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CN114161801A - A composite packaging material with excellent oxygen and moisture permeability and preparation method thereof - Google Patents

A composite packaging material with excellent oxygen and moisture permeability and preparation method thereof Download PDF

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Publication number
CN114161801A
CN114161801A CN202111531991.2A CN202111531991A CN114161801A CN 114161801 A CN114161801 A CN 114161801A CN 202111531991 A CN202111531991 A CN 202111531991A CN 114161801 A CN114161801 A CN 114161801A
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China
Prior art keywords
layer
moisture permeability
packaging material
composite packaging
parts
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Pending
Application number
CN202111531991.2A
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Chinese (zh)
Inventor
周隆裕
卞松锋
洪米
毛建国
王海波
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Suzhou Hongchang Packaging Material Co ltd
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Suzhou Hongchang Packaging Material Co ltd
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Priority to CN202111531991.2A priority Critical patent/CN114161801A/en
Publication of CN114161801A publication Critical patent/CN114161801A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C09D127/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/08—Copolymers of ethene
    • C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853—Vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

The invention belongs to the field of composite materials for packaging bags, and particularly discloses a composite packaging material with excellent oxygen and moisture permeability and a preparation method thereof, wherein the lower part and the upper part comprise a base layer 1, a first bonding layer 2, a heat sealing layer 3, a second bonding layer 4 and a printing layer 5, and the base layer 1 is made of the following raw materials in parts by weight; 100 parts of polylactic acid, 40-80 parts of starch-based plastic, 20-50 parts of maleic anhydride grafted polypropylene, 10-30 parts of polyvinyl cyclohexane-polycaprolactone, 5-10 parts of polyvinyl alcohol-polystyrene and 2-8 parts of polyoxyethylene lauryl alcohol ether; compared with the prior art, the composite packaging material disclosed by the invention has the following beneficial technical effects: according to the invention, the pore diameter of the whole material is adjusted on a molecular scale by optimizing the structure and material ratio of the composite material, so that oxygen molecules and water molecules can pass through the composite material easily, the mechanical property of the material is not influenced, and the material can be widely applied to various severe packaging scenes needing oxygen permeation and moisture permeation.

Description

Composite packaging material with excellent oxygen and moisture permeability and preparation method thereof
Technical Field
The invention belongs to the field of composite materials for packaging bags, and particularly discloses a composite packaging material with excellent oxygen and moisture permeability and a preparation method thereof.
Background
The packaging material is used for manufacturing packaging containers, packaging decoration, packaging printing, packaging transportation and the like, meets the requirements of product packaging, and comprises main packaging materials such as metal, plastic, glass, ceramics, paper, bamboo, wild mushrooms, natural fibers, chemical fibers, composite materials and the like, and auxiliary materials such as strapping, decoration, printing materials and the like.
On the basis of the development of packaging industry, the packaging of articles is correspondingly developed, the packaging is developed from simple paper packaging to single-layer plastic film packaging, the composite film is widely used, the composite film can enable the contents in the packaging to have the characteristics of moisture preservation, fragrance preservation, beauty, freshness preservation, light protection, permeation prevention, shelf life prolonging and the like, so that the composite material is rapidly developed, the composite material is formed by combining two or more materials through one-time or multiple-time composite processes, and the composite material with certain functions can be generally divided into a base layer, a functional layer and a heat sealing layer, wherein some base layers mainly have the functions of beauty, printing, moisture resistance and the like, such as BOPP, BOPET, BOPA, MT, KOP, KPET and the like, some base layer functional layers mainly have the functions of permeation prevention, light protection and the like, such as VMPET, AL, EVOH, PVDC and the like, the heat sealing layer is directly contacted with the packaged articles, and some base layers have the functions of adaptability, permeation resistance, moisture resistance and the like, Good heat sealing performance, transparency, and opening date performance, such as LDPE, LLDPE, MLLDPE, CPP, VMCPP, EVA, EAA, E-MAA, EMA, and EBA.
