber nonwoven fabric and a polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the substrate of the present invention;

도 20은 본 발명의 기재 양면에 폴리우레탄 나노섬유 부직포 및 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도,20 is a schematic diagram schematically showing a filter including a polyurethane nanofiber nonwoven fabric and a polyvinylidene fluoride nanofiber nonwoven fabric on both sides of a substrate of the present invention;

<부호의 설명><Description of the code>

1, 1' : 전기방사장치, 3 : 공급롤러, 1, 1 ': electrospinning device, 3: feed roller,

5 : 권취롤러, 7 : 주 제어장치,5: winding roller, 7: main controller,

8 : 방사용액 주탱크, 10a, 10b, 10c, 10d : 유닛,8: spinning solution main tank, 10a, 10b, 10c, 10d: unit,

11 : 노즐블록, 12 : 노즐,11: nozzle block, 12: nozzle,

13 : 컬렉터, 13: collector,

14, 14a, 14b, 14c, 14d : 전압 발생장치,14, 14a, 14b, 14c, 14d: voltage generator,

15, 15a, 15b : 장척시트, 16 : 보조 이송장치,15, 15a, 15b: long sheet, 16: auxiliary feeder,

16a : 보조벨트, 16b : 보조벨트 롤러,16a: auxiliary belt, 16b: auxiliary belt roller,

18 : 케이스, 19 : 절연부재,18 case, 19 insulation member,

30 : 장척시트 이송속도 조절장치, 31 : 완충구간,30: long sheet feed speed adjusting device, 31: buffer section,

33, 33' : 지지롤러, 35 : 조절롤러,33, 33 ': supporting roller, 35: adjusting roller,

40 : 관체, 60 : 온도조절 제어장치,40: tube body, 60: temperature control controller,

70 : 두께 측정장치, 80 : 통기도 계측장치,70: thickness measuring device, 80: air permeability measuring device,

90 : 라미네이팅 장치, 110 : 플립장치,90: laminating device, 110: flip device,

111, 111' : 가이드편, 112, 112' : 가이드홈,111, 111 ': guide, 112, 112': guide groove,

200 : 오버플로우 장치, 211, 231 : 교반장치,200: overflow device, 211, 231: agitator,

212, 213, 214, 233 : 밸브, 216 : 제2 이송배관,212, 213, 214, 233: valve, 216: second conveying piping,

218 : 제2 이송제어장치, 220 : 중간탱크,218: second transfer control device, 220: intermediate tank,

222 : 제2 센서, 230 : 재생탱크,222: second sensor, 230: regeneration tank,

232 : 제1 센서, 240 : 공급배관,232: first sensor, 240: supply piping,

242 : 공급제어밸브, 250 : 방사용액 회수 경로,242: supply control valve, 250: spinning solution return path,

251 : 제1 이송배관, 300 : VOC 재활용 장치,251: first transfer pipe, 300: VOC recycling device,

310 : 응축장치, 311, 321, 331, 332 : 배관,310: condenser, 311, 321, 331, 332: piping,

320 : 증류장치, 330 : 용매 저장장치.320: distillation apparatus, 330: solvent storage apparatus.

이하, 본 발명에 의한 바람직한 실시예를 첨부된 도면을 참조하면서 상세하게 설명한다. 또한, 본 실시예에서는 본 발명의 권리범위를 한정하는 것은 아니고, 단지 예시로 제시한 것이며, 그 기술적인 요지를 이탈하지 않는 범위 내에서 다양한 변경이 가능하다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only, and various modifications may be made without departing from the technical gist of the present invention.

도 1은 본 발명에 의한 전기방사장치를 개략적으로 나타내는 측면도이고, 도 2는 본 발명에 의한 전기방사장치의 각 유닛 내에 설치되는 노즐블록을 개략적으로 나타내는 평면도이며, 도 3은 본 발명에 의한 전기방사장치의 보조 이송장치를 개략적으로 나타내는 도면이고, 도 4는 본 발명에 의한 전기방사장치의 보조 이송장치의 보조벨트 롤러의 다른 실시예를 개략적으로 나타내는 도면이며, 도 5 내지 도 8은 본 발명에 의한 전기방사장치의 장척시트 이송속도 조절장치의 동작과정을 개략적으로 나타내는 측면도이며, 도 9는 본 발명에 의한 셀룰로오스 기재 양면에 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이고, 도 10은 본 발명에 의한 폴리에틸렌 테레프탈레이트 기재 양면에 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이며, 도 11은 본 발명의 이성분 기재의 양면에 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이고, 도 12는 본 발명의 폴리비닐리덴 플루오라이드 나노섬유 부직포와 이성분 기재를 포함하는 필터를 개략적으로 나타내는 모식도이며, 도 13은 본 발명의 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포와 이성분 기재를 포함하는 필터를 개략적으로 나타내는 모식도이고, 도 14는 본 발명의 나일론 나노섬유 부직포와 이성분 기재를 포함하는 필터를 개략적으로 나타내는 모식도이며, 도 15는 본 발명의 기재 양면에 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이다. 도 16은 본 발명에 의한 전기방사장치의 일 실시예를 개략적으로 나타내는 측면도이고, 도 17은 본 발명의 기재 양면에 다중 섬유직경군을 갖는 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이며, 도 18은 본 발명의 기재 양면에 고융점 폴리비닐리덴 플루오라이드 나노섬유부직포 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이고, 도 19는 본 발명의 기재 양면에 나일론 나노섬유 부직포 및 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이며, 도 20은 본 발명의 기재 양면에 폴리우레탄 나노섬유 부직포 및 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터를 개략적으로 나타내는 모식도이다.1 is a side view schematically showing an electrospinning device according to the present invention, FIG. 2 is a plan view schematically showing a nozzle block installed in each unit of the electrospinning device according to the present invention, and FIG. 4 is a view schematically showing an auxiliary feeder of the spinning apparatus, FIG. 4 is a view schematically showing another embodiment of the auxiliary belt roller of the auxiliary feeder of the electrospinning apparatus according to the present invention, and FIGS. 5 to 8 are the present invention. 9 is a side view schematically showing an operation process of a long sheet conveying speed adjusting apparatus of an electrospinning apparatus according to the present invention, and FIG. 9 is a schematic diagram schematically showing a filter including polyvinylidene fluoride nanofiber nonwoven fabric on both sides of a cellulose substrate according to the present invention. 10 is a polyvinylidene flu on both sides of a polyethylene terephthalate substrate according to the present invention. It is a schematic diagram which shows the filter containing a lide nanofiber nonwoven fabric, FIG. 11 is a schematic diagram which shows the filter containing a polyvinylidene fluoride-hot melt nanofiber nonwoven fabric on both surfaces of the bicomponent base material of this invention, FIG. Is a schematic diagram showing a filter comprising a polyvinylidene fluoride nanofiber nonwoven fabric of the present invention and a bicomponent substrate, and FIG. 13 is a high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric and a bicomponent substrate. It is a schematic diagram which shows the filter containing, FIG. 14 is a schematic diagram which shows the filter containing the nylon nanofiber nonwoven fabric of this invention and a bicomponent base material, FIG. 15 is a polyurethane and polyvinyl on both surfaces of the base material of this invention. A filter comprising a lidene fluoride mixed nanofiber nonwoven is schematically It is a schematic diagram to show. Figure 16 is a side view schematically showing an embodiment of the electrospinning apparatus according to the present invention, Figure 17 is a schematic view of a filter comprising a polyvinylidene fluoride nanofiber nonwoven fabric having a multi-fiber diameter group on both sides of the substrate of the present invention 18 is a schematic diagram schematically showing a filter including a high melting point polyvinylidene fluoride nanofiber nonwoven fabric and a low melting point polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the substrate of the present invention, and FIG. It is a schematic diagram which shows the filter containing a nylon nanofiber nonwoven fabric and polyvinylidene fluoride nanofiber nonwoven fabric on both surfaces of the base material of this invention, FIG. 20 is a polyurethane nanofiber nonwoven fabric and polyvinylidene fluoride nanoparticles on both sides of the base material of this invention. A schematic representation of a filter comprising a fibrous nonwoven fabric A.

도면에서 도시하고 있는 바와 같이, 본 발명에 의한 전기방사장치(1)는 상향식 전기방사장치(1)로 이루어지되, 적어도 하나 이상의 유닛(10a, 10b)이 일정간격 이격되어 순차적으로 구비되고, 상기 각 유닛(10a, 10b)은 동일한 고분자 방사용액을 개별적으로 전기방사하거나, 재질이 상이한 고분자 방사용액을 개별적으로 전기방사하여 부직포 등의 필터소재를 제조한다.As shown in the figure, the electrospinning apparatus 1 according to the present invention comprises a bottom-up electrospinning apparatus 1, at least one or more units (10a, 10b) are provided sequentially spaced at a predetermined interval, Each unit 10a, 10b electrospins the same polymer spinning solution individually, or separately electrospins the polymer spinning solution of different materials to produce a filter material such as a nonwoven fabric.

이를 위하여 상기 각 유닛(10a, 10b)은 그 내부에 고분자 방사용액이 내부에 충진되는 방사용액 주탱크(8)와 상기 방사용액 주탱크(8) 내에 충진된 고분자 방사용액을 정량으로 공급하기 위한 계량펌프(미도시)와 상기 방사용액 주탱크(8) 내에 충진된 고분자 방사용액을 토출하되, 핀 형태로 이루어지는 노즐(12)이 다수개 배열설치되는 노즐블록(11)과 상기 노즐(12)에서 분사되는 고분자 방사용액을 집적하기 위하여 노즐(12)에서 일정간격 이격되는 컬렉터(13) 및 상기 컬렉터(13)에 전압을 발생시키는 전압 발생장치(14a, 14b)를 포함하는 구성으로 이루어진다.To this end, each unit (10a, 10b) is for supplying a quantitative supply of the polymer spinning solution filled in the spinning solution main tank (8) and the spinning solution main tank (8) filled therein the polymer spinning solution therein Discharge the polymer spinning solution filled in the metering pump (not shown) and the spinning solution main tank (8), wherein the nozzle block 11 and the nozzle 12 are arranged in a plurality of nozzles (12) In order to accumulate the polymer spinning solution to be injected from the nozzle 12 is composed of a configuration comprising a collector 13 and a voltage generator (14a, 14b) for generating a voltage to the collector 13 spaced apart.

상기한 바와 같은 구조에 의하여 본 발명에 의한 전기방사장치(1)는 방사용액 주탱크(8) 내에 충진되는 고분자 방사용액이 계량펌프를 통하여 노즐블록(11)에 형성되는 다수의 노즐(12) 내에 연속적으로 정량 공급되고, 공급되는 고분자 방사용액은 노즐(12)을 통해 높은 전압이 걸려 있는 컬렉터(13) 상에 방사 및 집속되어 컬렉터(13) 상에서 이동되는 장척시트(15) 상에 나노섬유 부직포를 형성하며, 형성되는 나노섬유 부직포는 필터 또는 부직포로 제조된다.By the structure as described above, the electrospinning apparatus 1 according to the present invention includes a plurality of nozzles 12 in which the polymer spinning solution filled in the spinning solution main tank 8 is formed in the nozzle block 11 through a metering pump. Continuously quantitatively supplied, the polymer spinning solution is supplied to the nanofibers on the long sheet 15 that is radiated and focused on the collector 13 is applied to the high voltage through the nozzle 12 is moved on the collector 13 The nonwoven fabric is formed, and the nanofiber nonwoven fabric formed is made of a filter or nonwoven fabric.

여기서, 상기 전기방사장치(1)의 각 유닛(10a, 10b) 중 선단에 위치하는 유닛(10a)의 전방에는 유닛(10a) 내로 공급되어 고분자 방사용액의 분사에 의해 나노섬유 부직포가 적층형성되는 장척시트(15)를 공급하기 위한 공급롤러(3)가 구비되고, 각 유닛(10a, 10b) 중 후단에 위치하는 유닛(10b)의 후방에는 나노섬유 부직포가 적층형성되는 장척시트(15)를 권취하기 위한 권취롤러(5)가 구비된다.Here, the front of the unit (10a) located at the front end of each unit (10a, 10b) of the electrospinning apparatus 1 is supplied into the unit (10a) is a nanofiber nonwoven fabric laminated by the injection of the polymer spinning solution A feed roller 3 for supplying the long sheet 15 is provided, and a long sheet 15 in which nanofiber nonwoven fabric is laminated is formed at the rear of the unit 10b positioned at the rear end of each unit 10a, 10b. A winding roller 5 for winding up is provided.

한편, 상기 각 유닛(10a, 10b)을 통과하면서 고분자 방사용액이 적층형성되는 장척시트(15)는 부직포 또는 직물 등으로 이루어지는 것이 바람직하나, 이에 한정하지 아니한다.Meanwhile, the long sheet 15 in which the polymer spinning solution is laminated while passing through the units 10a and 10b is preferably made of a nonwoven fabric or a woven fabric, but is not limited thereto.

이때, 상기 전기방사장치(1)의 각 유닛(10a, 10b)을 통하여 방사되는 고분자 방사용액의 재질은 별도로 제한받지 아니하나, 예를 들면 폴리프로필렌(PP), 폴리에틸렌텔레프탈레이트(PET), 폴리비닐리덴플루라이드, 나일론, 폴리비닐아세테이트, 폴리메틸메타아크릴레이트, 폴리아크릴로니트릴(PAN), 폴리우레탄(PUR), 폴리부틸렌텔레프탈레이트(PBT), 폴리비닐부틸랄, 폴리비닐클로라이드, 폴리에틸렌이민, 폴리올레핀, 폴리유산(PLA), 폴리초산비닐(PVAc), 폴리에틸렌나프탈레이트(PEN), 폴리아미드(PA), 폴리비닐알콜(PVA), 폴리에틸렌이미드(PEI), 폴리카프로락톤(PCL), 폴리유산글리롤산(PLGA), 실크, 셀룰로오스, 키토산 등이 있으며, 그 중 폴리프로필렌(PP)재질의 소재와 내열성 고분자 물질인 폴리아마이드, 폴리이미드, 폴리아마이드이미드, 폴리(메타-페닐렌 이소프탈아미이드), 폴리설폰, 폴리에테르케톤, 폴리에테르이미드, 폴리에틸렌텔레프탈레이트, 폴리트리메틸렌텔레프탈레이트, 폴리에틸렌 나프탈레이트 등과 같은 방향족 폴리에스터, 폴리테트라플루오로에틸렌, 폴리디페녹시포스파젠, 폴리 비스[2-(2-메톡시에톡시)포스파젠]과 같은 폴리포스파젠류, 폴리우레탄 및 폴리에테르우레탄을 포함하는 폴리우레탄 공중합체, 셀룰로오스 아세테이트, 셀룰로오스 아세테이트 부틸레이트, 셀룰로오스 아세테이트 프로피오네이트 등의 폴리머로 이루어진 군이 상용적으로 사용되는 것이 바람직하다.At this time, the material of the polymer spinning solution radiated through each unit (10a, 10b) of the electrospinning apparatus 1 is not limited separately, for example, polypropylene (PP), polyethylene terephthalate (PET), poly Vinylidene fluoride, nylon, polyvinylacetate, polymethylmethacrylate, polyacrylonitrile (PAN), polyurethane (PUR), polybutylene terephthalate (PBT), polyvinyl butyral, polyvinyl chloride, polyethylene Imines, polyolefins, polylactic acid (PLA), polyvinyl acetate (PVAc), polyethylene naphthalate (PEN), polyamide (PA), polyvinyl alcohol (PVA), polyethyleneimide (PEI), polycaprolactone (PCL) , Polylactic acid glycerol (PLGA), silk, cellulose, chitosan, and the like, and polyamide (PP) material and polyamide, polyimide, polyamideimide, poly (meth-phenylene isoprop) Amide), polysulfone, polyetherketone, polyetherimide, polyethylene terephthalate, polytrimethylene telephthalate, polyethylene naphthalate and the like, aromatic polyesters, polytetrafluoroethylene, polydiphenoxyphosphazene, poly bis [ Polyphosphazenes such as 2- (2-methoxyethoxy) phosphazene], polyurethane copolymers including polyurethanes and polyetherurethanes, polymers such as cellulose acetate, cellulose acetate butyrate and cellulose acetate propionate Group consisting of is preferably used commercially.

또한, 상기 유닛(10a, 10b) 내에서 노즐(12)을 통하여 공급되는 방사용액은 상기 전기방사가 가능한 합성수지 재질인 폴리머를 적당한 용매에 용해시킨 용액으로서, 용매의 종류 또한 폴리머를 용해시킬 수 있는 것이라면 제한되지 않으며, 예를 든다면 페놀, 포름산, 황산, m-크레솔, 티플루오르아세트앤하이드라이드/다이클로로메테인, 물, N-메틸모폴린 N-옥시드, 클로로폼, 테트라히드로푸란과 지방족 케톤군인 메틸이소부틸케톤, 메틸에틸케톤, 지방족 수산기 군인 m-부틸알콜, 이소부틸알콜, 이소프로필알콜, 메틸알콜, 에탄올, 지방족 화합물인 헥산, 테트라클로로에틸렌, 아세톤, 글리콜군으로서 프로필렌글리콜, 디에틸렌글리콜, 에틸렌글리콜, 할로겐 화합물군으로 트리크롤로에틸렌, 다이클로로메테인, 방향족 화합물 군인 톨루엔, 자일렌, 지방족 고리 화합물군으로서 사이클로헥사논, 시클로헥산과 에스테르군으로 n-부틸초산염, 초산에틸, 지방족에테르군으로 부틸셀로살브, 아세트산2-에톡시에탄올, 2-에톡시에탄올, 아미드로 디메틸포름아미드, 디메틸아세트아미드 등을 사용할 수 있으며, 복수 종류의 용매를 혼합하여 이용할 수 있다. 방사용액에는 도전성 향상제 등의 첨가제를 함유하는 것이 바람직하다.In addition, the spinning solution supplied through the nozzle 12 in the units 10a and 10b is a solution in which the polymer of the electrospinable synthetic resin material is dissolved in a suitable solvent, and the type of solvent may also dissolve the polymer. But not limited to, for example, phenol, formic acid, sulfuric acid, m-cresol, thifluoroacetic & hydride / dichloromethane, water, N-methylmorpholine N-oxide, chloroform, tetrahydrofuran Methyl isobutyl ketone, methyl ethyl ketone, aliphatic hydroxyl group m-butyl alcohol, isobutyl alcohol, isopropyl alcohol, methyl alcohol, ethanol, aliphatic ketone group, propylene glycol as hexane, tetrachloroethylene, acetone, glycol group , Diethylene glycol, ethylene glycol, halogenated compound, trichloroethylene, dichloromethane, aromatic compound, toluene, xylene, aliphatic Cyclohexanone, cyclohexane and ester group as n-butyl acetate, ethyl acetate, aliphatic ether group as butyl cellosalb, acetic acid 2-ethoxyethanol, 2-ethoxyethanol, amide as dimethyl formamide, Dimethyl acetamide, etc. can be used, A plurality of solvents can be mixed and used. It is preferable to contain additives, such as a conductivity improving agent, in a spinning solution.

한편, 본 발명에 의한 전기방사장치(1)에 오버플로우 장치(200)가 구비된다. 즉, 상기 전기방사장치(1)의 각 유닛(10a, 10b)에는 방사용액 주탱크(8)와 제2 이송배관(216)과 제2 이송제어장치(218)와 중간탱크(220) 및 재생탱크(230)를 포함하여 이루어진 오버플로우 장치(200)가 각각 구비된다.On the other hand, the overflow device 200 is provided in the electrospinning apparatus 1 according to the present invention. That is, each unit (10a, 10b) of the electrospinning device (1) in the spinning solution main tank 8, the second transfer pipe 216, the second transfer control device 218 and the intermediate tank 220 and regeneration Each overflow device 200 including a tank 230 is provided.

본 발명의 일 실시예에서는 상기 전기방사장치(1)의 각 유닛(10a, 10b)에 오버플로우 장치(200)가 각각 구비되어 있으나, 상기 각 유닛(10a, 10b) 중 어느 한 유닛(10a)에 오버플로우 장치(200)가 구비되고, 상기 오버플로우 장치(200)에 후단부에 위치한 유닛(10b)이 일체로 연결되는 구조로 이루어지는 것도 가능하다.In one embodiment of the present invention, each of the units 10a and 10b of the electrospinning apparatus 1 is provided with an overflow device 200, but any one of the units 10a and 10b is the unit 10a. The overflow device 200 is provided, and the unit 10b located at the rear end of the overflow device 200 may be integrally connected.

상기한 바와 같은 구조에 의하여, 상기 방사용액 주탱크(8)는 나노섬유의 원료가 되는 방사용액을 저장한다. 방사용액 주탱크(8) 내에는 방사용액의 분리나 응고를 방지하기 위한 교반장치(211)를 내부에 구비한다.By the structure as described above, the spinning solution main tank 8 stores the spinning solution serving as a raw material of the nanofibers. The spinning solution main tank 8 is provided with a stirring device 211 for preventing separation or solidification of the spinning solution.

상기 제2 이송배관(216)은 상기 방사용액 주탱크(8) 또는 재생탱크(230)에 접속된 파이프와 밸브(212, 213, 214)로 구성되고, 상기 방사용액 주탱크(8) 또는 재생탱크(230)에서 중간탱크(220)로 방사용액을 이송한다.The second conveying pipe 216 is composed of a pipe and valves 212, 213, and 214 connected to the spinning solution main tank 8 or the regeneration tank 230, and the spinning solution main tank 8 or regeneration. The spinning solution is transferred from the tank 230 to the intermediate tank 220.

상기 제2 이송제어장치(218)는 상기 제2 이송배관(216)의 밸브(212, 213, 214)를 제어함으로써, 제2 이송배관(216)의 이송동작을 제어한다. 상기 밸브(212)는 방사용액 주탱크(8)에서 중간탱크(220)로 방사용액의 이송을 제어하며, 상기 밸브(213)는 재생탱크(230)에서 중간탱크(220)로 방사용액의 이송을 제어한다. 상기 밸브(214)는 방사용액 주탱크(8) 및 재생탱크(230)에서 중간탱크(220)로 유입되는 고분자 방사용액의 양을 제어한다.The second transfer control device 218 controls the transfer operation of the second transfer pipe 216 by controlling the valves 212, 213, 214 of the second transfer pipe 216. The valve 212 controls the transfer of the spinning solution from the spinning solution main tank 8 to the intermediate tank 220, and the valve 213 transfers the spinning solution from the regeneration tank 230 to the intermediate tank 220. To control. The valve 214 controls the amount of polymer spinning solution flowing into the intermediate tank 220 from the spinning solution main tank 8 and the regeneration tank 230.

상기 중간탱크(220)는 방사용액 주탱크(8) 또는 재생탱크(230)로부터 공급된 방사용액을 저장하고, 노즐블록(11)으로 상기 방사용액을 공급하며, 공급된 방사용액의 액면높이를 측정하는 제2 센서(222)를 구비하고 있다. The intermediate tank 220 stores the spinning solution supplied from the spinning solution main tank 8 or the regeneration tank 230, supplies the spinning solution to the nozzle block 11, and adjusts the liquid level of the supplied spinning solution. The second sensor 222 to measure is provided.

상기 중간탱크(220)는 방사용액 주탱크(8) 또는 재생탱크(230)로부터 공급된 방사용액을 저장하고, 노즐블록(11)으로 상기 방사용액을 공급하며, 공급된 방사용액의 액면높이를 측정하는 제2 센서(222)를 구비하고 있다. The intermediate tank 220 stores the spinning solution supplied from the spinning solution main tank 8 or the regeneration tank 230, supplies the spinning solution to the nozzle block 11, and adjusts the liquid level of the supplied spinning solution. The second sensor 222 to measure is provided.

상기 제2 센서(222)는 액면높이 측정이 가능한 센서면 가능하고, 예를 들면 광센서 혹은 적외선 센서 등으로 이루어지는 것이 바람직하다.The second sensor 222 may be a sensor capable of measuring the liquid level, and for example, the second sensor 222 may be an optical sensor or an infrared sensor.

상기 중간탱크(220)의 하부에는 노즐블록(11)으로 방사용액을 공급하는 공급배관(240)과 공급제어밸브(242)가 구비되어 있는데, 상기 공급제어밸브(242)는 상기 공급배관(240)의 공급동작을 제어한다.The lower portion of the intermediate tank 220 is provided with a supply pipe 240 and a supply control valve 242 for supplying the spinning solution to the nozzle block 11, the supply control valve 242 is the supply pipe 240 Control the supply operation.

상기 재생탱크(230)는 오버플로우되어 회수된 방사용액을 저장하고 방사용액의 분리나 응고를 방지하기 위한 교반장치(231)를 내부에 갖고, 회수된 방사용액의 액면높이를 측정하는 제1 센서(232)를 구비하고 있다.The regeneration tank 230 has a stirring device 231 for storing the spinning solution recovered by overflow and preventing separation or solidification of the spinning solution, and measuring a liquid level of the recovered spinning solution. 232 is provided.

상기 제1 센서(232)는 액면높이 측정이 가능한 센서면 가능하고, 예를 들면 광센서 혹은 적외선 센서 등으로 이루어지는 것이 바람직하다.The first sensor 232 may be a sensor capable of measuring the liquid level, and for example, the first sensor 232 may be an optical sensor or an infrared sensor.

한편, 노즐블록(11)에서 오버플로우된 방사용액은 노즐블록(11)하부에 구비된 방사용액 회수 경로(250)를 통하여 회수된다. 상기 방사용액 회수 경로(250)는 제1 이송배관(251)을 통해 재생탱크(230)로 방사용액을 회수한다.On the other hand, the spinning solution overflowed from the nozzle block 11 is recovered through the spinning solution recovery path 250 provided under the nozzle block 11. The spinning solution recovery path 250 recovers spinning solution to the regeneration tank 230 through the first transfer pipe 251.

그리고, 제1 이송배관(251)은 상기 재생탱크(230)에 접속되는 파이프와 펌프를 구비하고, 상기 펌프의 동력으로 방사용액을 방사용액 회수 경로(250)로부터 재생탱크로(230)이송한다.The first transfer pipe 251 includes a pipe and a pump connected to the regeneration tank 230, and transfers the spinning solution from the spinning solution recovery path 250 to the regeneration tank 230 by the power of the pump. .

이때, 재생탱크(230)는 적어도 하나 이상인 것이 바람직하며, 2개 이상인 경우에는 상기 제1 센서(232)와 밸브(233)가 복수개로 구비되는 것도 가능하다.At this time, the regeneration tank 230 is preferably at least one, in the case of two or more may be provided with a plurality of the first sensor 232 and the valve 233.

이어서, 재생탱크(230)가 2개 이상인 경우, 재생탱크(230) 상부에 위치한 밸브(233)도 복수로 구비됨에 따라 제1 이송제어장치(미도시)는 상기 재생탱크(230)에 구비된 상기 제1 센서(232)의 액면높이에 따라서 상부에 위치한 2개 이상의 밸브(233)를 제어하여 방사용액을 복수의 재생탱크(230) 중 어느 하나의 재생탱크(230)로 이송할지 여부를 제어한다.Subsequently, when there are two or more regeneration tanks 230, a plurality of valves 233 positioned above the regeneration tank 230 are also provided, so that a first transfer control device (not shown) is provided in the regeneration tank 230. Control two or more valves 233 located above the liquid level of the first sensor 232 to control whether the spinning solution is transferred to any one of the plurality of regeneration tanks 230. do.

한편, 상기 전기방사장치(1)에 VOC 재활용 장치(300)가 구비된다. 즉, 상기 전기방사장치(1)의 각 유닛(10a, 10b)에 노즐(12)을 통하여 고분자 방사용액의 방사 시 발생되는 VOC(Volatile Organic Compounds : 휘발성 유기 화합물)를 응축하여 액화시키기 위한 응축장치(310)와 상기 응축장치(310)를 통하여 응축된 VOC를 증류하여 액화시키는 증류장치(320) 및 상기 증류장치(320)를 통하여 액화된 용매를 저장하기 위한 용매 저장장치(330)를 포함하는 VOC 재활용 장치(300)가 구비된다.On the other hand, the electrospinning apparatus 1 is provided with a VOC recycling apparatus 300. That is, a condenser for condensing and liquefying VOCs (Volatile Organic Compounds) generated during spinning of the polymer spinning solution through the nozzles 12 on the units 10a and 10b of the electrospinning apparatus 1. And a distillation apparatus 320 for distilling and liquefying the VOC condensed through the condenser 310 and a solvent storage device 330 for storing the liquefied solvent through the distillation apparatus 320. The VOC recycling apparatus 300 is provided.

여기서, 상기 응축장치(310)는 수냉식, 증발식 또는 공냉식 응축장치로 이루어지는 것이 바람직하나, 이에 한정하지 아니한다.Here, the condenser 310 is preferably made of a water-cooled, evaporative or air-cooled condenser, but is not limited thereto.

한편, 상기 각 유닛(10a, 10b) 내에서 발생되는 기화상태의 VOC를 응축장치(310)로 유입시키고, 상기 응축장치(310)에서 발생되는 액화상태의 VOC를 용매 저장장치(330)에 저장하기 위한 배관(311, 331)이 각각 연결설치된다.Meanwhile, the vaporized VOC generated in each of the units 10a and 10b is introduced into the condenser 310, and the liquefied VOC generated in the condenser 310 is stored in the solvent storage device 330. Pipings 311 and 331 for connecting are respectively installed.

즉, 상기 각 유닛(10a, 10b)과 응축장치(310), 상기 응축장치(310)와 용매 저장장치(330)를 상호 연결하기 위한 배관(311, 331)이 각각 연결설치된다.That is, the pipes 311 and 331 for connecting the units 10a and 10b and the condenser 310 and the condenser 310 and the solvent storage device 330 are connected to each other.

본 발명의 일 실시예에서는 상기 응축장치(310)를 통하여 VOC를 응축시킨 후 응축된 액화상태의 VOC가 용매 저장장치(330)로 공급되는 구조로 이루어져 있으나, 상기 응축장치(310)와 용매 저장장치(330) 사이에 증류장치(320)가 구비되어 하나 이상의 용매가 적용될 경우, 각각의 용매를 분리 및 분류하도록 이루어지는 것도 가능하다. In an embodiment of the present invention, the condensed VOC is condensed through the condenser 310, and the condensed liquefied VOC is supplied to the solvent storage device 330, but the condenser 310 and the solvent storage are provided. It is also possible to provide a distillation apparatus 320 between the apparatus 330 to separate and classify each solvent when one or more solvents are applied.

여기서, 상기 증류장치(320)는 응축장치(310)에 연결되어 액화상태의 VOC를 고온의 열로 가열하여 기화시키고, 이를 다시 냉각하여 액화되는 VOC를 용매 저장장치(330)로 공급된다.Here, the distillation apparatus 320 is connected to the condenser 310 to heat and vaporize the liquefied state of the VOC with high temperature heat, and is cooled again to supply the liquefied VOC to the solvent storage device (330).

이 경우, 상기 VOC 재활용 장치(300)은 각 유닛(10a, 10b)을 통하여 배출되는 기화된 VOC에 공기 및 냉각수를 공급하여 응축 및 액화시키는 응축장치(310)와 상기 응축장치(310)를 통하여 응축된 VOC에 열을 가하여 기화상태로 만든 다음, 다시 냉각시켜 액화상태로 만드는 증류장치(320) 및 상기 증류장치(320)를 통하여 액화된 VOC를 저장하기 위한 용매 저장장치(330)를 포함하여 구성된다.In this case, the VOC recycling apparatus 300 is provided through the condenser 310 and the condenser 310 to condense and liquefy by supplying air and cooling water to the vaporized VOC discharged through each unit (10a, 10b) Including a distillation apparatus 320 for applying a heat to the condensed VOC to a vaporized state, and then cooled again to a liquefied state and a solvent storage device 330 for storing the liquefied VOC through the distillation apparatus 320 It is composed.

여기서, 상기 증류장치(320)는 분별증류장치로 이루어지는 것이 바람직하나, 이에 한정하지 아니한다.Here, the distillation apparatus 320 is preferably made of a fractional distillation apparatus, but is not limited thereto.

즉, 상기 각 유닛(10a, 10b)과 응축장치(310), 상기 응축장치(310)와 증류장치(320) 및 상기 증류장치(320)와 용매 저장장치(330)를 상호 연결하기 위한 배관(311, 321, 331)이 각각 연결설치된다.That is, piping for connecting the units 10a and 10b and the condenser 310, the condenser 310 and the distillation apparatus 320, and the distillation apparatus 320 and the solvent storage device 330 to each other ( 311, 321, and 331 are connected to each other.

