WO2013065794A1 - 透水不織布 - Google Patents
透水不織布 Download PDFInfo
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- WO2013065794A1 WO2013065794A1 PCT/JP2012/078358 JP2012078358W WO2013065794A1 WO 2013065794 A1 WO2013065794 A1 WO 2013065794A1 JP 2012078358 W JP2012078358 W JP 2012078358W WO 2013065794 A1 WO2013065794 A1 WO 2013065794A1
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- Prior art keywords
- nonwoven fabric
- water
- permeable
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
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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
- D04H1/40—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
- D04H1/4291—Olefin 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
Definitions
- the present invention relates to a polyolefin-based water-permeable nonwoven fabric, and more particularly to a water-permeable nonwoven fabric that is uniformly provided with water permeability so that urine and body fluids can be absorbed without stagnation when used as a surface material such as a sanitary material.
- Polyolefin-based nonwoven fabrics are used as sanitary materials such as disposable diapers and sanitary napkins and wet tissues because, for example, the material properties of the nonwoven fabrics make the skin feel comfortable without touching the skin. Moreover, since it is excellent in chemical resistance, it is used for applications requiring various water permeability such as industrial materials such as filters, wipers and battery separators. Since the polyolefin-based nonwoven fabric is hydrophobic, in order to use it for applications requiring water permeability, water permeability is imparted by performing water permeation treatment with a water-permeable agent such as a surfactant.
- a water-permeable agent such as a surfactant.
- Non-woven fabric water permeabilization methods include a dip method in which a non-woven fabric is impregnated in a water permeable agent, a spray method in which a water permeable agent is sprayed onto the non-woven fabric, and a gravure method in which a gravure roll is applied.
- polyolefin-based nonwoven fabrics are inherently hydrophobic, when a water-permeable agent such as a surfactant is diluted with water for water permeation treatment, uneven adhesion of the water-permeable agent tends to occur on the surface of the non-woven fabric and is partially water-repellent. In some cases, too much water-permeable agent was attached. For this reason, increasing the dilution ratio of the treatment liquid and applying a large amount of the treatment liquid to the non-woven fabric may reduce the adhesion unevenness of the water-permeable agent.
- a water-permeable agent such as a surfactant
- Patent Document 1 describes a slot coating method, a spray method, and a kiss coating method in which a water-permeable agent component is surely attached to each non-woven fabric fiber in order to eliminate adhesion unevenness.
- Patent Document 1 describes a slot coating method, a spray method, and a kiss coating method in which a water-permeable agent component is surely attached to each non-woven fabric fiber in order to eliminate adhesion unevenness.
- it has become essential to increase the speed of facilities as the production volume of nonwoven fabrics expands, and it is difficult to make uniform the water permeability of nonwoven fabrics due to uneven adhesion of water permeable agents and insufficient drying. It has become.
- An object of the present invention is to solve the above-described problems and provide a water-permeable nonwoven fabric with uniform water permeability that absorbs urine and body fluids without stagnation.
- the present inventors have found that a nonwoven fabric having an average value and a CV value of a water permeation 45 ° inclined flow length value, which will be described later, and an R value of a second water permeation durability index, which are not more than a certain value.
- the inventors have found that the above object can be achieved and have completed the present invention.
- the present invention is as follows.
- a nonwoven fabric composed of polyolefin-based thermoplastic fibers, the average value of the water permeation 45 ° inclined flow length value in the MD direction and the CV value are 90 mm or less and 5.0 or less, respectively, and the second water permeability A water-permeable nonwoven fabric having a durability index R value of 60% or less.
- the average value of the water permeation 45 ° inclined flow length value in the CD direction of the nonwoven fabric and the CV value are 90 mm or less and 5.0 or less, respectively, and the R value of the second water permeation durability index is 60% or less.
- the water-permeable nonwoven fabric as described in (1).
- the nonwoven fabric is a nonwoven fabric roll having a diameter of 30 cm or more, and the difference in the water permeation performance between the inner and outer layers is within ⁇ 5 mm in the average value of the water permeation 45 ° inclined flow length value in the MD direction and the CD direction.
- a water permeable nonwoven fabric provided with a uniform water permeable performance, particularly for surface materials such as sanitary materials.
- the present invention is described in detail below.
- the nonwoven fabric comprising the polyolefin-based thermoplastic fiber of the present invention was produced by a long fiber nonwoven fabric produced by a spunbond method, a nonwoven fabric produced by a melt blow method, and a card method or wet papermaking method using short fibers. Nonwoven fabric can be used.
- a long-fiber nonwoven fabric produced by a spunbond method is preferable.
- a continuous filament melt-spun by a spunbond method is used as a web, and the web is joined.
- the state of lamination may be laminated with SS, SSS, SSSS, or may be laminated like SM, SMS, SMMS, SMSMS.
- each layer may be formed with a different fineness, and fibers having special shapes such as irregular cross-section fibers, crimped fibers and hollow fibers may be laminated.
- thermocompression bonding for example, a web between heated embossed / flat rolls that can give joint points such as pinpoint, elliptical, diamond, and rectangular shapes. Can be joined through.
- the area ratio of thermocompression bonding in partial thermocompression bonding is preferably 5 to 40%, more preferably 5 to 25%, from the viewpoint of strength retention and flexibility.
- polyolefin-based thermoplastic fibers used in the present invention include polyethylene fibers, polypropylene fibers, and fibers made of a resin such as a copolymer of ethylene or propylene and another ⁇ -olefin.
- Polypropylene may be a polymer synthesized by a general Ziegler Natta catalyst, or may be a polymer synthesized by a single site active catalyst typified by metallocene.
- Other ⁇ -olefins are those having 3 to 10 carbon atoms, such as propylene, 1-butene, 1-pentene, 1-hexane, 4-methyl-1-pentene and 1-octene. It is done. These may be used alone or in combination of two or more. When a composite fiber is used, it may be a core sheath, side-by-side, split fiber or mixed fiber.
- the fiber shape may be not only a normal circular cross-sectional fiber but also a specially shaped fiber such as a modified cross-section fiber, a crimped fiber, and a hollow fiber.
- the thermoplastic fiber may be blended with a nucleating agent, a flame retardant, an inorganic filler, a pigment, a colorant, a heat stabilizer, an antistatic agent, and the like.
- the average single yarn fineness of the fibers constituting the nonwoven fabric is preferably 0.5 dtex or more and 3.5 dtex or less, more preferably 0.7 dtex or more and 3.0 dtex or less. It is preferably 0.5 dtex or more from the viewpoint of spinning stability, and it is important that it is 3.5 dtex or less from the viewpoint of the texture and strength of the nonwoven fabric.