At present, common packaging materials comprise air-permeable waterproof packages and sealed air-impermeable and water-impermeable packages, but in some special application scenes, composite material packages which have certain sealing property and air and moisture permeability are required, and composite packaging materials with oxygen permeability and moisture permeability are not disclosed in the market at present.
Disclosure of Invention
Aiming at the defects, the invention discloses a composite packaging material with excellent oxygen and moisture permeability and a preparation method thereof, and the composite packaging material has good water and oxygen permeability and high mechanical strength.
The technical scheme of the invention is as follows:
a composite packaging material with excellent oxygen permeation and moisture permeability comprises a base layer, a first adhesive layer, a heat sealing layer, a second adhesive layer and a printing layer from bottom to top, wherein the base layer is made of the following raw materials in parts by weight:
Figure BDA0003411126590000021
the preparation method of the base layer comprises the following steps:
adding the polylactic acid, the starch-based plastic and the maleic anhydride grafted polypropylene into a mixing device according to the formula ratio, and stirring and mixing at the temperature of 40-60 ℃ and the speed of 200-300 r/min for 20-40 min to obtain a stirring reaction mixture; then adding the polyvinyl cyclohexane-polycaprolactone, the polyvinyl alcohol-polystyrene and the polyoxyethylene lauryl alcohol ether according to the formula ratio, and mixing for 2-3 hours at the temperature of 70-90 ℃; and adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the base layer.
Further, the composite packaging material with excellent oxygen and moisture permeability is characterized in that the first adhesive layer and the second adhesive layer are respectively made of the following raw materials in parts by weight:
Figure BDA0003411126590000022
the preparation method of the material of the first adhesive layer comprises the following steps:
adding the polyethylene-vinyl acetate copolymer, the polypropylene carbonate, the diphenylmethane diisocyanate and the polyethylene glycol into a mixing device according to the formula ratio, vacuumizing to be less than 0.01Mpa, and stirring and mixing at the temperature of 80-100 ℃ and the speed of 200-300 revolutions per minute for 60-100 minutes to obtain the materials of the first bonding layer and the second bonding layer.
Further, the composite packaging material with excellent oxygen and moisture permeability is characterized in that the heat-sealing layer is made of the following raw materials in parts by weight:
Figure BDA0003411126590000023
the heat sealing layer is prepared by the following steps:
adding metallocene polyethylene and low-density polyethylene in a formula amount into a mixing device, and stirring and mixing at the temperature of 55-75 ℃ at the speed of 400-600 r/min for 10-20 min to obtain a stirring reaction mixture; then adding ethylene-ethyl acrylate and polypropylene carbonate according to the formula ratio, and mixing for 1-2 hours at the temperature of 120-140 ℃; and adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the heat sealing layer.
Further, the composite packaging material with excellent oxygen and moisture permeability is characterized in that the printing layer is provided with a glass fiber substrate, and a wear-resistant layer is coated on the glass fiber substrate.
Further, the composite packaging material with excellent oxygen and moisture permeability is characterized in that the wear-resistant layer is made of the following raw materials in parts by weight:
Figure BDA0003411126590000031
the preparation method of the wear-resistant layer comprises the following steps: adding PVC resin powder, a titanate coupling agent, chlorinated polyethylene and sodium bicarbonate into a mixing device according to the formula ratio, stirring and mixing at the temperature of 150-200 ℃ at the speed of 200-300 r/min for 20-40 min, introducing saturated argon gas during the stirring and mixing to obtain the material of the wear-resistant layer, and uniformly spraying the material on the glass fiber substrate of the printing layer to obtain the wear-resistant layer.
Further, the preparation method of the composite packaging material with excellent oxygen and moisture permeability comprises the following steps: after the base layer, the heat sealing layer and the printing layer are respectively prepared, coating a first bonding layer between the base layer and the heat sealing layer; coating a first adhesive layer between the heat-sealing layer and the printing layer; putting the mixture into a hot press for hot press molding.
Further, the preparation method of the composite packaging material with excellent oxygen and moisture permeability comprises the following steps: heat sealing layer: the thickness ratio of the printing layer was 3:2: 1.
Furthermore, the composite packaging material with excellent oxygen and moisture permeability is applied to an oxygen and moisture permeable scene.