이어서, 오버플로우 되어 상기 재생탱크(230)에 회수된 방사용액에 있어서의 용매의 함유율을 측정한다. 해당 측정은 재생탱크(230) 중에 방사용액의 일부를 샘플로 하여 추출하고, 해당 샘플을 분석함으로 실시할 수 있다. 방사용액의 분석은 이미 알려진 방법으로 행할 수 있다.Subsequently, the content of the solvent in the spinning solution overflowed and recovered in the regeneration tank 230 is measured. The measurement can be carried out by extracting a portion of the spinning solution in the regeneration tank 230 as a sample, and analyzing the sample. Analysis of the spinning solution can be carried out by known methods.

상기한 바와 같은 해당 측정결과를 기초로 하여, 필요한 양의 용매는 상기 용매 저장장치(330)에 공급되는 액화상태의 VOC를 배관(332)을 통하여 상기 재생탱크(230)에 공급된다. 즉, 액화된 VOC는 측정결과에 따라 필요한 양만큼 상기 재생탱크(230)에 공급되어 용매로써 재사용 및 재활용이 가능하다.Based on the measurement result as described above, the required amount of solvent is supplied to the regeneration tank 230 through the pipe 332 of the liquefied VOC supplied to the solvent storage device 330. That is, the liquefied VOC is supplied to the regeneration tank 230 in a required amount according to the measurement result, and can be reused and recycled as a solvent.

여기서, 상기 전기방사장치(1)의 각 유닛(10a, 10b)을 구성하는 케이스(18)는 도전체로 이루어지는 것이 바람직하나, 상기 케이스(18)가 절연체로 이루어지거나, 상기 케이스(18)가 도전체 및 절연체가 혼용되어 적용되는 것도 가능하고, 기타 다양한 재질로 이루어지는 것도 가능하다. Here, the case 18 constituting the units 10a and 10b of the electrospinning apparatus 1 is preferably made of a conductor, but the case 18 is made of an insulator or the case 18 is made of conductive material. The body and the insulator may be mixed and applied, or may be made of various other materials.

또한, 상기 케이스(18)의 상부가 절연체로 이루어지고, 그 하부가 도전체로 혼용되어 적용되는 경우에는 절연부재(19)를 삭제하는 것도 가능하다. 이를 위하여 상기 케이스(18)는 도전체로 형성되는 하부와 절연체로 형성되는 상부가 상호 결합되어 하나의 케이스(18)로 형성되는 것이 바람직하나, 이에 한정하지 아니한다.In addition, when the upper portion of the case 18 is made of an insulator, and the lower portion thereof is used as a conductor, the insulating member 19 may be deleted. To this end, the case 18 is preferably formed as a single case 18 is coupled to the lower portion formed of a conductor and the upper portion formed of an insulator, but is not limited thereto.

상기한 바와 같이, 상기 케이스(18)를 도전체 및 절연체로 형성하되, 상기 케이스(18)의 상부를 절연체로 형성함으로써 케이스(18)의 상부 내측면에 컬렉터(13)를 취부하기 위하여 별도로 구비되는 절연부재(19)의 삭제가 가능하며, 이로 인해 장치의 구성을 간소화할 수 있다.As described above, the case 18 is formed of a conductor and an insulator, and the upper part of the case 18 is formed of an insulator, and is separately provided to attach the collector 13 to the upper inner surface of the case 18. It is possible to delete the insulating member 19, which can simplify the configuration of the device.

또한, 상기 컬렉터(13)와 케이스(18) 사이의 절연을 최적화할 수 있어 노즐블록(11)과 컬렉터(13) 사이에 35kV를 인가하여 전기방사를 실시할 경우, 상기 컬렉터(13)와 케이스(18) 및 그 외 기타 부재 사이에서 발생될 수 있는 절연파괴를 방지할 수 있다.In addition, the insulation between the collector 13 and the case 18 can be optimized, and when the electrospinning is performed by applying 35 kV between the nozzle block 11 and the collector 13, the collector 13 and the case 18. It is possible to prevent breakdown of insulation which may occur between (18) and other members.

더불어, 리크 전류를 소정 범위 내에 멈출 수 있어 전압 발생장치(14a, 14b)로부터 공급되는 전류의 감시가 가능하고, 전기방사장치(1)의 이상을 조기에 감지할 수 있으며, 이로 인해 전기방사장치(1)의 장시간 연속적인 운전이 가능하고, 요구하는 성능의 나노섬유 제조가 안정적이며, 나노섬유의 대량생산이 가능하다.In addition, the leak current can be stopped within a predetermined range, so that the current supplied from the voltage generators 14a and 14b can be monitored, and an abnormality of the electrospinning apparatus 1 can be detected early, thereby the electrospinning apparatus The long time continuous operation of (1) is possible, nanofiber production of the required performance is stable, and mass production of nanofibers is possible.

여기서, 절연체로 형성되는 상기 케이스(18)의 두께(a)는 "a=8mm"를 만족시키도록 이루어진다. Here, the thickness a of the case 18 formed of an insulator is made to satisfy "a = 8mm".

이로 인해, 상기 노즐블록(11)과 컬렉터(13) 사이에 40kV를 인가하여 전기방사를 실시할 경우, 컬렉터(13)와 케이스(18) 및 그 외 기타 부재 사이에서 발생될 수 있는 절연 파괴를 방지할 수 있으며, 리크 전류를 소정 범위 내로 제한할 수 있다.As a result, when 40 kV is applied between the nozzle block 11 and the collector 13 to perform electrospinning, dielectric breakdown that may occur between the collector 13 and the case 18 and other members is prevented. The leakage current can be prevented and the leakage current can be limited within a predetermined range.

또한, 절연체로 형성되는 케이스(18)의 내측면과 컬렉터(13)의 외주면 사이 거리가 케이스(18)의 두께(a)와 케이스(18)의 내측면과 컬렉터(13)의 외측면 사이의 거리(b)는 "a+b=80mm"를 만족시키도록 이루어진다. In addition, the distance between the inner surface of the case 18 formed of an insulator and the outer circumferential surface of the collector 13 is the distance between the thickness a of the case 18 and the inner surface of the case 18 and the outer surface of the collector 13. The distance b is made to satisfy "a + b = 80mm".

이로 인해, 상기 노즐블록(11)과 컬렉터(13) 사이에 40kV를 인가하여 전기방사를 실시할 경우, 컬렉터(13)와 케이스(18) 및 그 외 기타 부재 사이에서 발생될 수 있는 절연 파괴를 방지할 수 있으며, 리크 전류를 소정 범위 내로 제한할 수 있다.As a result, when 40 kV is applied between the nozzle block 11 and the collector 13 to perform electrospinning, dielectric breakdown that may occur between the collector 13 and the case 18 and other members is prevented. The leakage current can be prevented and the leakage current can be limited within a predetermined range.

한편, 본 발명에 의한 전기방사장치(1)의 각 유닛(10a, 10b) 내에 설치되는 노즐블록(11)의 각 관체(40) 내에 온도조절 제어장치(60)가 구비되며 전압 발생장치(14)와 연결되어 있다. On the other hand, the temperature control controller 60 is provided in each tube 40 of the nozzle block 11 installed in each unit 10a, 10b of the electrospinning apparatus 1 according to the present invention, and the voltage generator 14 )

즉, 도 2에서 도시하고 있는 바와 같이, 상기 각 유닛(10a, 10b) 내에 설치되되, 그 상부에 구비되는 다수개의 노즐(12)로 고분자 방사용액이 공급되는 노즐블록(11)의 관체(40)에 온도조절 제어장치(60)가 구비된다.That is, as shown in Figure 2, the tubular body 40 of the nozzle block 11 is installed in each of the units (10a, 10b), the polymer spinning solution is supplied to a plurality of nozzles 12 provided thereon The thermostat control device 60 is provided.

여기서, 상기 노즐블록(11) 내의 고분자 방사용액의 흐름은 고분자 방사용액이 저장되는 방사용액 주탱크(8)로부터 용액 유동파이프를 통해 각 관체(40)에 공급된다.Here, the flow of the polymer spinning solution in the nozzle block 11 is supplied to each tube 40 through a solution flow pipe from the spinning solution main tank 8 in which the polymer spinning solution is stored.

그리고, 상기 각 관체(40)에 공급된 고분자 방사용액은 다수개의 노즐(12)을 통해 토출 및 분사되어 나노섬유의 형태로 장척시트(15)에 집적된다.In addition, the polymer spinning solution supplied to each of the tubular bodies 40 is discharged and sprayed through a plurality of nozzles 12 and integrated in the long sheet 15 in the form of nanofibers.

이들 각 관체(40)의 상부에 길이 방향으로 다수개의 노즐(12)이 일정간격 이격되어 장착되고, 상기 노즐(12) 및 관체(40)는 도전 부재로 이루어져 전기적으로 접속된 상태로 관체(40)에 장착된다.A plurality of nozzles 12 in the longitudinal direction are mounted on the upper portion of each of the tubular body 40 at regular intervals, and the nozzle 12 and the tubular body 40 are made of a conductive member and the tubular body 40 in an electrically connected state. ) Is mounted.

한편, 도 3에서 도시하고 있는 바와 같이, 본 발명에 의한 전기방사장치(1)의 각 유닛(10a, 10b) 내로 인입 및 공급되는 장척시트(15)의 이송속도를 조절하기 위한 보조 이송장치(16)가 구비된다.On the other hand, as shown in Figure 3, the auxiliary feeder for adjusting the feed rate of the long sheet (15) to be introduced and supplied into each unit (10a, 10b) of the electrospinning apparatus 1 according to the present invention ( 16).

상기 보조 이송장치(16)는 각 유닛(10a, 10b) 내에 설치되는 컬렉터(13)에 정전기적 인력으로 부착된 장척시트(15)의 탈착 및 이송이 용이하도록 장척시트(15)의 이송속도에 동기하여 회전하는 보조벨트(16a) 및 상기 보조벨트(16a)를 지지하며 회전시키는 보조벨트 롤러(16b)를 포함하여 구성된다.The auxiliary conveying device 16 is connected to the conveying speed of the long sheet 15 to facilitate the detachment and conveyance of the long sheet 15 attached by electrostatic attraction to the collector 13 installed in each unit 10a, 10b. It is configured to include a secondary belt 16a for synchronously rotating and the secondary belt roller 16b for supporting and rotating the secondary belt 16a.

상기한 바와 같은 구조에 의하여 상기 보조벨트 롤러(16b)의 회전에 의해 보조벨트(16a)가 회동하고, 상기 보조벨트(16a)의 회동에 의하여 장척시트(15)가 유닛(10a, 10b)으로 인입 및 공급되며, 이를 위하여 상기 보조벨트 롤러(16b) 중 어느 한 보조벨트 롤러(16b)는 모터에 회전가능하게 연결된다.The auxiliary belt 16a is rotated by the rotation of the auxiliary belt roller 16b by the structure as described above, and the long seat 15 is moved to the units 10a, 10b by the rotation of the auxiliary belt 16a. The auxiliary belt roller 16b of one of the auxiliary belt rollers 16b is rotatably connected to the motor for drawing and supplying.

본 발명의 일 실시예에서는 상기 보조벨트(16a)에 보조벨트 롤러(16b)가 5개 구비되고, 모터의 동작에 의해 어느 한 보조벨트 롤러(16b)가 회전됨으로써 보조벨트(16a)가 회동됨과 동시에 나머지 보조벨트 롤러(16b)가 회전되도록 이루어져 있으나, 상기 보조벨트(16a)에 2개 이상의 보조벨트 롤러(16b)가 구비되고, 모터의 동작에 의해 어느 한 보조벨트 롤러(16b)가 회전되고, 이에 따라 보조벨트(16a) 및 나머지 보조벨트 롤러(16b)가 회전되도록 이루어지는 것도 가능하다.In one embodiment of the present invention, the auxiliary belt 16a is provided with five auxiliary belt rollers 16b, and the auxiliary belt 16a is rotated by rotating one of the auxiliary belt rollers 16b by the operation of the motor. At the same time, the remaining auxiliary belt roller 16b is rotated, but at least two auxiliary belt rollers 16b are provided on the auxiliary belt 16a, and any one of the auxiliary belt rollers 16b is rotated by the operation of the motor. Accordingly, the auxiliary belt 16a and the remaining auxiliary belt roller 16b may be rotated.

한편, 본 발명의 일 실시예에서는 상기 보조 이송장치(16)가 모터에 의해 구동가능한 보조벨트 롤러(16b) 및 보조벨트(16a)로 이루어져 있으나, 도 4에서 도시하고 있는 바와 같이, 상기 보조벨트 롤러(16b)가 마찰계수가 낮은 롤러로 이루어지는 것도 가능하다.On the other hand, in one embodiment of the present invention, but the auxiliary conveying device 16 is composed of an auxiliary belt roller 16b and an auxiliary belt 16a which can be driven by a motor, as shown in Figure 4, the auxiliary belt It is also possible for the roller 16b to consist of a roller with a low coefficient of friction.

이때, 상기 보조벨트 롤러(16b)는 마찰계수가 낮은 베어링을 포함하는 롤러로 이루어지는 것이 바람직하다.At this time, the auxiliary belt roller 16b is preferably made of a roller including a low friction coefficient bearing.

본 발명의 일 실시예에서는 상기 보조 이송장치(16)가 보조벨트(16a)와 마찰계수가 낮은 보조벨트 롤러(16b)로 이루어져 있으나, 보조벨트(16a)가 제외된 마찰계수가 낮은 롤러만 구비하여 장척시트(15)의 이송하도록 이루어지는 것도 가능하다.In one embodiment of the present invention, but the auxiliary conveying device 16 is composed of the auxiliary belt 16a and the auxiliary belt roller 16b having a low coefficient of friction, only the roller having a low coefficient of friction excluding the auxiliary belt 16a is provided. It is also possible to be made to convey the long sheet (15).

또한, 본 발명의 일 실시예에서는 상기 보조벨트 롤러(16b)로 마찰계수가 낮은 롤러가 적용되어 있으나, 마찰계수가 낮은 롤러라면 그 형태와 구성에 제한받지 아니하며, 구름베어링, 기름베어링, 볼베어링, 롤러베어링, 미끄럼베어링, 슬리브베어링, 유동압 저널베어링, 유정압 저널베어링, 공기압베어링, 공기동입 베어링, 공기정압 베어링 및 에어베어링과 같은 베어링들이 포함되는 롤러가 적용되는 것도 가능하고, 플라스틱, 유화제 등의 소재 및 첨가제를 포함시켜 마찰계수를 저감시킨 롤러가 적용되는 것도 가능하다.In addition, in one embodiment of the present invention, a roller having a low friction coefficient is applied as the auxiliary belt roller 16b, but a roller having a low coefficient of friction is not limited to its shape and configuration, and rolling bearings, oil bearings, ball bearings, Rollers including bearings such as roller bearings, sliding bearings, sleeve bearings, hydraulic journal bearings, hydrostatic journal bearings, pneumatic bearings, pneumatic bearings, pneumatic bearings and air bearings can be applied, and plastics, emulsifiers, etc. It is also possible to apply a roller that reduces the coefficient of friction by including the material and additives.

한편, 본 발명에 의한 전기방사장치(1)에 두께 측정장치(70)가 구비된다. 즉, 도 1에 도시하고 있는 바와 같이, 상기 전기방사장치(1)의 각 유닛(10a, 10b) 사이에 두께 측정장치(70)가 구비되고, 상기 두께 측정장치(70)에 의해 측정된 두께에 따라 이송속도(V) 및 노즐블록(11)을 제어한다. On the other hand, the thickness measuring device 70 is provided in the electrospinning apparatus 1 according to the present invention. That is, as shown in FIG. 1, the thickness measuring device 70 is provided between the units 10a and 10b of the electrospinning device 1, and the thickness measured by the thickness measuring device 70. According to the control the feed rate (V) and the nozzle block (11).

상기한 바와 같은 구조에 의하여 상기 전기방사장치(1)의 선단에 위치한 유닛(10a)에서 토출된 나노섬유 부직포의 두께가 편차량보다 얇게 측정될 경우, 다음 유닛(10b)의 이송속도(V)를 늦게하거나, 노즐블록(11)의 토출양을 증가시키고, 전압 발생장치(14a, 14b)의 전압 세기를 조절하여 단위면적당의 나노섬유 부직포의 토출량을 증대시켜 두께를 두껍게 할 수 있다.When the thickness of the nanofiber nonwoven fabric discharged from the unit 10a positioned at the tip of the electrospinning apparatus 1 is measured to be thinner than the deviation amount, the transfer speed V of the next unit 10b is as described above. The thickness of the nanofiber nonwoven fabric per unit area may be increased by increasing the discharge amount of the nozzle block 11 or increasing the discharge amount of the nozzle block 11 and adjusting the voltage intensity of the voltage generators 14a and 14b.

또한, 상기 전기방사장치(1)의 선단에 위치한 유닛(10a)에서 토출된 나노섬유 부직포의 두께가 편차량보다 두껍게 측정될 경우, 다음 유닛(10b)의 이송속도(V)를 빠르게 하거나, 노즐블록(11)의 토출양을 작게하고, 전압 발생장치(14a, 14b) 전압의 세기를 조절하여 단위면적당의 나노섬유 부직포의 토출량을 작게하여 적층량을 줄임으로써 두께를 얇게 할 수 있으며, 이로 인해 균일한 두께를 갖는 나노섬유 부직포를 제조할 수 있다.In addition, when the thickness of the nanofiber nonwoven fabric discharged from the unit 10a positioned at the tip of the electrospinning apparatus 1 is measured to be thicker than the deviation amount, the feed rate V of the next unit 10b is increased or the nozzle is increased. By reducing the discharge amount of the block 11 and controlling the intensity of the voltage of the voltage generators 14a and 14b, the discharge amount of the nanofiber nonwoven fabric per unit area can be reduced to reduce the stacking amount, thereby reducing the thickness. Nanofiber nonwoven fabrics having a uniform thickness can be prepared.

여기서, 상기 두께 측정장치(70)는 인입 및 공급되는 장척시트(15)를 사이에 두고, 상, 하로 마주보게 배치되며, 초음파 측정방식에 의해 상기 장척시트(15)의 상부 또는 하부까지의 거리를 측정하는 한 쌍의 초음파 종파 횡파 측정방식으로 이루어지는 두께측정부가 구비된다.Here, the thickness measuring device 70 is disposed to face up and down, with the long sheet 15 to be introduced and supplied therebetween, the distance to the top or bottom of the long sheet 15 by the ultrasonic measuring method. Is provided with a thickness measuring section consisting of a pair of ultrasonic longitudinal wave transverse measurement method for measuring the.

이렇게 상기 한 쌍의 초음파 측정장치에 의해 측정된 거리를 기초로 하여 상기 장척시트(15)의 두께를 산출할 수 있다. 즉, 나노섬유 부직포가 적층된 장척시트(15)에 초음파 종파와 횡파를 함께 투사하여 종파와 횡파의 각 초음파 신호가 장척시트(15)에서 왕복 이동하는 시간, 즉 종파와 횡파의 각 전파시간을 측정한 뒤, 상기 측정된 종파와 횡파의 전파시간과 나노섬유 부직포가 적층된 장척시트(15)의 기준온도에서 종파와 횡파의 전파속도, 및 종파와 횡파 전파속도의 온도상수를 이용하는 소정의 연산식으로부터 피검사체의 두께를 계산하는 초음파 종파와 횡파를 이용한 두께 측정장치(70)이다. Thus, the thickness of the long sheet 15 may be calculated based on the distance measured by the pair of ultrasonic measuring devices. That is, the ultrasonic longitudinal wave and the transverse wave are projected together on the long sheet 15 in which the nanofiber nonwoven fabric is laminated, so that each ultrasonic signal of the longitudinal wave and the transverse wave reciprocates in the long sheet 15, that is, the propagation time of the longitudinal wave and the transverse wave. After the measurement, a predetermined calculation is performed using the measured propagation time of the longitudinal wave and the transverse wave and the propagation speed of the longitudinal wave and the transverse wave and the temperature constant of the longitudinal wave and the transverse wave propagation speed at the reference temperature of the long sheet 15 in which the nanofiber nonwoven fabric is laminated. It is the thickness measuring apparatus 70 using the ultrasonic longitudinal wave and the transverse wave which calculate the thickness of a test subject from a formula.

다시 말하면, 상기 두께 측정장치(70)는 초음파의 종파와 횡파의 각 전파 시간을 측정한 뒤, 상기 측정된 종파와 횡파의 전파시간과, 장척시트(15)의 기준온도에서의 종파와 횡파의 전파속도 및 종파와 횡파 전파속도의 온도상수를 이용하는 소정의 연산식으로부터 나노섬유 부직포가 적층된 장척시트(15)의 두께를 계산함으로써, 내부온도가 분균일한 상태에서도 온도 변화에 따른 전파속도의 변화에 의한 오차를 자체 보상하여 두께를 정밀하게 측정할 수 있고, 나노섬유 부직포 내부에 어떤 형태의 온도 분포가 존재하더라도 정밀한 두께의 측정이 가능하다.In other words, the thickness measuring device 70 measures the propagation time of the longitudinal wave and the transverse wave of the ultrasonic wave, and then measures the propagation time of the measured longitudinal wave and the transverse wave and the longitudinal wave and the transverse wave at the reference temperature of the long sheet 15. By calculating the thickness of the long sheet 15 in which the nanofiber nonwoven fabric is laminated from a predetermined equation using the propagation speed and the temperature constants of the longitudinal wave and the transverse wave propagation speed, the propagation speed according to the temperature change even when the internal temperature is uniform. The thickness compensation can be precisely measured by self-compensation of the error caused by the change, and the precise thickness can be measured regardless of any type of temperature distribution inside the nanofiber nonwoven fabric.

한편, 본 발명에 의한 전기방사장치(1)에 고분자 방사용액이 분사되어 적층된 후 이송되는 장척시트(15)의 나노섬유 부직포 두께를 측정하여 장척시트(15)의 이송속도 및 노즐블록(11)을 제어하는 두께 측정장치(70)가 구비되어 있으나, 상기 전기방사장치(1)에 장척시트(15)의 이송속도를 조절하기 위한 장척시트 이송속도 조절장치(30)가 더 구비된다.On the other hand, by measuring the nanofiber nonwoven fabric thickness of the long sheet 15 to be transported after the polymer spinning solution is sprayed and laminated to the electrospinning apparatus 1 according to the present invention, the feed rate and the nozzle block 11 of the long sheet 15 Although the thickness measuring device 70 for controlling) is provided, the long sheet feeding speed adjusting device 30 for adjusting the feeding speed of the long sheet 15 is further provided in the electrospinning apparatus 1.

여기서, 상기 장척시트 이송속도 조절장치(30)는 상기 전기방사장치(1)의 각 유닛(10a, 10b) 사이에 형성되는 완충구간(31)과 상기 완충구간(31) 상에 구비되어 장척시트(15)를 지지하는 한 쌍의 지지롤러(33, 33') 및 상기 한 쌍의 지지롤러(33, 33') 사이에 구비되는 조절롤러(35)를 포함하여 구성된다.Here, the long sheet conveying speed adjusting device 30 is provided on the buffer section 31 and the buffer section 31 formed between each unit (10a, 10b) of the electrospinning device 1 is a long sheet It comprises a pair of support rollers (33, 33 ') for supporting the (15) and an adjusting roller 35 provided between the pair of support rollers (33, 33').

이때, 상기 지지롤러(33, 33')는 상기 각 유닛(10a, 10b) 내에서 노즐(12)이 분사하는 방사용액에 의해 나노섬유 부직포가 적층형성되는 장척시트(15)의 이송 시 상기 장척시트(15)의 이송을 지지하기 위한 것으로서, 상기 각 유닛(10a, 10b) 사이에 형성되는 완충구간(31)의 선, 후단에 각각 구비된다.At this time, the support rollers 33 and 33 'are long when the long sheet 15 is formed in which the nanofiber nonwoven fabric is laminated by the spinning solution sprayed by the nozzle 12 in each of the units 10a and 10b. It is for supporting the conveyance of the sheet | seat 15, and is provided in the line and the rear end of the buffer section 31 formed between each said unit 10a, 10b, respectively.

그리고, 상기 조절롤러(35)는 상기 한 쌍의 지지롤러(33, 33') 사이에 구비되되, 상기 장척시트(15)가 권취되고, 상기 조절롤러(35)의 상, 하 이동에 의해 상기 각 유닛(10a, 10b)별 장척시트(15a, 15b)의 이송속도 및 이동시간이 조절된다.And, the adjustment roller 35 is provided between the pair of support rollers (33, 33 '), the elongated sheet (15) is wound, by the up and down movement of the adjustment roller 35 The feed speed and travel time of the long sheets 15a and 15b for each unit 10a and 10b are adjusted.

이를 위하여 상기 각 유닛(10a, 10b) 내 장척시트(15a, 15b)의 이송속도를 감지하기 위한 감지센서(미도시)가 구비되고, 상기 감지센서에 의해 감지된 각 유닛(10a, 10b) 내 장척시트(15a, 15b)의 이송속도에 따라 조절롤러(35)의 이동을 제어하기 위한 주 제어장치(7)가 구비된다.To this end, a sensing sensor (not shown) is provided for sensing the conveying speed of the long sheets 15a and 15b in each of the units 10a and 10b, and in each unit 10a and 10b detected by the sensing sensor. The main control unit 7 is provided for controlling the movement of the adjustment roller 35 in accordance with the feeding speed of the long sheet 15a, 15b.

본 발명의 일 실시예에서는 상기 각 유닛(10a, 10b) 내에서 장척시트(15a, 15b)의 이송속도를 감지하고, 감지된 장척시트(15a, 15b)의 이송속도에 따라 제어부가 조절롤러(35)의 이동을 제어하는 구성으로 이루어져 있으나, 상기 장척시트(15a, 15b)를 이송시키기 위해 컬렉터(13)의 외측에 구비되는 보조벨트(16a) 또는 상기 보조벨트(16a)를 구동시키는 보조벨트 롤러(16b) 또는 모터(미도시)의 구동속도를 감지하고, 이에 따라 제어부가 조절롤러(35)의 이동을 제어하는 구성으로 이루어지는 것도 가능하다.In one embodiment of the present invention, the sensing speed of the long sheet (15a, 15b) in each of the units (10a, 10b), and the controller according to the feed rate of the detected long sheet (15a, 15b) control roller ( 35 is configured to control the movement, but the auxiliary belt 16a or the auxiliary belt for driving the auxiliary belt 16a provided on the outside of the collector 13 to transfer the long sheet (15a, 15b). The driving speed of the roller 16b or the motor (not shown) may be sensed, and accordingly, the controller may be configured to control the movement of the adjustment roller 35.

상기한 바와 같은 구조에 의하여 상기 감지센서가 각 유닛(10a, 10b) 중 선단에 위치하는 유닛(10a) 내 장척시트(15a)의 이송속도가 그 후단에 위치하는 유닛(10b) 내 장척시트(15b)의 이송속도보다 빠르다고 감지할 경우, 도 5 내지 도 6에서 도시하고 있는 바와 같이, 선단에 위치하는 유닛(10a) 내에서 이송되는 장척시트(15a)가 처지는 것을 방지하기 위하여 상기 한 쌍의 지지롤러(33, 33') 사이에 구비되되, 장척시트(15)가 권취되는 조절롤러(35)를 하측으로 이동하면서 선단에 위치하는 유닛(10a) 내에서 그 후단에 위치하는 유닛(10b)으로 이송되는 장척시트(15) 중 선단에서 위치하는 유닛(10a) 외부로 이송되어 각 유닛(10a, 10b) 사이에 위치하는 완충구간(31)으로 과다하게 이송되는 장척시트(15a)를 당겨 선단에 위치하는 유닛(10a) 내 장척시트(15a)의 이송속도와 그 후단에 위치하는 유닛(10b) 내 장척시트(15b)의 이송속도가 동일해지도록 보정제어하면서 장척시트(15a)의 처짐 및 구겨짐을 방지한다.According to the structure as described above, the long sheet in the unit 10b in which the feed rate of the long sheet 15a in the unit 10a in which the sensing sensor is positioned at the front end of each unit 10a or 10b is located in the rear end thereof. In the case of detecting that the feed rate is higher than 15b), as shown in FIGS. 5 to 6, the pair of long sheets 15a conveyed in the unit 10a positioned at the front end may be prevented from sagging. A unit 10b disposed between the supporting rollers 33 and 33 'and positioned at the rear end of the unit 10a positioned at the front end while moving the adjusting roller 35 on which the long sheet 15 is wound downward. The tip of the long sheet 15a, which is conveyed to the outside of the unit 10a positioned at the front end and is excessively transferred to the buffer section 31 positioned between the units 10a and 10b, is pulled out by Of the long sheet 15a in the unit 10a located at And the positioning unit (10b) so that the same correction of the feed rate in a long sheet (15b) to control and prevent sagging and wrinkling of the elongated sheet (15a).

한편, 상기 감지센서가 각 유닛(10a, 10b) 중 선단에 위치하는 유닛(10a) 내 장척시트(15a)의 이송속도가 그 후단에 위치하는 유닛(10b) 내 장척시트(15b)의 이송속도보다 느리다고 감지할 경우, 도 7내지 도 8에서 도시하고 있는 바와 같이, 후단에 위치하는 유닛(10b) 내에서 이송되는 장척시트(15b)가 찢어지는 것을 방지하기 위하여 상기 한 쌍의 지지롤러(33, 33') 사이에 구비되되, 장척시트(15)가 권취되는 조절롤러(35)를 상측으로 이동하면서 선단에 위치하는 유닛(10a) 내에서 그 후단부에 위치하는 유닛(10b)으로 이송되는 장척시트(15) 중 선단에서 위치하는 유닛(10a) 외부로 이송되어 각 유닛(10a, 10b) 사이에 위치하는 완충구간(31)에 조절롤러(35)에 의해 권취되어 있는 장척시트(15a)를 후단에 위치하는 유닛(10b)에 빠르게 공급하여 선단에 위치하는 유닛(10a) 내 장척시트(15a)의 이송속도와 그 후단에 위치하는 유닛(10b) 내 장척시트(15b)의 이송속도가 동일해지도록 보정제어하면서 장척시트(15b)의 끊어짐을 방지한다.On the other hand, the feed rate of the long sheet 15b in the unit 10b in which the sensing sensor is located at the front end of the unit 10a in which the sensing sensor is located at the front end of each of the units 10a and 10b. If it is detected that the slower, as shown in Figs. 7 to 8, the pair of support rollers 33 to prevent the long sheet 15b conveyed in the unit 10b positioned at the rear end thereof from being torn. 33 '), which is conveyed to the unit 10b positioned at the rear end of the unit 10a positioned at the front end while moving the adjusting roller 35 to which the long sheet 15 is wound upward. The long sheet 15a, which is transferred to the outside of the unit 10a positioned at the tip of the long sheet 15 and is wound by the adjusting roller 35 in the buffer section 31 positioned between the units 10a and 10b. Is supplied to the unit 10b located at the rear end quickly, so that the long inside the unit 10a located at the front end The feed rate of the root (15a) unit (10b) within the elongated sheet (15b) which is located in the transfer speed and the rear end of the year, while the correction control such that the same prevents the dead of the elongated sheet (15b).

상기한 바와 같은 구조에 의하여 상기 각 유닛(10a, 10b) 중 후단에 위치하는 유닛(10b) 내로 이송되는 장척시트(15b)의 이송속도를 조절함으로써 상기 각 유닛(10a, 10b) 중 후단에 위치하는 유닛(10b) 내의 장척시트(15b) 이송속도가 그 선단에 위치하는 유닛(10a) 내의 장척시트(15a) 이송속도와 동일해지는 효과를 얻을 수 있다.Positioned at the rear end of each unit 10a, 10b by adjusting the conveying speed of the long sheet 15b conveyed into the unit 10b located at the rear end of each unit (10a, 10b) by the structure as described above It is possible to obtain the effect that the feed rate of the long sheet 15b in the unit 10b is equal to the feed rate of the long sheet 15a in the unit 10a positioned at its tip.