- the basis weight of the nonwoven fabric is preferably 8 to 80 g / m 2 , more preferably 10 to 50 g / m 2 , and particularly preferably 10 to 30 g / m 2 .
- the basis weight is within the above range, the strength is sufficient, the eyes of the nonwoven fabric are moderate, and even when used as a surface material for sanitary materials such as disposable diapers, such as pulp fibers and polymer absorbers inside the absorber There is little dropout.
- the nonwoven fabric has a moderate rigidity and a good texture.
- the water-permeable nonwoven fabric of the present invention has the following characteristics in order to absorb urine and body fluids without stagnation.
- the average value of the water permeability 45 ° inclined flow length value in the MD direction of the nonwoven fabric is 90 mm or less, preferably 50 mm or less, and more preferably 35 mm or less.
- the CV value is 5.0 or less, preferably 3.5 or less. A method for measuring the water permeation 45 ° inclined flow length value will be described later.
- the R value of the second permeability durability index in the MD direction is 60% or less, preferably 40% or less, and more preferably 20% or less.
- a method for measuring the R value of the second water permeability durability index will also be described later.
- the average value of the water permeation 45 ° inclined flow length value is preferably 90 mm or less, more preferably 50 mm or less, and further preferably 35 mm or less.
- the CV value is 5.0 or less, More preferably, it is 3.5 or less.
- the R value of the second permeability durability index in the CD direction is also preferably 60% or less, more preferably 40% or less, and further preferably 20% or less.
- the difference between the average values of the water permeability 45 ° inclined flow length values in the MD direction and the CD direction is within ⁇ 5 mm, respectively. It is preferable that the difference between the average values of the second water permeation durability index is within ⁇ 20%.
- the non-woven fabric roll means a non-woven fabric manufactured and wound in a roll shape with a paper tube as a core by a winder, and may or may not be slit to an arbitrary width. Further, the roll diameter is generally 30 cm or more from the viewpoint of a long roll.
- the inner layer and outer layer of the nonwoven fabric roll are defined as the inner layer within 10% of the paper tube side of the distance obtained by subtracting the radius of the paper tube from the radius of the nonwoven fabric roll, and the outer layer within the outermost 10% of the nonwoven fabric roll.
- the nonwoven fabric roll is cut open, and the difference in water permeability of the nonwoven fabric sampled from the respective positions is defined as the difference in water permeability between the inner and outer layers of the roll.
- the wetting return index of the nonwoven fabric is preferably 2.5 g or less, more preferably 2.0 g or less, and further preferably 1.6 g or less. A method for measuring the wetting return index will be described later.
- Each above-mentioned characteristic value of a nonwoven fabric can be adjusted with the water-permeation treatment conditions of a nonwoven fabric.
- nonionic surfactants obtained by adding ethylene oxide to higher alcohols, higher fatty acids, alkylphenols, etc., as well as alkyl phosphates, in consideration of safety to the human body and process safety, etc.
- a single or a mixture of anionic surfactants such as a fetal salt and an alkyl sulfate is preferably used.
- polyether compounds, polyethylene ether-modified silicones, polyether-modified silicones, polyester compounds, polyamide compounds, polyglycerin compounds and the like are preferably used.
- the adhesion amount of a water permeable agent changes with the objective uses, for example, for sanitary materials
- the range of 0.1 wt% or more and 1.0 wt% or less is usually preferable with respect to the fiber, and more preferably 0.8. It is 2 wt% or more and 0.6 wt% or less.
- the water-permeable agent may be diluted with a solvent such as water and applied as an aqueous solution.
- the solution temperature of the applied water permeable agent is preferably 12 ° C. or more and 50 ° C. or less, and more preferably 15 ° C. or more and 35 ° C. or less from the viewpoint of uniform dispersion and foaming of the solution.
- the viscosity of the solution is preferably 0.50 mPa ⁇ s or more and 50 mPa ⁇ s or less, and more preferably 0.8 mPa ⁇ s or more and 20 mPa ⁇ s or less from the viewpoint that it can be more uniformly applied.
- the coating amount (wt%) on the nonwoven fabric is preferably 1.0 wt% or more and 65 wt% or less, more preferably 3.0 wt% or more and 60 wt% or less, and even more preferably 5.0 wt% or more and 50 wt% in any of the above coating methods. It is as follows.
- the gravure roll handle may be a lattice type or a pyramid type, but a diagonal type in which the water-permeable agent does not remain on the gravure cell bottom is preferable.
- the cell volume is also preferably from 5 cm 3 / m 2 to 40 cm 3 / m 2 , more preferably from 10 cm 3 / m 2 to 30 cm 3 / m 2 . If it is less than 5 cm 3 / m 2 , the coating amount is too small and uniform coating becomes difficult, and if it exceeds 40 cm 3 / m 2 , the coating amount increases too much, resulting in insufficient drying in the drying process and water permeability due to migration. Problems such as uneven adhesion of the agent occur.
- the depth of the gravure cell is 10 ⁇ m or more and 80 ⁇ m or less, and the interval is within a range of 80 mesh or more and 250 mesh or less so that the cell volume is the same.
- the blade for scraping off the liquid on the surface of the gravure may be a doctor blade method using a general hardened steel plate doctor or a rubber roll method using a surface rubber roll. From the viewpoint of durability, the rubber roll method is more preferable.
- the suppression pressure in the case of the doctor blade method is preferably 0.5 kg / cm or more and 1.0 kg / cm or less, and more preferably 0.6 kg / cm or more and 0.8 kg / cm or less.
- the suppression pressure is preferably 1.0 kg / cm or more and 5.0 kg / cm or less, more preferably 1.5 kg / cm or more and 3.5 kg / cm or less, within a rubber hardness range of 60 ° or more and 80 ° or less. preferable.
- the suppression pressure when the suppression pressure is within the above range, it is easy to suppress it uniformly in the CD direction, and there is little variation in the coating amount. If the pressure is too low, the coating tends to be non-uniform, and if it is too high, blade wear tends to occur, resulting in poor durability.
- the water-permeable nonwoven fabric of the present invention has a uniform water-permeable performance, and in particular for sanitary materials such as disposable diapers, sanitary napkins and incontinence pads, as a surface material, suppression of urine leakage and rash due to non-uniform water permeability. Can be applied as a cover for wrapping the absorber. It can also be used in other applications that require a water permeable function, such as wipe products, medical gowns, and skin care sheets.