According to the technical scheme, the composite packaging material with excellent oxygen and moisture permeability and the preparation method thereof disclosed by the invention have the following beneficial effects that:
according to the invention, the structure and material ratio of the composite material are optimized, and the pore diameter of the whole material is adjusted on a molecular scale, so that oxygen molecules can pass through the composite material easily, and the mechanical property of the material is not influenced.
Drawings
FIG. 1 is a schematic structural view of a composite packaging material with excellent oxygen and moisture permeability according to the present invention;
wherein: the base layer 1, the first adhesive layer 2, the heat seal layer 3, the second adhesive layer 4, the printing layer 5 and the wear-resistant layer 51.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in the attached figure 1, the composite packaging material with excellent oxygen and moisture permeability comprises a base layer 1, a first adhesive layer 2, a heat sealing layer 3, a second adhesive layer 4 and a printing layer 5 from bottom to top, wherein the base layer 1 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000041
the preparation method of the base layer 1 comprises the following steps:
adding the polylactic acid, the starch-based plastic and the maleic anhydride grafted polypropylene into a mixing device according to the formula ratio, and stirring and mixing at the temperature of 40 ℃ and the speed of 200 revolutions per minute for 20 minutes to obtain a stirring reaction mixture; then adding the polyvinyl cyclohexane-polycaprolactone, the polyvinyl alcohol-polystyrene and the polyoxyethylene lauryl alcohol ether according to the formula ratio, and mixing for 2 hours at the temperature of 70 ℃; adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the base layer;
the materials of the first adhesive layer 2 and the second adhesive layer 4 are respectively prepared from the following raw materials in parts by weight:
Figure BDA0003411126590000042
the preparation method of the material of the first adhesive layer 2 comprises the following steps:
adding the polyethylene-vinyl acetate copolymer, the polypropylene carbonate, the diphenylmethane diisocyanate and the polyethylene glycol into a mixing device according to the formula ratio, vacuumizing to be less than 0.01Mpa, and stirring and mixing at the temperature of 80-DEG C and at the speed of 200 revolutions per minute for 60 minutes to obtain materials of a first bonding layer 2 and a second bonding layer 4;
the heat sealing layer 3 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000051
the heat-sealing layer 3 is prepared by the following steps:
adding metallocene polyethylene and low-density polyethylene in a formula amount into a mixing device, and stirring and mixing at the temperature of 55 ℃ and the speed of 400 r/min for 10 minutes to obtain a stirring reaction mixture; then adding ethylene-ethyl acrylate and polypropylene carbonate according to the formula ratio, and mixing for 1 hour at the temperature of 120 ℃; adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the heat sealing layer 3;
the printing layer 5 is provided with a glass fiber substrate, and a wear-resistant layer 51 is coated on the glass fiber substrate;
the wear-resistant layer 51 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000052
the preparation method of the wear-resistant layer 51 comprises the following steps: adding PVC resin powder, a titanate coupling agent, chlorinated polyethylene and sodium bicarbonate into a mixing device according to the formula ratio, stirring and mixing at the temperature of 150 ℃ for 20 minutes at the speed of 200 revolutions per minute, introducing saturated argon gas during the stirring and mixing to obtain a material of the wear-resistant layer 51, and uniformly spraying the material on a glass fiber substrate of the printing layer 5 to obtain the wear-resistant layer 51;
the preparation method of the composite packaging material with excellent oxygen and moisture permeability comprises the following steps: after the base layer 1, the heat sealing layer 3 and the printing layer 5 are respectively prepared, a first bonding layer 2 is coated between the base layer 1 and the heat sealing layer 3; coating a first adhesive layer 4 between the heat sealing layer 3 and the printing layer 5; putting the mixture into a hot press for hot press molding;
the base layer 1: heat-seal layer 3: the thickness ratio of the printing layer 5 was 1:1: 1.