한편, 본 발명에 의한 전기방사장치(1)의 중간부에 플립장치(110)가 구비된다. 즉, 상기 전기방사장치(1)의 선단에 위치하는 유닛(10a)과 후단에 위치하는 유닛(10b) 사이에 장척시트(15)를 회전시키기 위한 플립장치(110)가 구비된다.On the other hand, the flip device 110 is provided in the middle of the electrospinning apparatus 1 according to the present invention. That is, a flip device 110 for rotating the long sheet 15 is provided between the unit 10a located at the front end of the electrospinning device 1 and the unit 10b located at the rear end.

여기서, 상기 플립장치(110)는 원통형상으로 형성되되, 그 중심부에서 수평방향으로 양 측 내주연에 상기 장척시트(15)의 양 단부가 삽입되어 가이드되면서 이송되기 위한 가이드홈(112, 112')을 갖는 가이드편(111, 111')이 각각 내향되게 돌출형성된다.Here, the flip device 110 is formed in a cylindrical shape, the guide grooves 112 and 112 'for being transported while being inserted at both ends of the elongated sheet 15 at both ends of the inner circumference in the horizontal direction at the center thereof. The guide pieces 111 and 111 'each of which is formed in Fig. 1 are protruded inwardly.

이때, 상기 플립장치(110)의 내주연에 돌출형성되는 가이드편(111, 111') 중 어느 한 가이드편(111)은 내주연을 따라 상방향으로 연장형성되고, 다른 한 가이드편(111')은 내주연을 따라 하방향으로 연장형성되는 등 상기 각 가이드편(111, 111')이 플립장치의 내주연을 따라 나선형으로 연장형성됨으로써 가이드편(111, 111'')의 가이드홈(112, 112')으로 삽입되는 장척시트가 가이드편(111, 111')의 가이드홈(112, 112')에 가이드되면서 180°로 회전하게 된다.At this time, any one of the guide pieces 111, 111, 111 'protruding from the inner circumference of the flip device 110 is formed to extend upward along the inner circumference, the other guide piece 111' ) Is formed in the downward direction along the inner circumference such that each guide piece (111, 111 ') is formed spirally extending along the inner circumference of the flip device, so that the guide groove 112 of the guide piece (111, 111' ') , 112 ') is inserted into the guide grooves 112 and 112' of the guide pieces 111 and 111 'to be rotated by 180 °.

상기한 바와 같은 구조에 의하여 보조벨트(16a) 및 보조벨트 롤러(16b)로 이루어지는 보조 이송장치(16)에 의해 상기 각 유닛(10a, 10b) 중 선단에 위치하는 유닛(10a)으로 공급된 후 그 하부면에 고분자 방사용액이 방사되어 적층된 장척시트(15)가 플립장치(110)를 통과하면서 그 하부면이 상부에 위치됨과 동시에 상부면이 하부에 위치되도록 180°회전하고, 회전된 장척시트(15)가 후단에 위치하는 유닛(10b)으로 공급된 후 다시 그 하부면에 고분자 방사용액이 방사되는 등 전기방사를 위한 노즐블록(11) 및 노즐(12)을 포함하는 유닛(10a, 10b)의 상, 하 위치변경 없이 장척시트(15)의 하부면 및 상부면에 고분자 방사용액을 전기방사할 수 있다.After being supplied to the unit 10a positioned at the front end of each of the units 10a and 10b by the auxiliary conveying device 16 including the auxiliary belt 16a and the auxiliary belt roller 16b according to the structure as described above. The long elongated sheet 15 laminated with the polymer spinning solution radiated on the lower surface passes through the flip device 110 and rotates 180 ° such that the lower surface is positioned at the top and the upper surface is positioned at the bottom. A unit 10a including a nozzle block 11 and a nozzle 12 for electrospinning such that the sheet 15 is supplied to the unit 10b positioned at the rear end, and then the polymer spinning solution is radiated to the lower surface thereof. It is possible to electrospin the polymer spinning solution on the lower and upper surfaces of the long sheet 15 without changing the upper and lower positions of 10b).

여기서, 상기 플립장치(110)에 열풍기 또는 전열기 등의 건조장치(미도시)가 연설되어 플립장치(110)를 통한 장척시트(15)의 회전 시 상기 장척시트(15)를 건조시키도록 이루어지는 것도 바람직하다.Here, a drying device (not shown) such as a hot air fan or an electric heater is provided to the flip device 110 to dry the long sheet 15 when the long sheet 15 is rotated through the flip device 110. desirable.

한편, 본 발명에 의한 전기방사장치(1)에 통기도 계측장치(80)가 구비된다. 즉, 상기 전기방사장치(1)의 각 유닛(10a, 10b) 중 후단에 위치하는 유닛(10b)의 후방에 전기방사장치(1)를 통하여 제조된 나노섬유 부직포의 통기도를 측정하기 위한 통기도 계측장치(80)가 구비된다.On the other hand, the air permeability measuring device 80 is provided in the electrospinning apparatus 1 of the present invention. That is, the air permeability measurement for measuring the air permeability of the nanofiber nonwoven fabric produced through the electrospinning device 1 in the rear of the unit (10b) located at the rear end of each unit (10a, 10b) of the electrospinning device (1) Apparatus 80 is provided.

상기한 바와 같이, 상기 통기도 계측장치(80)를 통하여 측정된 나노섬유 부직포의 통기도를 기초로 하여 장척시트(15)의 이송속도 및 노즐블록(11)을 제어한다.As described above, the ventilation rate of the long sheet 15 and the nozzle block 11 are controlled based on the ventilation rate of the nanofiber nonwoven fabric measured by the air permeability measuring device 80.

이렇게 상기 전기방사장치(1)의 각 유닛(10a, 10b)을 통하여 토출된 나노섬유 부직포의 통기도가 크게 계측될 경우, 각 유닛(10a, 10b)의 이송속도(V)를 늦게하거나, 노즐블록(11)의 토출양을 증가시키고, 전압 발생장치(14a, 14b)의 전압의 세기를 조절하여 단위면적당의 나노섬유의 토출량을 증대시켜 통기도를 작게 형성한다.When the air permeability of the nanofiber nonwoven fabric discharged through the units 10a and 10b of the electrospinning apparatus 1 is largely measured, the feed rate V of each unit 10a or 10b is slowed, or the nozzle block The discharge amount of (11) is increased, and the discharge amount of the nanofibers per unit area is increased by adjusting the intensity of the voltage of the voltage generators 14a and 14b to form a small air permeability.

그리고, 상기 전기방사장치(1)의 각 유닛(10a, 10b)을 통하여 토출된 나노섬유 부직포의 통기도가 작게 계측될 경우, 각 유닛(10a, 10b)의 이송속도(V)를 빠르게 하거나, 노즐블록(11)의 토출양을 감소시키고, 전압 발생장치(14a, 14b)의 전압의 세기를 조절하여 단위면적당의 나노 섬유의 토출량을 감소시켜 적층량을 줄이게 함으로서 통기도를 크게 형성한다.When the air permeability of the nanofiber nonwoven fabric discharged through the units 10a and 10b of the electrospinning apparatus 1 is measured to be small, the feed rate V of the units 10a and 10b is increased or the nozzle is increased. By reducing the discharge amount of the block 11, and controlling the intensity of the voltage of the voltage generators (14a, 14b) to reduce the discharge amount of the nanofiber per unit area to reduce the stacking amount to increase the air permeability.

상기한 바와 같이, 상기 나노섬유 부직포의 통기도를 계측한 후 통기도에 따라 각 유닛(10a, 10b)의 이송속도 및 노즐블록(11)을 제어함으로써 균일한 통기도를 갖는 나노섬유 부직포의 제조가 가능하다.As described above, by measuring the air permeability of the nanofiber nonwoven fabric, it is possible to manufacture a nanofiber nonwoven fabric having a uniform air permeability by controlling the feed rate and nozzle block 11 of each unit (10a, 10b) according to the air permeability. .

여기서, 상기 나노섬유 부직포의 통기도 편차량(P)이 소정의 값 미만인 경우에는 이송속도(V)를 초기 값으로부터 변화시키지 않고, 상기 편차량(P)이 소정값 이상인 경우에는 이송속도(V)를 초기 값으로부터 변화시키도록 제어하는 것도 가능하기 때문에, 이송속도(V) 제어장치에 의한 이송속도(V)의 제어를 단순화하는 것이 가능해진다. Here, when the air permeability deviation amount (P) of the nanofiber nonwoven fabric is less than a predetermined value, the feed rate (V) is not changed from the initial value, and when the deviation amount (P) is equal to or more than the predetermined value, the feed rate (V) Since it is also possible to control to change from the initial value, it becomes possible to simplify the control of the feed rate V by the feed rate V controller.

또한, 이송속도(V)의 제어 외에도 노즐블록(11)의 토출양 및 전압의 세기 조절이 가능하여 통기도 편차량(P)이 소정의 값 미만인 경우에는 노즐블록(11)의 토출양과 전압의 세기를 초기 값으로부터 변화시키지 않고, 상기 편차량(P)이 소정의 값 이상인 경우에는 노즐블록(11)의 토출양과 전압의 세기를 초기 값으로부터 변화시키도록 제어하여 노즐블록(11)의 토출양과 전압의 세기의 제어를 단순화할 수 있다.In addition, the discharge amount and the intensity of the voltage of the nozzle block 11 can be adjusted in addition to the control of the feed rate V. When the air permeability deviation amount P is less than the predetermined value, the discharge amount and the intensity of the voltage of the nozzle block 11 are controlled. Is not changed from the initial value, and when the deviation amount P is equal to or larger than a predetermined value, the discharge amount and voltage of the nozzle block 11 are controlled to change the intensity of the discharge amount and voltage of the nozzle block 11 from the initial value. The control of the intensity of the can be simplified.

여기서, 상기 전기방사장치(1)에는 주 제어장치(7)가 구비되되, 상기 주 제어장치(7)는 노즐블록(11)과 전압 발생장치(14a, 14b)와 두께 측정장치(70)와 장척시트 이송속도 조절장치(30) 및 통기도 계측장치(80)를 제어한다.Here, the electrospinning apparatus (1) is provided with a main control device (7), the main control device (7) is a nozzle block 11, voltage generators (14a, 14b) and thickness measuring device (70) and The long sheet feed rate adjusting device 30 and the ventilation device also controls the measuring device 80.

한편, 상기 전기방사장치(1)의 각 유닛(10a, 10b)을 통하여 전기방사된 나노섬유 부직포를 라미네이팅하기 위한 라미네이팅 장치(90)가 상기 각 유닛(10a, 10b) 중 후단에 위치하는 유닛(10b)의 후방에 구비되고, 상기 라미네이팅 장치(90)에 의해 전기방사장치(1)를 통하여 전기방사된 나노섬유 부직포의 후공정을 수행한다.On the other hand, the laminating device 90 for laminating the nanofiber nonwoven fabric electrospun through each unit (10a, 10b) of the electrospinning apparatus 1 is located in the rear end of the unit (10a, 10b) 10b) is provided at the rear, and performs the post-processing of the nanofiber nonwoven fabric electrospun through the electrospinning apparatus 1 by the laminating apparatus 90.

이하, 상기 전기방사장치를 이용하여 본 발명의 셀룰로오스 기재 양면에 폴리비닐리덴 플루오라이드 나노섬유를 포함하는 필터의 제조방법을 설명한다.Hereinafter, a method for producing a filter including polyvinylidene fluoride nanofibers on both surfaces of the cellulose substrate of the present invention using the electrospinning value will be described.

본 발명에서는 고분자 방사용액으로 폴리비닐리덴 플루오라이드 용액을 사용하며, 장척시트(15)로 셀룰로오스 기재를 사용한다. 본 발명에서 사용하는 셀룰로오스 기재는 고온에서의 치수 안정성이 우수하고, 내열성이 높은 특징이 있다. 셀룰로오스 섬유는 미세한 다공 구조를 형성하고 있다는 점에서 고결정성, 고탄성률을 가지며, 본질적으로 고온에서의 치수 안정성이 매우 우수한 섬유이다. 이러한 특징에 의한 셀룰로오스 기재는 고성능 필터, 기능지, 요리용 시트나 흡취성 시트 등의 생활 제품, 반도체 장치나 배선 기판용 기판, 낮은 선팽창률 재료의 기재, 캐패시터와 같은 축전장치용 세퍼레이터 등의 기술분야에 사용되고 있다.In the present invention, a polyvinylidene fluoride solution is used as the polymer spinning solution, and a cellulose substrate is used as the long sheet 15. The cellulose base material used by this invention is excellent in dimensional stability at high temperature, and has the characteristic of high heat resistance. Cellulose fibers have high crystallinity, high modulus of elasticity in terms of forming a fine porous structure, and are inherently excellent in dimensional stability at high temperatures. Cellulose substrates based on these characteristics include high-performance filters, functional papers, household products such as cooking sheets and absorbent sheets, substrates for semiconductor devices and wiring boards, substrates of low linear expansion coefficient materials, and capacitors for power storage devices such as capacitors. It is used in the field.

본 발명에 사용되는 상기 셀룰로오스 기재는 총 질량비가 100% 셀룰로오스로 이루어진 것을 사용하는 것이 바람직하나, 총 질량 대비 셀룰로오스와 폴리에틸렌테레프탈레이트(PET)가 70~90 : 10~30의 질량% 비율로 구성된 셀룰로오스 기재를 사용하는 것도 가능하며, 셀룰로오스 기재가 방염코팅된 것을 사용하는 것도 가능하다. The cellulose substrate used in the present invention is preferably used in that the total mass ratio is made of 100% cellulose, but the cellulose and polyethylene terephthalate (PET) relative to the total mass of 70 to 90: 10 to 30% by mass ratio of cellulose It is also possible to use a base material, and to use a flame retardant coating of the cellulose base material.

먼저, 폴리비닐리덴 플루오라이드를 유기 용매에 녹인 폴리비닐리덴 플루오라이드 용액은 전기방사장치의 각 유닛(10a, 10b)과 연결된 방사용액 주탱크(8)에 공급되고, 상기 방사용액 주탱크(8)에 공급된 폴리비닐리덴 플루오라이드 용액은 계량 펌프(미도시)를 통하여 높은 전압이 부여되는 노즐블록(11)의 다수의 노즐(12) 내에 연속적으로 정량공급된다. 상기 각 노즐(12)로부터 공급된 폴리비닐리덴 플루오라이드 용액은 노즐(12)을 통해 높은 전압이 걸려있는 컬렉터(13) 상에 위치한 셀룰로오스 기재의 일측면에 전기방사 및 집속되고, 각 유닛(10a, 10b)에서는 각각 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 여기서 전기방사장치(1)의 전단부에 위치한 제1 유닛(10a)에서는 상기 폴리비닐리덴 플루오라이드 용액이 전기방사되어 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 형성되고, 그 후단부에 위치하는 제2 유닛(10b)에서는 상기 폴리비닐리덴 플루오라이드 용액이 전기방사되어 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 형성된다.First, the polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in an organic solvent is supplied to the spinning solution main tank 8 connected to each unit 10a, 10b of the electrospinning apparatus, and the spinning solution main tank 8 The polyvinylidene fluoride solution supplied to) is continuously metered into the plurality of nozzles 12 of the nozzle block 11 to which a high voltage is applied through a metering pump (not shown). The polyvinylidene fluoride solution supplied from each nozzle 12 is electrospun and focused on one side of the cellulose substrate located on the collector 13 subjected to the high voltage through the nozzle 12, and each unit 10a In 10b), polyvinylidene fluoride nanofiber nonwoven fabrics are laminated. The polyvinylidene fluoride solution is electrospun in the first unit 10a located at the front end of the electrospinning apparatus 1 to form a first polyvinylidene fluoride nanofiber nonwoven fabric, which is located at the rear end thereof. In the second unit 10b, the polyvinylidene fluoride solution is electrospun to form a second polyvinylidene fluoride nanofiber nonwoven fabric.

여기서, 상기 전기방사장치(1)의 제1 유닛(10a)과 제2 유닛(10b) 사이에 구비되는 플립장치(110)에 의해 상기 제1 유닛(10a)을 통과한 직물의 상,하가 180° 회전된다. 즉, 제1 유닛(10a)을 통과한 후 상기 셀룰로오스 기재와 이에 적층형성된 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이루어진 직물이 플립장치(110)에 공급되며, 상기 플립장치(110)에서는 상기 직물의 상부면은 하부면으로 위치가 변경되고, 상기 직물의 하부면은 상부면으로 위치가 변경되도록 직물의 상,하가 180°로 회전된다. 다시 말해, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면이 상기 전기방사장치(1)의 노즐블록(11)을 향하도록 직물의 상,하가 180° 회전된다. 이후 제2 유닛(10b)에서 이에 연결된 방사용액 주탱크(8)로부터 공급된 폴리비닐리덴 플루오라이드 용액은 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면에 전기방사되어 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. Here, the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 °. That is, after passing through the first unit 10a, a fabric made of the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated thereon is supplied to the flip device 110, and the flip device 110 The upper surface of the fabric is changed in position to the lower surface, the lower surface of the fabric is rotated up and down 180 ° so that the position is changed to the upper surface. In other words, the top and bottom of the fabric is rotated 180 ° so that the other side of the cellulose substrate, on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated, faces the nozzle block 11 of the electrospinning apparatus 1. do. Then, the polyvinylidene fluoride solution supplied from the spinning solution main tank 8 connected thereto in the second unit 10b is electrically connected to the other side of the cellulose substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. Spun to form a second polyvinylidene fluoride nanofiber nonwoven fabric.

여기서 상기 셀룰로오스 기재는 모터(미도시)의 구동에 의해 동작하는 공급롤러(3) 및 상기 공급롤러(3)의 회전에 의해 구동하는 보조이송장치(16)의 회전에 의해 제1 유닛(10a)에서 플립장치(110)를 통과하여 제2 유닛(10b)으로 이송되고 상기한 공정을 반복하면서 상기 셀룰로오스 기재의 양면에 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 연속적인 전기방사 공정에 의해 적층형성된다.Here, the cellulose base material is the first unit 10a by the rotation of the feed roller 3 which is operated by the driving of a motor (not shown) and the auxiliary feeder 16 which is driven by the rotation of the feed roller 3. In the first and second polyvinylidene fluoride nanofiber nonwoven fabric on both sides of the cellulose substrate while passing through the flip device 110 to the second unit 10b and repeating the above process in a continuous electrospinning process By lamination.

한편, 상기 방사용액 주탱크(8)에 공급되는 방사용액은 본 발명에서는 폴리비닐리덴 플루오라이드를 유기 용매에 녹인 폴리비닐리덴 플루오라이드 용액을 사용하였으나, 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액을 사용하는 것이 가능하다. 또한 폴리비닐리덴 플루오라이드 용액과 핫멜트 용액을 각 유닛마다 다르게 구비하여 사용하는 것도 가능하다. 예를 들면, 4개의 유닛으로 구성된 전기방사장치의 중간에 플립장치가 구비된 경우, 제1 유닛 및 제3 유닛에서는 핫멜트 용액이 전기방사되고, 제2 유닛 및 제4 유닛에서는 폴리비닐리덴 플루오라이드 용액이 방사되는 것이 가능하다. 또한, 2개의 유닛으로 구성된 전기방사장치의 중간에 플립장치가 구비된 경우, 전기방사장치의 제1 유닛에서는 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액이 방사되고, 제2 유닛에서는 폴리비닐리덴 플루오라이드 용액이 방사되는 것도 가능하다. 여기서, 상기 핫멜트는 폴리비닐리덴 플루오라이드계이며, 상기 핫멜트는 폴리비닐리덴 플루오라이드 나노섬유 부직포와 셀룰로오스 기재 사이에 접착제의 역할을 함으로, 나노섬유 부직포와 기재가 떨어지는 것을 방지한다.Meanwhile, in the present invention, the spinning solution supplied to the spinning solution main tank 8 uses a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in an organic solvent, but a solution in which polyvinylidene fluoride and hot melt are mixed. It is possible to use It is also possible to use polyvinylidene fluoride solution and hot melt solution differently provided for each unit. For example, when a flip device is provided in the middle of an electrospinning device consisting of four units, the hot melt solution is electrospun in the first unit and the third unit, and polyvinylidene fluoride in the second unit and the fourth unit. It is possible for the solution to be spun. In addition, when a flip device is provided in the middle of an electrospinning device composed of two units, a solution in which polyvinylidene fluoride and a hot melt are spun in the first unit of the electrospinning device, and polyvinylidene in the second unit It is also possible for the fluoride solution to be spun. Here, the hot melt is a polyvinylidene fluoride-based, the hot melt serves as an adhesive between the polyvinylidene fluoride nanofiber nonwoven fabric and the cellulose substrate, thereby preventing the nanofiber nonwoven fabric and the substrate from falling.

또한, 상기 폴리비닐리덴 플루오라이드 용액을 셀룰로오스 기재 상에 전기방사하여 적층형성하는 과정에서, 전기방사장치의 각 유닛(10a, 10b)마다 방사 조건을 달리하여 제1 유닛(10a)에서는 섬유직경이 큰 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하고, 제2 유닛(10b)에서는 섬유직경이 작은 폴리비닐리덴 플루오라이드 나노섬유 부직포를 연속적으로 적층형성하는 것도 가능하다. In addition, in the process of laminating the polyvinylidene fluoride solution on the cellulose substrate to form a laminate, the fiber diameter is changed in the first unit 10a by varying the spinning conditions for each unit 10a, 10b of the electrospinning apparatus. It is also possible to laminate a large polyvinylidene fluoride nanofiber nonwoven fabric and to continuously laminate the polyvinylidene fluoride nanofiber nonwoven fabric having a small fiber diameter in the second unit 10b.

이는 상기 제1 유닛(10a)에 전압을 공급하는 전압 발생장치(14a)에 방사전압을 낮게 부여하여 섬유직경이 150 내지 300nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 셀룰로오스 기재의 일측면에 적층형성하고, 플립장치를 통과하여 직물의 상, 하를 180° 회전한다. 뒤이어 제2 유닛(10b)에 전압을 공급하는 전압 발생장치(14b)에 방사전압을 높게 부여하여 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면에 적층형성한다. 여기서 상기 각 전압 발생장치(14a, 14b)에 부여되는 방사전압은 1kV 이상, 바람직하게 15kV 이상이며, 제1 유닛(10a)의 전압발생장치(14a)가 부여하는 전압이 제2 유닛(10b)의 전압 발생장치(14b)가 부여하는 전압보다 낮은 것을 특징으로 한다.This gives a low radiation voltage to the voltage generator 14a for supplying the voltage to the first unit 10a so that a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 300 nm is formed on one side of the cellulose substrate. The laminate is formed and rotated 180 ° above and below the fabric through the flip device. Subsequently, the second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is applied to the voltage generator 14b for supplying the voltage to the second unit 10b to give the first polyvinylidene fluorine. Laminated nanofiber nonwoven fabric is laminated on the other side of the cellulose substrate is not laminated. Here, the radiation voltage applied to each of the voltage generators 14a and 14b is 1 kV or more, preferably 15 kV or more, and the voltage applied by the voltage generator 14a of the first unit 10a is the second unit 10b. It is characterized in that it is lower than the voltage given by the voltage generator 14b.

본 발명에서는 상기 전기방사장치(1)의 제1 유닛(10a)의 전압을 낮게 부여하여 섬유직경이 150 내지 300nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 셀룰로오스 기재의 일측면에 적층형성하고, 제2 유닛(10b)의 전압은 높게 부여하여 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 상기 셀룰로오스 기재의 타측면에 적층형성함으로 필터를 제조하는 것이 가능하다. 그러나, 전압의 세기를 달리하여 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 제1 유닛(10a)에서 방사 및 적층형성되고, 섬유직경이 150 내지 300nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 제2 유닛(10b)에서 방사되는 경우도 가능하다.In the present invention, by lowering the voltage of the first unit (10a) of the electrospinning apparatus 1, the first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 300nm is laminated on one side of the cellulose substrate, By applying a high voltage to the second unit 10b, the second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm may be laminated on the other side of the cellulose substrate, thereby producing a filter. However, by varying the intensity of the voltage, the second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is spun and laminated in the first unit 10a, and the first polyvinyl having a fiber diameter of 150 to 300 nm. It is also possible if the lidene fluoride nanofiber nonwoven is spun from the second unit 10b.

또한, 상기 전기방사장치(1)의 유닛의 개수를 3개 이상으로 구성하고 각 유닛마다 전압을 달리하여 섬유직경이 다른 3개 이상의 폴리비닐리덴 플루오라이드 나노섬유 부직포를 셀룰로오스 기재의 양면에 적층형성시킨 필터를 제조하는 것도 가능하다. In addition, the number of units of the electrospinning apparatus 1 is composed of three or more, and the voltage is varied for each unit so that three or more polyvinylidene fluoride nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the cellulose substrate. It is also possible to produce a filter.

본 발명의 일 실시예에서는 폴리비닐리덴 플루오라이드 나노섬유 부직포의 섬유직경구배를 부여하기 위해 각 유닛(10a, 10b)마다 부여하는 전압의 세기를 달리하는 방식을 사용하였으나, 노즐(12)과 컬렉터(13) 사이 간격을 조절하여 섬유직경의 구배가 있는 나노섬유 부직포를 형성할 수 있다. 이 경우, 방사용액의 종류 및 공급되는 전압 세기가 동일할 때, 방사거리가 가까울수록 섬유직경은 커지고, 방사거리가 멀수록 섬유직경은 작아지는 원리에 따라 섬유직경 구배가 부여된 나노섬유 부직포가 형성되는 것도 가능하다. 그리고, 방사용액의 농도 및 점도를 조절하거나, 장척시트의 이동속도를 조절함으로 섬유직경의 구배를 두는 것도 가능하다. In an embodiment of the present invention, in order to give a fiber diameter gradient of the polyvinylidene fluoride nanofiber nonwoven fabric, a method of varying the intensity of voltage applied to each unit 10a and 10b is used, but the nozzle 12 and the collector are used. By adjusting the spacing between (13) it can be formed a nanofiber nonwoven fabric having a gradient of fiber diameter. In this case, when the type of spinning solution and the voltage intensity supplied are the same, the closer the spinning distance, the larger the fiber diameter, and the longer the spinning distance, the smaller the fiber diameter. It is also possible to form. In addition, by adjusting the concentration and viscosity of the spinning solution, or by adjusting the moving speed of the elongated sheet it is possible to place a gradient of the fiber diameter.

상기와 같은 방법으로 전기방사장치(1)의 제1 유닛(10a)에서 셀룰로오스 기재의 일측면에 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되고, 상기 셀룰로오스 기재와 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이루어진 직물이 플립장치(110)를 통과하면서 직물의 상하가 180° 회전된 후, 제2 유닛(10b)에서 상기 셀룰로오스 기재의 타측면에 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 상기 셀룰로오스 기재의 양면에 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유가 각각 적층형성된 후, 전기방사장치(1)의 후단부에 위치하는 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터를 제조한다. The first polyvinylidene fluoride nanofiber nonwoven fabric is laminated on one side of the cellulose substrate in the first unit 10a of the electrospinning apparatus 1 as described above, and the first polyvinyl is laminated with the cellulose substrate. After the fabric made of the lithium fluoride nanofiber nonwoven fabric is rotated 180 ° while passing through the flip device 110, the second polyvinylidene fluoride nano on the other side of the cellulose substrate in the second unit (10b) Fibrous nonwovens are laminated. After the first and second polyvinylidene fluoride nanofibers are laminated on both surfaces of the cellulose substrate, the present invention is subjected to heat-sealing in a laminating apparatus 90 positioned at the rear end of the electrospinning apparatus 1. To prepare a filter.

실시예1Example 1

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드(N,N-Dimethylacetamide, DMAc)에 용해하여 방사용액을 제조하고, 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 셀룰로오스 기재의 일측면에 상기 방사용액을 전기방사하여 3㎛ 두께의 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 셀룰로오스 기재와 이에 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 직물의 상, 하가 180°로 역전되도록 회전한 후, 제2 유닛으로 공급한다. 제2 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면에 상기 방사용액을 전기방사하여 3㎛ 두께의 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후 셀룰로오스 기재와 상기 셀룰로오스 기재의 양면에 적층형성된 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide (N, N-Dimethylacetamide, DMAc) to prepare a spinning solution, and the spinning solution main of the first and second units of the electrospinning apparatus. It was put in a tank. In the first unit of the electrospinning apparatus, the spinning solution was electrospun on one side of the cellulose substrate to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 μm. The flip device located at the rear end of the first unit is rotated so that the top and bottom of the fabric including the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated thereon are rotated by 180 ° and then supplied to the second unit. do. In the second unit, the second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 μm is formed by electrospinning the spinning solution on the other side of the cellulose substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. It was. After electrospinning, the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces of the cellulose substrate and the cellulose substrate were thermally fused in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

실시예2Example 2

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드와, 수평균 분자량이 3,000인 핫멜트용 폴리비닐리덴 플루오라이드 수지를 디메틸아세트아미드(N,N-Dimethylacetamide, DMAc)에 용해시켜 방사용액을 제조하고 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하는 것 이외에는 실시예 1과 동일한 조건으로 필터를 제조하였다.A spinning solution was prepared by dissolving polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and polyvinylidene fluoride resin for hot melt having a number average molecular weight of 3,000 in dimethylacetamide (N, N-Dimethylacetamide, DMAc). A filter was prepared under the same conditions as in Example 1 except that the first and second units of the electrospinning apparatus were put in the spinning solution main tanks.

실시예3Example 3

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 방사용액을 제조하고 전기방사장치의 각 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 인가전압을 15kV로 부여하여 셀룰로오스 기재의 일면에 상기 방사용액을 전기방사하여 두께 2.5㎛, 섬유직경이 250nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 셀룰로오스 기재와 상기 셀룰로오스 기재의 일면에 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 직물의 상,하가 180°로 역전되도록 회전한 후, 제2 유닛으로 공급한다. 제2 유닛에서는 인가전압을 20kV로 부여하여 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면에 상기 방사용액을 전기방사하여 2.5㎛ 두께, 섬유직경이 130nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후 상기 셀룰로오스 기재와 상기 셀룰로오스 기재의 양면에 적층형성된 상기 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조한다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide to prepare a spinning solution, which was added to the spinning solution main tank of each unit of the electrospinning apparatus. In the first unit of the electrospinning apparatus, an applied voltage was applied at 15 kV to electrospin the spinning solution on one surface of a cellulose substrate to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm and a fiber diameter of 250 nm. . In a flip device located at the rear end of the first unit, the top and bottom of the fabric including the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated on one surface of the cellulose substrate are rotated to be reversed by 180 °. Supply to the second unit. In the second unit, by applying an applied voltage of 20 kV, the spinning solution is electrospun on the other side of the cellulose base on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated, and has a thickness of 2.5 μm and a fiber diameter of 130 nm. 2 polyvinylidene fluoride nanofiber nonwoven fabric was laminated. After electrospinning, the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces of the cellulose substrate and the cellulose substrate are thermally fused in a laminating apparatus to finally prepare a filter. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%.

실시예4Example 4

수평균 분자량이 3,000인 핫멜트용 폴리비닐리덴 플루오라이드 수지를 디메틸포름아미드(N,N-Dimethylformamide,DMF)에 8중량% 용해하여 제조한 핫멜트 용액을 전기방사장치의 제1 및 3 유닛의 방사용액 주탱크에 투입하고, 중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시킨 폴리비닐리덴 플루오라이드 방사용액을 제조하여 전기방사장치의 제2 및 4 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 셀룰로오스 기재의 일측면에 상기 핫멜트 용액을 전기방사하여 두께 1㎛의 제1 핫멜트 전기방사층을 적층형성하고 제2 유닛에서는 상기 제1 핫멜트 전기방사층 상에 상기 폴리비닐리덴 플루오라이드 방사용액을 연속적으로 전기방사하여 두께 2.5㎛인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제2 유닛 후단부에 위치한 플립장치는 상기 셀룰로오스와 상기 셀룰로오스 일측면에 적층형성된 제1 핫멜트 전기방사층 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 직물의 상,하가 180°로 역전되도록 회전한 후 제3 유닛으로 공급한다. 제3 유닛에서는 상기 제1 핫멜트 전기방사층이 적층되지 않은 상기 셀룰로오스 기재의 타측면에 상기 핫멜트 용액을 전기방사하여 두께 1㎛의 제2 핫멜트 전기방사층을 적층형성하였다. 제4 유닛에서는 상기 제2 핫멜트 전기방사층 상에 상기 폴리비닐리덴 플루오라이드 방사용액을 연속적으로 전기방사하여 두께 2.5㎛인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후 상기 셀룰로오스 기재와 상기 셀룰로오스 기재의 양면에 적층형성된 상기 제1 및 2 핫멜트 전기방사층과 상기 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조한다.A hot melt solution prepared by dissolving a polyvinylidene fluoride resin for hot melt having a number average molecular weight of 3,000 in dimethylformamide (N, N-Dimethylformamide, DMF) by 8 wt%, the spinning solution of the first and third units of the electrospinning apparatus. A polyvinylidene fluoride spinning solution prepared by discharging polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 in dimethylacetamide was prepared in a main tank, and the spinning solutions of the second and fourth units of the electrospinning apparatus were prepared. It was put in a tank. In the first unit of the electrospinning apparatus, the hot melt solution is electrospun on one side of a cellulose substrate to form a first hot melt electrospinning layer having a thickness of 1 μm, and in the second unit, the polymelt is formed on the first hot melt electrospinning layer. The vinylidene fluoride spinning solution was continuously electrospun to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm. The flip device located at the rear end of the second unit has a top and bottom of the fabric including the cellulose and the first hot melt electrospinning layer laminated on one side of the cellulose and the first polyvinylidene fluoride nanofiber nonwoven fabric reversed to 180 °. Rotate as much as possible before feeding to the third unit. In the third unit, the hot melt solution was electrospun on the other side of the cellulose base on which the first hot melt electrospinning layer was not laminated to form a second hot melt electrospinning layer having a thickness of 1 μm. In the fourth unit, the polyvinylidene fluoride spinning solution was continuously electrospun on the second hot melt electrospinning layer to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm. After electrospinning, the first and second hot melt electrospun layers and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces of the cellulose substrate and the cellulose substrate were thermally fused in a laminating apparatus to finally prepare a filter. do.