- Average single yarn fineness (dtex) Cut the nonwoven fabric by 1 cm square at each location so that there are approximately 5 regular intervals in the CD direction of the nonwoven fabric to be measured, and measure the fiber diameter of the nonwoven fabric surface layer for each sample at 20 points using a microscope. The single yarn fineness was calculated from the value.
- Permeable 45 ° inclined flow length in MD and CD directions Place 10 sheets of toilet paper as an absorber on a 45 ° inclined plate, place a test cloth (20 cm square) on it, and set 0.1 cc of physiological saline dropwise from a height of 10 mm above the cloth. did. The distance that the physiological saline flowed from the dripping position to the end of absorption was read and used as the water permeation 45 ° inclined flow length value (mm). This measurement is arbitrarily performed at five points in the test cloth.
- CV value (standard deviation value / average value) ⁇ 100
- Second permeation durability index (%) in MD and CD directions 10 sheets of toilet paper are stacked as an absorbent, and a test cloth (20 cm ⁇ 30 cm) is placed thereon. Furthermore, a stainless steel plate having 10 holes with a diameter of 1.5 cm formed at equal intervals was placed thereon, and 0.3 cc of physiological saline was dropped from a height of 10 mm above the cloth located in each hole. After a minute has passed, the solution is dropped again in the same manner. After the second dropping, the number of holes (A) absorbed within 10 seconds was counted, and [((A) / 10 locations) ⁇ 100] was defined as the second permeation durability index (%).
- test cloths were sampled from 10 locations at 30 cm intervals in the MD direction, the above measurements were performed, and the average value and R value were determined.
- the R value is the difference between the maximum value and the minimum value of the measured values.
- test cloths were sampled from 10 locations so that the CD direction was equally spaced within the width of the nonwoven fabric, the above measurements were performed, and the average value and R value were obtained.
- the 3.6 kg weight is once removed, and a pre-weighed measurement filter paper (HOLINGSWORTH & VOSE.COMPANY “ERT-MED” 12.5 cm square ⁇ 2 sheets) is quickly placed on the test cloth, and again 3.6 kg. Gently put the weight. After 2 minutes, the weight increase of the measuring filter paper is weighed. The value (g) of the increase was taken as the wetting return index. A total of 20 test cloths were collected from 10 places at intervals of 30 cm in the MD direction and 10 places at regular intervals within the width of the nonwoven fabric in the CD direction, the above measurements were performed, and the average value thereof was obtained.
- ERT-MED 12.5 cm square ⁇ 2 sheets
- the inner layer and the outer layer of the nonwoven fabric roll are defined as the inner layer within 10% of the paper tube side of the distance obtained by subtracting the radius of the nonwoven fabric roll and the outer layer within the outermost 10% of the nonwoven fabric roll.
- the nonwoven fabric roll was cut open, and the measurements described in 2 to 4 were performed at the positions within the above ranges, and the difference in water permeability between the inner and outer layers of the roll was determined.
- Permeation amount of water permeable agent (wt%)
- W1 of the nonwoven fabric sample to which the water-permeable agent conditioned for 24 hours at 25 ° C. ⁇ 40% RH was attached was attached, and the weight (W2) of the water-permeable agent Soxhlet extracted from this nonwoven fabric sample with methanol were measured.
- W2 of the water-permeable agent Soxhlet extracted from this nonwoven fabric sample with methanol were measured.
- the permeation amount C (wt%) of the water permeable agent was determined from the following formula.
- C (wt%) [W2 / W1] ⁇ 100
- Sampling of the nonwoven fabric sample is performed at a distance of 10 cm at intervals of 30 cm in the MD direction and 10 locations at a regular interval within the width of the nonwoven fabric in the CD direction so that the width of the nonwoven fabric sample is about 2 g when the cutting width is in the range of 5 cm to 10 cm. Collect a total of 20 test cloths. The said measurement was performed and those average values were calculated
- Coating amount (wt%) ⁇ permeate consumption (g) / [nonwoven fabric weight (g / m 2 ) ⁇ width (m) ⁇ processing speed (m / min) ⁇ 60 (min)] ⁇ ⁇ 100
- the laminated web is transported and partially crimped with a thermocompression roll combining an engraving roll and a smooth roll at an upper and lower roll temperature of 135 ° C. and a pressure of 60 kg / cm, so that the line speed is 18 g / m 2.
- a thermocompression roll combining an engraving roll and a smooth roll at an upper and lower roll temperature of 135 ° C. and a pressure of 60 kg / cm, so that the line speed is 18 g / m 2.
- the web was formed by pulling at a spinning speed of 3000 m / min and receiving on a moving conveyor net. This web is conveyed, and the line speed is adjusted so that the basis weight is 20 g / m 2 by partial pressure bonding with a thermocompression roll combining a sculpture roll and a smooth roll at an upper and lower roll temperature of 120 ° C. and a pressure of 50 kg / cm 2.
- a spunbonded nonwoven fabric having a single yarn fineness of 2.8 dtex was obtained.
- the density of the sheath core filament was 0.94 g / cm 3 .
- Polypropylene resin (density 0.91 g / cm 3 , MFR60 measured under the conditions shown in Table 1 of JIS-K7210) was quantitatively extruded at an extrusion temperature of 230 ° C. and 2000 g / min, and a filament group was spun using a spinneret. Using a high-speed airflow traction device, this was pulled at a spinning speed of 3000 m / min and received on a moving conveyor net to form a web.
- polypropylene resin (MFR900) is quantitatively extruded at 250 g / min at an extrusion temperature of 280 ° C., and a filament group is spun out using a spinneret. Then, melt blowing was performed to laminate the melt blow web. Furthermore, the web obtained by carrying out similarly to the 1st layer was laminated
- MFR900 polypropylene resin
- Example 1 A non-woven fabric obtained in the production of non-woven fabric (A) was adjusted by applying a 1 wt% aqueous solution of a water-permeable agent composed of a mixture of a polyether compound and a polyethylene ether-modified silicone to a liquid temperature of 20 ° C. and a liquid viscosity of 2.3 mPa ⁇ s. It was applied using a gravure roll having a diagonal pattern of 120 mesh and a cell volume of 22 cm 3 / m 2 so that the amount was 30 wt%, and then dried by passing through a 120 ° C. cylinder dryer. The winding was performed with a paper tube as a core and a long length.
- a water-permeable agent composed of a mixture of a polyether compound and a polyethylene ether-modified silicone
- the used polyether compound and polyether modified silicone were obtained by the following method.
- the polyether compound was obtained by reacting glycerin with propylene oxide to obtain an adduct having an average degree of polymerization of 50. Subsequently, ethylene oxide was subjected to addition polymerization so that the average degree of polymerization was 15 to the obtained adduct. This was reacted with stearic acid to obtain a polyether compound.