Example 2
As shown in the attached figure 1, the composite packaging material with excellent oxygen and moisture permeability comprises a base layer 1, a first adhesive layer 2, a heat sealing layer 3, a second adhesive layer 4 and a printing layer 5 from bottom to top, wherein the base layer 1 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000061
the preparation method of the base layer 1 comprises the following steps:
adding the polylactic acid, the starch-based plastic and the maleic anhydride grafted polypropylene into a mixing device according to the formula ratio, and stirring and mixing at the temperature of 50 ℃ and the speed of 250 revolutions per minute for 30 minutes to obtain a stirring reaction mixture; then adding the polyvinyl cyclohexane-polycaprolactone, the polyvinyl alcohol-polystyrene and the polyoxyethylene lauryl alcohol ether according to the formula ratio, and mixing for 2.5 hours at the temperature of 80 ℃; adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the base layer;
the materials of the first adhesive layer 2 and the second adhesive layer 4 are respectively prepared from the following raw materials in parts by weight:
Figure BDA0003411126590000062
the preparation method of the material of the first adhesive layer 2 comprises the following steps:
adding the polyethylene-vinyl acetate copolymer, the polypropylene carbonate, the diphenylmethane diisocyanate and the polyethylene glycol into a mixing device according to the formula ratio, vacuumizing the device to a degree of less than 0.01Mpa, and stirring and mixing the materials at a temperature of 90 ℃ and a speed of 250 revolutions per minute for 80 minutes to obtain materials of a first bonding layer 2 and a second bonding layer 4;
the heat sealing layer 3 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000063
Figure BDA0003411126590000071
the heat-sealing layer 3 is prepared by the following steps:
adding metallocene polyethylene and low-density polyethylene in a formula amount into a mixing device, and stirring and mixing at the temperature of 65 ℃ at the speed of 500 revolutions per minute for 15 minutes to obtain a stirring reaction mixture; then adding ethylene-ethyl acrylate and polypropylene carbonate according to the formula ratio, and mixing for 1.5 hours at the temperature of 130 ℃; adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the heat sealing layer 3;
the printing layer 5 is provided with a glass fiber substrate, and a wear-resistant layer 51 is coated on the glass fiber substrate;
the wear-resistant layer 51 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000072
the preparation method of the wear-resistant layer 51 comprises the following steps: adding PVC resin powder, a titanate coupling agent, chlorinated polyethylene and sodium bicarbonate into a mixing device according to the formula ratio, stirring and mixing at the temperature of 175 ℃ at the speed of 250 revolutions per minute for 30 minutes, introducing saturated argon gas during the stirring and mixing to obtain a material of the wear-resistant layer 51, and uniformly spraying the material on a glass fiber substrate of the printing layer 5 to obtain the wear-resistant layer 51;
the preparation method of the composite packaging material with excellent oxygen and moisture permeability comprises the following steps: after the base layer 1, the heat sealing layer 3 and the printing layer 5 are respectively prepared, a first bonding layer 2 is coated between the base layer 1 and the heat sealing layer 3; coating a first adhesive layer 4 between the heat sealing layer 3 and the printing layer 5; putting the mixture into a hot press for hot press molding;
the base layer 1: heat-seal layer 3: the thickness ratio of the printing layer 5 was 3:2: 1.