이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

비교예1Comparative Example 1

실시예 1에 쓰인 셀룰로오스 기재를 필터 여재로 사용하였다.The cellulose base material used in Example 1 was used as a filter medium.

비교예2Comparative Example 2

셀룰로오스 기재 양면에 폴리아미드를 전기방사하여 폴리아미드 나노섬유 부직포를 적층하여 필터를 제조하였다.A polyamide nanofiber nonwoven fabric was laminated by electrospinning polyamide on both sides of a cellulose substrate to prepare a filter.

- 여과효율 측정-Filtration efficiency measurement

상기 제조된 나노섬유 필터의 효율을 측정하기 위해 DOP 시험방법을 이용하였다. DOP 시험방법은 티에스아이 인코퍼레이티드(TSI Incorporated)의 TSI 3160의 자동화 필터 분석기(AFT)로 디옥틸프탈레이트(DOP) 효율을 측정하는 것으로서, 필터 미디어 소재의 통기성, 필터 효율, 차압을 측정할 수 있다.The DOP test method was used to measure the efficiency of the prepared nanofiber filter. The DOP test method is TSI Incorporated's TSI 3160's automated filter analyzer (AFT) to measure dioctylphthalate (DOP) efficiency, which measures the air permeability, filter efficiency and differential pressure of filter media materials. Can be.

상기 자동화 분석기는 DOP를 원하는 크기의 입자를 만들어 필터 시트 위에 투과하여 공기의 속도, DOP 여과 효율, 공기 투과도(통기성) 등을 계수법으로 자동으로 측정하는 장치이며 고효율 필터에 아주 중요한 기기이다.The automated analyzer is a device that measures the air velocity, DOP filtration efficiency, air permeability (breathability), etc. by counting the DOP through the filter sheet to make particles of the desired size and is a very important device for high efficiency filters.

DOP % 효율은 다음과 같이 정의된다:DOP% efficiency is defined as:

DOP % 투과율 = 1 - 100 (DOP농도 하류/DOP 농도 상류)DOP% Permeability = 1-100 (DOP Concentration Downstream / DOP Concentration Upstream)

실시예 1 내지 4 및 비교예 1의 여과 효율을 상기와 같은 방법에 의해 측정하여 표 1에 나타내었다.The filtration efficiency of Examples 1 to 4 and Comparative Example 1 was measured by the same method as shown in Table 1 below.

표 1 실시예1 실시예2 실시예3 실시예4 비교예1 0.35㎛ DOP여과효율 (%) 95 94 96 93 70 Table 1 Example 1 Example 2 Example 3 Example 4 Comparative Example 1 0.35㎛ DOP filtration efficiency (%) 95 94 96 93 70

이와 같이 본 발명의 실시예 1 내지 4를 통해 제조된 셀룰로오스 기재 양면에 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 필터는 비교예1에 비하여 여과효율이 우수함을 알 수 있다.As described above, it can be seen that the filter including polyvinylidene fluoride nanofiber nonwoven fabric on both surfaces of the cellulose substrate prepared through Examples 1 to 4 of the present invention has better filtration efficiency than Comparative Example 1.

- 나노섬유 부직포의 탈리여부-Desorption of Nanofiber Nonwoven Fabric

상기 제조된 필터를 ASTM D 2724 방법으로 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 2 및 4에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 2에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.As a result of measuring the detachment of the nanofiber nonwoven fabric and the filter substrate by the ASTM D 2724 method, the filter prepared in Examples 2 and 4 did not occur in the filter prepared in Examples 2, 4, but prepared by Comparative Example 2 Filter produced desorption of the nanofiber nonwoven fabric.

- 압력강하 및 필터수명 측정-Pressure drop and filter life measurement

상기 제조된 나노섬유 부직포 필터를 50/m3의 유량에 따른 ASHRAE 52.1로 압력강하(Pressure drop)을 측정하고, 이에 따른 필터 수명을 측정하였다. 실시예 1 내지 4와 비교예1을 비교한 데이터를 표 2에 나타내었다.The pressure drop (Pressure drop) was measured by the ASHRAE 52.1 according to the flow rate of 50 / m 3 of the prepared nanofiber nonwoven filter, and the filter life was measured accordingly. Table 2 shows the data comparing Examples 1 to 4 and Comparative Example 1.

표 2 실시예1 실시예2 실시예3 실시예4 비교예1 압력강하 (in.w.g) 4.4 4.2 4.0 4.3 8.0 필터수명 (month) 6.0 6.0 6.1 6.0 3.2 TABLE 2 Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Pressure drop (in.wg) 4.4 4.2 4.0 4.3 8.0 Filter life (month) 6.0 6.0 6.1 6.0 3.2

표 2에 따르면 본 발명의 실시예 1 내지 4를 통해 제조된 필터는 비교예 1에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 2, the filters prepared through Examples 1 to 4 of the present invention have a lower pressure drop than Comparative Example 1, resulting in less pressure loss and longer filter life, resulting in superior durability.

한편, 본 발명의 일 실시예에서는 기재로 셀룰로오스 기재를 사용하였으나, 기재로 폴리에틸렌 테레프탈레이트(PET) 기재를 사용하는 것도 가능하며, 고분자 방사용액은 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 방사용액을 사용하는 것이 가능하다. 여기서 상기 고융점 폴리비닐리덴 플루오라이드와 저융점 폴리비닐리덴 플루오라이드를 혼합하여 사용하는 것은 핫멜트와 같은 접착제를 사용하지 않고서도 나노섬유 부직포와 기재 사이에 분리가 쉽게 일어나는 것을 방지한다.Meanwhile, in one embodiment of the present invention, a cellulose substrate is used as the substrate, but a polyethylene terephthalate (PET) substrate may be used as the substrate, and the polymer spinning solution may be a high melting point polyvinylidene fluoride and a low melting point polyvinylidene. It is possible to use a spinning solution mixed with fluoride. Here, the use of the high melting point polyvinylidene fluoride and the low melting point polyvinylidene fluoride in combination prevents separation easily between the nanofiber nonwoven fabric and the substrate without using an adhesive such as hot melt.

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1)의 제1 유닛(10a)에서 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 고융점 폴리비닐리덴 플루오라이드와 저융점 폴리비닐리덴 플루오라이드를 혼합한 방사용액을 전기방사한 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되고, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 폴리에틸렌 테레프탈레이트 기재로 이루어진 직물이 플립장치(110)를 통과하면서 직물의 상하가 180° 회전된 후, 제2 유닛(10b)에서 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 상기 방사용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 상기 폴리에틸렌 테레프탈레이트 기재의 양면에 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유가 각각 적층형성된 후, 전기방사장치(1)의 후단에 위치하는 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다. 여기서 전기방사장치(1)의 각 유닛(10a, 10b)마다 방사전압을 달리하거나, 방사 구간의 높이를 다르게 하는 등의 방사 조건을 달리하여 섬유직경이 다른 나노섬유 부직포를 기재의 양면에 적층형성하는 것도 가능하다.In order to manufacture the filter of the present embodiment, it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, a high melting point polyvinylidene fluoride and a low melting point on one side of the polyethylene terephthalate substrate. A first polyvinylidene fluoride nanofiber nonwoven fabric electrospun with a spinning solution containing a melting point polyvinylidene fluoride is laminated, and a fabric made of the first polyvinylidene fluoride nanofiber nonwoven fabric and a polyethylene terephthalate substrate After the top and bottom of the fabric is rotated 180 ° while passing through the flip device 110, the second polyvinylidene fluoride nanofiber by electrospinning the spinning solution on the other side of the polyethylene terephthalate substrate in the second unit (10b) The nonwoven fabric is laminated. After the first and second polyvinylidene fluoride nanofibers are laminated on both sides of the polyethylene terephthalate substrate, the heat-sealing process is performed in the laminating apparatus 90 located at the rear end of the electrospinning apparatus 1. The filter of the invention is produced. Here, nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.

실시예5Example 5

중량평균 분자량(Mw)이 50,000인 고융점 폴리비닐리덴 플루오라이드와 중량평균분자량이 5,000인 저융점 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 방사용액을 제조하고 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 평량이 130g/m2인 폴리에틸렌 테레프탈레이트 기재 상에 상기 방사용액을 전기방사하여 2.5㎛ 두께의 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 폴리에틸렌 테레프탈레이트 기재 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물에서 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않은 폴리에틸렌 테레프탈레이트 기재의 타측면이 노즐블록을 향하도록 직물의 상하를 180° 뒤집는다. 뒤이어 제2 유닛에서는 상기 폴리에틸렌 테레프탈레이트 기재 상에 상기 방사용액을 연속적으로 전기방사하여 2.5㎛ 두께의 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사후에는 상기 폴리에틸렌 테레프탈레이트 기재 및 상기 폴리에틸렌 테레프탈레이트 기재의 양면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank. In the first unit of the electrospinning apparatus, the spinning solution was electrospun on a polyethylene terephthalate substrate having a basis weight of 130 g / m 2 to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm. In a flip device located at the rear end of the first unit, the polyethylene terephthalate which is not bonded to the first polyvinylidene fluoride nanofiber nonwoven in a fabric laminated in the order of the polyethylene terephthalate substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric The fabric is turned upside down 180 ° so that the other side of the phthalate substrate faces the nozzle block. Subsequently, in the second unit, the spinning solution was continuously electrospun on the polyethylene terephthalate substrate to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm. After electrospinning, the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate were thermally fused in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

실시예6Example 6

중량평균 분자량(Mw)이 50,000인 고융점 폴리비닐리덴 플루오라이드와 중량평균분자량이 5,000인 저융점 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 방사용액을 제조하고 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 평량이 130g/m2인 폴리에틸렌 테레프탈레이트 기재 상에 인가전압을 15kV로 부여한 채 상기 방사용액을 전기방사하여 두께 2.5㎛, 섬유직경 250nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 폴리에틸렌 테레프탈레이트 기재 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물에서 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 접합하지 않은 폴리에틸렌 테레프탈레이트 기재의 타측면이 노즐블록을 향하도록 직물의 상하를 180° 뒤집는다. 뒤이어 제2 유닛에서는 노즐블록을 향하는 폴리에틸렌 테레프탈레이트 기재 상에 인가전압을 20kV로 부여하고 상기 방사용액을 연속적으로 전기방사하여 두께 2.5㎛, 섬유직경 130nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후 상기 폴리에틸렌 테레프탈레이트 기재 및 이의 양면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank. In the first unit of the electrospinning apparatus, a first polyvinylidene fluoride having a thickness of 2.5 μm and a fiber diameter of 250 nm by electrospinning the spinning solution on an polyethylene terephthalate substrate having a basis weight of 130 g / m 2 with an applied voltage of 15 kV. Nanofiber nonwoven fabrics were laminated. In a flip device located at the rear end of the first unit, the polyethylene terephthalate in which the first polyvinylidene fluoride nanofiber nonwoven is not bonded in the fabric laminated in the order of the polyethylene terephthalate substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric The fabric is turned upside down 180 ° so that the other side of the phthalate substrate faces the nozzle block. Subsequently, in the second unit, a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm and a fiber diameter of 130 nm was applied by applying an applied voltage of 20 kV on the polyethylene terephthalate substrate facing the nozzle block and continuously spinning the spinning solution. Lamination was performed. After electrospinning, the polyethylene terephthalate substrate and first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces thereof were thermally fused in a laminating apparatus to finally prepare a filter. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%.

비교예3Comparative Example 3

실시예 5에 쓰인 폴리에틸렌 테레프탈레이트 기재를 필터 여재로 사용하였다.The polyethylene terephthalate substrate used in Example 5 was used as filter media.

비교예4Comparative Example 4

폴리에틸렌 테레프탈레이트 기재의 양면에 폴리비닐리덴 플루오라이드를 전기방사하여 필터를 제조하였다.A filter was prepared by electrospinning polyvinylidene fluoride on both sides of a polyethylene terephthalate substrate.

상기 실시예 5, 6 및 비교예 3의 여과효율을 상기와 같은 방법에 의해 측정하여 표 3에 나타내었다.The filtration efficiency of Examples 5, 6 and Comparative Example 3 was measured by the same method as shown in Table 3 below.

표 3 실시예5 실시예6 비교예3 0.35㎛ DOP여과효율(%) 92 94 71 TABLE 3 Example 5 Example 6 Comparative Example 3 0.35㎛ DOP filtration efficiency (%) 92 94 71

표 1에 따르면 본 발명의 실시예5 및 6을 통해 제조된 필터는 비교예3에 비하여 여과효율이 우수함을 알 수 있다.According to Table 1 it can be seen that the filters produced through Examples 5 and 6 of the present invention are superior in filtration efficiency than Comparative Example 3.

또한, 상기 실시예 5 및 6에 의해 제조된 필터와 비교예 3의 압력강하 및 필터수명을 상기 측정방법에 따라 측정하여 표 4에 나타내었다.In addition, the pressure drop and filter life of the filters prepared in Examples 5 and 6 and Comparative Example 3 were measured according to the above measurement method and are shown in Table 4.

표 4 실시예5 실시예6 비교예3 압력강하 (in.w.g) 4.4 4.2 8.5 필터수명 (month) 5.9 6.0 3.2 Table 4 Example 5 Example 6 Comparative Example 3 Pressure drop (in.wg) 4.4 4.2 8.5 Filter life (month) 5.9 6.0 3.2

표 4에 따르면 본 발명의 실시예5 및 6을 통해 제조된 필터는 비교예3에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 4, the filters manufactured through Examples 5 and 6 of the present invention have a lower pressure drop than Comparative Example 3, resulting in less pressure loss and longer filter life, resulting in superior durability.

- 나노섬유 부직포의 탈리여부-Desorption of Nanofiber Nonwoven Fabric

상기 제조된 필터를 ASTM D 2724 방법으로 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 5 및 6에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 4에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.As a result of measuring the detachment of the nanofiber nonwoven fabric and the filter substrate by the ASTM D 2724 method, the filter produced in Examples 5 and 6 did not occur in the filter prepared in Examples 5, 6, but prepared by Comparative Example 4 Filter produced desorption of the nanofiber nonwoven fabric.

한편, 본 발명의 실시예에서는 기재로 셀룰로오스 기재를 사용하였으나, 본 발명의 또 다른 실시예로서는 셀룰로오스 기재를 사용하였으나, 본 발명의 다른 실시예에서는 기재로 이성분 기재를 사용하는 것이 가능하며, 고분자 방사용액에 사용되는 고분자로는 폴리비닐리덴 플루오라이드과 핫멜트를 혼합하여 사용하는 것이 가능하다. 여기서 상기 핫멜트는 폴리비닐리덴 플루오라이드계 핫멜트인 것이 바람직하다. On the other hand, in the embodiment of the present invention used a cellulose substrate as a base material, but in another embodiment of the present invention was used a cellulose base, in another embodiment of the present invention it is possible to use a two-component base material as a base material, As the polymer used in the working liquid, it is possible to use a mixture of polyvinylidene fluoride and hot melt. Here, the hot melt is preferably polyvinylidene fluoride-based hot melt.

본 실시예에서의 이성분 기재는 용융점이 다른 두가지 성분이 결합된 폴리에틸렌 테레프탈레이트가 가장 바람직하다. 상기 폴리에틸렌 테레프탈레이트 이성분 기재는 시스-코어형(Sheath-Core), 사이드 바이 사이드(Side-by-Side), 씨타입(C-Type) 등으로 구분될 수 있다. 이 중 시스-코어형 이성분 기재의 경우에 시스 부분은 저융점 폴리에틸렌 테레프탈레이트이며, 코어부분은 일반적인 폴리에틸렌 테레프탈레이트로 구성되어 있다. 여기서 시스 부분은 약 10 내지 90 중량%이고, 코어는 약 90 내지 10 중량%로 이루어진다. 시스 부분은 바인더 섬유의 바깥 표면을 형성하는 열적 결합제로서 작용하며, 약 80 내지 150℃의 융점을 갖고, 코어는 약 160 내지 250℃의 융점을 갖는다. 본 발명에서 일 실시예로 사용되는 시스-코어형 이성분 기재는 시스부분에 통상의 융점 분석기기로 융점이 나타나지 않는 비결정성 폴리에스테르 공중합체를 포함하며, 코어성분으로는 바람직하게 상대적으로 고융점 성분을 사용하는 열접착성 복합섬유이다. As for the bicomponent base material in this Example, the polyethylene terephthalate which the two components from which a melting point differs is most preferable. The polyethylene terephthalate bicomponent substrate may be classified into a sheath-core, a side-by-side, a C-type, and the like. In the case of the cis-core bicomponent base material, the sheath portion is a low melting polyethylene terephthalate, and the core portion is composed of a general polyethylene terephthalate. Wherein the sheath portion is about 10 to 90% by weight and the core consists of about 90 to 10% by weight. The sheath portion acts as a thermal binder forming the outer surface of the binder fiber and has a melting point of about 80 to 150 ° C. and the core has a melting point of about 160 to 250 ° C. The cis-core bicomponent base material used as an embodiment in the present invention includes an amorphous polyester copolymer in which the melting point does not appear in the sheath portion with a conventional melting point analyzer, and the core component is preferably a relatively high melting point. It is a heat-adhesive composite fiber using the component.

시스 부분에 포함되는 폴리에스테르 공중합체는 50 내지 70몰%이 폴리에틸렌 테레프탈레이트 단위로 되어 있는 공중합 폴리에스테르이다. 30 내지 50몰%은 공중합 산성분으로는 이소프탈산이 바람직하나, 그 외에도 통상의 디카르복실산은 모두 가능하다. The polyester copolymer contained in a sheath part is co-polyester whose 50-70 mol% is a polyethylene terephthalate unit. 30 to 50 mol% is preferably isophthalic acid as the copolymerized acid component, but other ordinary dicarboxylic acids are possible.

코어 성분으로 사용하는 고융점 성분으로는 융점이 160℃ 이상인 폴리머가 적합하며, 그 사용가능한 예로는 폴리에틸렌 테레프탈레이트, 폴리부틸렌 테레프탈레이트, 폴리아마이드, 폴리에틸렌 테레프탈레이트 공중합체 및 폴리프로필렌 등이 있다. 본 실시예에서 사용되는 상기 이성분 기재의 평량은 10 내지 50g/m2인 것이 바람직하다. The high melting point component used as the core component is a polymer having a melting point of 160 ° C. or higher, and examples of the high melting point component include polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene terephthalate copolymer, and polypropylene. The basis weight of the two-component base material used in this embodiment is preferably 10 to 50g / m 2.

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1)의 제1 유닛(10a)에서 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 방사용액이 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 전기방사되어 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포가 적층형성되고, 상기 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포와 폴리에틸렌 테레프탈레이트 기재로 이루어진 직물이 플립장치(110)를 통과하면서 직물의 상하가 180˚ 회전된 후, 제2 유닛(10b)에서 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 상기 방사용액이 전기방사되어 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포가 적층형성된다. 상기 폴리에틸렌 테레프탈레이트 기재의 양면에 제1 및 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포가 각각 적층형성된 후, 전기방사장치(1)의 후단에 위치하는 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다. 여기서 전기방사장치(1)의 각 유닛(10a, 10b)마다 방사전압을 달리하거나, 방사 구간의 높이를 다르게 하는 등의 방사 조건을 달리하여 섬유직경이 다른 나노섬유 부직포를 기재의 양면에 적층형성하는 것도 가능하다.In order to manufacture the filter of the present embodiment, it is manufactured by the manufacturing method as described above, wherein the spinning solution in which polyvinylidene fluoride and hot melt are mixed in the first unit 10a of the electrospinning apparatus 1 is based on the polyethylene terephthalate substrate. Electrospun on one side of the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric is laminated, the fabric consisting of the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric and polyethylene terephthalate substrate flip device 110 After the upper and lower sides of the fabric are rotated 180 ° while passing through), the spinning solution is electrospun on the other side of the polyethylene terephthalate substrate in the second unit 10b so that the second polyvinylidene fluoride-hot melt nanofiber nonwoven fabric It is laminated. After the first and second polyvinylidene fluoride-hot melt nanofiber non-woven fabric is laminated on both sides of the polyethylene terephthalate substrate, the heat-sealing process in the laminating apparatus 90 located at the rear end of the electrospinning apparatus 1 Via the filter of the present invention is produced. Here, nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.

실시예7Example 7

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드와, 수평균 분자량이 3,000인 핫멜트용 폴리비닐리덴 플루오라이드 수지를 디메틸아세트아미드(N,N-Dimethylacetamide, DMAc)에 용해시켜 방사용액을 제조하고 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 이성분 기재의 일측면에 상기 방사용액을 전기방사하여 2.5㎛ 두께의 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 이성분 기재와 이에 적층형성된 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 포함하는 직물의 상, 하가 180°로 역전되도록 회전한 후, 제2 유닛으로 공급한다. 제2 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포가 적층되지 않은 상기 이성분 기재의 타측면에 상기 방사용액을 전기방사하여 2.5㎛두께의 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 상기 이성분 기재와 상기 이성분 기재의 양면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A spinning solution was prepared by dissolving polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and polyvinylidene fluoride resin for hot melt having a number average molecular weight of 3,000 in dimethylacetamide (N, N-Dimethylacetamide, DMAc). And into the spinning solution main tanks of the first and second units of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the spinning solution was electrospun on one side of the bicomponent substrate to form a first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric having a thickness of 2.5 μm. In the flip device located at the rear end of the first unit, the upper and lower portions of the fabric including the bicomponent substrate and the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric laminated thereon are rotated to be reversed by 180 °, and then the second Supply to the unit. In the second unit, the second polyvinylidene fluoride-hot melt nano having a thickness of 2.5 μm by electrospinning the spinning solution on the other side of the two-component substrate on which the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric is not laminated. Fibrous nonwovens were laminated. After electrospinning, the first and second polyvinylidene fluoride-hotmelt nanofiber nonwoven fabrics laminated on both surfaces of the bicomponent substrate and the bicomponent substrate were thermally fused in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

실시예8Example 8

제1 유닛의 전기방사 조건인 인가전압을 15kV로 부여하고, 제2 유닛의 인가전압을 20kV로 부여하는 것을 제외하고는 실시예 7과 동일하게 필터를 제조하였다.A filter was manufactured in the same manner as in Example 7, except that the applied voltage, which is the electrospinning condition of the first unit, was applied to 15 kV, and the applied voltage of the second unit was applied to 20 kV.

비교예5Comparative Example 5

실시예7에 사용된 이성분 기재 상에 한 층의 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 전기방사하여 필터를 제조하였다.A filter was prepared by electrospinning a layer of polyvinylidene fluoride-hotmelt nanofiber nonwoven fabric on the bicomponent substrate used in Example 7.

비교예6Comparative Example 6

이성분 기재 양면에 폴리아미드를 전기방사하여 폴리아미드 나노섬유 부직포를 적층하여 필터를 제조하였다. A polyamide nanofiber nonwoven fabric was laminated by electrospinning polyamide on both sides of a bicomponent substrate to prepare a filter.

상기 실시예 7,8 및 비교예 5의 여과효율을 상기와 같은 방법에 의해 측정하여 표 5에 나타내었다.The filtration efficiency of Example 7,8 and Comparative Example 5 was measured by the same method as shown in Table 5 below.

표 5 실시예7 실시예8 비교예5 0.35㎛ DOP여과효율(%) 93 95 88 Table 5 Example 7 Example 8 Comparative Example 5 0.35㎛ DOP filtration efficiency (%) 93 95 88

이와 같이 본 발명의 실시예7,8을 통해 제조된 필터는 비교예 5에 비하여 여과효율이 우수함을 알 수 있다.Thus, it can be seen that the filters produced through Examples 7 and 8 of the present invention are superior in filtration efficiency than Comparative Example 5.

또한, 상기 실시예 7,8과 비교예 5의 압력강하 및 필터수명을 상기 측정방법에 따라 측정하여 표6에 나타내었다.In addition, the pressure drop and the filter life of Example 7, 8 and Comparative Example 5 were measured in accordance with the above measurement method and are shown in Table 6.

표 6 실시예7 실시예8 비교예5 압력강하 (in.w.g) 7.0 7.2 10.0 필터수명 (month) 4.5 4.3 3.2. Table 6 Example 7 Example 8 Comparative Example 5 Pressure drop (in.wg) 7.0 7.2 10.0 Filter life (month) 4.5 4.3 3.2.

표 6에 따르면 본 실시예 7을 통해 제조된 필터는 비교예5에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 6, the filter manufactured according to Example 7 has a lower pressure drop than Comparative Example 5, resulting in less pressure loss and longer filter life resulting in superior durability.

또한, 실시예 7 및 8에 의해 제조된 필터를 ASTM D 2724 방법으로 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 7 및 8에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 6에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, as a result of measuring the detachment of the nanofiber nonwoven fabric and the filter substrate by the ASTM D 2724 method of the filters prepared in Examples 7 and 8, in Example 7 and 8 did not occur detachment of the nanofiber nonwoven fabric, Comparative Example 6 The filter produced by the desorption of the nanofiber nonwoven fabric occurred.

한편, 본 발명의 실시예에서는 기재로 셀룰로오스 기재를 사용하였으나, 본 발명의 다른 실시예에서는 기재로 제1 이성분 기재, 폴리에틸렌 테레프탈레이트(PET)기재, 제2 이성분 기재로 적층된 기재를 사용하는 것이 가능하며, 고분자 방사용액으로는 폴리비닐리덴 플루오라이드가 용매에 용해된 폴리비닐리덴 플루오라이드 방사용액을 사용하여 필터를 제조하는 것이 가능하다. 여기서 제1 및 제2 이성분 기재는 상기 실시예에 기재된 이성분 기재와 동일한 소재이며, 평량은 10 내지 50g/m2인 것이 바람직하다. Meanwhile, in the embodiment of the present invention, a cellulose substrate is used as a substrate, but in another embodiment of the present invention, a substrate laminated with a first bicomponent substrate, a polyethylene terephthalate (PET) substrate, and a second bicomponent substrate is used as the substrate. As the polymer spinning solution, it is possible to prepare a filter using a polyvinylidene fluoride spinning solution in which polyvinylidene fluoride is dissolved in a solvent. Here, it is preferable that a 1st and 2nd bicomponent base material is the same material as the bicomponent base material described in the said Example, and basis weight is 10-50 g / m <2> .

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1)의 제1 유닛(10a)에서 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트(PET)기재, 제2 이성분 기재로 적층된 기재의 제1 이성분 기재의 일측면에 상기 폴리비닐리덴 플루오라이드 방사용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 여기서, 상기 전기방사장치(1)의 제1 유닛(10a)과 제2 유닛(10b) 사이에 구비되는 플립장치(110)에 의해 상기 제1 유닛(10a)을 통과한 직물의 상,하가 180° 회전된다. 이후 제2 유닛(10b)에서 상기 제2 이성분 기재 상에 상기 폴리비닐리덴 플루오라이드 방사용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 따라서, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재 및 제2 이성분 기재의 순서로 적층된 기재의 양면에 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 각각 적층형성된 후, 전기방사장치(1)의 후단에 위치하는 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다. In order to manufacture the filter of the present embodiment, it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, the first bicomponent substrate, polyethylene terephthalate (PET) substrate, and second isomerism. The first polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride spinning solution on one side of the first bicomponent substrate of the substrate laminated with the powder substrate. Here, the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 °. Thereafter, the second polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride spinning solution on the second bicomponent substrate in the second unit 10b. Accordingly, after the first and second polyvinylidene fluoride nanofiber nonwoven fabrics are laminated on both surfaces of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate, an electrospinning apparatus is formed. The filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90 positioned at the rear end of (1).

여기서 전기방사장치(1)의 각 유닛(10a, 10b)마다 방사전압을 달리하거나, 방사 구간의 높이를 다르게 하는 등의 방사 조건을 달리하여 섬유직경이 다른 나노섬유 부직포를 기재의 양면에 적층형성하는 것도 가능하다.Here, nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.

실시예9Example 9

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드(N,N-Dimethylacetamide, DMAc)에 용해시켜 방사용액을 제조하고, 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 그리고 평량이 30g/m2인 제1 이성분 기재, 평량이 55g/m2인 폴리에틸렌 테레프탈레이트 기재, 평량이 30g/m2인 제2 이성분 기재의 순서로 적층된 기재를 전기방사장치의 컬렉터 상에 위치시켰다. 전기방사장치의 제1 유닛에서는 상기 제1 이성분 기재 상에 상기 방사용액을 전기방사하여 3㎛ 두께의 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 제1 이성분 기재 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 폴리에틸렌 테레프탈레이트 기재, 상기 제2 이성분 기재의 순서로 적층된 직물의 상, 하를 180° 회전하였다. 뒤이어 제2 유닛에서는 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재의 일면에 상기 방사용액을 연속적으로 전기방사하여 3㎛ 두께의 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 상기 폴리에틸렌 테레프탈레이트 기재와 상기 폴리에틸렌 테레프탈레이트 기재의 양면에 적층된 제1 및 2 이성분 기재와 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이루어진 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조한다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide (N, N-Dimethylacetamide, DMAc) to prepare a spinning solution, and the spinning solution main of the first and second units of the electrospinning apparatus. It was put in a tank. And a basis weight of 30g / m 2 in the first two-component base material, a basis weight of 55g / m 2 of polyethylene terephthalate substrate, a basis weight of 30g / m 2 in a second two-component collector of the electrospinning apparatus of the layered substrate in the order of the base material Placed in phase. In the first unit of the electrospinning apparatus, the spinning solution was electrospun on the first bicomponent substrate to laminate a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 μm. The flip device located at the rear end of the first unit includes a first bicomponent substrate and a first polyvinylidene fluoride nanofiber nonwoven fabric, a polyethylene terephthalate substrate, and a fabric laminated in the order of the second bicomponent substrate. ° rotated. Subsequently, in the second unit, a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 μm was formed by continuously electrospinning the spinning solution on one surface of the second bicomponent substrate not bonded to the polyethylene terephthalate substrate. . After electrospinning, fabrics composed of the first and second bicomponent substrates and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate were thermally fused in a laminating apparatus. Finally, a filter is prepared. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

실시예10Example 10

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 방사용액을 제조하고 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 그리고 평량이 30g/m2인 제1 이성분 기재, 평량이 55g/m2인 폴리에틸렌 테레프탈레이트 기재, 평량이 30g/m2인 제2 이성분 기재의 순서로 적층된 기재를 전기방사장치의 컬렉터 상에 위치시켰다. 전기방사장치의 제1 유닛에서는 인가전압을 15kV로 부여하여 상기 제1 이성분 기재 상에 상기 방사용액을 전기방사하여 두께 3㎛, 섬유직경이 250nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 제1 이성분 기재 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 폴리에틸렌 테레프탈레이트, 상기 제2 이성분 기재의 순서로 적층된 직물의 상, 하를 180° 회전하였다. 뒤이어, 제2 유닛에서는 인가전압을 20kV로 부여하여 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재의 일면에 상기 방사용액을 연속적으로 전기방사하여 두께 3㎛, 섬유직경이 130nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 상기 폴리에틸렌 테레프탈레이트 기재와 상기 폴리에틸렌 테레프탈레이트 기재의 양면에 적층된 제1 및 2 이성분 기재와 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이루어진 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조한다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide to prepare a spinning solution, which was put into the spinning solution main tanks of the first and second units of the electrospinning apparatus. And a basis weight of 30g / m 2 in the first two-component base material, a basis weight of 55g / m 2 of polyethylene terephthalate substrate, a basis weight of 30g / m 2 in a second two-component collector of the electrospinning apparatus of the layered substrate in the order of the base material Placed in phase. In the first unit of the electrospinning apparatus, the first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 3 μm and a fiber diameter of 250 nm is formed by electrospinning the spinning solution on the first bicomponent substrate by applying an applied voltage of 15 kV. Lamination was performed. The flip device located at the rear end of the first unit has a 180 ° top and bottom of the fabric laminated in the order of the first bicomponent substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric, polyethylene terephthalate, and the second bicomponent substrate. Rotated. Subsequently, in the second unit, the spinning solution is continuously electrospun on one surface of the second bicomponent substrate which is not bonded to the polyethylene terephthalate substrate by applying an applied voltage of 20 kV, thereby obtaining a thickness of 3 μm and a fiber diameter of 130 nm. 2 polyvinylidene fluoride nanofiber nonwoven fabric was laminated. After electrospinning, fabrics composed of the first and second bicomponent substrates and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate were thermally fused in a laminating apparatus. Finally, a filter is prepared. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%.