- the polyether-modified silicone is obtained by adding an ethylene oxide reactant of methyl alcohol to dimethylhydroxypolysiloxane, the number of siloxy acid repeats (Si) is 22, the number of ethylene oxide-added siloxy acid repeats (SiE) is 2, and the number of ethylene oxide repeats A polyethylene ether-modified silicone having an (EO) of 40 was obtained.
- the obtained water-permeable nonwoven fabric had no shortage of drying, the average value of the water flow 45 ° inclined flow length value in the MD direction and the CV value were 21 mm and 2.8, respectively, and the R value of the second water-permeable durability index was 0. %Met.
- Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 2 A nonwoven fabric was obtained in the same manner except that the line speed was adjusted so that the basis weight was 15 g / m 2 in the production of nonwoven fabric (A). A water permeable agent was applied to the obtained nonwoven fabric in the same manner as in Example 1 to obtain a water permeable nonwoven fabric. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 3 A nonwoven fabric was obtained in the same manner except that the line speed was adjusted so that the basis weight was 10 g / m 2 in the production of nonwoven fabric (A). A water permeable agent was applied to the obtained nonwoven fabric in the same manner as in Example 1 to obtain a water permeable nonwoven fabric. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 4 In the nonwoven fabric production (A), a discharge amount of 45 W ⁇ min / m 2 (discharge degree: 4.0 W / cm 2 ) was similarly obtained except that the spinning speed was adjusted so that the fineness was 2.0 dtex. After the corona discharge treatment under the conditions of 2 ), a 1 wt% aqueous solution of a water-permeable agent composed of a mixture of hexaglycerin monostearate, polyether-modified silicone and polyoxyalkylene castor oil ether is set at a liquid temperature of 20 ° C. and a liquid viscosity of 2.
- a water-permeable nonwoven fabric was obtained by applying a water-permeable agent in the same manner as in Example 1 except that the amount was adjusted to 3 mPa ⁇ s and the coating amount was 30 wt%.
- the water-permeable agent used was a mixture of hexaglycerin monostearate 40 wt%, polyether-modified silicone 45 wt% and polyoxyalkylene castor oil ether 15 wt%. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 5 In the production of non-woven fabric (A), the non-woven fabric was similarly prepared except that the extrusion rate per layer was 1800 g / min and the spinning speed was adjusted so that the basis weight was 15 g / m 2 and the fineness was 1.1 dtex. Got. A water permeable agent was applied to the obtained nonwoven fabric in the same manner as in Example 1 to obtain a water permeable nonwoven fabric. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 6 A water-permeable nonwoven fabric was obtained in the same manner as in Example 1 except that coating was performed using a gravure roll having a diagonal pattern of 100 mesh and a cell volume of 17 cm 3 / m 2 so that the coating amount was 20 wt%. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 7 A water-permeable nonwoven fabric was obtained in the same manner as in Example 1 except that coating was performed using a gravure roll having a diagonal pattern of 160 mesh and a cell volume of 25 cm 3 / m 2 so that the coating amount was 50 wt%. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 8 A water-permeable nonwoven fabric was obtained in the same manner as in Example 1 except that the water-permeable agent aqueous solution was 2 wt%, the liquid temperature was adjusted to 25 ° C., the liquid viscosity was adjusted to 5.3 mPa ⁇ s, and the coating amount was 40 wt%. It was. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 9 A water-permeable nonwoven fabric was obtained in the same manner as in Example 1, except that the water-permeable agent aqueous solution was 5 wt%, the liquid temperature was adjusted to 15 ° C., the liquid viscosity was adjusted to 26 mPa ⁇ s, and the coating amount was 10 wt%. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 10 In the production of the nonwoven fabric (A), an ethylene / propylene random copolymer resin having an ethylene component content of 4.3 mol% (density 0.91 g / cm 3 , conditions of Table 1 of JIS-K7210) instead of polypropylene resin A non-woven fabric was obtained in the same manner except that MFR24) measured in (1) was used. Example 1 except that the obtained nonwoven fabric was adjusted to a water temperature of 30 ° C. and a liquid viscosity of 8.0 mPa ⁇ s with a water permeable agent aqueous solution of 1 wt%, and the coating amount was 30 wt%. Thus, a water-permeable nonwoven fabric was obtained. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 11 Other than that the non-woven fabric obtained in the production of non-woven fabric (B) was applied so that the water-permeable agent aqueous solution was 1 wt%, the liquid temperature was 30 ° C., the liquid viscosity was 8.0 mPa ⁇ s, and the coating amount was 30 wt%. Obtained a water-permeable nonwoven fabric in the same manner as in Example 1. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 12 A water-permeable nonwoven fabric was obtained in the same manner as in Example 1 for the nonwoven fabric obtained by the production of nonwoven fabric (C). Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 13 A non-woven fabric obtained in the production of non-woven fabric (C) was adjusted to a water-permeable agent 3 wt% aqueous solution composed of a mixture of a polyether compound and polyethylene ether-modified silicone at a liquid temperature of 20 ° C and a liquid viscosity of 10 mPa ⁇ s. The coating was performed while adjusting the holding angle to the stainless applicator roll so that the coating amount was 10 wt%. Next, it was dried by passing through a cylinder dryer at 120 ° C. and wound up. The winding was performed with a paper tube as a core and a long length. The same polyether compound and polyethylene ether-modified silicone as used in Example 1 were used. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- a non-woven fabric obtained in the manufacture of non-woven fabric (A) is adjusted to a 3 wt% aqueous solution of a water-permeable agent composed of a mixture of a polyether compound and polyethylene ether-modified silicone at a liquid temperature of 30 ° C. and a liquid viscosity of 1.7 mPa ⁇ s.
- a water-permeable agent composed of a mixture of a polyether compound and polyethylene ether-modified silicone at a liquid temperature of 30 ° C. and a liquid viscosity of 1.7 mPa ⁇ s.
- After coating with a coater it was adjusted by niping with a pair of rubber nip rolls so that the coating amount would be 50 wt%, then dried by passing through a 120 ° C. cylinder dryer and wound up. The winding was performed with a paper tube as a core and a long length.