Example 3
As shown in the attached figure 1, the composite packaging material with excellent oxygen and moisture permeability comprises a base layer 1, a first adhesive layer 2, a heat sealing layer 3, a second adhesive layer 4 and a printing layer 5 from bottom to top, wherein the base layer 1 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000073
Figure BDA0003411126590000081
the preparation method of the base layer 1 comprises the following steps:
adding the polylactic acid, the starch-based plastic and the maleic anhydride grafted polypropylene into a mixing device according to the formula ratio, and stirring and mixing at the temperature of 60 ℃ at the speed of 300 revolutions per minute for 40 minutes to obtain a stirring reaction mixture; then adding the polyvinyl cyclohexane-polycaprolactone, the polyvinyl alcohol-polystyrene and the polyoxyethylene lauryl alcohol ether according to the formula ratio, and mixing for 3 hours at the temperature of 90 ℃; adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the base layer;
the materials of the first adhesive layer 2 and the second adhesive layer 4 are respectively prepared from the following raw materials in parts by weight:
Figure BDA0003411126590000082
the preparation method of the material of the first adhesive layer 2 comprises the following steps:
adding the polyethylene-vinyl acetate copolymer, the polypropylene carbonate, the diphenylmethane diisocyanate and the polyethylene glycol into a mixing device according to the formula ratio, vacuumizing the device to a degree of less than 0.01Mpa, and stirring and mixing the materials at a temperature of 100 ℃ and a speed of 300 revolutions per minute for 100 minutes to obtain materials of a first bonding layer 2 and a second bonding layer 4;
the heat sealing layer 3 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000083
the heat-sealing layer 3 is prepared by the following steps:
adding metallocene polyethylene and low-density polyethylene in a formula amount into a mixing device, and stirring and mixing at the temperature of 75 ℃ at the speed of 600 revolutions per minute for 20 minutes to obtain a stirring reaction mixture; then adding ethylene-ethyl acrylate and polypropylene carbonate according to the formula ratio, and mixing for 2 hours at the temperature of 140 ℃; adding the mixed product into a double-screw extruder for melt blending and granulation, and then carrying out hot press molding on the granules through a hot press to obtain the heat sealing layer 3;
the printing layer 5 is provided with a glass fiber substrate, and a wear-resistant layer 51 is coated on the glass fiber substrate;
the wear-resistant layer 51 is made of the following raw materials in parts by weight:
Figure BDA0003411126590000091
the preparation method of the wear-resistant layer 51 comprises the following steps: adding PVC resin powder, a titanate coupling agent, chlorinated polyethylene and sodium bicarbonate into a mixing device according to the formula amount, stirring and mixing at the temperature of 200 ℃ at the speed of 300 r/min for 40 min, introducing saturated argon gas during the stirring and mixing to obtain a material of the wear-resistant layer 51, and uniformly spraying the material on a glass fiber substrate of the printing layer 5 to obtain the wear-resistant layer 51;
the preparation method of the composite packaging material with excellent oxygen and moisture permeability comprises the following steps: after the base layer 1, the heat sealing layer 3 and the printing layer 5 are respectively prepared, a first bonding layer 2 is coated between the base layer 1 and the heat sealing layer 3; coating a first adhesive layer 4 between the heat sealing layer 3 and the printing layer 5; putting the mixture into a hot press for hot press molding;
the base layer 1: heat-seal layer 3: the thickness ratio of the printing layer 5 was 3:2: 1.
Example 4
The composite packaging materials prepared in examples 1 to 3 were heat-sealed into packaging bags. The heat sealing process comprises the following steps: superposing the two layers of composite packaging materials, carrying out ultrasonic treatment, and carrying out hot pressing and heat sealing by using a hot knife and slitting; the ultrasonic treatment process comprises the following steps: the ultrasonic transducer carries out ultrasonic treatment on a heat sealing area clamped between the ironing knife and the base; the pressure of the hot knife on the composite packaging material during ultrasonic treatment is 0.5Mpa, the ultrasonic time is 4s, the frequency of the ultrasonic wave is 35kHz, and the temperature of the hot knife is not higher than the softening point temperature of the composite packaging material. .
The packages prepared above were compared with comparative examples (commercially available ordinary packaging bags) and the results are shown in table 1 below:
TABLE 1 test of the performance of the packaging bags
Tensile breaking force N/15mm Heat seal Strength N/50mm Oxygen permeability Moisture permeability
Example 1 124 107 Is excellent in Is excellent in
Example 2 127 109 Is excellent in Is excellent in
Example 3 118 108 Is excellent in Is excellent in
Comparative example 121 109 Impermeable to oxygen Moisture-impermeable
As shown in the table above, the composite packaging material prepared by the invention has good tear resistance and sealing performance, the breaking strength of the composite packaging material reaches 118N/15mm, and the heat sealing strength of the composite packaging material reaches 107N/50 mm; on the basis of keeping excellent mechanical properties, the packaging film also has good oxygen and moisture permeability, can be widely applied to packaging scenes needing the oxygen and moisture permeability, and is worthy of great popularization.
The above are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and all the equivalent changes and modifications made by the claims and the summary of the invention should be covered by the protection scope of the present patent application.