비교예7Comparative Example 7

실시예 9에 쓰인 폴리에틸렌 테레프탈레이트 기재를 필터 여재로 사용하였다.The polyethylene terephthalate substrate used in Example 9 was used as filter media.

비교예8Comparative Example 8

폴리에틸렌 테레프탈레이트 기재의 양면에 폴리비닐리덴 플루오라이드를 전기방사하여 필터를 제조하였다.A filter was prepared by electrospinning polyvinylidene fluoride on both sides of a polyethylene terephthalate substrate.

상기 실시예 9 및 10과 비교예 7의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 7에 나타내었다.The filtration efficiency of Examples 9 and 10 and Comparative Example 7 were measured by the filtration efficiency measurement method and are shown in Table 7.

표 7 실시예9 실시예10 비교예7 0.35㎛ DOP여과효율 (%) 93 95 71 TABLE 7 Example 9 Example 10 Comparative Example 7 0.35㎛ DOP filtration efficiency (%) 93 95 71

이와 같이 본 발명의 실시예 9및 10을 통해 제조된 필터는 비교예7에 비하여 여과효율이 우수함을 알 수 있다.Thus, it can be seen that the filters prepared through Examples 9 and 10 of the present invention are superior in filtration efficiency than Comparative Example 7.

상기 실시예 9 및 10과 비교예 7의 압력강하 및 필터수명을 상기 측정방법에 따라 측정하여 표4에 나타내었다.The pressure drop and filter life of Examples 9 and 10 and Comparative Example 7 were measured according to the measuring method, and are shown in Table 4.

표 8 실시예9 실시예10 비교예7 압력강하 (in.w.g) 4.5 4.2 8.5 필터수명 (month) 5.8 6.0 3.2 Table 8 Example 9 Example 10 Comparative Example 7 Pressure drop (in.wg) 4.5 4.2 8.5 Filter life (month) 5.8 6.0 3.2

표 8에 따르면 본 실시예 9를 통해 제조된 필터는 비교예7에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 8, the filter manufactured according to Example 9 has a lower pressure drop than Comparative Example 7, resulting in less pressure loss and longer filter life resulting in superior durability.

또한, 실시예 9 및 10과 비교예 8에 의해 제조된 필터를 ASTM D 2724 방법으로 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 9 및 10에 의해 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 8에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, the filter prepared according to Examples 9 and 10 and Comparative Example 8 was measured by desorption of the nanofiber nonwoven fabric and the filter substrate by the ASTM D 2724 method, the nanofiber nonwoven fabric in the filters prepared according to Examples 9 and 10 While no desorption occurred, the filter prepared in Comparative Example 8 had desorption of the nanofiber nonwoven fabric.

한편, 본 발명의 실시예에서는 기재로 셀룰로오스 기재를 사용하였으나, 본 발명의 다른 실시예에서는 상기 일 실시예에 언급되었던 기재로 제1 이성분 기재, 폴리에틸렌 테레프탈레이트(PET)기재, 제2 이성분 기재로 적층된 기재를 사용하는 것이 가능하며, 고분자 방사용액으로는 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드가 용매에 함께 용해된 방사용액을 사용하여 필터를 제조하는 것이 가능하다. Meanwhile, in the embodiment of the present invention, a cellulose substrate is used as a substrate, but in another embodiment of the present invention, a first bicomponent substrate, a polyethylene terephthalate (PET) substrate, and a second binary component are used as the substrate mentioned in the above embodiment. It is possible to use a substrate laminated with a substrate, and as the polymer spinning solution, it is possible to prepare a filter using a spinning solution in which high melting point polyvinylidene fluoride and low melting point polyvinylidene fluoride are dissolved together in a solvent. .

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1)의 제1 유닛(10a)에서 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트(PET)기재, 제2 이성분 기재로 적층된 기재의 제1 이성분 기재의 일측면에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드가 혼합되어 용매에 용해된 방사용액을 전기방사하여 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 여기서, 상기 전기방사장치(1)의 제1 유닛(10a)과 제2 유닛(10b) 사이에 구비되는 플립장치(110)에 의해 상기 제1 유닛(10a)을 통과한 직물의 상,하가 180˚ 회전된다. 이후 제2 유닛(10b)에서 상기 제2 이성분 기재 상에 상기 방사용액을 전기방사하여 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 따라서, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재 및 제2 이성분 기재의 순서로 적층된 기재의 양면에 제1 및 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 각각 적층형성된 후, 전기방사장치(1)의 후단에 위치하는 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다. 여기서 전기방사장치(1)의 각 유닛(10a, 10b)마다 방사전압을 달리하거나, 방사 구간의 높이를 다르게 하는 등의 방사 조건을 달리하여 섬유직경이 다른 나노섬유 부직포를 기재의 양면에 적층형성하는 것도 가능하다.In order to manufacture the filter of the present embodiment, it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, the first bicomponent substrate, polyethylene terephthalate (PET) substrate, and second isomerism. A high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride are mixed on one side of the first bicomponent substrate of the substrate laminated with the powder substrate to electrospin the spinning solution dissolved in the solvent to obtain the first high melting point and low Melting point polyvinylidene fluoride nanofiber nonwovens are laminated. Here, the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 degrees. Thereafter, in the second unit 10b, the spinning solution is electrospun on the second bicomponent substrate to form a second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric. Accordingly, the first and second high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabrics are laminated on both surfaces of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate, respectively. Then, the filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90 located at the rear end of the electrospinning apparatus (1). Here, nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.

실시예11Example 11

중량평균 분자량(Mw)이 50,000인 고융점 폴리비닐리덴 플루오라이드와 중량평균분자량이 5,000인 저융점 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 방사용액을 제조하고 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 평량이 30g/m2인 제1 이성분 기재, 평량이 130g/m2인 폴리에틸렌 테레프탈레이트 기재, 평량이 30g/m2인 제2 이성분 기재의 순서로 적층되어 있는 직물의 제1 이성분 기재 상에 상기 방사용액을 전기방사하여 2.5㎛ 두께의 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 제2 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제1 이성분 기재 및 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 제2 이성분 기재의 일면이 노즐블록을 향하도록 직물의 상하를 180° 뒤집는다. 뒤이어 제2 유닛에서는 노즐블록을 향하는 제2 이성분 기재의 일면에 상기 방사용액을 연속적으로 전기방사하여 2.5㎛ 두께의 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사후에는 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 순으로 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank. The first unit of the electrospinning device having basis weight of 30g / m 2 in the first two-component base material, a basis weight of 130g / m 2 of a polyethylene terephthalate base material, the basis weight is laminated in the order of 30g / m 2 in a second two-component base The spinning solution was electrospun on the first bicomponent substrate of the woven fabric to laminate the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm. In a flip device located at the rear end of the first unit, the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate, and the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric are laminated in the fabric. The top and bottom of the fabric is flipped 180 ° so that one side of the second bicomponent substrate, which is not bonded to the polyethylene terephthalate substrate, faces the nozzle block. Subsequently, in the second unit, the spinning solution was continuously electrospun on one surface of the second bicomponent substrate facing the nozzle block to form a second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm. After electrospinning, the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent base, the polyethylene terephthalate base, the second bicomponent base, the second high melting point and the low melting point polyvinylidene fluoride nano The fabric laminated in the order of fiber nonwoven fabric was heat-sealed in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

실시예12Example 12

중량평균 분자량(Mw)이 50,000인 고융점 폴리비닐리덴 플루오라이드와 중량평균분자량이 5,000인 저융점 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 방사용액을 제조하고 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 평량이 30g/m2인 제1 이성분 기재, 평량이 130g/m2인 폴리에틸렌 테레프탈레이트 기재, 평량이 30g/m2인 제2 이성분 기재의 순서로 적층되어 있는 직물의 제1 이성분 기재 상에 인가전압을 15kV로 부여하고 상기 방사용액을 전기방사하여 두께 2.5㎛, 섬유직경 250nm인 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 제2 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제1 이성분 기재 및 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 제2 이성분 기재의 일면이 노즐블록을 향하도록 직물의 상하를 180° 뒤집는다. 뒤이어 제2 유닛에서는 노즐블록을 향하는 제2 이성분 기재의 일면에 인가전압을 20kV로 부여하고 상기 방사용액을 연속적으로 전기방사하여 두께 2.5㎛, 섬유직경 130nm인 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사후에는 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 순으로 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A high melting point polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and a low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 were dissolved in dimethylacetamide to prepare a spinning solution. 2 units of spinning solution were added to the main tank. The first unit of the electrospinning device having basis weight of 30g / m 2 in the first two-component base material, a basis weight of 130g / m 2 of a polyethylene terephthalate base material, the basis weight is laminated in the order of 30g / m 2 in a second two-component base Applying a voltage of 15 kV on the first bicomponent substrate of the woven fabric and electrospinning the spinning solution to laminate the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2.5 μm and a fiber diameter of 250 nm. It was. In a flip device located at the rear end of the first unit, the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate, and the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric are laminated in the fabric. The top and bottom of the fabric is flipped 180 ° so that one side of the second bicomponent substrate, which is not bonded to the polyethylene terephthalate substrate, faces the nozzle block. Subsequently, in the second unit, a second high melting point and low melting point polyvinyl having a thickness of 2.5 μm and a fiber diameter of 130 nm was applied by applying an applied voltage of 20 kV to one surface of the second bicomponent substrate facing the nozzle block and continuously spinning the spinning solution. Liden fluoride nanofiber nonwovens were laminated. After electrospinning, the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent base, the polyethylene terephthalate base, the second bicomponent base, the second high melting point and the low melting point polyvinylidene fluoride nano The fabric laminated in the order of fiber nonwoven fabric was heat-sealed in a laminating apparatus to finally prepare a filter. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%.

비교예9Comparative Example 9

실시예 11에 쓰인 폴리에틸렌 테레프탈레이트 기재를 필터 여재로 사용하였다.The polyethylene terephthalate substrate used in Example 11 was used as filter media.

비교예10Comparative Example 10

폴리에틸렌 테레프탈레이트 기재의 양면에 폴리비닐리덴 플루오라이드를 전기방사하여 필터를 제조하였다.A filter was prepared by electrospinning polyvinylidene fluoride on both sides of a polyethylene terephthalate substrate.

상기 실시예11 및 12 및 비교예 9에 의해 제조된 필터의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 9 에 나타내었다.Filtration efficiencies of the filters prepared in Examples 11 and 12 and Comparative Example 9 were measured by the filtration efficiency measurement method, and are shown in Table 9 below.

표 9 실시예11 실시예12 비교예9 0.35㎛ DOP여과효율(%) 90 93 70 Table 9 Example 11 Example 12 Comparative Example 9 0.35㎛ DOP filtration efficiency (%) 90 93 70

이와 같이 본 발명의 실시예11 및 12를 통해 제조된 필터는 비교예9에 비하여 여과효율이 우수함을 알 수 있다.Thus, it can be seen that the filters produced through Examples 11 and 12 of the present invention are superior in filtration efficiency than Comparative Example 9.

또한, 상기 실시예 11 및 12에 의해 제조된 필터와 비교예 9의 압력강하 및 필터수명을 측정하여 표 10에 나타내었다.In addition, the pressure drop and filter life of the filters prepared in Examples 11 and 12 and Comparative Example 9 were measured and shown in Table 10.

표 10 실시예11 실시예12 비교예9 압력강하 (in.w.g) 4.5 4.6 8.9 필터수명 (month) 5.8 5.8 3.0 Table 10 Example 11 Example 12 Comparative Example 9 Pressure drop (in.wg) 4.5 4.6 8.9 Filter life (month) 5.8 5.8 3.0

표 10에 따르면 본 발명의 실시예 11 및 12를 통해 제조된 필터는 비교예9에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 10 it can be seen that the filters manufactured through Examples 11 and 12 of the present invention have a lower pressure drop than Comparative Example 9, resulting in less pressure loss and longer filter life, resulting in superior durability.

또한, 상기 실시예 11 및 12 및 비교예10에 의해 제조된 필터의 나노섬유 부직포의 탈리여부를 상기 측정방법에 의해 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 11 및 12에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 10에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, as a result of measuring the detachment of the nanofiber non-woven fabric of the filter prepared according to Examples 11 and 12 and Comparative Example 10 by the measurement method of the separation of the nanofiber nonwoven fabric and filter substrate, the results in Examples 11 and 12 Desorption of the nanofiber nonwoven fabric did not occur in the filter produced by the filter, but desorption of the nanofiber nonwoven fabric occurred in the filter prepared in Comparative Example 10.

한편, 본 발명의 실시예에서는 기재로 셀룰로오스 기재를 사용하였으나, 본 발명의 다른 실시예에서는 기재로 제1 이성분 기재, 폴리에틸렌 테레프탈레이트(PET)기재, 제2 이성분 기재로 적층된 기재를 사용하는 것이 가능하며, 고분자 방사용액으로는 나일론이 용매에 용해된 나일론 방사용액을 사용하여 필터를 제조하는 것이 가능하다. 여기서, 나일론은 나일론 6, 나일론 66, 나일론 46, 나일론 12 등을 포함한다.Meanwhile, in the embodiment of the present invention, a cellulose substrate is used as a substrate, but in another embodiment of the present invention, a substrate laminated with a first bicomponent substrate, a polyethylene terephthalate (PET) substrate, and a second bicomponent substrate is used as the substrate. As the polymer spinning solution, it is possible to manufacture a filter using a nylon spinning solution in which nylon is dissolved in a solvent. Here, nylon includes nylon 6, nylon 66, nylon 46, nylon 12, and the like.

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1)의 제1 유닛(10a)에서 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트(PET)기재, 제2 이성분 기재로 적층된 기재의 제1 이성분 기재의 일측면에 상기 나일론(Nylon) 방사용액을 전기방사하여 제1 나일론(Nylon) 나노섬유 부직포가 적층형성된다. 여기서, 상기 전기방사장치(1)의 제1 유닛(10a)과 제2 유닛(10b) 사이에 구비되는 플립장치(110)에 의해 상기 제1 유닛(10a)을 통과한 직물의 상,하가 180˚ 회전된다. 이후 제2 유닛(10b)에서 상기 제2 이성분 기재 상에 상기 나일론 방사용액을 전기방사하여 제2 나일론(Nylon) 나노섬유 부직포가 적층형성된다. 따라서, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재 및 제2 이성분 기재의 순서로 적층된 기재의 양면에 제1 및 제2 나일론 나노섬유 부직포가 각각 적층형성된 후, 전기방사장치(1)의 후단에 위치하는 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다.In order to manufacture the filter of the present embodiment, it is manufactured by the manufacturing method as described above, in the first unit 10a of the electrospinning apparatus 1, the first bicomponent substrate, polyethylene terephthalate (PET) substrate, and second isomerism. The first nylon nanofiber nonwoven fabric is laminated by electrospinning the nylon spinning solution on one side of the first bicomponent substrate of the substrate laminated with a powder substrate. Here, the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 degrees. Thereafter, the nylon spinning solution is electrospun on the second bicomponent substrate in the second unit 10b to stack the second nylon nanofiber nonwoven fabric. Therefore, after the first and second nylon nanofiber nonwoven fabrics are laminated on both surfaces of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate and the second bicomponent substrate, the electrospinning apparatus 1 The filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90 located at the rear end.

여기서 전기방사장치(1)의 각 유닛(10a, 10b)마다 방사전압을 달리하거나, 방사 구간의 높이를 다르게 하는 등의 방사 조건을 달리하여 섬유직경이 다른 나노섬유 부직포를 기재의 양면에 적층형성하는 것도 가능하다.Here, nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate by varying spinning conditions such as varying the radiation voltage or the height of the spinning section for each unit 10a, 10b of the electrospinning apparatus 1. It is also possible.

실시예13Example 13

나일론 6을 포름산에 용해시켜 나일론 6 용액을 제조하고, 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 그리고 평량이 30g/m2인 제1 이성분 기재, 평량이 55g/m2인 폴리에틸렌 테레프탈레이트 기재, 평량이 30g/m2인 제2 이성분 기재의 순서로 적층된 직물을 전기방사장치의 컬렉터 상에 위치시켰다. 전기방사장치의 제1 유닛에서는 상기 제1 이성분 기재 상에 상기 나일론 6 용액을 전기방사하여 3㎛ 두께의 제1 나일론 6 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 제2 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제1 이성분 기재 및 제1 나일론 6 나노섬유 부직포의 순서로 적층된 직물에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 제2 이성분 기재의 일면이 노즐블록을 향하도록 직물의 상하를 180° 회전시킨다. 뒤이어 제2 유닛에서는 노즐블록을 향하는 상기 제2 이성분 기재의 일면에 상기 나일론 6 용액을 연속적으로 전기방사하여 3㎛ 두께의 제2 나일론 6 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 상기 폴리에틸렌 테레프탈레이트 기재와 상기 폴리에틸렌 테레프탈레이트 기재의 양면에 적층된 상기 제1 및 2 이성분 기재와 상기 제1 및 2 나일론 6 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조한다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.Nylon 6 was dissolved in formic acid to prepare a nylon 6 solution, which was charged into the spinning solution main tanks of the first and second units of the electrospinning apparatus. And a basis weight of 30g / m 2 in the first two-component base material, a basis weight of 55g / m 2 of polyethylene terephthalate substrate, a basis weight of 30g / m 2 in a second two-component collector of the fabric laminated in the order described electrospinning devices Placed in phase. In the first unit of the electrospinning apparatus, the nylon 6 solution was electrospun on the first bicomponent substrate to laminate a first nylon 6 nanofiber nonwoven fabric having a thickness of 3 μm. The flip device located at the rear end of the first unit is not bonded to the polyethylene terephthalate substrate in the fabric laminated in the order of the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate and the first nylon 6 nanofiber nonwoven fabric. The top and bottom of the fabric is rotated 180 ° so that one side of the second bicomponent substrate is directed toward the nozzle block. Subsequently, in the second unit, the nylon 6 solution was continuously electrospun on one surface of the second bicomponent substrate facing the nozzle block to form a second nylon 6 nanofiber nonwoven fabric having a thickness of 3 μm. After electrospinning, the first and second bicomponent substrates and the first and second nylon 6 nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate are thermally fused in a laminating apparatus to finally filter. Manufacture. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

실시예14Example 14

나일론 6을 포름산에 용해시켜 나일론 6 용액을 제조하고, 전기방사장치의 제1 및 제2 유닛의 방사용액 주탱크에 투입하였다. 그리고 평량이 30g/m2인 제1 이성분 기재, 평량이 55g/m2인 폴리에틸렌 테레프탈레이트 기재, 평량이 30g/m2인 제2 이성분 기재의 순서로 적층된 기재를 전기방사장치의 컬렉터 상에 위치시켰다. 전기방사장치의 제1 유닛에서는 인가전압을 15kV로 부여하여 상기 기재의 제1 이성분 기재 상에 상기 방사용액을 전기방사하여 두께 3㎛, 섬유직경이 250nm인 제1 나일론 6 나노섬유 부직포를 적층형성하였다. 제1 유닛 후단부에 위치한 플립장치에서는 상기 제2 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제1 이성분 기재 및 제1 나일론 6 나노섬유 부직포의 순서로 적층된 직물에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 제2 이성분 기재의 일면이 노즐블록을 향하도록 직물의 상하를 180° 회전시킨다. 뒤이어, 제2 유닛에서는 인가전압을 20kV로 부여하여 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재의 일면에 상기 방사용액을 연속적으로 전기방사하여 두께 3㎛, 섬유직경이 130nm인 제2 나일론 6 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 상기 폴리에틸렌 테레프탈레이트 기재와 상기 폴리에틸렌 테레프탈레이트 기재의 양면에 적층된 제1 및 2 이성분 기재와 제1 및 2 나일론 6 나노섬유 부직포를 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조한다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.Nylon 6 was dissolved in formic acid to prepare a nylon 6 solution, which was charged into the spinning solution main tanks of the first and second units of the electrospinning apparatus. And a basis weight of 30g / m 2 in the first two-component base material, a basis weight of 55g / m 2 of polyethylene terephthalate substrate, a basis weight of 30g / m 2 in a second two-component collector of the electrospinning apparatus of the layered substrate in the order of the base material Placed in phase. In the first unit of the electrospinning apparatus, by applying an applied voltage of 15 kV, the spinning solution is electrospun on the first bicomponent substrate of the substrate to laminate the first nylon 6 nanofiber nonwoven fabric having a thickness of 3 µm and a fiber diameter of 250 nm. Formed. The flip device located at the rear end of the first unit is not bonded to the polyethylene terephthalate substrate in the fabric laminated in the order of the second bicomponent substrate, the polyethylene terephthalate substrate, the first bicomponent substrate and the first nylon 6 nanofiber nonwoven fabric. The top and bottom of the fabric is rotated 180 ° so that one side of the second bicomponent substrate that faces the nozzle block. Subsequently, in the second unit, the spinning solution is continuously electrospun on one surface of the second bicomponent substrate which is not bonded to the polyethylene terephthalate substrate by applying an applied voltage of 20 kV, thereby obtaining a thickness of 3 μm and a fiber diameter of 130 nm. Two nylon 6 nanofiber nonwoven fabrics were laminated. After electrospinning, the first and second bicomponent substrates and the first and second nylon 6 nanofiber nonwoven fabrics laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate are thermally fused in a laminating apparatus to finally prepare a filter. . At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%.

비교예11Comparative Example 11

실시예 13에 쓰인 폴리에틸렌 테레프탈레이트 기재를 필터 여재로 사용하였다.The polyethylene terephthalate substrate used in Example 13 was used as filter media.

비교예12Comparative Example 12

폴리에틸렌 테레프탈레이트 기재의 양면에 나일론 6 을 전기방사하여 필터를 제조하였다.Nylon 6 was electrospun on both sides of a polyethylene terephthalate substrate to prepare a filter.

상기 실시예 13 및 14와 비교예 11의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 11에 나타내었다.Filtration efficiencies of Examples 13 and 14 and Comparative Example 11 were measured by the filtration efficiency measurement method and are shown in Table 11.

표 11 실시예13 실시예14 비교예11 0.35㎛ DOP여과효율 (%) 93 94 71 Table 11 Example 13 Example 14 Comparative Example 11 0.35㎛ DOP filtration efficiency (%) 93 94 71

이와 같이 실시예 13 및 14를 통해 제조된 필터는 비교예 11에 비하여 여과효율이 우수함을 알 수 있다.Thus, it can be seen that the filters prepared through Examples 13 and 14 are superior in filtration efficiency than Comparative Example 11.

또한, 상기 실시예 13 및 14에 의해 제조된 필터와 비교예 11의 압력강하 및 필터수명을 측정하여 표 12에 나타내었다.In addition, the pressure drop and filter life of the filters prepared in Examples 13 and 14 and Comparative Example 11 were measured and shown in Table 12.

표 12 실시예13 실시예14 비교예11 압력강하 (in.w.g) 4.5 4.2 8.5 필터수명 (month) 5.8 6.0 3.2 Table 12 Example 13 Example 14 Comparative Example 11 Pressure drop (in.wg) 4.5 4.2 8.5 Filter life (month) 5.8 6.0 3.2

표 12에 따르면 실시예 13 및 14를 통해 제조된 필터는 비교예11에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 12 it can be seen that the filters produced through Examples 13 and 14 have a lower pressure drop than Comparative Example 11, resulting in less pressure loss and longer filter life, resulting in superior durability.

또한, 상기 실시예 13 및 14 및 비교예12에 의해 제조된 필터를 ASTM D 2724 방법으로 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 13 및 14에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 12에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, as a result of measuring the desorption of the nanofiber nonwoven fabric and the filter substrate by the ASTM D 2724 method of the filters prepared in Examples 13 and 14 and Comparative Example 12, the nanofibers in the filters prepared according to Examples 13 and 14 Desorption of the nonwoven fabric did not occur, but desorption of the nanofiber nonwoven fabric occurred in the filter prepared in Comparative Example 12.

한편, 본 발명의 실시예에서는 기재로 셀룰로오스를 사용하였으나, 본 발명의 또 다른 실시예에서는 기재로 필터에 통상적으로 쓰이는 일반적인 기재를 사용하는 것이 가능하다. 상기 일반적인 기재는 셀룰로오스 기재, PET 기재, 합성섬유, 천연섬유 등을 포함한다. 또한, 사용되는 고분자 방사용액으로 폴리우레탄과 폴리비닐리덴 플루오라이드가 혼합된 방사용액을 사용하는 것이 가능하다. Meanwhile, in the embodiment of the present invention, cellulose is used as the substrate, but in another embodiment of the present invention, it is possible to use a general substrate commonly used in a filter as the substrate. The general substrate includes a cellulose substrate, a PET substrate, synthetic fibers, natural fibers and the like. In addition, it is possible to use a spinning solution in which polyurethane and polyvinylidene fluoride are mixed as the polymer spinning solution used.

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1)의 제1 유닛(10a)에서 기재의 일측면에 상기 폴리우레탄과 폴리비닐리덴 플루오라이드가 혼합되어 용매에 용해된 방사용액을 전기방사하여 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포가 적층형성된다. 여기서, 상기 전기방사장치(1)의 제1 유닛(10a)과 제2 유닛(10b) 사이에 구비되는 플립장치(110)에 의해 상기 제1 유닛(10a)을 통과한 직물의 상,하가 180˚ 회전된다. 이후 제2 유닛(10b)에서 상기 기재의 타측면에 상기 방사용액을 전기방사하여 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포가 적층형성된다. 따라서, 상기 기재의 양면에 제1 및 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포가 각각 적층형성된 후, 전기방사장치(1)의 후단에 위치하는 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다.In order to manufacture the filter of the present embodiment is manufactured by the above-described manufacturing method, the polyurethane and polyvinylidene fluoride is mixed with one side of the substrate in the first unit (10a) of the electrospinning apparatus (1) The spinning solution dissolved therein was electrospun to form a laminate of the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric. Here, the top and bottom of the fabric passing through the first unit (10a) by the flip device 110 provided between the first unit (10a) and the second unit (10b) of the electrospinning apparatus (1) Rotate 180 degrees. Then, the second polyurethane solution and the polyvinylidene fluoride mixed nanofiber nonwoven fabric are formed by electrospinning the spinning solution on the other side of the substrate in the second unit 10b. Accordingly, the first and second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabrics are laminated on both surfaces of the substrate, and then heat-sealed in the laminating apparatus 90 positioned at the rear end of the electrospinning apparatus 1. Through the process, the filter of the present invention is manufactured.

실시예15Example 15

디시클로헥실메탄 4,4-디이소시아네이트를 폴리올과 반응시켜 제조된 폴레우레탄과 중량평균분자량이 디메틸포름산에 50,000인 폴리비닐리덴 플루오라이드를 디메틸포름아미드(dimethylformamide, DMF)에 용해시켜 방사용액을 제조하고 전기방사장치의 각 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 셀룰로오스 기재의 일측면에 상기 방사용액을 전기방사하여 2㎛ 두께의 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 적층형성한다. 전기방사장치의 제1 유닛 후단부에 위치한 플립장치에서는 상기 셀룰로오스 기재 및 적층된 제1 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전시키고 제2 유닛으로 직물을 공급하였다. 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면에 상기 방사용액을 전기방사하여 2㎛ 두께의 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.Polyurethane prepared by reacting dicyclohexyl methane 4,4-diisocyanate with polyol and polyvinylidene fluoride having a weight average molecular weight of 50,000 in dimethyl formic acid were dissolved in dimethylformamide (DMF) to prepare a spinning solution. And into the spinning solution main tank of each unit of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the spinning solution is electrospun on one side of the cellulose substrate to laminate the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric having a thickness of 2 μm. In the flip device located at the rear end of the first unit of the electrospinning apparatus, the top and bottom of the fabric made of the cellulose substrate and the laminated first nanofiber nonwoven fabric were rotated 180 ° and the fabric was supplied to the second unit. In the second unit of the electrospinning apparatus, a second polyurethane having a thickness of 2 μm by electrospinning the spinning solution on the other side of the cellulose base on which the first polyurethane and the polyvinylidene fluoride mixed nanofiber nonwoven fabric are not laminated And polyvinylidene fluoride mixed nanofiber nonwoven fabric. After electrospinning, the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

비교예13Comparative Example 13

실시예 15에 쓰인 셀룰로오스 기재를 필터 여재로 사용하였다.The cellulose substrate used in Example 15 was used as the filter media.

비교예14Comparative Example 14

셀룰로오스 기재의 양면에 폴리비닐리덴 플루오라이드를 전기방사하여 필터를 제조하였다.A polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.

상기 실시예 15와 비교예 13의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 13에 나타내었다. 또한, 상기 실시예 15에 의해 제조된 필터와 비교예 13의 압력강하 및 필터수명을 측정하여 표 14에 나타내었다.The filtration efficiency of Example 15 and Comparative Example 13 was measured by the filtration efficiency measurement method and shown in Table 13. In addition, the pressure drop and filter life of the filter prepared in Example 15 and Comparative Example 13 were measured and shown in Table 14.

표 13 실시예 15 비교예 13 0.35㎛ DOP여과효율(%) 91 70 Table 13 Example 15 Comparative Example 13 0.35㎛ DOP filtration efficiency (%) 91 70

표 14 실시예15 비교예13 압력강하 (in.w.g) 4.5 8.0 필터수명 (month) 5.9 3.5 Table 14 Example 15 Comparative Example 13 Pressure drop (in.wg) 4.5 8.0 Filter life (month) 5.9 3.5

표 13 및 표 14에 따르면, 본 발명의 실시예 15를 통해 제조된 필터는 비교예 13에 비하여 여과효율이 우수하고, 압력손실이 적어 필터수명이 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 13 and Table 14, it can be seen that the filter manufactured through Example 15 of the present invention has better filtration efficiency and less pressure loss than the Comparative Example 13, resulting in longer filter life, resulting in excellent durability.

또한, 상기 실시예 15 및 비교예14에 의해 제조된 필터를 ASTM D 2724 방법으로 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 15에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 14에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, as a result of measuring the detachment of the nanofiber nonwoven fabric and the filter substrate by the ASTM D 2724 method of the filter prepared in Example 15 and Comparative Example 14, the detachment of the nanofiber nonwoven fabric is Although it did not occur, the filter produced in Comparative Example 14 occurred desorption of the nanofiber nonwoven fabric.

