CN106081343A - A kind of tasteless environmental protection potato chips packaging film preparation method - Google Patents

A kind of tasteless environmental protection potato chips packaging film preparation method Download PDF

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Publication number
CN106081343A
CN106081343A CN201610442454.3A CN201610442454A CN106081343A CN 106081343 A CN106081343 A CN 106081343A CN 201610442454 A CN201610442454 A CN 201610442454A CN 106081343 A CN106081343 A CN 106081343A
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packaging film
layer
environmental protection
bopp19
potato chips
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CN201610442454.3A
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CN106081343B (en
Inventor
李志明
李志勇
徐志恒
潘宣洲
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Guangdong baojiali New Material Co.,Ltd.
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Ningbo Jiangdong Jinghaozheng Mechanical Equipment Co Ltd
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • 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
    • 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
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling 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
    • B32B37/1284—Application of adhesive
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • 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
    • 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
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Wrappers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention belongs to packing film field, be specifically related to a kind of tasteless environmental protection potato chips packaging film preparation method.Packaging film structure of the present invention is: the anti-PE40 of BOPP19/PE12/PETG12/, the present invention selects extrusion composite dry composite algorithm to obtain multilayer packaging film, the use of adhesive can be reduced, use Aqueous Polyurethane Adhesives simultaneously, reduce the harm of organic solvent, reduce the discharge of VOC in production process, there is environment protecting.The present invention adds a certain proportion of metallocene PE in anti-PE40 hot sealing layer, has and reduces the pollution that food is brought by the abnormal smells from the patient of polyethylene own, can improve the intensity of hot sealing layer simultaneously and reduce heat-sealing temperature.