Claims (8)

1.一种透氧透湿性能优良的复合包装材料,其特征在于，由下而上包括基层(1)、第一粘合层(2)、热封层(3)、第二粘合层(4)、以及印刷层(5)组成，所述基层(1)的材料由以下重量份的原料制成：1. A composite packaging material with excellent oxygen and moisture permeability, characterized in that, from bottom to top, it comprises a base layer (1), a first adhesive layer (2), a heat-sealing layer (3), a second adhesive layer (4), and the printing layer (5) are formed, and the material of the base layer (1) is made of the following raw materials by weight:
Figure FDA0003411126580000011
Figure FDA0003411126580000011
 所述基层(1)的制备方法包括以下步骤：The preparation method of the base layer (1) comprises the following steps: 将配方量的聚乳酸、淀粉基塑料、马来酸酐接枝聚丙烯加入到混料装置中，在40-60℃的温度下以200-300转/分钟的速度搅拌混合20-40分钟，得到搅拌反应混合物；再加入配方量的聚乙烯基环己烷-聚已内酯、聚乙烯醇-聚苯乙烯、聚氧乙烯月桂醇醚，在70-90℃的温度下混炼2-3小时；将混炼产物加入到双螺杆挤出机中进行熔融共混、造粒，再将颗粒料通过热压机热压成型得到所述基层。The formula amount of polylactic acid, starch-based plastic, and maleic anhydride grafted polypropylene is added to the mixing device, and at a temperature of 40-60 ° C, stirring and mixing at a speed of 200-300 rpm for 20-40 minutes to obtain Stir the reaction mixture; then add the formula amount of polyvinylcyclohexane-polycaprolactone, polyvinyl alcohol-polystyrene, polyoxyethylene lauryl ether, and mix for 2-3 hours at a temperature of 70-90 ° C ; The kneaded product is added to a twin-screw extruder for melt blending and granulation, and then the pellets are hot-pressed by a hot-press machine to obtain the base layer. 2.根据权利要求1所述的一种透氧透湿性能优良的复合包装材料，其特征在于，所述第一粘合层(2)和所述第二粘合层(4)的材料均由以下重量份的原料制成：2 . The composite packaging material with excellent oxygen and moisture permeability according to claim 1 , wherein the materials of the first adhesive layer ( 2 ) and the second adhesive layer ( 4 ) are both 2. 3 . It is made from the following raw materials by weight:
Figure FDA0003411126580000012
Figure FDA0003411126580000012
 所述第一粘合层(2)的材料的制备方法包括以下步骤：The preparation method of the material of the first adhesive layer (2) comprises the following steps: 将配方量的聚乙烯-醋酸乙烯共聚物、聚碳酸亚丙酯、二苯基甲烷二异氰酸酯和聚乙二醇加入到混料装置中，抽真空度小于0.01Mpa,在80-100℃的温度下以200-300转/分钟的速度搅拌混合60-100分钟，得到第一粘合层(2)和第二粘合层(4)的材料。Add the polyethylene-vinyl acetate copolymer, polypropylene carbonate, diphenylmethane diisocyanate and polyethylene glycol of the formula amount into the mixing device, the vacuum degree is less than 0.01Mpa, and the temperature is 80-100 ° C. The materials of the first adhesive layer (2) and the second adhesive layer (4) are obtained by stirring and mixing at a speed of 200-300 rpm for 60-100 minutes. 3.根据权利要求1所述的一种透氧透湿性能优良的复合包装材料,其特征在于，所述热封层(3)的材料由以下重量份的原料制成：3. a kind of composite packaging material with excellent oxygen and moisture permeability according to claim 1, is characterized in that, the material of described heat-sealing layer (3) is made of the following raw materials by weight:
Figure FDA0003411126580000021
Figure FDA0003411126580000021