한편, 본 발명의 일 실시예에 의한 전기방사장치(1)는 2개의 유닛(10a, 10b)을 구비하고 있으나, 다른 실시예에서는 4개의 유닛(10a, 10b, 10c, 10d)을 구비하는 것도 가능하다. 즉, 도 16에서 도시하고 있는 바와 같이, 전기방사장치(1')는 4개의 유닛(10a, 10b, 10c, 10d)을 구비하고, 전단부의 두 개의 유닛(10a, 10b)과 후단부의 두 개의 유닛(10c, 10d) 사이에는 직물을 회전시키는 플립장치(110)가 구비되어 직물의 상부면이 하부면으로 위치가 변경되고, 하부면은 상부면으로 위치가 변경된다. 즉, 전단부의 두 개의 유닛(10a, 10b)을 통해 기재 상에 방사용액이 전기방사되어 나노섬유 부직포가 적층형성되고, 플립장치(110)를 통해 직물의 상,하가 180˚ 회전된다. 회전된 직물은 후단부의 두 개의 유닛(10c, 10d)에서 방사용액이 전기방사되어 상기 기재의 타측면에 나노섬유 부직포가 적층형성된다. 이후, 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다.Meanwhile, although the electrospinning apparatus 1 according to an embodiment of the present invention includes two units 10a and 10b, another embodiment includes four units 10a, 10b, 10c, and 10d. It is possible. That is, as shown in FIG. 16, the electrospinning apparatus 1 'is provided with four units 10a, 10b, 10c, and 10d, and the two units 10a and 10b of the front end and the two of the rear end are shown. Between the units (10c, 10d) is provided with a flip device 110 for rotating the fabric, the upper surface of the fabric is changed position to the lower surface, the lower surface is changed position to the upper surface. That is, the spinning solution is electrospun on the substrate through the two units 10a and 10b of the front end portion, thereby forming a nanofiber nonwoven fabric laminated, and rotating the fabric 180 degrees through the flip device 110. The rotated fabric is electrospun into the spinning solution in the two units 10c and 10d at the rear end so that the nanofiber nonwoven fabric is laminated on the other side of the substrate. Then, the filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90.

상기 각 유닛(10a, 10b, 10c, 10d)은 동일한 고분자 방사용액을 개별적으로 전기방사하거나, 재질이 상이한 고분자 방사용액을 개별적으로 전기방사하여 부직포 등의 필터 소재를 제조한다. 이 때, 상기 각 유닛(10a, 10b, 10c, 10d)은 각 유닛마다 전압발생장치(14a, 14b, 14c, 14d)가 구비된다. Each of the units 10a, 10b, 10c, and 10d electrospins the same polymer spinning solution, or electrospins the polymer spinning solution of different materials to produce a filter material such as a nonwoven fabric. At this time, each of the units (10a, 10b, 10c, 10d) is provided with a voltage generator (14a, 14b, 14c, 14d) for each unit.

이하, 상기 전기방사장치(1')를 통하여 본 실시예의 필터를 제조하는 방법을 설명한다. 본 실시예에서는 상기 전기방사장치(1')의 각 유닛(10a, 10b, 10c, 10d)에서의 전기방사전압을 다르게 설정하여, 각 유닛(10a, 10b, 10c, 10d)마다 섬유직경이 다른 폴리비닐리덴 플루오라이드 나노섬유 부직포가 형성된다. 즉, 방사전압을 낮게 부여한 제1 유닛(10a)에서는 섬유직경이 150 내지 200nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 형성되고, 방사전압을 높게 부여한 제2 유닛(10b)에서는 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 형성되며, 방사전압을 낮게 부여한 제3 유닛(10c)에서는 섬유직경이 150 내지 200nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포가 형성되고, 방사전압을 높게 부여한 제4 유닛(10d)에서는 섬유직경이 100 내지 150nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포가 형성된다. Hereinafter, a method of manufacturing the filter of the present embodiment through the electrospinning apparatus 1 'will be described. In this embodiment, the electrospinning voltages of the units 10a, 10b, 10c, and 10d of the electrospinning apparatus 1 'are set differently so that the fiber diameters are different for each unit 10a, 10b, 10c, and 10d. Polyvinylidene fluoride nanofiber nonwovens are formed. That is, in the first unit 10a having a low radiation voltage, a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is formed, and in the second unit 10b having a high radiation voltage, the fiber diameter is A second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 100 to 150 nm is formed, and a third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is formed in the third unit 10c having a low radiation voltage. In the fourth unit 10d having a high radiation voltage, a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is formed.

한편, 상기 전기방사장치(1')의 제2 유닛(10b)과 제3 유닛(10c) 사이에 구비되는 플립장치(110)에 의해 상기 제1 유닛(10a) 및 제2 유닛(10b)을 통과한 직물의 상,하가 180° 회전된다. 즉, 제1 유닛(10a)에서는 기재의 일측면에 섬유직경이 150 내지 200nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되며, 제2 유닛(10b)에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 상기 제1 유닛(10a)과 제2 유닛(10b)을 통과한 상기 기재, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이루어진 직물은 플립장치(110)에 공급되며, 상기 직물의 상부면은 하부면으로 위치가 변경되고, 상기 직물의 하부면은 상부면으로 위치가 변경되도록 직물의 상,하가 180°로 회전된다. 다시 말해, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면이 상기 전기방사장치(1')의 노즐블록(11)을 향하도록 직물의 상,하가 180° 회전된다. 이후 제3유닛(10c)에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 섬유직경이 150 내지 200nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되고, 제4 유닛(10d)에서는 상기 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 섬유직경이 100 내지 150nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. Meanwhile, the first unit 10a and the second unit 10b are moved by the flip device 110 provided between the second unit 10b and the third unit 10c of the electrospinning apparatus 1 '. The top and bottom of the fabric passed through is rotated 180 °. That is, in the first unit 10a, a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on one side of the substrate, and in the second unit 10b, the first polyvinylidene fluorine is formed. A second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the ride nanofiber nonwoven fabric. The fabric consisting of the substrate, the first polyvinylidene fluoride nanofiber nonwoven fabric, and the second polyvinylidene fluoride nanofibre nonwoven fabric passed through the first unit 10a and the second unit 10b may be flipped. 110, the upper surface of the fabric is repositioned to the lower surface, the lower surface of the fabric is rotated to 180 ° so that the top and bottom of the fabric is changed to the upper surface. In other words, the top and bottom of the fabric rotate 180 ° so that the other side of the base material on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated is directed toward the nozzle block 11 of the electrospinning apparatus 1 '. do. Thereafter, in the third unit 10c, a third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on the other side of the substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. In the fourth unit 10d, a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric.

한편, 상기 방사용액 주탱크(8)에 공급되는 방사용액은 본 발명에서는 폴리비닐리덴 플루오라이드를 유기 용매에 녹인 폴리비닐리덴 플루오라이드 용액을 사용하였으나, 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액을 사용하는 것이 가능하다. Meanwhile, in the present invention, the spinning solution supplied to the spinning solution main tank 8 uses a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in an organic solvent, but a solution in which polyvinylidene fluoride and hot melt are mixed. It is possible to use

또한 폴리비닐리덴 플루오라이드 용액과 핫멜트 용액을 각 유닛마다 다르게 구비하여 사용하는 것도 가능하다. 여기서, 핫멜트는 폴리비닐리덴 플루오라이드계 핫멜트를 사용하며, 상기 핫멜트는 폴리비닐리덴 플루오라이드 나노섬유 부직포와 셀룰로오스 기재 사이에 접착제의 역할을 함으로, 나노섬유 부직포와 기재가 떨어지는 것을 방지할 수 있다.It is also possible to use polyvinylidene fluoride solution and hot melt solution differently provided for each unit. Here, the hot melt uses a polyvinylidene fluoride-based hot melt, and the hot melt serves as an adhesive between the polyvinylidene fluoride nanofiber nonwoven fabric and the cellulose substrate, thereby preventing the nanofiber nonwoven fabric and the substrate from falling off.

한편, 본 발명에서는 상기 제1 유닛(10a)에 전압을 공급하는 전압 발생장치(14a)와 제3 유닛(10c)에 전압을 공급하는 전압 발생장치(14c)에 방사전압을 낮게 부여하여 섬유직경이 150 내지 200nm인 제1 및 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포를 형성하고, 상기 제2 유닛(10b)에 전압을 공급하는 전압 발생장치(14b)와 제4 유닛(10d)에 전압을 공급하는 전압발생장치(14d)에 방사전압을 높게 부여하여 섬유직경이 100 내지 150nm인 제2 및 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포를 형성하는 것을 특징으로 한다.On the other hand, in the present invention, the radiation diameter is applied to the voltage generator 14a for supplying the voltage to the first unit 10a and the voltage generator 14c for supplying the voltage to the third unit 10c, thereby lowering the fiber diameter. The first and third polyvinylidene fluoride nanofiber nonwoven fabrics having 150 to 200 nm are formed, and a voltage is applied to the voltage generator 14b and the fourth unit 10d for supplying the voltage to the second unit 10b. It is characterized in that the second and fourth polyvinylidene fluoride nanofiber nonwoven fabrics having a fiber diameter of 100 to 150 nm are formed by applying a high radiation voltage to the supplied voltage generator 14d.

또한, 상기 전기방사장치(1')의 유닛의 개수를 5개 이상으로 구성하고 각 유닛마다 전압을 달리하여 섬유직경이 다른 3개 이상의 폴리비닐리덴 플루오라이드 나노섬유 부직포를 기재의 양면에 적층형성시킨 필터를 제조하는 것도 가능하다.In addition, the number of units of the electrospinning apparatus 1 'is 5 or more, and the voltage is varied for each unit so that at least three polyvinylidene fluoride nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate. It is also possible to produce a filter.

본 발명의 일 실시예에서는 폴리비닐리덴 플루오라이드 나노섬유 부직포의 섬유직경구배를 부여하기 위해 각 유닛(10a, 10b, 10c, 10d)마다 부여하는 전압의 세기를 달리하는 방식을 사용하였으나, 노즐(12)과 컬렉터(13) 사이 간격을 조절하여 섬유직경의 구배가 있는 나노섬유 부직포를 형성할 수 있다. 이 경우, 방사용액의 종류 및 공급되는 전압 세기가 동일할 때, 방사거리가 가까울수록 섬유직경은 커지고, 방사거리가 멀수록 섬유직경은 작아지는 원리에 따라 섬유직경 구배가 부여된 나노섬유 부직포가 형성되는 것도 가능하다. 그리고, 방사용액의 농도 및 점도를 조절하거나, 장척시트의 이동속도를 조절함으로 섬유직경의 구배를 두는 것도 가능하다. In an embodiment of the present invention, in order to impart a fiber diameter gradient of the polyvinylidene fluoride nanofiber nonwoven fabric, a method of varying the intensity of voltage applied to each unit 10a, 10b, 10c, and 10d is used. 12) and the collector 13 may be adjusted to form a nanofiber nonwoven fabric having a gradient of fiber diameter. In this case, when the type of spinning solution and the voltage intensity supplied are the same, the closer the spinning distance, the larger the fiber diameter, and the longer the spinning distance, the smaller the fiber diameter. It is also possible to form. In addition, by adjusting the concentration and viscosity of the spinning solution, or by adjusting the moving speed of the elongated sheet it is possible to place a gradient of the fiber diameter.

상기와 같은 방법으로 전기방사장치(1')의 제1 유닛(10a)에서는 기재의 일측면에 섬유직경이 150 내지 200nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되며, 제2 유닛(10b)에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 상기 제1 유닛(10a)과 제2 유닛(10b)을 통과한 상기 기재, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이루어진 직물은 플립장치(110)에 공급되며, 상기 직물의 상단부는 하단부로 위치가 변경되고, 상기 직물의 하단부는 상단부로 위치가 변경되도록 직물의 상,하가 180°로 회전된다. 다시 말해, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면이 상기 전기방사장치(1')의 노즐블록(11)을 향하도록 직물의 상,하가 180° 회전된다. 이후 제3유닛(10c)에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 섬유직경이 150 내지 200nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되고, 제4 유닛(10d)에서는 상기 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 섬유직경이 100 내지 150nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 이후, 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터가 제조된다. In the same manner as described above, in the first unit 10a of the electrospinning apparatus 1 ', a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on one side of the substrate, and the second unit In 10b, a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the first polyvinylidene fluoride nanofiber nonwoven fabric. The fabric consisting of the substrate, the first polyvinylidene fluoride nanofiber nonwoven fabric, and the second polyvinylidene fluoride nanofibre nonwoven fabric passed through the first unit 10a and the second unit 10b may be flipped. 110, the upper end of the fabric is changed in position to the lower end, the lower end of the fabric is rotated by 180 °, the top and bottom of the fabric so that the position is changed to the upper end. In other words, the top and bottom of the fabric rotate 180 ° so that the other side of the base material on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated is directed toward the nozzle block 11 of the electrospinning apparatus 1 '. do. Thereafter, in the third unit 10c, a third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm is laminated on the other side of the substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated. In the fourth unit 10d, a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm is laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric. Then, the filter of the present invention is manufactured through a process of heat fusion in the laminating apparatus 90.

실시예16Example 16

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드(N,N-Dimethylacetamide, DMAc)에 용해시켜 방사용액을 제조하고, 전기방사장치의 제1, 제2, 제3 및 제4 유닛의 방사용액 주탱크에 투입하였다. 전기방사장치의 제1 유닛에서는 인가전압을 17kV로 부여하여 셀룰로오스 기재의 일측면에 상기 방사용액을 전기방사하여 두께 2㎛, 섬유직경 170nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제2 유닛에서는 인가전압을 20kV로 부여하여 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 두께 2㎛, 섬유직경 130nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제2 유닛 후단부에 위치한 플립장치에서는 상기 셀룰로오스 기재와 상기 셀룰로오스 기재의 일면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 직물에서 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되지 않은 셀룰로오스 기재의 타측면이 상기 전기방사장치의 노즐블록을 향하도록 직물의 상하를 180° 회전시킨다. 전기방사장치 제3 유닛에서는 인가전압을 17kV로 부여하여 상기 노즐블록을 향하고 있는 상기 셀룰로오스 기재의 일면에 상기 방사용액을 전기방사하여 두께 2㎛, 섬유직경 170nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제4 유닛에서는 인가전압을 20kV로 부여하여 상기 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 두께 2㎛, 섬유직경 130nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다. 전기방사후에는 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다.A polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide (N, N-Dimethylacetamide, DMAc) to prepare a spinning solution, and the first, second, third, and third agents of the electrospinning apparatus 4 units of spinning solution were added to the main tank. In the first unit of the electrospinning apparatus, an applied voltage was applied at 17 kV to electrospin the spinning solution on one side of the cellulose substrate to form a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 μm and a fiber diameter of 170 nm. . In the second unit of the electrospinning apparatus, a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 μm and a fiber diameter of 130 nm was laminated on the first polyvinylidene fluoride nanofiber nonwoven fabric by applying an applied voltage of 20 kV. . In a flip device located at the rear end of the second unit, the first polyvinylidene fluoride nanofiber in a fabric including the cellulose substrate and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on one surface of the cellulose substrate. The top and bottom of the fabric is rotated 180 ° so that the other side of the cellulose substrate, on which the nonwoven fabric is not laminated, faces the nozzle block of the electrospinning apparatus. In the third unit of the electrospinning apparatus, a third polyvinylidene fluoride nanofiber having a thickness of 2 μm and a fiber diameter of 170 nm is formed by electrospinning the spinning solution on one surface of the cellulose substrate facing the nozzle block by applying an applied voltage of 17 kV. The nonwoven fabric was laminated. In the fourth unit of the electrospinning apparatus, a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 μm and a fiber diameter of 130 nm was laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric by applying an applied voltage of 20 kV. . At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%. After electrospinning, the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter.

실시예17Example 17

중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드와, 수평균 분자량이 3,000인 핫멜트용 폴리비닐리덴 플루오라이드 수지를 디메틸아세트아미드(N,N-Dimethylacetamide, DMAc)에 용해시켜 방사용액을 제조하고 전기방사장치의 제1, 제2, 제3 및 제4 유닛의 방사용액 주탱크에 투입하는 것 이외에는 실시예 1과 동일한 조건으로 필터를 제조하였다.A spinning solution was prepared by dissolving polyvinylidene fluoride having a weight average molecular weight (Mw) of 50,000 and polyvinylidene fluoride resin for hot melt having a number average molecular weight of 3,000 in dimethylacetamide (N, N-Dimethylacetamide, DMAc). The filter was manufactured under the same conditions as in Example 1 except that the first, second, third and fourth units of the electrospinning apparatus were put in the spinning solution main tank.

비교예15Comparative Example 15

실시예 16에 쓰인 셀룰로오스 기재를 필터 여재로 사용하였다.The cellulose substrate used in Example 16 was used as the filter media.

비교예16Comparative Example 16

셀룰로오스 기재의 양면에 폴리비닐리덴 플루오라이드를 전기방사하여 필터를 제조하였다.A polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.

상기 실시예 16 및 17과 비교예 15의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 15에 나타내었다.Filtration efficiencies of Examples 16 and 17 and Comparative Example 15 were measured by the filtration efficiency measurement method and are shown in Table 15.

표 15 실시예 16 실시예 17 비교예 15 0.35㎛ DOP여과효율(%) 92 93 70 Table 15 Example 16 Example 17 Comparative Example 15 0.35㎛ DOP filtration efficiency (%) 92 93 70

표 15에 따르면 본 발명의 실시예16 및 17을 통해 제조된 필터는 비교예 15에 비하여 여과효율이 우수함을 알 수 있다.According to Table 15 it can be seen that the filter produced through Examples 16 and 17 of the present invention is superior in filtration efficiency than Comparative Example 15.

또한, 상기 실시예 16 및 17에 의해 제조된 필터와 비교예 15의 압력강하 및 필터수명을 측정하여 표 16에 나타내었다.In addition, the pressure drop and filter life of the filters prepared in Examples 16 and 17 and Comparative Example 15 were measured and shown in Table 16.

표 16 실시예 16 실시예17 비교예 15 압력강하 (in.w.g) 4.6 4.5 9.0 필터수명 (month) 5.8 5.8 3.0 Table 16 Example 16 Example 17 Comparative Example 15 Pressure drop (in.wg) 4.6 4.5 9.0 Filter life (month) 5.8 5.8 3.0

표 16에 따르면 본 발명의 실시예 16 및 17을 통해 제조된 필터는 비교예15에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 16 it can be seen that the filters manufactured through Examples 16 and 17 of the present invention have a lower pressure drop than Comparative Example 15, resulting in less pressure loss and longer filter life, resulting in superior durability.

또한, 상기 실시예 16 및 17 및 비교예16에 의해 제조된 필터의 나노섬유 부직포의 탈리여부를 상기 측정방법에 의해 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 16 및 17에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 16에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, as a result of measuring the detachment of the nanofiber nonwoven fabric of the filter prepared according to Examples 16 and 17 and Comparative Example 16 by the measurement method of the separation of the nanofiber nonwoven fabric and filter substrate, the results in Examples 16 and 17 Desorption of the nanofiber nonwoven fabric did not occur in the filter produced by the filter, but desorption of the nanofiber nonwoven fabric occurred in the filter prepared in Comparative Example 16.

한편, 본 발명의 일 실시예에서는 기재 양면에 섬유직경이 다른 두 층의 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였으나, 다른 실시예로 기재에 저융점 폴리비닐리덴 플루오라이드(PVDF) 나노섬유 부직포와 고융점 폴리비닐리덴 플루오라이드(PVDF) 나노섬유 부직포를 각각 적층형성하는 것도 가능하다. Meanwhile, in one embodiment of the present invention, two layers of polyvinylidene fluoride nanofiber nonwoven fabrics having different fiber diameters are laminated on both sides of the substrate, but in another embodiment, low melting point polyvinylidene fluoride (PVDF) nanofibers are formed on the substrate. It is also possible to laminate a nonwoven fabric and a high melting point polyvinylidene fluoride (PVDF) nanofiber nonwoven fabric, respectively.

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1')의 전압공급장치(14a, 14b, 14c, 14d)의 공급전압을 동일하게 한 조건에서, 제1 유닛(10a) 및 제3 유닛(10c)에서는 저융점 폴리비닐리덴 플루오라이드 방사용액을 전기방사하고, 제2 유닛(10b) 및 제4 유닛(10d)에서는 고융점 폴리비닐리덴 플루오라이드 방사용액을 전기방함으로 필터를 제조한다. In order to manufacture the filter of the present embodiment, it is manufactured by the above-described manufacturing method, but under the condition that the supply voltages of the voltage supply devices 14a, 14b, 14c, 14d of the electrospinning device 1 'are the same, The low melting point polyvinylidene fluoride spinning solution is electrospun in the unit 10a and the third unit 10c, and the high melting point polyvinylidene fluoride spinning solution is in the second unit 10b and the fourth unit 10d. The filter is manufactured with an electric chamber.

여기서, 상기 방사용액은 핫멜트를 포함하여 전기방사함으로 필터를 제조하는 것도 가능하다.Here, the spinning solution may be prepared by the electrospinning including the hot melt.

본 실시예에서는 저융점 폴리비닐리덴 플루오라이드를 사용함으로서 열융착 시, 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 일부 녹게되어 기재와 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 사이에 접착제와 같은 역할을 함으로 기재와 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 탈리를 방지한다.In this embodiment, the low melting point polyvinylidene fluoride is used to partially melt the low melting point polyvinylidene fluoride nanofiber nonwoven fabric during thermal welding, thereby acting as an adhesive between the substrate and the high melting point polyvinylidene fluoride nanofiber nonwoven fabric. By preventing the detachment of the substrate and the high melting point polyvinylidene fluoride nanofiber nonwoven fabric.

상기와 같은 방법으로 전기방사장치(1')의 제1 유닛(10a)에서 상기 기재의 일측면에 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되고, 제2 유닛(10b)에서 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된 후, 상기 기재, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물이 플립장치(110)를 통과하면서 직물의 상하가 180° 회전된다. 이후 제3 유닛(10c)에서 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되고, 상기 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 상기 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 기재, 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물은 라미네이팅 장치(90)에서 열융착하는 과정을 거쳐 본 발명의 필터로 제조된다.The first low melting polyvinylidene fluoride nanofiber nonwoven fabric is laminated on one side of the substrate in the first unit 10a of the electrospinning apparatus 1 'by the above-described method, and in the second unit 10b. After the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated on the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the substrate, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the first The fabric laminated in the order of the high melting point polyvinylidene fluoride nanofiber nonwoven fabric is rotated 180 ° while passing through the flip device 110. Thereafter, a second low melting polyvinylidene fluoride nanofiber nonwoven fabric is laminated on the other side of the substrate on which the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric is not laminated in the third unit 10c, and the second unit 10c A second high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated on the low melting point polyvinylidene fluoride nanofiber nonwoven fabric. The first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the substrate, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric and the second high melting point polyvinylidene fluoride Fabrics laminated in the order of the ride nanofiber nonwoven fabric are manufactured by the filter of the present invention through a process of heat fusion in the laminating apparatus 90.

실시예18Example 18

중량평균분자량이 5,000인 저융점 폴리비닐리덴 플루오라이드를 디메틸 아세트아미드에 용해시켜 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 공급하고, 중량평균분자량이 50,000인 고융점 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 고융점 폴리비닐리덴 플루오라이드 용액을 제조하여 전기방사장치의 제 2 및 제4 유닛의 방사용액 주탱크에 공급하였다. 전기방사장치의 제1 유닛에서는 평량이 100g/m2인 셀룰로오스 기재의 일측면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제2 유닛에서는 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제2 유닛 후단부에 위치한 플립장치에서는 상기 셀룰로오스 기재, 제1 저융점 폴리비닐리덴 플루오라이드 및 제1 고융점 폴리비닐리덴 플루오라이드의 순서로 적층된 직물에서 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않는 상기 셀룰로오스 기재의 타측면이 노즐블록을 향하도록 직물의 상하를 180° 회전시킨다. 뒤이어 전기방사장치의 제3 유닛에서는 노즐블록을 향하는 상기 셀룰로오스 기재의 타측면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성한다. 전기방사장치의 제4 유닛에서는 상기 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성한다. 전기방사 후에는 상기 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 셀룰로오스 기재, 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.A low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 was dissolved in dimethyl acetamide to supply a low melting point polyvinylidene fluoride solution to the spinning solution main tanks of the first and third units of the electrospinning apparatus, A high melting point polyvinylidene fluoride having a molecular weight of 50,000 was dissolved in dimethylacetamide to prepare a high melting point polyvinylidene fluoride solution and supplied to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the low melting point polyvinylidene fluoride solution was electrospun on one side of a cellulose substrate having a basis weight of 100 g / m 2 to form a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric. . In the second unit of the electrospinning apparatus, a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the high melting point polyvinylidene fluoride solution on the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric. Formed. In a flip device located at the rear end of the second unit, the first low melting point polyvinylidene fluoride in the fabric laminated in the order of the cellulose base, the first low melting point polyvinylidene fluoride, and the first high melting point polyvinylidene fluoride The top and bottom of the fabric is rotated 180 ° so that the other side of the cellulose substrate, which is not bonded to the nanofiber nonwoven fabric, faces the nozzle block. Subsequently, in the third unit of the electrospinning apparatus, the low melting polyvinylidene fluoride solution is electrospun on the other side of the cellulose substrate facing the nozzle block to form a second low melting polyvinylidene fluoride nanofiber nonwoven fabric. In the fourth unit of the electrospinning apparatus, a second high melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the high melting point polyvinylidene fluoride solution on the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric. Form. After electrospinning, the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the cellulose base, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the second high melting point polyvinylidene fluoride nanofiber nonwoven fabric Fabrics laminated in the order of the melting point polyvinylidene fluoride nanofiber nonwoven fabric were thermally fused in a laminating apparatus to finally prepare a filter. At this time, the electrospinning was carried out under the conditions of 40cm, applied voltage 20kV, spinning solution flow rate 0.1mL / h, temperature 22 ℃, humidity 20% between the electrode and the collector.

실시예19Example 19

중량평균분자량이 5,000인 저융점 폴리비닐리덴 플루오라이드를 디메틸 아세트아미드에 용해시켜 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 공급하고, 중량평균분자량이 50,000인 고융점 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 고융점 폴리비닐리덴 플루오라이드 용액을 제조하여 전기방사장치의 제 2 및 제4 유닛의 방사용액 주탱크에 공급하였다. 전기방사장치의 제1 유닛에서는 인가전압을 17kV로 부여하여 셀룰로오스 기재의 일측면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 두께 2㎛, 섬유직경이 200nm인 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제2 유닛에서는 인가전압을 20kV로 부여하여 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 두께 2㎛, 섬유직경 130nm인 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제2 유닛 후단부에 위치한 플립장치에서는 상기 셀룰로오스 기재와 이의 일측면에 적층형성된 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포와 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 직물에서 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되지 않은 상기 셀룰로오스 기재의 타측면이 전기방사장치의 노즐블록을 향하도록 직물의 상하를 180° 회전시킨다. 뒤이어 전기방사장치의 제3 유닛에서는 인가전압을 17kV로 부여하여 상기 노즐블록을 향하는 상기 셀룰로오스 기재의 일면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 두께 2㎛, 섬유직경이 200nm인 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제4 유닛에서는 인가전압을 20kV로 부여하여 상기 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 두께 2㎛, 섬유직경 130nm인 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다. 전기방사 후에는 상기 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 셀룰로오스 기재, 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. A low melting point polyvinylidene fluoride having a weight average molecular weight of 5,000 was dissolved in dimethyl acetamide to supply a low melting point polyvinylidene fluoride solution to the spinning solution main tanks of the first and third units of the electrospinning apparatus, A high melting point polyvinylidene fluoride having a molecular weight of 50,000 was dissolved in dimethylacetamide to prepare a high melting point polyvinylidene fluoride solution and supplied to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the low melting point polyvinylidene fluoride solution is electrospun on one side of a cellulose substrate by applying an applied voltage of 17 kV to form a first low melting point polyvinylidene having a thickness of 2 μm and a fiber diameter of 200 nm. Fluoride nanofiber nonwoven fabrics were laminated. In the second unit of the electrospinning apparatus, an applied voltage is applied at 20 kV to electrospin the high melting point polyvinylidene fluoride solution on the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric to obtain a thickness of 2 μm and a fiber diameter of 130 nm. The first high melting point polyvinylidene fluoride nanofiber nonwoven fabric was laminated. The flip device located at the rear end of the second unit of the electrospinning apparatus comprises a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric and a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated on the cellulose substrate and one side thereof. Rotating the top and bottom of the fabric 180 ° so that the other side of the cellulose substrate on which the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric is not laminated in the fabric includes the nozzle block of the electrospinning apparatus. Subsequently, in the third unit of the electrospinning apparatus, the low melting point polyvinylidene fluoride solution is electrospun onto one surface of the cellulose substrate facing the nozzle block by applying an applied voltage of 17 kV, and the second diameter and the fiber diameter are 200 nm. 2 Low melting polyvinylidene fluoride nanofiber nonwoven fabric was laminated. In the fourth unit of the electrospinning apparatus, an applied voltage is applied at 20 kV to electrospin the high melting point polyvinylidene fluoride solution on the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric to obtain a thickness of 2 μm and a fiber diameter of 130 nm. A phosphorus second high melting point polyvinylidene fluoride nanofiber nonwoven fabric was laminated. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%. After electrospinning, the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the cellulose base, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and the second high melting point polyvinylidene fluoride nanofiber nonwoven fabric Fabrics laminated in the order of the melting point polyvinylidene fluoride nanofiber nonwoven fabric were thermally fused in a laminating apparatus to finally prepare a filter.

비교예17Comparative Example 17

실시예 18에 쓰인 셀룰로오스 기재를 필터 여재로 사용하였다.The cellulose substrate used in Example 18 was used as the filter media.

비교예18Comparative Example 18

셀룰로오스 기재의 양면에 폴리비닐리덴 플루오라이드를 전기방사하여 필터를 제조하였다.A polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.

상기 실시예 18 및 19와 비교예 17의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 17에 나타내었다.The filtration efficiency of Examples 18 and 19 and Comparative Example 17 was measured by the filtration efficiency measurement method and shown in Table 17.

표 17 실시예18 실시예19 비교예17 0.35㎛ DOP 여과효율 (%) 91 92 70 Table 17 Example 18 Example 19 Comparative Example 17 0.35㎛ DOP Filtration Efficiency (%) 91 92 70

이와 같이 본 발명의 실시예 18 및 19를 통해 제조된 필터는 비교예 17에 비하여 여과효율이 우수함을 알 수 있다.Thus, it can be seen that the filters produced through Examples 18 and 19 of the present invention have superior filtration efficiency than Comparative Example 17.

또한, 상기 실시예 18 및 19에 의해 제조된 필터와 비교예 17의 압력강하 및 필터수명을 측정하여 표 18에 나타내었다.In addition, the pressure drop and filter life of the filters prepared in Examples 18 and 19 and Comparative Example 17 were measured and shown in Table 18.

표 18 실시예18 실시예19 비교예17 압력강하 (in.w.g) 4.5 4.3 8.0 필터수명 (month) 5.9 6.0 3.5 Table 18 Example 18 Example 19 Comparative Example 17 Pressure drop (in.wg) 4.5 4.3 8.0 Filter life (month) 5.9 6.0 3.5

표 18에 따르면 본 발명의 실시예 18 및 19를 통해 제조된 필터는 비교예17에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 18, the filters manufactured through Examples 18 and 19 of the present invention have a lower pressure drop than Comparative Example 17, resulting in less pressure loss and longer filter life, resulting in superior durability.

또한, 상기 실시예 18와 19 및 비교예18에 의해 제조된 필터의 나노섬유 부직포의 탈리여부를 상기 측정방법에 의해 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 18 및 19에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 18에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, as a result of measuring the detachment of the nanofiber nonwoven fabric of the filter prepared in Examples 18 and 19 and Comparative Example 18 by the measurement method of the separation of the nanofiber nonwoven fabric and filter substrate, the results in Examples 18 and 19 Desorption of the nanofiber nonwoven fabric did not occur in the filter produced by the filter, but desorption of the nanofiber nonwoven fabric occurred in the filter prepared in Comparative Example 18.

한편, 본 발명의 일 실시예에서는 기재의 양면에 폴리비닐리덴 플루오라이드 나노섬유 부직포가 각각 2층씩 적층되고 있으나, 또 다른 실시예로 기재의 양면에 나일론 나노섬유 부직포와 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성시키는 것이 가능하다. Meanwhile, in one embodiment of the present invention, two layers of polyvinylidene fluoride nanofiber nonwoven fabric are laminated on both sides of the substrate, but in another embodiment, nylon nanofiber nonwoven fabric and polyvinylidene fluoride nanofiber are laminated on both sides of the substrate. It is possible to laminate the nonwoven fabric.