- the same polyether compound and polyethylene ether-modified silicone as used in Example 1
- the obtained water-permeable nonwoven fabric had an average value of the water-permeable 45 ° inclined flow length value in the MD direction of 20 mm, its CV value was 6.3, and the measured values varied greatly. And as for the 2nd water-permeable durability index in MD direction, R value was 50%, and the difference of the average value in a roll inner and outer layer was 50%. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 2 A water-permeable nonwoven fabric was obtained in the same manner as in Example 1 except that coating was performed using a gravure roll having a diagonal pattern of 150 mesh and a cell volume of 42 cm 3 / m 2 so that the coating amount was 70 wt%. The obtained water-permeable nonwoven fabric was partially moist. Further, the average value of the water permeation 45 ° inclined flow length value in the MD direction and the CV value were 23 mm and 5.3, respectively, the difference between the average values in the inner and outer layers of the roll was -7 mm, and the variation in the measured values was large. In addition, the second water permeability durability index had an R value of 20% and a wetting return index of 2.60 g. Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Example 3 A water-permeable nonwoven fabric was obtained in the same manner as in Example 1 except that the water-permeable agent aqueous solution was adjusted to 5 wt%, the liquid temperature was adjusted to 15 ° C., the liquid viscosity was 55 mPa ⁇ s, and the coating amount was 15 wt%.
- the obtained nonwoven fabric had an average value of the water permeation 45 ° inclined flow length value in the MD direction and a CV value of 22 mm and 6.5, respectively, and the variation in measured values was large.
- the difference between the average values of the inner and outer layers of the roll was ⁇ 3 mm, the R permeability durability index was 40%, and the wetting return index was 2.09 g.
- Table 1 shows various measurement results of the water-permeable nonwoven fabric obtained.
- Table 1 shows the following. It can be seen that the water-permeable nonwoven fabric of the present invention has the water-permeable performance required for the surface material uniformly in both the MD direction and the CD direction. Particularly in sanitary materials such as disposable diapers, sanitary napkins, and incontinence pads, it is possible to suppress urine leakage and rash due to non-uniform water permeability.
- the water-permeable nonwoven fabric of the present invention is not only suitable for sanitary materials but also widely used in other applications that require a water-permeable function, for example, wipe products, medical gowns, skin care sheets, etc. can do.
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Abstract
Description
(1)ポリオレフィン系熱可塑性繊維からなる不織布であり、該不織布のMD方向における透水45°傾斜流長値の平均値およびCV値がそれぞれ90mm以下および5.0以下であり、且つ、2回目透水耐久指数のR値が60%以下であることを特徴とする透水不織布。
(2)不織布のCD方向における透水45°傾斜流長値の平均値およびCV値がそれぞれ90mm以下および5.0以下であり、且つ、2回目透水耐久指数のR値が60%以下である上記(1)に記載の透水不織布。
(3)不織布が30cm以上の径からなる不織布ロールであり、その内外層における透水性能の差として、MD方向およびCD方向において、透水45°傾斜流長値の平均値の差がそれぞれ±5mm以内であり、且つ2回目透水耐久指数の平均値の差がそれぞれ±20%以内である上記(1)又は(2)に記載の透水不織布。
(4)不織布の濡れ戻り指数が2.5g以下である上記(1)~(3)のいずれか一項に記載の透水不織布。
(5)ポリオレフィン系熱可塑性繊維の平均単糸繊度が0.5dtex以上3.5dtex以下である上記(1)~(4)のいずれか一項に記載の透水不織布。
(6)ポリオレフィン系熱可塑性繊維がポリプロピレン系熱可塑性繊維からなる上記(1)~(5)のいずれか一項に記載の透水不織布。
(7)不織布が長繊維不織布からなる上記(1)~(6)のいずれか一項に記載の透水不織布。
(8)(1)~(7)のいずれか一項に記載の不織布を用いてなる使い捨て衛生材料。
(9)使い捨てオムツ、生理用ナプキン又は失禁パッドの形態である上記(8)に記載の使い捨て衛生材料。
本発明のポリオレフィン系熱可塑性繊維からなる不織布には、スパンボンド法により製造された長繊維不織布、メルトブロー法により製造された不織布、および短繊維を用いたカード法または湿式抄紙法などで製造された不織布を用いることが出来る。
さらに、熱可塑性繊維には、核剤、難燃剤、無機充填剤、顔料、着色剤、耐熱安定剤、帯電防止剤などを配合したものでも良い。
測定する不織布のCD方向に概ね等間隔で5ヶ所となるように、各ヶ所で不織布を1cm角切取り、不織布表層の繊維の直径をマイクロスコープを用いて各試料について各20点測定し、その平均値から単糸繊度を算出した。