 上述热封层(3)由以下步骤制成：The above-mentioned heat-sealing layer (3) is made by the following steps: 将配方量的茂金属聚乙烯、低密度聚乙烯加入到混料装置中，在55-75℃的温度下以400-600转/分钟的速度搅拌混合10-20分钟，得到搅拌反应混合物；再加入配方量的乙烯－丙烯酸乙酯、聚碳酸亚丙酯，在120-140℃的温度下混炼1-2小时；将混炼产物加入到双螺杆挤出机中进行熔融共混、造粒，再将颗粒料通过热压机热压成型得到所述热封层(3)。Add the metallocene polyethylene and low-density polyethylene of the formula amount into the mixing device, and stir and mix at a speed of 400-600 rpm for 10-20 minutes at a temperature of 55-75 ° C to obtain a stirring reaction mixture; Add the formula amount of ethylene-ethyl acrylate and polypropylene carbonate, and mix at a temperature of 120-140 ° C for 1-2 hours; add the mixed product to a twin-screw extruder for melt blending and granulation , and then the pellets are hot-pressed by a hot-press machine to obtain the heat-sealing layer (3). 4.根据权利要求1所述的一种透氧透湿性能优良的复合包装材料,其特征在于，所述印刷层(5)具有玻璃纤维基板，其上还涂覆有耐磨层(51)。4. The composite packaging material with excellent oxygen and moisture permeability according to claim 1, wherein the printed layer (5) has a glass fiber substrate, and is also coated with a wear-resistant layer (51) . 5.根据权利要求4所述的一种透氧透湿性能优良的复合包装材料,所述耐磨层(51)的材料由以下重量份的原料制成：5. The composite packaging material with excellent oxygen and moisture permeability according to claim 4, wherein the material of the wear-resistant layer (51) is made of the following raw materials by weight:
Figure FDA0003411126580000022
Figure FDA0003411126580000022
 所述耐磨层(51)的制备方法包括以下步骤：将配方量的pvc树脂粉、钛酸酯偶联剂、氯化聚乙烯和碳酸氢钠加入到混料装置中,在150-200℃的温度下以200-300转/分钟的速度搅拌混合20-40分钟，期间通入饱和氩气，得到所述耐磨层(51)的材料，将上述材料均匀喷涂在所述印刷层(5)具有玻璃纤维基板上，得到所述耐磨层(51)。The preparation method of the wear-resistant layer (51) includes the following steps: adding a formula amount of pvc resin powder, a titanate coupling agent, chlorinated polyethylene and sodium bicarbonate into a mixing device, and the temperature is 150-200° C. At a temperature of 200-300 r/min, stirring and mixing for 20-40 minutes, during which saturated argon gas was introduced to obtain the material of the wear-resistant layer (51), and the above-mentioned material was uniformly sprayed on the printing layer (5). ) on a glass fiber substrate to obtain the wear-resistant layer (51). 6.如权利要求1-5任一项所述的透氧透湿性能优良的复合包装材料的制备方法，包括以下步骤：将基层(1)、热封层(3)、印刷层(5)分别制备完成后，在基层(1)和热封层(3)之间涂覆第一粘合层(2)；在热封层(3)和印刷层(5)之间涂覆第一粘合层(4)；放入热压机热压成型。6. The preparation method of the composite packaging material with excellent oxygen and moisture permeability as claimed in any one of claims 1-5, comprising the steps of: combining the base layer (1), the heat sealing layer (3), the printing layer (5) After the preparation is completed respectively, a first adhesive layer (2) is applied between the base layer (1) and the heat-sealing layer (3); a first adhesive layer (2) is applied between the heat-sealing layer (3) and the printing layer (5). Laminate (4); put into a hot press for hot pressing molding. 7.根据权利要求1-5任一项所述的透氧透湿性能优良的复合包装材料，所述基层(1)：热封层(3)：印刷层(5)的厚度比为3:2:1。7. the excellent composite packaging material of oxygen and moisture permeability according to any one of claims 1-5, the base layer (1): heat sealing layer (3): the thickness ratio of the printing layer (5) is 3: 2:1. 8.如权利要求1-5任一项所述的透氧透湿性能优良的复合包装材料在透氧透湿场景下的应用。8. The application of the composite packaging material with excellent oxygen and moisture permeability according to any one of claims 1 to 5 in the scene of oxygen and moisture permeability.
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