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 먼저, 나일론을 유기 용매에 녹인 나일론 용액을 전기방사장치(1')의 제1 유닛(10a) 및 제3 유닛(10c)과 연결된 방사용액 주탱크(8)에 공급하고, 폴리비닐리덴 플루오라이드를 유기 용매에 녹인 폴리비닐리덴 플루오라이드 용액을 전기방사장치의 제2 유닛(10b) 및 제4 유닛(10d)과 연결된 방사용액 주탱크(8)에 공급한다. 각 유닛(10a, 10b, 10c, 10d)과 연결된 방사용액 주탱크(8)는 계량 펌프(미도시)를 통하여 상기 유닛(10a, 10b, 10c, 10d) 내의 연결되고 높은 전압이 부여되는 노즐블록(11)의 노즐(12) 내에 각각 연속적으로 정량공급된다. 상기 전기방사장치(1')의 제1 유닛(10a)에서는 상기 나일론 용액이 상기 기재 상에 전기방사되어 제1 나일론 나노섬유 부직포를 적층형성한다. 이때 제1 유닛(10a)의 전압 발생장치(14a)에 높은 전압을 부여하여 제1 나일론 나노섬유 부직포의 섬유직경이 100 내지 150nm이 되도록 한다. 제2 유닛(10b)에서는 상기 폴리비닐리덴 플루오라이드 용액이 상기 제1 나일론 나노섬유 부직포 상에 전기방사되어 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성한다. 이때 제2 유닛(10b)의 전압 발생장치에 높은 전압을 부여하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포의 섬유직경이 80 내지 150nm가 되도록 한다. 이후, 상기 전기방사장치(1')의 제2 유닛(10b) 후단에 구비되는 플립장치(110)에 의해 상기 기재, 상기 제1 나일론 나노섬유 부직포 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이루어진 직물의 상, 하가 180° 회전된다. 즉, 상기 직물의 상단부는 하단부로 위치가 변경되고, 상기 직물의 하단부는 상단부로 위치가 변경되도록 회전한다. 다시 말해, 상기 제1 나일론 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면이 상기 전기방사장치(1')의 노즐블록(11)을 향하도록 직물의 상, 하가 180° 회전된다. 이후 제3 유닛(10c)에서는 상기 나일론 용액이 상기 기재의 타측면 상에 높은 전압으로 전기방사되어 섬유직경이 100 내지 150nm인 제2 나일론 나노섬유 부직포를 적층형성한다. 제4 유닛(10d)에서는 상기 제2 나일론 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액이 높은 전압으로 전기방사되어 섬유직경이 80 내지 100nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되어 필터가 제조된다.In order to manufacture the filter of the present embodiment is manufactured by the above-described manufacturing method, first, the nylon solution in which the nylon is dissolved in an organic solvent, the first unit 10a and the third unit 10c of the electrospinning apparatus 1 '. The polyvinylidene fluoride solution in which the polyvinylidene fluoride was dissolved in an organic solvent was connected to the second unit 10b and the fourth unit 10d of the electrospinning apparatus. Supply to the working liquid main tank (8). The spinning solution main tank 8 connected to each of the units 10a, 10b, 10c, and 10d is connected to a nozzle block to which a high voltage is applied in the units 10a, 10b, 10c, and 10d through a metering pump (not shown). Each of the nozzles 12 of 11 is continuously metered. In the first unit 10a of the electrospinning apparatus 1 ', the nylon solution is electrospun on the substrate to form a first nylon nanofiber nonwoven fabric. At this time, a high voltage is applied to the voltage generator 14a of the first unit 10a so that the fiber diameter of the first nylon nanofiber nonwoven fabric is 100 to 150 nm. In the second unit 10b, the polyvinylidene fluoride solution is electrospun onto the first nylon nanofiber nonwoven fabric to laminate the first polyvinylidene fluoride nanofiber nonwoven fabric. At this time, a high voltage is applied to the voltage generator of the second unit 10b so that the fiber diameter of the first polyvinylidene fluoride nanofiber nonwoven fabric is 80 to 150 nm. Subsequently, the substrate, the first nylon nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric are provided by the flip device 110 provided at the rear end of the second unit 10b of the electrospinning apparatus 1 '. The top and bottom of the fabric made is rotated 180 °. That is, the upper end of the fabric is changed in position to the lower end, the lower end of the fabric is rotated to change the position to the upper end. In other words, the top and bottom of the fabric are rotated 180 ° such that the other side of the substrate, on which the first nylon nanofiber nonwoven fabric is not laminated, faces the nozzle block 11 of the electrospinning apparatus 1 '. Thereafter, in the third unit 10c, the nylon solution is electrospun on the other side of the substrate to form a second nylon nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm. In the fourth unit 10d, the polyvinylidene fluoride solution is electrospun at a high voltage on the second nylon nanofiber nonwoven fabric to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 80 to 100 nm. And a filter is manufactured.

여기서 상기 나일론 용액은 폴리아미드계 핫멜트를 첨가하여 방사하는 것도 가능하다. The nylon solution may be spun by adding a polyamide-based hot melt.

실시예20Example 20

96% 황산용액에서 상대점도가 2.3인 나일론 6 칩을 포름산에 용해시켜 나일론 용액을 제조하여 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 각각 투입하고, 중량평균분자량이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해시켜 폴리비닐리덴 플루오라이드 용액을 제조하여 전기방사장치의 제2 및 제4 유닛의 방사용액 주탱크에 각각 투입하였다. 전기방사장치의 제1 유닛에서는 인가전압을 17kV로 부여하여 셀룰로오스 기재의 일면에 상기 나일론 용액을 전기방사하여 두께 2㎛, 섬유직경이 160nm인 제1 나일론 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제2 유닛에서는 인가전압을 20kV로 부여하여 상기 제1 나일론 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 제2 유닛 후단부에 위치한 플립장치에서는 상기 셀룰로오스 기재와 상기 셀룰로오스 기재의 일면에 적층형성된 제1 나일론 나노섬유 부직포 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물에서 상기 제1 나일론 나노섬유 부직포가 적층형성되지 않은 상기 셀룰로오스 기재의 타측면이 상기 전기방사장치의 노즐블록을 향하도록 직물의 상하를 180° 회전시킨다. 전기방사장치 제3 유닛에서는 인가전압을 17kV로 부여하여 상기 셀룰로오스 기재의 타측면에 상기 나일론 용액을 전기방사하여 두께 2㎛, 섬유직경이 160nm인 제2 나일론 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제4 유닛에서는 인가전압을 20kV로 부여하여 상기 제2 나일론 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다. 전기방사후에는 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다.A nylon solution was prepared by dissolving nylon 6 chips having a relative viscosity of 2.3 in 96% sulfuric acid solution in formic acid. The nylon solution was introduced into the main tanks of the spinning solution of the first and third units of the electrospinning apparatus, respectively. The vinylidene fluoride was dissolved in dimethylacetamide to prepare a polyvinylidene fluoride solution, which was added to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus, respectively. In the first unit of the electrospinning apparatus, an applied voltage was applied at 17 kV to electrospin the nylon solution on one surface of a cellulose substrate to form a first nylon nanofiber nonwoven fabric having a thickness of 2 μm and a fiber diameter of 160 nm. In the second unit of the electrospinning apparatus, an applied voltage was applied at 20 kV to electrospin the polyvinylidene fluoride solution on the first nylon nanofiber nonwoven fabric to form a first polyvinylidene fluoride nanofiber nonwoven fabric. In the flip device located at the rear end of the second unit, the first nylon in the fabric laminated in the order of the cellulose substrate and the first nylon nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated on one surface of the cellulose substrate. The top and bottom of the fabric is rotated 180 ° so that the other side of the cellulose substrate, on which the nanofiber nonwoven fabric is not laminated, faces the nozzle block of the electrospinning apparatus. In the third unit of the electrospinning apparatus, an applied voltage was applied at 17 kV to electrospin the nylon solution on the other side of the cellulose substrate to form a second nylon nanofiber nonwoven fabric having a thickness of 2 μm and a fiber diameter of 160 nm. In the fourth unit of the electrospinning apparatus, an applied voltage was applied at 20 kV to electrospin the polyvinylidene fluoride solution on the second nylon nanofiber nonwoven fabric to form a second polyvinylidene fluoride nanofiber nonwoven fabric. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%. After electrospinning, the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter.

실시예21Example 21

상기 나일론 용액을 제조함에 있어서, 96% 황산용액에서 상대점도가 2.3인 나일론 6 칩과 수평균 분자량이 3,000인 핫멜트용 폴리아미드 수지를 포름산에 용해시켜 나일론 용액을 제조하는 것을 제외하고는 실시예 21과 동일한 조건으로 필터를 제조하였다.In preparing the nylon solution, except that the nylon solution was prepared by dissolving a nylon 6 chip having a relative viscosity of 2.3 and a polyamide resin for hot melt having a number average molecular weight of 3,000 in formic acid in a 96% sulfuric acid solution. The filter was prepared under the same conditions as.

비교예19Comparative Example 19

실시예 20에 쓰인 셀룰로오스 기재를 필터 여재로 사용하였다.The cellulose substrate used in Example 20 was used as the filter media.

비교예20Comparative Example 20

셀룰로오스 기재 양면에 나일론 6을 전기방사하여 나일론 6 나노섬유 부직포를 적층하여 필터를 제조하였다.Nylon 6 was electrospun on both sides of the cellulose base, and a nylon 6 nanofiber nonwoven fabric was laminated to prepare a filter.

상기 실시예 20 및 21과 비교예 19의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 19에 나타내었다.Filtration efficiencies of Examples 20 and 21 and Comparative Example 19 were measured by the filtration efficiency measurement method, and are shown in Table 19.

표 19 실시예 20 실시예 21 비교예 19 0.35㎛ DOP여과효율(%) 95 94 70 Table 19 Example 20 Example 21 Comparative Example 19 0.35㎛ DOP filtration efficiency (%) 95 94 70

이와 같이 본 발명의 실시예 20 및 21을 통해 제조된 필터는 비교예 19에 비하여 여과효율이 우수함을 알 수 있다.Thus, it can be seen that the filters prepared through Examples 20 and 21 of the present invention have superior filtration efficiency than Comparative Example 19.

또한, 상기 실시예 20 및 21에 의해 제조된 필터와 비교예 19의 압력강하 및 필터수명을 측정하여 표 20에 나타내었다.In addition, the pressure drop and filter life of the filters prepared in Examples 20 and 21 and Comparative Example 19 were measured and shown in Table 20.

표 20 실시예 20 실시예21 비교예 19 압력강하 (in.w.g) 4.4 4.2 8.0 필터수명 (month) 6.0 6.0 3.2 Table 20 Example 20 Example 21 Comparative Example 19 Pressure drop (in.wg) 4.4 4.2 8.0 Filter life (month) 6.0 6.0 3.2

표 20에 따르면 실시예 20 및 21을 통해 제조된 필터는 비교예 19에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.According to Table 20, the filters manufactured through Examples 20 and 21 had a lower pressure drop than Comparative Example 19, resulting in less pressure loss and longer filter life resulting in superior durability.

또한, 상기 실시예 20과 21 및 비교예 20에 의해 제조된 필터의 나노섬유 부직포의 탈리여부를 상기 측정방법에 의해 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 20 및 21에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 20에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, the separation of the nanofiber nonwoven fabric and the filter substrate by the measuring method to determine whether the separation of the nanofiber nonwoven fabric of the filter prepared in Examples 20 and 21 and Comparative Example 20, the results in Examples 20 and 21 Desorption of the nanofiber nonwoven fabric did not occur in the filter produced by the filter, but desorption of the nanofiber nonwoven fabric occurred in the filter prepared in Comparative Example 20.

한편, 본 발명의 일 실시예에서는 기재의 양면에 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되었으나, 또 다른 실시예로 기재의 양면에 폴리우레탄 나노섬유 부직포와 폴리비닐리덴 플루오라이드 나노섬유가 적층되는 것도 가능하다.Meanwhile, in one embodiment of the present invention, polyvinylidene fluoride nanofiber nonwoven fabric is laminated on both sides of the substrate, but in another embodiment, the polyurethane nanofiber nonwoven fabric and polyvinylidene fluoride nanofiber are laminated on both sides of the substrate. It is also possible.

본 실시예의 필터를 제조하기 위해서는 상기와 같은 제조방법에 의해 제조되는데, 전기방사장치(1')의 제1 유닛(10a) 및 제3 유닛(10c)에는 폴리우레탄을 용매에 녹인 폴리우레탄 방사용액을 전기방사하여 폴리우레탄 나노섬유 부직포가 적층형성되고, 제2 유닛(10b) 및 제4 유닛(10d)에서는 폴리비닐리덴 플루오라이드를 용매에 녹인 폴리비닐리덴 플루오라이드 방사용액을 전기방사하여 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 즉, 제1 유닛(10a)에서는 기재의 일측면에 제1 폴리우레탄 나노섬유 부직포가 적층형성되고 제2 유닛(10b)에서는 상기 제1 폴리우레탄 나노섬유 부직포 상에 제1 폴리비닐리덴 플루오라이드(PVDF) 나노섬유 부직포가 적층형성된다. 적층된 직물은 플립장치(110)를 통해 상, 하가 180˚회전된다. 제3 유닛(10c)에서는 상기 나노섬유 부직포가 적층되지 않은 기재의 타측면에 제2 폴리우레탄 나노섬유 부직포가 적층형성되고, 제4 유닛(10d)에서는 상기 제2 폴리우레탄 나노섬유 부직포 상에 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성된다. 상기와 같은 방법에 의하여 각 폴리우레탄 나노섬유 부직포와 각 폴리비닐리덴 플루오라이드 나노섬유 부직포가 상기 기재의 양면에 적층형성된 필터가 제조된다.In order to manufacture the filter of the present embodiment is manufactured by the manufacturing method as described above, in the first unit (10a) and the third unit (10c) of the electrospinning device (1 ') is a polyurethane spinning solution in which polyurethane is dissolved in a solvent Polysulfide fluoride spinning solution in which polyvinylidene fluoride was dissolved in a solvent was electrospun in a polyvinylidene nanofiber nonwoven fabric by laminating a polyvinylidene fluoride in the second unit (10b) and a fourth unit (10d). Liden fluoride nanofiber nonwovens are laminated. That is, in the first unit 10a, the first polyurethane nanofiber nonwoven fabric is laminated on one side of the substrate, and in the second unit 10b, the first polyvinylidene fluoride ( PVDF) nanofiber nonwoven fabrics are laminated. The laminated fabric is rotated 180 degrees up and down through the flip device 110. In the third unit 10c, the second polyurethane nanofiber nonwoven fabric is laminated on the other side of the substrate on which the nanofiber nonwoven fabric is not laminated, and in the fourth unit 10d, the second polyurethane nanofiber nonwoven fabric is formed on the second polyurethane nanofiber nonwoven fabric. 2 polyvinylidene fluoride nanofiber nonwoven fabric is laminated. By the above method, a filter is formed in which each polyurethane nanofiber nonwoven fabric and each polyvinylidene fluoride nanofiber nonwoven fabric are laminated on both sides of the substrate.

실시예22Example 22

디시클로헥실메탄 4,4-디이소시아네이트를 폴리올과 반응시켜 제조된 폴레우레탄을 디메틸포름아미드에 용해한 폴리우레탄 용액을 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 공급하고, 중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해한 폴리비닐리덴 플루오라이드 용액을 전기방사장치의 제2 및 제4 유닛의 방사용액 주탱크에 공급하였다. 전기방사장치의 제1 유닛에서는 폴리에틸렌 테레프탈레이트 기재의 일측면에 상기 폴리우레탄 용액을 전기방사하여 2㎛ 두께의 제1 폴리우레탄 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제2 유닛에서는 상기 제1 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 2㎛ 두께의 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 상기 제2 유닛 후단부에 위치한 플립장치에서는 상기 폴리에틸렌 테레프탈레이트 기재, 제1 폴리우레탄 나노섬유 부직포 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전시키고 제3 유닛으로 직물을 공급하였다. 상기 전기방사장치의 제3 유닛에서는 상기 제1 폴리우레탄 나노섬유 부직포가 적층되지 않은 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 상기 폴리우레탄 용액을 전기방사하여 2㎛ 두께의 제2 폴리우레탄 나노섬유 부직포를 적층형성하였다. 상기 전기방사장치의 제4 유닛에서는 상기 제2 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 2㎛ 두께의 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 인가 전압 20kV, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.Polyurethane solution prepared by reacting dicyclohexylmethane 4,4-diisocyanate with polyol was dissolved in dimethylformamide, and the polyurethane solution was supplied to the spinning solution main tanks of the first and third units of the electrospinning apparatus. A polyvinylidene fluoride solution in which polyvinylidene fluoride having a molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide was supplied to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus. In the first unit of the electrospinning apparatus, the polyurethane solution was electrospun on one side of the polyethylene terephthalate substrate to laminate a first polyurethane nanofiber nonwoven fabric having a thickness of 2 μm. In the second unit of the electrospinning apparatus, the polyvinylidene fluoride solution was electrospun on the first polyurethane nanofiber nonwoven fabric to laminate a first polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 μm. The flip unit located at the rear end of the second unit rotates the top and bottom of the fabric consisting of the polyethylene terephthalate substrate, the first polyurethane nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric by 180 ° Was fed the fabric. In the third unit of the electrospinning apparatus, a second polyurethane nanofiber nonwoven fabric having a thickness of 2 μm is formed by electrospinning the polyurethane solution on the other side of the polyethylene terephthalate substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated. Lamination was performed. In the fourth unit of the electrospinning apparatus, the polyvinylidene fluoride solution was electrospun on the second polyurethane nanofiber nonwoven fabric to laminate a second polyvinylidene fluoride nanofiber nonwoven fabric having a thickness of 2 μm. After electrospinning, the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter. At this time, electrospinning was performed at 40 cm, an applied voltage of 20 kV, a spinning solution flow rate of 0.1 mL / h, a temperature of 22 ° C., and a humidity of 20%.

실시예23Example 23

디시클로헥실메탄 4,4-디이소시아네이트를 폴리올과 반응시켜 제조된 폴레우레탄을 디메틸포름아미드에 용해한 폴리우레탄 용액을 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 공급하고, 중량평균 분자량(Mw)이 50,000인 폴리비닐리덴 플루오라이드를 디메틸아세트아미드에 용해한 폴리비닐리덴 플루오라이드 용액을 전기방사장치의 제2 및 제4 유닛의 방사용액 주탱크에 공급하였다. 전기방사장치의 제1 유닛에서는 인가전압을 15kV로 부여하고 폴리에틸렌 테레프탈레이트 기재의 일측면에 상기 폴리우레탄 용액을 전기방사하여 두께 2㎛, 섬유직경 250nm인 제1 폴리우레탄 나노섬유 부직포를 적층형성하였다. 전기방사장치의 제2 유닛에서는 인가전압을 20kV로 부여하고 상기 제1 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 두께 2㎛, 섬유직경 130nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 상기 제2 유닛 후단부에 위치한 플립장치에서는 상기 폴리에틸렌 테레프탈레이트 기재, 제1 폴리우레탄 나노섬유 부직포 및 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전시키고, 제3 유닛으로 직물을 공급하였다. 상기 전기방사장치의 제3 유닛에서는 인가전압을 15kV로 부여하고 상기 제1 폴리우레탄 나노섬유 부직포가 적층되지 않은 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 상기 폴리우레탄 용액을 전기방사하여 두께 2㎛, 섬유직경 250nm인 제2 폴리우레탄 나노섬유 부직포를 적층형성하였다. 상기 전기방사장치의 제4 유닛에서는 인가전압을 20kV로 부여하고 상기 제2 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 두께 2㎛, 섬유직경 130nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하였다. 전기방사 후에는 적층된 직물을 라미네이팅 장치에서 열융착하여 최종적으로 필터를 제조하였다. 이 때, 전기방사는 전극과 컬렉터 간의 거리를 40cm, 방사용액 유량 0.1mL/h, 온도 22℃, 습도 20%의 조건에서 실시하였다.Polyurethane solution prepared by reacting dicyclohexylmethane 4,4-diisocyanate with polyol was dissolved in dimethylformamide, and the polyurethane solution was supplied to the spinning solution main tanks of the first and third units of the electrospinning apparatus. A polyvinylidene fluoride solution in which polyvinylidene fluoride having a molecular weight (Mw) of 50,000 was dissolved in dimethylacetamide was supplied to the spinning solution main tanks of the second and fourth units of the electrospinning apparatus. In the first unit of the electrospinning apparatus, an applied voltage was applied to 15 kV, and the polyurethane solution was electrospun on one side of the polyethylene terephthalate substrate to laminate a first polyurethane nanofiber nonwoven fabric having a thickness of 2 μm and a fiber diameter of 250 nm. . In the second unit of the electrospinning apparatus, a first polyvinylidene fluoride having an applied voltage of 20 kV and electrospinning the polyvinylidene fluoride solution on the first polyurethane nanofiber nonwoven fabric having a thickness of 2 μm and a fiber diameter of 130 nm Ride nanofiber nonwovens were laminated. The flip device located at the rear end of the second unit rotates the top and bottom of the fabric consisting of the polyethylene terephthalate substrate, the first polyurethane nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric by 180 °, and the third The fabric was fed to the unit. In the third unit of the electrospinning apparatus, an applied voltage of 15 kV is applied and the polyurethane solution is electrospun on the other side of the polyethylene terephthalate substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated. A second polyurethane nanofiber nonwoven fabric having a diameter of 250 nm was laminated. In the fourth unit of the electrospinning apparatus, the second polyvinylidene having a thickness of 2 μm and a fiber diameter of 130 nm is applied by applying an applied voltage of 20 kV and electrospinning the polyvinylidene fluoride solution on the second polyurethane nanofiber nonwoven fabric. Fluoride nanofiber nonwoven fabrics were laminated. After electrospinning, the laminated fabric was thermally fused in a laminating apparatus to finally prepare a filter. At this time, the electrospinning was carried out under the conditions of the distance between the electrode and the collector 40cm, the flow rate of the spinning solution 0.1mL / h, the temperature 22 ℃, humidity 20%.

비교예21Comparative Example 21

실시예 22에 쓰인 셀룰로오스 기재를 필터 여재로 사용하였다.The cellulose substrate used in Example 22 was used as the filter media.

비교예22Comparative Example 22

셀룰로오스 기재의 양면에 폴리비닐리덴 플루오라이드를 전기방사하여 필터를 제조하였다.A polyvinylidene fluoride was electrospun on both surfaces of the cellulose substrate to prepare a filter.

상기 실시예 22 및 23과 비교예 21의 여과효율을 상기 여과효율 측정 방법에 의해 측정하여 표 21에 나타내었다. 또한, 상기 실시예 22 및 23에 의해 제조된 필터와 비교예 21의 압력강하 및 필터수명을 측정하여 표 22에 나타내었다.The filtration efficiency of Examples 22 and 23 and Comparative Example 21 was measured by the filtration efficiency measurement method and shown in Table 21. In addition, the pressure drop and filter life of the filters prepared in Examples 22 and 23 and Comparative Example 21 were measured and shown in Table 22.

표 21 실시예22 실시예23 비교예21 0.35㎛ DOP여과효율(%) 94 95 70 Table 21 Example 22 Example 23 Comparative Example 21 0.35㎛ DOP filtration efficiency (%) 94 95 70

표 22 실시예22 실시예23 비교예21 압력강하 (in.w.g) 4.8 4.9 8.0 필터수명 (month) 5.7 5.5 3.5 Table 22 Example 22 Example 23 Comparative Example 21 Pressure drop (in.wg) 4.8 4.9 8.0 Filter life (month) 5.7 5.5 3.5

이와 같이 실시예 22 및 23을 통해 제조된 필터는 비교예21에 비하여 여과효율이 우수함을 알 수 있다.Thus, it can be seen that the filters prepared through Examples 22 and 23 are superior in filtration efficiency than Comparative Example 21.

또한, 표 22에 따르면 실시예22 및 23을 통해 제조된 필터는 비교예21에 비하여 압력강하가 낮아 압력손실이 적고 필터수명은 더 길어 결과적으로 내구성이 우수함을 알 수 있다.In addition, according to Table 22, the filters manufactured through Examples 22 and 23 have a lower pressure drop than Comparative Example 21, resulting in less pressure loss and longer filter life, resulting in superior durability.

또한, 상기 실시예 22 및 23과 비교예22에 의해 제조된 필터의 나노섬유 부직포의 탈리여부를 상기 측정방법에 의해 나노섬유 부직포와 필터 기재의 탈리여부를 측정한 결과, 실시예 22 및 23에 의해서 제조된 필터에서는 나노섬유 부직포의 탈리가 일어나지 않았으나, 비교예 22에 의해서 제조된 필터는 나노섬유 부직포의 탈리가 발생했다.In addition, as a result of measuring the detachment of the nanofiber nonwoven fabric of the filter prepared in Examples 22 and 23 and Comparative Example 22 by the measurement method of the separation of the nanofiber nonwoven fabric and the filter substrate, the results in Examples 22 and 23 Desorption of the nanofiber nonwoven fabric did not occur in the filter produced by the filter, but desorption of the nanofiber nonwoven fabric occurred in the filter prepared in Comparative Example 22.

이상, 본 발명은 특정의 실시예와 관련하여 도시 및 설명하지만, 첨부 특허청구의 범위에 나타난 발명의 사상 및 영역으로부터 벗어나지 않는 한도 내에서 다양한 개조 및 변화가 가능하다는 것은 당업계에서 통상의 지식을 가진 자라면 누구나 쉽게 알 수 있을 것이다.While the invention has been shown and described in connection with particular embodiments, it will be appreciated that various modifications and changes can be made without departing from the spirit and scope of the invention as set forth in the appended claims. Anyone who owns it can easily find out.

Claims (32)