45°傾斜板上に、吸収体としてトイレットペーパーを10枚重ねて、その上に試験布(20cm角)を置いてセットし、布の上方10mmの高さから0.1ccの生理食塩水を滴下した。滴下位置から吸収終了までの生理食塩水が流れ落ちた距離を読み取り、透水45°傾斜流長値(mm)とした。この測定を試験布内で任意に5点行なう。MD方向の場合は、MD方向に30cm間隔で10ヶ所 の試験布を採取し、上記測定を行ない、その平均値とCV値(CV値=(標準偏差値/平均値)×100)を求めた。また、CD方向の場合は、CD方向に不織布の幅内で等間隔となるように10ヶ所の試験布を採取し、同様に測定し、その平均値とCV値を求めた。
吸収体としてトイレットペーパーを10枚重ねて、その上に試験布(20cm×30cm)を置く。さらにその上に直径1.5cmの穴を等間隔に10ヶ所開けたステンレス製の板を置き、それぞれの穴に位置する布の上方10mmの高さから生理食塩水0.3ccを滴下し、3分間経過後、再度、同様に滴下する。2度目の滴下後、10秒以内に吸収される穴の数(A)を数え、[((A)/10ヶ所)×100]を2回目透水耐久指数(%)とした。MD方向の場合は、MD方向に30cm間隔で10ヶ所 から試験布を採取し、上記測定を行ない、その平均値とR値を求めた。なお、R値とは測定値の最大値と最小値の差ことである。同様に、CD方向の場合は、CD方向に不織布の幅内で等間隔となるように10ヶ所から試験布を採取し、上記測定を行ない、その平均値とR値を求めた。
吸収体として、吸収体の特性を一定化しておくため、特定濾紙(HOLLINGSWORTH&VOSE.COMPANY製“ERT-FE3”10cm角×5枚重ね)の上に試験布(10cm角)を置く。さらにその上に10cm角で中央に直径25mmの穴を設けた板(約800g)を置き、中央穴の布の上部25mm高さより、生理食塩水(吸収体重量の3.5倍の液量)を滴下し、吸収させる。次に試験布の上の板を取り除き、3.6kgの錘(10cm角)をしずかに載せて3分間かけ、吸収体中の液の分布を一定化する。次いで、3.6kgの錘を一旦取り除き、試験布の上にあらかじめ秤量した測定用濾紙(HOLLINGSWORTH&VOSE.COMPANY製“ERT-MED”12.5cm角×2枚)を速やかに置き、再度、3.6kgの錘をしずかに載せる。2分後にその測定用濾紙の重量増加を秤量する。その増加分の値(g)を濡れ戻り指数とした。MD方向に30cm間隔で10ヶ所、CD方向に不織布の巾内で等間隔に10ヶ所から合計20枚の試験布を採取し、上記測定を行ない、それらの平均値を求めた。
不織布ロールの内層および外層とは不織布ロール半径から紙管半径を差し引いた距離の紙管側10%以内を内層とし、不織布ロール最外側10%以内を外層とする。不織布ロールを切り開き、上記各々範囲内の位置において上記2~4に記載の測定を行ない、ロール内外層透水性能の差とした。
25℃×40%RHの温湿度で24時間調湿した透水剤が付着した不織布試料の重量(W1)および、この不織布試料からメタノールを用いてソックスレー抽出した透水剤の重量(W2)を測定し、透水剤純分付着量C(wt%)を下記の式より求めた。
C(wt%)=[W2/W1]×100
不織布試料のサンプリングはMD方向に30cm間隔で10ヶ所、CD方向に不織布の巾内で等間隔に10ヶ所から、切取り巾が5cm~10cm範囲で不織布試料が約2gとなるような長さで切取り、合計20枚の試験布を採取する。上記測定を行ない、それらの平均値を透水剤純分付着量(wt%)として求めた。
透水付与加工1時間分の透水液消費量から下記式にて算出した値を透水剤溶液の塗布量(wt%)とした。
塗布量(wt%)={透水液消費量(g)/〔不織布目付(g/m2)×幅(m)×加工速度(m/min)×60(min)〕}×100
ポリプロピレン樹脂(密度0.91g/cm3、JIS-K7210の表1の条件で測定したMFR60)を押出温度230℃にて2000g/minを定量的に押出し、紡糸口金を用いてフィラメント群を紡出し、高速気流牽引装置を使用してこれを3000m/minの紡糸速度で牽引し、移動するコンベアネット上に受けてウェブを形成した。次いで、得られたウェブの搬送中に、上記と同様にして得られるウェブを積層し、さらに同様のウェブをもう1層積層し、SSSとなるようにウェブを形成した。この積層ウェブを搬送し、彫刻ロールと平滑ロールを組み合わせた熱圧着ロールにて、上下ロール温度135℃、且つ60kg/cmの圧力で部分圧着して、目付18g/m2となるようにライン速度を調整し、単糸繊度2.8dtexのスパンボンド不織布を得た。
鞘成分に融点130℃の高密度ポリエチレン(密度0.96g/cm3)を用い、芯成分に融点165℃のポリプロピレン(密度0.91g/cm3)を用い、それぞれを二つの押出機より押出温度220℃にて2000g/minを定量的に押出し、紡糸口金を用いて、鞘芯フィラメント群(鞘芯比=50/50)となるように紡出し、高速気流牽引装置を使用してこれを3000m/minの紡糸速度で牽引し、移動するコンベアネット上に受けてウェブを形成した。このウェブを搬送し、彫刻ロールと平滑ロールを組み合わせた熱圧着ロールにて、上下ロール温度120℃、且つ50kg/cmの圧力で部分圧着して、目付20g/m2となるようにライン速度を調整し、単糸繊度2.8dtexのスパンボンド不織布を得た。なお、単糸繊度の算出に当たって、上記鞘芯フィラメントの密度は0.94g/cm3とした。
ポリプロピレン樹脂(密度0.91g/cm3、JIS-K7210の表1の条件で測定したMFR60)を押出温度230℃にて2000g/minを定量的に押出し、紡糸口金を用いてフィラメント群を紡出し、高速気流牽引装置を使用してこれを3000m/minの紡糸速度で牽引し、移動するコンベアネット上に受けてウェブを形成した。次いで、得られたウェブ上に、ポリプロピレン樹脂(MFR900)を押出温度280℃にて250g/minを定量的に押出し、紡糸口金を用いてフィラメント群を紡出し、ノズル近傍から温度270℃のホットエアにて溶融吹付けを行い、メルトブローウェブを積層させた。さらに1層目と同様にして得られるウェブを積層し、SMSとなるようにウェブを形成した。この積層ウェブを搬送し、彫刻ロールと平滑ロールを組み合わせた熱圧着ロールにて、上下ロール温度135℃、且つ60kg/cmの圧力で部分圧着して、目付10g/m2となるようにライン速度を調整し、単糸繊度1.8dtexの不織布を得た。なお、単糸繊度はS層の単糸繊度である。
不織布の製造(A)で得られた不織布に、ポリエーテル化合物とポリエチレンエーテル変性シリコーンとの混合物からなる透水剤の1wt%水溶液を液温20℃、液粘度2.3mPa・sに調整し、塗布量が30wt%となるように、斜線柄120メッシュ、セル容積22cm3/m2のグラビアロールを用いて塗布し、次いで、120℃のシリンダードライヤーに通して乾燥させ巻き取った。巻取りは紙管を芯とし長尺巻取りを行なった。なお、使用したポリエーテル化合物及びポリエーテル変性シリコーンは下記の方法で得た。
ポリエーテル化合物は、グリセリンにプロピレンオキシドを反応させ、平均重合度50の付加物を得た。次いで、得られた付加物にエチレンオキシドを平均重合度15となるように付加重合した。これにステアリン酸を反応させ、ポリエーテル化合物を得た。
ポリエーテル変性シリコーンは、ジメチルヒドロキシポリシロキサンにメチルアルコールのエチレンオキシド反応物を付加して、シロキ酸の繰り返し数(Si)が22、エチレンオキシド付加シロキ酸の繰り返し数(SiE)が2、エチレンオキシドの繰り返し数(EO)が40のポリエチレンエーテル変性シリコーンを得た。
不織布の製造(A)において、目付15g/m2となるようにライン速度を調整したこと以外は、同様にして不織布を得た。得られた不織布に実施例1と同様にして透水剤を付与して透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(A)において、目付10g/m2となるようにライン速度を調整したこと以外は、同様にして不織布を得た。得られた不織布に実施例1と同様にして透水剤を付与して透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(A)において、繊度を2.0dtexとなるように紡糸速度を調整したこと以外は同様にして得られた不織布に、放電量45W・min/m2(放電度4.0W/cm2)の条件でコロナ放電処理を行った後、ヘキサグリセリンモノステアリン酸エステル、ポリエーテル変性シリコーンおよびポリオキシアルキレンひまし油エーテルの混合物からなる透水剤の1wt%水溶液を液温20℃および液粘度2.3mPa・sに調整し、塗布量が30wt%となるようにしたこと以外は、実施例1と同様にして透水剤を付与して透水不織布を得た。