셀룰로오스 기재;Cellulose substrates; 상기 셀룰로오스 기재의 상부면에 전기방사에 의해 적층형성되는 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포; 및A first polyvinylidene fluoride nanofiber nonwoven fabric laminated on the upper surface of the cellulose substrate by electrospinning; And 상기 셀룰로오스 기재의 하부면에 전기방사에 의해 적층형성되는 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포;A second polyvinylidene fluoride nanofiber nonwoven fabric laminated on the lower surface of the cellulose substrate by electrospinning; 를 포함하고, 상기 셀룰로오스 기재와 상기 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 열융착되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.Wherein the cellulose substrate and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics are thermally fused. 제 1항에 있어서, The method of claim 1, 상기 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액으로 제조되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.The first and second polyvinylidene fluoride nanofiber nonwoven fabric is a filter including nanofibers on both sides of the substrate, characterized in that the polyvinylidene fluoride and hot melt is prepared in a solution. 제 1항에 있어서,The method of claim 1, 상기 셀룰로오스 기재와 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 사이, 그리고 상기 셀룰로오스 기재와 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포 사이에 각각 핫멜트 전기방사층이 포함되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.On both sides of the substrate, a hot melt electrospinning layer is included between the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric, and between the cellulose substrate and the second polyvinylidene fluoride nanofiber nonwoven fabric. Filters containing nanofibers. 제 2항에 있어서,The method of claim 2, 상기 핫멜트는 폴리비닐리덴 플루오라이드계인 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.The hot melt filter comprising a nanofiber on both sides of the substrate, characterized in that the polyvinylidene fluoride-based. 제 1항에 있어서,The method of claim 1, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 150 내지 300nm이고, 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 100 내지 150nm인 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.The first polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 150 to 300 nm, and the second polyvinylidene fluoride nanofiber nonwoven fabric includes nanofibers on both sides of the substrate, wherein the fiber diameter is 100 to 150 nm. Filter. 제 1항에 있어서, The method of claim 1, 상기 셀룰로오스 기재는 셀룰로오스 및 폴리에틸렌 테레프탈레이트를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.The cellulose substrate is a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises cellulose and polyethylene terephthalate. 제 6항에 있어서,The method of claim 6, 상기 셀룰로오스 기재는 상기 셀룰로오스의 구성비가 70 내지 90 질량%이며, 상기 폴리에틸렌 테레프탈레이트의 구성비가 10 내지 30 질량%인 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.The cellulose substrate is a filter containing nanofibers on both sides of the substrate, characterized in that the composition ratio of the cellulose is 70 to 90% by mass, and the composition ratio of the polyethylene terephthalate is 10 to 30% by mass. 제 1항에 있어서,The method of claim 1, 상기 셀룰로오스 기재는 방염 코팅된 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.The cellulose substrate is a filter comprising a nanofiber on both sides of the substrate, characterized in that the flame-retardant coating. 폴리에틸렌 테레프탈레이트 기재;Polyethylene terephthalate substrates; 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 방사용액을 전기방사하여 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포; 및A first polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning a spinning solution containing a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride on one side of the polyethylene terephthalate substrate; And 상기 폴리에틸렌 테레프탈레이트 기재에서 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않은 타측면에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 방사용액을 전기방사하여 적층형성된 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포;The polyethylene terephthalate substrate is formed by laminating electrospun spinning solution containing a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride on the other side not bonded to the first polyvinylidene fluoride nanofiber nonwoven fabric. 2 polyvinylidene fluoride nanofiber nonwovens; 를 포함하고 상기 폴리에틸렌 테레프탈레이트 기재 및 상기 폴리에틸렌 테레프탈레이트 기재 양면에 적층형성된 상기 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.The filter comprising nanofibers on both sides of the substrate, characterized in that the heat-sealing the first and second polyvinylidene fluoride nanofiber nonwoven fabric laminated on both sides of the polyethylene terephthalate substrate and the polyethylene terephthalate substrate. 이성분 기재;Two-component base material; 상기 이성분 기재의 상부면에 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액을 전기방사하여 적층형성되는 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포; 및A first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric laminated by electrospinning a solution of a polyvinylidene fluoride and a hot melt on an upper surface of the bicomponent substrate; And 상기 이성분 기재의 하부면에 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액을 전기방사하여 적층형성되는 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포;A second polyvinylidene fluoride-hot melt nanofiber nonwoven fabric laminated by electrospinning a solution containing a mixture of polyvinylidene fluoride and hot melt on a lower surface of the bicomponent substrate; 를 포함하고, 상기 이성분 기재 및 상기 제1 및 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.And a nanofiber on both sides of the substrate, wherein the bicomponent substrate and the first and second polyvinylidene fluoride-hot melt nanofiber nonwoven fabrics are heat-sealed. 폴리에틸렌 테레프탈레이트 기재;Polyethylene terephthalate substrates; 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 적층된 제1 이성분 기재;A first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate; 상기 제1 이성분 기재 상에 전기방사에 의해 적층형성되는 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포;A first polyvinylidene fluoride nanofiber nonwoven fabric laminated on the first bicomponent substrate by electrospinning; 상기 제1 이성분 기재와 접합하지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 적층된 제2 이성분 기재; 및A second bicomponent substrate laminated on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate; And 상기 제2 이성분 기재 상에 전기방사에 의해 적층형성되는 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포;A second polyvinylidene fluoride nanofiber nonwoven fabric laminated on the second bicomponent substrate by electrospinning; 를 포함하고, 상기 폴리에틸렌 테레프탈레이트 기재, 상기 제1 및 2 이성분 기재 및 상기 제1 및 2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.And a nanofiber on both surfaces of the polyethylene terephthalate substrate, the first and second bicomponent substrates, and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics. 폴리에틸렌 테레프탈레이트 기재;Polyethylene terephthalate substrates; 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 적층된 제1 이성분 기재;A first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate; 상기 제1 이성분 기재 상에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 용액을 전기방사하여 적층형성된 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포;A first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning a solution of a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride on the first bicomponent substrate; 상기 제1 이성분 기재와 접합하지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 적층된 제2 이성분 기재;A second bicomponent substrate laminated on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate; 상기 제2 이성분 기재 상에 고융점 폴리비닐리덴 플루오라이드 및 저융점 폴리비닐리덴 플루오라이드를 혼합한 용액을 전기방사하여 적층형성된 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포;A second high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning a solution of a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride on the second bicomponent substrate; 를 포함하고, 상기 폴리에틸렌 테레프탈레이트 기재, 상기 제1 및 2 이성분 기재 및 상기 제1 및 2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포는 열융착되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.And the polyethylene terephthalate substrate, the first and second bicomponent substrates, and the first and second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabrics are thermally fused. Filter comprising. 폴리에틸렌 테레프탈레이트 기재;Polyethylene terephthalate substrates; 상기 폴리에틸렌 테레프탈레이트 기재의 일측면에 적층된 제1 이성분 기재;A first bicomponent substrate laminated on one side of the polyethylene terephthalate substrate; 상기 제1 이성분 기재 상에 전기방사에 의해 적층형성되는 제1 나일론 나노섬유 부직포;A first nylon nanofiber nonwoven fabric laminated on the first bicomponent substrate by electrospinning; 상기 제1 이성분 기재와 접합하지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 적층된 제2 이성분 기재; 및A second bicomponent substrate laminated on the other side of the polyethylene terephthalate substrate not bonded to the first bicomponent substrate; And 상기 제2 이성분 기재 상에 전기방사에 의해 적층형성되는 제2 나일론 나노섬유 부직포;A second nylon nanofiber nonwoven fabric laminated on the second bicomponent substrate by electrospinning; 를 포함하고, 상기 폴리에틸렌 테레프탈레이트 기재, 상기 제1 및 2 이성분 기재 및 상기 제1 및 2 나일론 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.And a nanofiber on both sides of the substrate, wherein the polyethylene terephthalate substrate, the first and second bicomponent substrates, and the first and second nylon nanofiber nonwoven fabrics are heat-sealed. 기재;materials; 상기 기재의 일측면에 폴리비닐리덴 플루오라이드와 폴리우레탄을 용매에 용해시킨 용액을 전기방사하여 적층형성된 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포; 및A first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric laminated by electrospinning a solution of polyvinylidene fluoride and polyurethane in a solvent on one side of the substrate; And 상기 제1 나노섬유 부직포가 적층되지 않은 상기 기재의 다른 타측면에 폴리비닐리덴 플루오라이드와 폴리우레탄을 혼합한 용액을 전기방사하여 적층형성된 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포;A second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric laminated by electrospinning a solution of polyvinylidene fluoride and polyurethane on the other side of the substrate on which the first nanofiber nonwoven fabric is not laminated; 를 포함하고, 상기 기재 및 상기 기재의 양면에 적층형성되는 제1 및 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.And a nanofiber on both sides of the substrate, wherein the first and second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabrics are laminated on both sides of the substrate and the substrate. 기재;materials; 상기 기재의 일측면에 전기방사에 의해 적층형성되고 섬유직경이 150 내지 200nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포;A first polyvinylidene fluoride nanofiber nonwoven fabric laminated on one side of the substrate by an electrospinning and having a fiber diameter of 150 to 200 nm; 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포;A second polyvinylidene fluoride nanofiber nonwoven fabric laminated on the first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm; 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않는 상기 기재의 타측면에 전기방사에 의해 적층형성되고 섬유직경이 150 내지 200nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포; 및A third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm laminated by electrospinning on the other side of the substrate not bonded to the first polyvinylidene fluoride nanofiber nonwoven fabric; And 상기 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포;A fourth polyvinylidene fluoride nanofiber nonwoven fabric laminated on the third polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm; 를 포함하고, 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.And a filter comprising nanofibers on both sides of the substrate, characterized in that it is thermally fused. 기재;materials; 상기 기재의 일측면에 전기방사에 의해 적층형성되는 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포;A first low melting polyvinylidene fluoride nanofiber nonwoven fabric laminated on one side of the substrate by electrospinning; 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되는 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포;A first high melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated on the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning; 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유가 적층형성되지 않은 상기 기재의 타측면에 전기방사에 의해 적층형성되는 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포; 및A second low melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning on the other side of the substrate on which the first low melting point polyvinylidene fluoride nanofibers are not laminated; And 상기 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 전기방사에 의해 적층형성되는 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포;A second high melting point polyvinylidene fluoride nanofiber nonwoven fabric laminated on the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning; 를 포함하고, 상기 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 기재, 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서대로 적층형성된 직물은 열융착되는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.And a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, a first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, a substrate, a second low melting point polyvinylidene fluoride nanofiber nonwoven fabric, and a second high melting point A fabric comprising nanofibers on both sides of a substrate, wherein the fabric laminated in the order of polyvinylidene fluoride nanofiber nonwoven fabric is heat-sealed. 기재;materials; 상기 기재의 일측면에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제1 나일론 나노섬유 부직포;A first nylon nanofiber nonwoven fabric laminated on one side of the substrate by electrospinning and having a fiber diameter of 100 to 150 nm; 상기 제1 나일론 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 80 내지 150nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포;A first polyvinylidene fluoride nanofiber nonwoven fabric laminated on the first nylon nanofiber nonwoven fabric by an electrospinning and having a fiber diameter of 80 to 150 nm; 상기 제1 나일론 나노섬유 부직포와 접합하지 않는 상기 기재의 타측면에 전기방사에 의해 적층형성되고 섬유직경이 100 내지 150nm인 제2 나일론 나노섬유 부직포;A second nylon nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm laminated by electrospinning on the other side of the substrate not bonded to the first nylon nanofiber nonwoven fabric; 상기 제2 나일론 나노섬유 부직포 상에 전기방사에 의해 적층형성되고 섬유직경이 80 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포;A second polyvinylidene fluoride nanofiber nonwoven fabric laminated on the second nylon nanofiber nonwoven fabric having an fiber diameter of 80 to 150 nm; 를 포함하고, 이를 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.Includes, and a filter comprising nanofibers on both sides of the substrate, characterized in that the thermal fusion. 기재;materials; 상기 기재의 일측면에 폴리우레탄을 용매에 용해시킨 폴리우레탄 용액을 전기방사하여 적층형성된 제1 폴리우레탄 나노섬유 부직포;A first polyurethane nanofiber nonwoven fabric laminated by electrospinning a polyurethane solution in which a polyurethane is dissolved in a solvent on one side of the substrate; 상기 제1 폴리우레탄 나노섬유 부직포 상에 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 전기방사하여 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포;A first polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in a solvent on the first polyurethane nanofiber nonwoven fabric; 상기 제1 폴리우레탄 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 폴리우레탄 용액을 전기방사하여 적층형성된 제2 폴리우레탄 나노섬유 부직포; 및A second polyurethane nanofiber nonwoven fabric laminated by electrospinning a polyurethane solution to the other side of the substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated; And 상기 제2 폴리우레탄 나노섬유 부직포 상에 폴리비닐리덴 플루오라이드 용액을 전기방사하여 적층형성된 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포;A second polyvinylidene fluoride nanofiber nonwoven fabric laminated by electrospinning a polyvinylidene fluoride solution on the second polyurethane nanofiber nonwoven fabric; 를 포함하고, 적층된 직물을 열융착하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터.Includes, the filter comprising nanofibers on both sides of the substrate, characterized in that the heat-sealed laminated fabric. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 각 유닛의 방사용액 주탱크에 투입하는 단계;Injecting a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in a solvent into a spinning solution main tank of each unit; 상기 전기방사장치의 제1 유닛에서 셀룰로오스 기재의 일측면에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;Stacking the first polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the polyvinylidene fluoride solution on one side of a cellulose substrate in the first unit of the electrospinning apparatus; 상기 플립장치에서 상기 셀룰로오스 기재 및 이에 적층형성된 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전하는 단계;Rotating the top and bottom of the fabric made of the cellulose substrate and the first polyvinylidene fluoride nanofiber nonwoven fabric laminated thereon in the flip device; 상기 전기방사장치의 제2 유닛에서 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않은 상기 셀룰로오스 기재의 타측면에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; 및In the second unit of the electrospinning apparatus, the polyvinylidene fluoride solution is electrospun on the other side of the cellulose substrate on which the first polyvinylidene fluoride nanofiber nonwoven fabric is not laminated to form a second polyvinylidene fluoride nanoparticle. Laminating the fibrous nonwoven fabric; And 상기 셀룰로오스 기재와 상기 셀룰로오스 기재의 양면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착시키는 단계;Heat-sealing the cellulose substrate and the first and second polyvinylidene fluoride nanofiber nonwoven fabrics laminated on both surfaces of the cellulose substrate; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 제 19항에 있어서,The method of claim 19, 상기 폴리비닐리덴 플루오라이드 용액은 폴리비닐리덴 플루오라이드와 핫멜트를 혼합한 용액인 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.The polyvinylidene fluoride solution is a method for producing a filter including nanofibers on both sides of the substrate, characterized in that the solution is a mixture of polyvinylidene fluoride and hot melt. 제 20항에 있어서,The method of claim 20, 상기 핫멜트는 폴리비닐리덴 플루오라이드계 핫멜트인 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.The hot melt is a polyvinylidene fluoride-based hot melt, characterized in that the manufacturing method of the filter comprising nanofibers on both sides of the substrate. 제 20항에 있어서,The method of claim 20, 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 150 내지 300nm이고, 상기 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포는 섬유직경이 100 내지 150nm인 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.The first polyvinylidene fluoride nanofiber nonwoven fabric has a fiber diameter of 150 to 300 nm, and the second polyvinylidene fluoride nanofiber nonwoven fabric includes nanofibers on both sides of the substrate, wherein the fiber diameter is 100 to 150 nm. The manufacturing method of the filter to make. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 고융점 폴리비닐리덴 플루오라이드와 저융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 방사용액을 각 유닛의 공급장치에 투입하는 단계;Injecting a spinning solution in which a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride are dissolved in a solvent, into a feeder of each unit; 상기 전기방사장치의 제1 유닛에서는 폴리에틸렌 테레프탈레이트 기재 상에 상기 방사용액을 전기방사하여 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; Laminating a first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the spinning solution on a polyethylene terephthalate substrate in the first unit of the electrospinning apparatus; 상기 플립장치에서 상기 폴리에틸렌 테레프탈레이트 기재와 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 순으로 적층된 직물의 상, 하를 180° 회전하는 단계;Rotating the polyethylene terephthalate substrate with the first high melting point and the low melting point polyvinylidene fluoride nanofiber nonwoven fabric in the flipping device by 180 °; 상기 전기방사장치의 제2 유닛에서는 상기 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층되지 않는 상기 폴리에틸렌 테레프탈레이트 기재의 타측면에 상기 방사용액을 전기방사하여 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; 및In the second unit of the electrospinning apparatus, the spinning solution is electrospun on the other side of the polyethylene terephthalate substrate on which the first high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric is not laminated, thereby providing a second high melting point and Laminating a low melting polyvinylidene fluoride nanofiber nonwoven fabric; And 상기 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 폴리에틸렌 테레프탈레이트 기재, 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계;Heat-sealing the fabric laminated in the order of the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric, a polyethylene terephthalate substrate, and a second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 폴리비닐리덴 플루오라이드와 핫멜트를 용매에 용해시킨 방사용액을 각 유닛의 공급장치에 투입하는 단계;Injecting a spinning solution obtained by dissolving polyvinylidene fluoride and a hot melt in a solvent to a feeder of each unit; 상기 전기방사장치의 제1 유닛에서는 이성분 기재의 일측면에 상기 방사용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 적층형성하는 단계;Laminating a first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric by electrospinning the spinning solution on one side of a bicomponent substrate in the first unit of the electrospinning apparatus; 상기 플립장치에서 상기 이성분 기재 및 이에 적층형성된 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전하는 단계;Rotating the top and bottom of the fabric consisting of the bicomponent substrate and the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric laminated thereon in the flip device; 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포가 적층되지 않은 상기 이성분 기재의 타측면에 상기 방사용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 적층형성하는 단계; 및In the second unit of the electrospinning apparatus, a second polyvinylidene fluoride-hot melt is formed by electrospinning the spinning solution on the other side of the two-component substrate on which the first polyvinylidene fluoride-hot melt nanofiber nonwoven fabric is not laminated. Stacking nanofiber nonwoven fabrics; And 상기 이성분 기재와 이성분 기재의 양면에 적층형성된 제1 및 제2 폴리비닐리덴 플루오라이드-핫멜트 나노섬유 부직포를 열융착시키는 단계;Thermally fusion bonding the first and second polyvinylidene fluoride-hotmelt nanofiber nonwoven fabrics laminated on both sides of the bicomponent substrate and the bicomponent substrate; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서, It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 각 유닛의 공급장치에 투입하는 단계;Introducing a polyvinylidene fluoride solution in which polyvinylidene fluoride is dissolved in a solvent into a feeder of each unit; 상기 전기방사장치의 제1 유닛에서 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재의 순서로 적층되어 있는 기재의 제1 이성분 기재 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;Electrospinning the polyvinylidene fluoride solution on the first bicomponent substrate of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate in the first unit of the electrospinning apparatus Laminating the first polyvinylidene fluoride nanofiber nonwoven fabric; 상기 플립장치에서 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 상기 제2 이성분 기재 순서로 적층된 직물의 상, 하를 180° 회전하는 단계;Rotating the first and the second polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate in the flip device by 180 °; 상기 전기방사장치의 제2 유닛에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재의 일면에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; 및The second polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the polyvinylidene fluoride solution on one surface of the second bicomponent substrate not bonded to the polyethylene terephthalate substrate in the second unit of the electrospinning apparatus. Forming; And 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계;Heat-sealing the fabric laminated in the order of the first polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate, the second bicomponent substrate, and the second polyvinylidene fluoride nanofiber nonwoven fabric ; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 고융점 폴리비닐리덴 플루오라이드와 저융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 방사용액을 각 유닛의 공급장치에 투입하는 단계;Injecting a spinning solution in which a high melting point polyvinylidene fluoride and a low melting point polyvinylidene fluoride are dissolved in a solvent, into a feeder of each unit; 상기 전기방사장치의 제1 유닛에서는 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재의 순서로 적층되어 있는 기재의 제1 이성분 기재 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; In the first unit of the electrospinning apparatus, the polyvinylidene fluoride solution is electrospun on the first bicomponent substrate of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate. Laminating the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabrics; 상기 제1 유닛 후단부에 위치한 플립장치에서 상기 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 상기 제2 이성분 기재 순서로 적층된 직물의 상, 하를 180° 회전하는 단계;The first high melting point and the low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate are stacked in a flip device located at the rear end of the first unit. Rotating the top and bottom of the fabric 180 °; 상기 전기방사장치의 제2 유닛에서는 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재 상에 상기 방사용액을 전기방사하여 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; 및In the second unit of the electrospinning apparatus, a second high melting point and low melting point polyvinylidene fluoride nanofiber nonwoven fabric is laminated by electrospinning the spinning solution on the second bicomponent substrate not bonded to the polyethylene terephthalate substrate. Forming; And 상기 제1 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 고융점 및 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계;Of the first high melting point and low melting polyvinylidene fluoride nanofiber nonwoven fabric, the first bicomponent base material, polyethylene terephthalate base material, the second bicomponent base material, the second high melting point polyvinylidene fluoride nanofiber nonwoven fabric Thermally bonding the laminated fabrics in sequence; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 나일론을 용매에 용해시킨 나일론 용액을 각 유닛의 공급장치에 투입하는 단계;Introducing a nylon solution in which nylon is dissolved in a solvent into a feeder of each unit; 상기 전기방사장치의 제1 유닛에서 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재의 순서로 적층되어 있는 기재의 제1 이성분 기재 상에 상기 나일론 용액을 전기방사하여 제1 나일론 나노섬유 부직포를 적층형성하는 단계;In the first unit of the electrospinning apparatus, the nylon solution is electrospun on the first bicomponent substrate of the substrate laminated in the order of the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate. Stacking nanofiber nonwoven fabrics; 상기 플립장치에서 상기 제1 나일론 나노섬유 부직포, 상기 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 상기 제2 이성분 기재 순서로 적층된 직물의 상, 하를 180° 회전하는 단계;Rotating the first and second nylon nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate, and the second bicomponent substrate in the flip device by 180 °; 상기 전기방사장치의 제2 유닛에서 상기 폴리에틸렌 테레프탈레이트 기재와 접합하지 않는 상기 제2 이성분 기재의 일면에 상기 나일론 용액을 전기방사하여 제2 나일론 나노섬유 부직포를 적층형성하는 단계; 및Stacking the second nylon nanofiber nonwoven fabric by electrospinning the nylon solution on one surface of the second bicomponent substrate which is not bonded to the polyethylene terephthalate substrate in the second unit of the electrospinning apparatus; And 상기 제1 나일론 나노섬유 부직포, 제1 이성분 기재, 폴리에틸렌 테레프탈레이트 기재, 제2 이성분 기재, 제2 나일론 나노섬유 부직포의 순서로 적층된 직물을 열융착하는 단계;Heat-sealing the fabric laminated in the order of the first nylon nanofiber nonwoven fabric, the first bicomponent substrate, the polyethylene terephthalate substrate, the second bicomponent substrate, and the second nylon nanofiber nonwoven fabric; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 폴리비닐리덴 플루오라이드와 폴리우레탄을 용매에 용해시킨 방사용액을 각 유닛의 방사용액 주탱크에 투입하는 단계;Injecting a spinning solution obtained by dissolving polyvinylidene fluoride and polyurethane in a solvent to a spinning solution main tank of each unit; 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 방사용액을 전기방사하여 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 적층형성하는 단계;Laminating the first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric by electrospinning the spinning solution on one side of the substrate in the first unit of the electrospinning apparatus; 상기 제1 유닛 후단부에 위치한 플립장치에서는 상기 기재 및 적층된 제1 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포로 이뤄진 직물에서 상기 제1 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면이 상기 노즐블록을 향하도록 직물의 상하를 180° 회전하는 단계;In the flip device located at the rear end of the first unit, the other side of the substrate, in which the first nanofiber nonwoven is not laminated, is fabricated from the substrate and the laminated first polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric. Rotating the fabric 180 ° up and down to face the nozzle block; 상기 전기방사장치의 제2 유닛에서는 상기 기재의 타측면에 상기 방사용액을 전기방사하여 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 적층형성하는 단계; 및Stacking a second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabric by electrospinning the spinning solution on the other side of the substrate in the second unit of the electrospinning apparatus; And 상기 기재와 상기 기재의 양면에 적층형성된 제1 및 제2 폴리우레탄 및 폴리비닐리덴 플루오라이드 혼합 나노섬유 부직포를 열융착시키는 단계;Heat-sealing the substrate and the first and second polyurethane and polyvinylidene fluoride mixed nanofiber nonwoven fabrics laminated on both sides of the substrate; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 폴리비닐리덴 플루오라이드를 용매에 용해시킨 방사용액을 각 유닛의 방사용액 주탱크에 투입하는 단계;Injecting a spinning solution obtained by dissolving polyvinylidene fluoride in a solvent to the spinning solution main tank of each unit; 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 방사용액을 전기방사하여 섬유직경이 150 내지 200nm인 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;Laminating a first polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 150 to 200 nm by electrospinning the spinning solution on one side of the substrate in the first unit of the electrospinning apparatus; 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 방사용액을 전기방사하여 섬유직경이 100 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;In the second unit of the electrospinning apparatus, the spinning solution is electrospun on the first polyvinylidene fluoride nanofiber nonwoven fabric to form a second polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm. step; 상기 플립장치에서 상기 기재, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 뒤집는 단계;Inverting the top and bottom of the fabric consisting of the substrate, the first polyvinylidene fluoride nanofiber nonwoven fabric and the second polyvinylidene fluoride nanofiber nonwoven fabric in the flip device; 상기 전기방사장치의 제3 유닛에서는 상기 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포와 접합하지 않는 상기 기재의 타측면에 상기 방사용액을 전기방사하여 섬유직경이 150 내지 200nm인 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;In the third unit of the electrospinning apparatus, the third polyvinylidene fluoride having a fiber diameter of 150 to 200 nm by electrospinning the spinning solution on the other side of the substrate not bonded to the first polyvinylidene fluoride nanofiber nonwoven fabric. Laminating the nano nanofiber nonwoven fabric; 상기 전기방사장치의 제4 유닛에서는 상기 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 방사용액을 전기방사하여 섬유직경이 100 내지 150nm인 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; 및In the fourth unit of the electrospinning apparatus, the spinning solution is electrospun on the third polyvinylidene fluoride nanofiber nonwoven fabric to form a fourth polyvinylidene fluoride nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm. step; And 상기 기재, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제3 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제4 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 적층된 직물을 열융착하는 단계;A laminate comprising the substrate, a first polyvinylidene fluoride nanofiber nonwoven fabric, a second polyvinylidene fluoride nanofiber nonwoven fabric, a third polyvinylidene fluoride nanofiber nonwoven fabric, and a fourth polyvinylidene fluoride nanofiber nonwoven fabric Heat-sealing the woven fabric; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 저융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 저융점 폴리비닐리덴 플루오라이드 용액을 제조하고 상기 전기방사장치의 제1 및 제3 유닛에 공급하고, 고융점 폴리비닐리덴 플루오라이드를 용매에 용해시킨 고융점 폴리비닐리덴 플루오라이드 용액을 제조하고 상기 전기방사장치의 제2 및 제4 유닛에 공급하는 단계;A low melting polyvinylidene fluoride solution in which low melting polyvinylidene fluoride was dissolved in a solvent was prepared and supplied to the first and third units of the electrospinning apparatus, and the high melting polyvinylidene fluoride was dissolved in a solvent. Preparing a high melting point polyvinylidene fluoride solution and feeding it to the second and fourth units of the electrospinning apparatus; 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;Stacking the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the low melting point polyvinylidene fluoride solution on one side of the substrate in the first unit of the electrospinning apparatus; 상기 전기방사장치의 제2 유닛에서는 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;In the second unit of the electrospinning apparatus, the high melting point polyvinylidene fluoride nanofiber nonwoven fabric is electrospun onto the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric to form a first high melting point polyvinylidene fluoride nanofiber nonwoven fabric. Stacking; 상기 플립장치에서 상기 기재, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서대로 적층된 직물의 상, 하를 180° 회전하는 단계;Rotating the top and bottom of the laminated fabric in order of the substrate, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric and the first high melting point polyvinylidene fluoride nanofiber nonwoven fabric in the flip device; 상기 전기방사장치의 제3 유닛에서는 상기 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포가 적층형성되지 않은 상기 기재의 타측면에 상기 저융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;In the third unit of the electrospinning apparatus, the low melting point polyvinylidene fluoride solution is electrospun on the other side of the substrate on which the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric is not laminated to form a second low melting point solution. Stacking polyvinylidene fluoride nanofiber nonwoven fabrics; 상기 전기방사장치의 제4 유닛에서는 상기 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 상에 상기 고융점 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; 및In the fourth unit of the electrospinning apparatus, a second high melting point polyvinylidene fluoride nanofiber nonwoven fabric is formed by electrospinning the high melting point polyvinylidene fluoride solution onto the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric. Stacking; And 상기 제1 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 제1 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포, 기재, 제2 저융점 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 고융점 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서대로 적층된 직물을 열융착하는 단계;The first high melting point polyvinylidene fluoride nanofiber nonwoven fabric, the first low melting point polyvinylidene fluoride nanofiber nonwoven fabric, the substrate, the second low melting point polyvinylidene fluoride nanofiber nonwoven fabric and the second high melting point polyvinylidene fluoride Thermally bonding the laminated fabrics in the order of the ride nanofiber nonwoven fabric; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 나일론을 용매에 용해시켜 나일론 용액을 제조하고 상기 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 투입하는 단계, 폴리비닐리덴 플루오라이드를 용매에 용해시켜 폴리비닐리덴 플루오라이드 용액을 제조하고 상기 전기방사장치의 제2 및 제4 유닛의 방사용액 주탱크에 투입하는 단계;Preparing a nylon solution by dissolving the nylon in a solvent, and injecting the nylon solution into the spinning solution main tanks of the first and third units of the electrospinning apparatus, and dissolving the polyvinylidene fluoride in the solvent to prepare a polyvinylidene fluoride solution. And injecting into the spinning solution main tanks of the second and fourth units of the electrospinning apparatus; 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 나일론 용액을 전기방사하여 섬유직경이 100 내지 150nm인 제1 나일론 나노섬유 부직포를 적층형성하는 단계;Stacking the first nylon nanofiber nonwoven fabric having a fiber diameter of 100 to 150 nm by electrospinning the nylon solution on one side of the substrate in the first unit of the electrospinning apparatus; 상기 전기방사장치의 제2 유닛에서는 상기 제1 나일론 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 섬유직경이 80 내지 150nm인 제1 폴리비닐리덴 플루오라이드 나노섬유를 적층형성하는 단계;Stacking the first polyvinylidene fluoride nanofibers having a fiber diameter of 80 to 150 nm by electrospinning the polyvinylidene fluoride solution on the first nylon nanofiber nonwoven fabric in the second unit of the electrospinning apparatus ; 상기 플립장치에서 상기 기재, 제1 나일론 나노섬유 부직포, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포로 이뤄진 직물의 상, 하를 180° 회전하는 단계;Rotating the top and bottom of the fabric of the substrate, the first nylon nanofiber nonwoven fabric and the first polyvinylidene fluoride nanofiber nonwoven fabric in the flip device; 상기 전기방사장치의 제3 유닛에서는 상기 제1 나일론 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 상기 나일론 용액을 전기방사하여 섬유직경이 100 내지 150nm인 제2 나일론 나노섬유 부직포를 적층형성하는 단계;In the third unit of the electrospinning apparatus for laminating the second nylon nanofiber nonwoven fabric having a fiber diameter of 100 to 150nm by electrospinning the nylon solution on the other side of the substrate on which the first nylon nanofiber nonwoven fabric is not laminated step; 상기 전기방사장치의 제4 유닛에서는 상기 제2 나일론 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 섬유직경이 80 내지 150nm인 제2 폴리비닐리덴 플루오라이드 나노섬유를 적층형성하는 단계; 및Stacking second polyvinylidene fluoride nanofibers having a fiber diameter of 80 to 150 nm by electrospinning the polyvinylidene fluoride solution on the second nylon nanofiber nonwoven fabric in the fourth unit of the electrospinning apparatus ; And 상기 기재, 제1 나일론 나노섬유 부직포, 제2 나일론 나노섬유 부직포, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 포함하는 적층된 직물을 열융착하는 단계;Thermally bonding the laminated fabric comprising the substrate, the first nylon nanofiber nonwoven fabric, the second nylon nanofiber nonwoven fabric, the first polyvinylidene fluoride nanofiber nonwoven fabric and the second polyvinylidene fluoride nanofiber nonwoven fabric; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a. 2개 이상의 유닛으로 이루어지고, 유닛 내에 위치하는 노즐블록의 노즐에 방사용액 주탱크가 독립적으로 연결설치되며, 유닛 사이에 직물을 회전시키는 플립장치가 구비되고, 각 유닛의 컬렉터에 위치되는 기재 상에 고분자 방사용액을 전기방사하는 전기방사장치에 의해 필터를 제조하는 제조방법에 있어서,It consists of two or more units, and the spinneret main tank is independently connected to the nozzle of the nozzle block located in the unit, and is provided with a flip device for rotating the fabric between the units, and on the substrate positioned in the collector of each unit. In the manufacturing method for producing a filter by an electrospinning apparatus for electrospinning a polymer spinning solution to 폴리우레탄을 용매에 용해시킨 폴리우레탄 용액을 상기 전기방사장치의 제1 및 제3 유닛의 방사용액 주탱크에 투입하고, 폴리비닐리덴 플루오라이드를 용매에 용해시킨 폴리비닐리덴 플루오라이드 용액을 상기 전기방사장치의 제2 및 제4 유닛의 방사용액 주탱크에 투입하는 단계;The polyurethane solution in which the polyurethane was dissolved in the solvent was introduced into the spinning solution main tanks of the first and third units of the electrospinning apparatus, and the polyvinylidene fluoride solution in which the polyvinylidene fluoride was dissolved in the solvent was used. Introducing into the spinning solution main tanks of the second and fourth units of the spinning device; 상기 전기방사장치의 제1 유닛에서는 기재의 일측면에 상기 폴리우레탄 용액을 전기방사하여 제1 폴리우레탄 나노섬유 부직포를 적층형성하는 단계;Laminating the first polyurethane nanofiber nonwoven fabric by electrospinning the polyurethane solution on one side of the substrate in the first unit of the electrospinning apparatus; 상기 전기방사장치의 제2 유닛에서는 상기 제1 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계;Stacking the first polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the polyvinylidene fluoride solution on the first polyurethane nanofiber nonwoven fabric in the second unit of the electrospinning apparatus; 상기 전기방사장치의 제2 유닛 후단부에 위치한 플립장치에서 상기 기재, 제1 폴리우레탄 나노섬유 부직포, 제1 폴리비닐리덴 플루오라이드 나노섬유 부직포의 순서로 적층된 직물의 상, 하를 180° 회전하는 단계;Rotate the top and bottom of the fabric laminated in the order of the substrate, the first polyurethane nanofiber nonwoven fabric, the first polyvinylidene fluoride nanofiber nonwoven fabric in a flip device located at the rear end of the second unit of the electrospinning apparatus Making; 상기 전기방사장치의 제3 유닛에서는 상기 제1 폴리우레탄 나노섬유 부직포가 적층되지 않은 상기 기재의 타측면에 상기 폴리우레탄 용액을 전기방사하여 제2 폴리우레탄 나노섬유 부직포를 적층형성하는 단계;Stacking the second polyurethane nanofiber nonwoven fabric by electrospinning the polyurethane solution on the other side of the substrate on which the first polyurethane nanofiber nonwoven fabric is not laminated in the third unit of the electrospinning apparatus; 상기 전기방사장치의 제4 유닛에서는 상기 제2 폴리우레탄 나노섬유 부직포 상에 상기 폴리비닐리덴 플루오라이드 용액을 전기방사하여 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 적층형성하는 단계; 및Stacking a second polyvinylidene fluoride nanofiber nonwoven fabric by electrospinning the polyvinylidene fluoride solution on the second polyurethane nanofiber nonwoven fabric in a fourth unit of the electrospinning apparatus; And 상기 기재와 상기 기재의 양면에 적층형성된 상기 제1 및 제2 폴리우레탄 나노섬유 부직포 및 상기 제1 및 제2 폴리비닐리덴 플루오라이드 나노섬유 부직포를 열융착시키는 단계;Thermally bonding the first and second polyurethane nanofiber nonwovens and the first and second polyvinylidene fluoride nanofiber nonwovens laminated on both sides of the substrate and the substrate; 를 포함하는 것을 특징으로 하는 기재 양면에 나노섬유를 포함하는 필터의 제조방법.Method for producing a filter comprising nanofibers on both sides of the substrate, characterized in that it comprises a.
PCT/KR2014/001578 2013-10-07 2014-02-26 Filter having nano-fiber on both surfaces of substrate thereof and method for manufacturing same Ceased WO2015053443A1 (en)

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KR1020130119489A KR101521601B1 (en) 2013-10-07 2013-10-07 Filter including polyvinylidene fluoride nanofiber and its manufacturing method
KR10-2013-0119491 2013-10-07
KR1020130119492A KR101543405B1 (en) 2013-10-07 2013-10-07 Filter including nylon nanofiber and polyvinylidene fluoride nanofiber gradient and its manufacturing method
KR10-2013-0119492 2013-10-07
KR10-2013-0119485 2013-10-07
KR1020130119488A KR101521600B1 (en) 2013-10-07 2013-10-07 Filter including polyvinylidene fluoride nanofiber and bicomponent substrate and its manufacturing method
KR1020130119486A KR101543403B1 (en) 2013-10-07 2013-10-07 Filter including polyvinylidene fluoride nanofiber and bicomponent substrate and its manufacturing method
KR10-2013-0119488 2013-10-07
KR10-2013-0119487 2013-10-07
KR1020130119490A KR101563596B1 (en) 2013-10-07 2013-10-07 Filter including nylon nanofiber and bicomponent substrate and its manufacturing method
KR1020130119493A KR101615678B1 (en) 2013-10-07 2013-10-07 Filter including polyvinylidene fluoride nanofiber on both sides of a substrate and its manufacturing method
KR10-2013-0119490 2013-10-07
KR1020130119491A KR101543404B1 (en) 2013-10-07 2013-10-07 Filter including polyvinylidene fluoride nanofiber having multi fiber-diameter group on both sides of a substrate and its manufacturing method
KR10-2013-0119489 2013-10-07
KR1020130119485A KR101543402B1 (en) 2013-10-07 2013-10-07 Filter including polyvinylidene fluoride nanofiber on both sides of a substrate and its manufacturing method
KR10-2013-0119493 2013-10-07
KR1020130119494A KR101543406B1 (en) 2013-10-07 2013-10-07 Filter comprising polyurethane and polyvinylidene fluoride nanofiber on both sides of a substrate and its manufacturing method
KR10-2013-0119494 2013-10-07
KR1020130119487A KR101579936B1 (en) 2013-10-07 2013-10-07 Filter including polyvinylidene fluoride-hot melt nanofiber on both sides of a bicomponent substrate and its manufacturing method
KR10-2013-0119486 2013-10-07

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