なお、使用した透水剤はヘキサグリセリンモノステアリン酸エステル40wt%、ポリエーテル変性シリコーン45wt%及びポリオキシアルキレンひまし油エーテル15wt%との混合物からなるものを用いた。
得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(A)において、目付が15g/m2、繊度が1.1dtexとなるように、1層当りの押出量を1800g/minとし、紡糸速度を調整したこと以外は、同様にして不織布を得た。得られた不織布に実施例1と同様にして透水剤を付与して透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
塗布量が20wt%となるように、斜線柄100メッシュ、セル容積17cm3/m2のグラビアロールを用いて塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
塗布量が50wt%となるように、斜線柄160メッシュ、セル容積25cm3/m2のグラビアロールを用いて塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
透水剤水溶液を2wt%とし、液温25℃、液粘度5.3mPa・sに調整し、塗布量が40wt%となるように塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
透水剤水溶液を5wt%とし、液温15℃、液粘度26mPa・sに調整し、塗布量が10wt%となるように塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(A)において、ポリプロピレン樹脂の代わりに、エチレン成分含有量が4.3モル%のエチレン・プロピレンランダム共重合体樹脂(密度0.91g/cm3、JIS-K7210の表1の条件で測定したMFR24)を用いたこと以外は、同様にして不織布を得た。得られた不織布に、透水剤水溶液を1wt%とし、液温30℃、液粘度8.0mPa・sに調整し、塗布量が30wt%となるように塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(B)で得られた不織布に、透水剤水溶液を1wt%とし、液温30℃、液粘度8.0mPa・sに調整し、塗布量が30wt%となるように塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(C)で得られた不織布に、実施例1と同様にして透水不織布を得た。得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(C)で得られた不織布に、ポリエーテル化合物とポリエチレンエーテル変性シリコーンとの混合物からなる透水剤の3wt%水溶液を液温20℃、液粘度10mPa・sに調整し、キスコーターにて、塗布量が10wt%となるように、ステンレス製アプリケーターロールへの抱角を調整しながら塗布した。次いで、120℃のシリンダードライヤーに通して乾燥させ巻き取った。巻取りは紙管を芯とし長尺巻取りを行なった。なお、用いたポリエーテル化合物とポリエチレンエーテル変性シリコーンは、実施例1と同様のものを用いた。得られた透水不織布の各種測定結果を表1に示す。
不織布の製造(A)で得られた不織布に、ポリエーテル化合物とポリエチレンエーテル変性シリコーンとの混合物からなる透水剤の3wt%水溶液を液温30℃、液粘度1.7mPa・sに調整し、ディップコーターにて塗布後、塗布量が50wt%となるように一対のゴムニップロールでニップして調整し、次いで、120℃のシリンダードライヤーに通して乾燥させ巻き取った。巻取りは紙管を芯とし長尺巻取りを行なった。なお、用いたポリエーテル化合物とポリエチレンエーテル変性シリコーンは、実施例1と同様のものを用いた。
塗布量が70wt%となるように、斜線柄150メッシュ、セル容積42cm3/m2のグラビアロールを用いて塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた透水不織布は、部分的に湿り気を有していた。また、MD方向における透水45°傾斜流長値の平均値およびCV値がそれぞれ23mmおよび5.3であり、ロール内外層における平均値の差も-7mmもあり、測定値のバラツキが大きかった。且つ、2回目透水耐久指数はR値が20%であり、濡れ戻り指数は2.60gであった。得られた透水不織布の各種測定結果を表1に示す。
透水剤水溶液を5wt%とし、液温15℃、液粘度55mPa・sに調整し、塗布量が15wt%となるように塗布したこと以外は、実施例1と同様にして透水不織布を得た。得られた不織布は、MD方向における透水45°傾斜流長値の平均値およびCV値がそれぞれ22mmおよび6.5であり、測定値のバラツキが大きかった。ロール内外層における平均値の差は-3mmであり、且つ、2回目透水耐久指数はR値が40%であり、濡れ戻り指数は2.09gであった。得られた透水不織布の各種測定結果を表1に示す。
Claims (9)
- ポリオレフィン系熱可塑性繊維からなる不織布であり、該不織布のMD方向における透水45°傾斜流長値の平均値およびCV値がそれぞれ90mm以下および5.0以下であり、且つ、2回目透水耐久指数のR値が60%以下であることを特徴とする透水不織布。
- 不織布のCD方向における透水45°傾斜流長値の平均値およびCV値がそれぞれ90mm以下および5.0以下であり、且つ、2回目透水耐久指数のR値が60%以下である請求項1に記載の透水不織布。
- 不織布が30cm以上の径からなる不織布ロールであり、その内外層における透水性能の差として、MD方向およびCD方向において、透水45°傾斜流長値の平均値の差が±5mm以内であり、且つ2回目透水耐久指数の平均値の差が±20%以内である請求項1又は2に記載の透水不織布。
- 不織布の濡れ戻り指数が2.5g以下である請求項1~3のいずれか一項に記載の透水不織布。
- ポリオレフィン系熱可塑性繊維の平均単糸繊度が0.5dtex以上3.5dtex以下である請求項1~4のいずれか一項に記載の透水不織布。
- ポリオレフィン系熱可塑性繊維がポリプロピレン系熱可塑性繊維である請求項1~5のいずれか一項に記載の透水不織布。
- 不織布が長繊維不織布からなる請求項1~6のいずれか一項に記載の透水不織布。
- 請求項1~7のいずれか一項に記載の不織布を用いてなる使い捨て衛生材料。
- 使い捨てオムツ、生理用ナプキン又は失禁パッドの形態である請求項8に記載の使い捨て衛生材料。
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015132038A (ja) * | 2013-12-12 | 2015-07-23 | 花王株式会社 | 長繊維不織布 |
| JP2015134979A (ja) * | 2011-11-02 | 2015-07-27 | 旭化成せんい株式会社 | 透水不織布 |
| WO2016098796A1 (ja) * | 2014-12-17 | 2016-06-23 | 花王株式会社 | 液膜開裂剤 |
| JP2020073741A (ja) * | 2014-10-31 | 2020-05-14 | 松本油脂製薬株式会社 | 繊維処理剤、それが付着した透水性繊維および不織布の製造方法 |
| WO2020235207A1 (ja) * | 2019-05-20 | 2020-11-26 | 花王株式会社 | 吸収性物品包装体 |
| JP2022502575A (ja) * | 2018-08-17 | 2022-01-11 | オーアンドエム ハリヤード インコーポレイテッド | 個人用防護用物品の湿潤性sms素材 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9744755B2 (en) * | 2013-04-01 | 2017-08-29 | 3M Innovative Properties Company | Method of making absorbent foam composites |
| KR102433347B1 (ko) * | 2015-12-22 | 2022-08-17 | 도레이첨단소재 주식회사 | 전이 안정성이 우수한 친수성 장섬유 스펀본드 부직포 및 그 제조방법 |
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| CN110234804A (zh) | 2017-01-27 | 2019-09-13 | 东丽株式会社 | 纺粘无纺布 |
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| WO2022025211A1 (ja) * | 2020-07-31 | 2022-02-03 | 三井化学株式会社 | 不織布及び衛生材料 |
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| CN112976269A (zh) * | 2021-02-07 | 2021-06-18 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | 一种混凝土高效保湿养护毯及其生产工艺 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302568A (ja) * | 1995-03-09 | 1996-11-19 | Mitsui Petrochem Ind Ltd | 親水性不織布 |
| JPH1053955A (ja) * | 1996-08-02 | 1998-02-24 | Asahi Chem Ind Co Ltd | 親水性処理剤を付与したポリオレフィン系不織布 |
| JP2004076165A (ja) * | 2002-08-09 | 2004-03-11 | Toyobo Co Ltd | 衛生材料用繊維およびそれを用いた不織布 |
| JP2004156163A (ja) * | 2002-11-05 | 2004-06-03 | Asahi Kasei Fibers Corp | 親水性ポリオレフィン不織布 |
| JP2004250828A (ja) * | 2003-02-20 | 2004-09-09 | Asahi Kasei Fibers Corp | 使い捨て衛生材料用不織布およびその製造法 |
| JP2008038277A (ja) * | 2006-08-04 | 2008-02-21 | Asahi Kasei Fibers Corp | 衛生材料用ポリオレフィン系長繊維不織布 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW554106B (en) * | 2000-06-13 | 2003-09-21 | Idemitsu Unitech Co Ltd | Spunbonded nonwoven fabric and absorbent article |
| US20060182965A1 (en) * | 2003-04-01 | 2006-08-17 | Hidetoshi Kitaguchi | Water-permeability imparting agent and fiber having the agent applied thereto |
| FR2860799B1 (fr) * | 2003-10-08 | 2006-02-17 | Rhodia Chimie Sa | Compositions de revetements comprenant une dispersion aqueuse de polymere filmogene et une silicone polyether, leur procede de preparation et leurs utilisations |
| KR101310108B1 (ko) * | 2006-02-17 | 2013-09-24 | 마쓰모토유시세이야쿠 가부시키가이샤 | 투수성 부여제 및 그것이 부착된 투수성 섬유 |
| CN104024517B (zh) * | 2011-11-02 | 2015-12-02 | 旭化成纤维株式会社 | 透水无纺布 |
-
2012
- 2012-11-01 CN CN201280053433.2A patent/CN104024517B/zh active Active
- 2012-11-01 MY MYPI2014700901A patent/MY167412A/en unknown
- 2012-11-01 WO PCT/JP2012/078358 patent/WO2013065794A1/ja not_active Ceased
- 2012-11-01 IN IN864KON2014 patent/IN2014KN00864A/en unknown
- 2012-11-01 JP JP2013541841A patent/JP5833666B2/ja active Active
- 2012-11-02 TW TW101140879A patent/TWI535903B/zh active
-
2015
- 2015-03-27 JP JP2015065884A patent/JP6012802B2/ja active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302568A (ja) * | 1995-03-09 | 1996-11-19 | Mitsui Petrochem Ind Ltd | 親水性不織布 |
| JPH1053955A (ja) * | 1996-08-02 | 1998-02-24 | Asahi Chem Ind Co Ltd | 親水性処理剤を付与したポリオレフィン系不織布 |
| JP2004076165A (ja) * | 2002-08-09 | 2004-03-11 | Toyobo Co Ltd | 衛生材料用繊維およびそれを用いた不織布 |
| JP2004156163A (ja) * | 2002-11-05 | 2004-06-03 | Asahi Kasei Fibers Corp | 親水性ポリオレフィン不織布 |
| JP2004250828A (ja) * | 2003-02-20 | 2004-09-09 | Asahi Kasei Fibers Corp | 使い捨て衛生材料用不織布およびその製造法 |
| JP2008038277A (ja) * | 2006-08-04 | 2008-02-21 | Asahi Kasei Fibers Corp | 衛生材料用ポリオレフィン系長繊維不織布 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015134979A (ja) * | 2011-11-02 | 2015-07-27 | 旭化成せんい株式会社 | 透水不織布 |
| JP2015132038A (ja) * | 2013-12-12 | 2015-07-23 | 花王株式会社 | 長繊維不織布 |
| JP2020073741A (ja) * | 2014-10-31 | 2020-05-14 | 松本油脂製薬株式会社 | 繊維処理剤、それが付着した透水性繊維および不織布の製造方法 |
| WO2016098796A1 (ja) * | 2014-12-17 | 2016-06-23 | 花王株式会社 | 液膜開裂剤 |
| JP2016117981A (ja) * | 2014-12-17 | 2016-06-30 | 花王株式会社 | 液膜開裂剤 |
| JP6051333B1 (ja) * | 2014-12-17 | 2016-12-27 | 花王株式会社 | 液膜開裂剤 |
| JP2022502575A (ja) * | 2018-08-17 | 2022-01-11 | オーアンドエム ハリヤード インコーポレイテッド | 個人用防護用物品の湿潤性sms素材 |
| JP7254162B2 (ja) | 2018-08-17 | 2023-04-07 | オーアンドエム ハリヤード インコーポレイテッド | 個人用防護用物品の湿潤性sms素材 |
| WO2020235207A1 (ja) * | 2019-05-20 | 2020-11-26 | 花王株式会社 | 吸収性物品包装体 |
Also Published As
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| MY167412A (en) | 2018-08-27 |
| JP6012802B2 (ja) | 2016-10-25 |
| TW201323676A (zh) | 2013-06-16 |
| CN104024517A (zh) | 2014-09-03 |
| TWI535903B (zh) | 2016-06-01 |
| JPWO2013065794A1 (ja) | 2015-04-02 |
| JP2015134979A (ja) | 2015-07-27 |
| JP5833666B2 (ja) | 2015-12-16 |
| CN104024517B (zh) | 2015-12-02 |
| IN2014KN00864A (ja) | 2015-10-02 |
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