Description

A kind of tasteless environmental protection potato chips packaging film preparation method
Technical field
The present invention relates to packing film field, be specifically related to a kind of tasteless environmental protection potato chips packaging film preparation method.
Background technology
Along with the taste attention degree of food quality, particularly product is increased by people day by day, China is for food quality Requirement stricter, this also touches and makes food enterprise keep on improving the requirement of food packaging industry especially.The softest Packaging industry, owing to many times only taking into account combination in conventional formulation and copying the structure of like product, causes current product There is the most potential food quality hidden danger in product packaging.This brings the most potential just to packaging manufacturer and goods producer Risk.So the packaging exploitation being applicable to product special flavour is the task of top priority solving this problem.And the packaging material of environmental protection and low The packaging that the technological design of VOC emission is produced the most increasingly is favored by food enterprise and consumer.In recent years, stop Not busy food is increasingly becoming the new consumption favourite of many people, wherein potato chips with the delicious characteristic of its delicious and crisp in occupation of the of leisure food One armchair, prospect for sales is the most optimistic.Study a kind of potato chips bag membrane tasteless, environmental protection the most necessary.
Utility model CN203402500U discloses a kind of solvent-free MULTILAYER COMPOSITE food package film and packaging bag, described bag Dress film and packaging bag are sealed bottom by mylar top layer, mylar middle level and polyethylene film and pass sequentially through 100% Solid solventless type adhesive is bonding is a composite construction being monolithically fabricated.
Patent of invention CN104924716A disclose a kind of high temperature resistant decocting in water type multi-layer compound package bag combination process and Composite construction, is combined by water-soluble glue between pet layer and CMPET layer, passes through nothing between described VMPET layer and LDPE layer Solvent adhesive is combined.By using combination process and the composite construction of this high temperature resistant decocting in water type multi-layer compound package bag, it produces Cost is relatively low, and the feature of environmental protection is higher, and aesthetic property is higher, meets the requirement of high temperature resistant decocting in water simultaneously.
Above-mentioned patent is all to realize environmental protection, solvent-free problem by Compound Water soluble gum between thin film, solvent-free glue. The present invention is improved by structural adjustment and method, and proposition one is extruded compound-dry type composite algorithm and prepared tasteless environmental protection potato chips packaging The method of film.
Summary of the invention
Tasteless environmental protection potato chips packaging film prepared by the present invention, described packaging film structure is: BOPP19/PE12/PETG12/ prevents PE40, wherein, the thickness of numeric representation film layer, unit: micron, such as, BOPP19 represents that BOPP layer thickness is 19 microns.
The present invention provides a kind of method preparing tasteless environmental protection potato chips packaging film, it is characterised in that comprise the following steps:
1), the preparation of BOPP19/PE12/PETG12 composite membrane: by preparing BOPP layer, PE layer, the material of PETG layer put into respectively In 3 feed leakage buckets of co-extrusion machine, melt and extrude in same mould, form the composite membrane of BOPP/PE/PETG structure；
2), the preparation of anti-PE40 hot sealing layer: the material preparing anti-PE40 hot sealing layer is added in the feed leakage bucket of extruder, melt and squeeze Go out, form anti-PE40 hot sealing layer；
3), dry type is combined: be first to unreel base material by the composite membrane obtained in step 1), then makes first to unreel base material at 80N Tension under, after laterally correction, enter coating system to parallel flattening, applicator roll is by dandy roll in addition 0.30Mpa/cm2Pressure so that water-based polyurethane adhesive is uniformly transferred to the surface of the first PETG layer unreeling base material On, wherein, the spread of Aqueous Polyurethane Adhesives is 1.25g/m2；Second unreels the base material anti-PE40 tension at 35N Under parallel flattening, through doubling roller and composite steel roll with 0.45Mpa/cm2Pressure and first unreel base material MPET lamination obtain Obtain BOPP19/PE12/PETG12/ anti-PE40 composite membrane, through chill roll, rolling after cooling.In the process, oven temperature is 82 DEG C, it is 45 DEG C that doubling roller temperature controls.
4), ripening: anti-for BOPP19/PE12/PETG12/ PE40 is combined film roll and sends into aging machine ripening, curing temperature 45- 55 DEG C, curing time 40-70h;
5), printing: above-mentioned compound film roll is placed on the unwinding rack of printer, and pours deployed ink in ink fountain into, adjust Having saved unwinding and rewinding tension force, started printing, after 80 DEG C of-110 DEG C of high temperature are dried, rolling obtains printing volume.
6), check qualified, packaging warehouse-in.
One aspect, adds a certain amount of metallocene PE to improve its heat sealability in the present invention anti-PE40 hot sealing layer Can, reason be metallocene PE compared with conventional linear Low Density Polyethylene, narrow molecular weight distribution, molecular entanglement uniformity Good, heat seal strength is of a relatively high.Further, since the length of comonomer side chain is different, it is formed at tie molecule between crystal layer and tangles Ability is different, and selects the side chain of comonomer the longest, and heat seal strength is the biggest.Meanwhile, metallocene linear polyethylene and routine Polyethylene resin film is compared, and has the most odor profiles and transparency, selects to add metallocene linear polyethylene as hot sealing layer Ensure that the abnormal smells from the patient of product is unaffected.Described anti-PE40 hot sealing layer forms: linear low density polyethylene is 50-90wt%, cyclopentadienyl Metal polyethylene is 10-50wt%, oleamide is 0.02-0.05 wt%, and silicon dioxide is 0.02-0.05 wt%, antioxidation Agent is 0.01-0.03 wt%, and described component sum is 100%.Described antioxidant is antioxidant 168, antioxidant 1010, resists One in oxidant 1024 or two kinds.
Metallocene PE preferable weight-average molecular weight of the present invention distribution 2-4, octene content 10-20mol%, melt flows refers to Number (MFI) is 0.5-2g/10min, and test condition is the load of 2.16kg, the test temperature of 190 DEG C.Such as Tao Shi produces Elite 5100G、Elite 5110G。
Present invention aim at providing a kind of purposes, it includes using anti-for BOPP19/PE12/PETG12/ PE40 packaging film Preparation in tasteless environmental protection potato chips packaging bag.
The method have the advantages that
Containing BOPP, PETG film in packaging film structure of the present invention, it is possible to obtain good hot strength, impact strength and toughness, And the transparency is good, meanwhile, PETG itself is also a kind of well environment-friendly materials.
The present invention selects extrusion to be combined-dry type composite algorithm acquisition multilayer packaging film, it is possible to reduce the use of adhesive, simultaneously Use Aqueous Polyurethane Adhesives, reduce the harm of organic solvent, reduce the discharge of VOC in production process, there is environment protecting.
The present invention adds a certain proportion of metallocene PE in anti-PE40 hot sealing layer, has the minimizing gas of polyethylene own The pollution that food is brought by taste, can improve the intensity of hot sealing layer simultaneously and reduce heat-sealing temperature.
Detailed description of the invention
Embodiment 1
1), the preparation of BOPP19/PE12/PETG12 composite membrane: by preparing BOPP layer, PE layer, the material of PETG layer put into respectively In 3 feed leakage buckets of co-extrusion machine, melt and extrude in same mould, form the composite membrane of BOPP/PE/PETG structure；
2), the preparation of anti-PE40 hot sealing layer: the material preparing anti-PE40 hot sealing layer is added in the feed leakage bucket of extruder, melt and squeeze Go out, form anti-PE40 hot sealing layer；The material of described anti-PE40 hot sealing layer consists of: linear low density polyethylene is 50wt%, cyclopentadienyl gold Belonging to polyethylene Elite 5100G is 49wt%, oleamide is 0.04 wt%, and silicon dioxide is 0.05 wt%, antioxidant 168 It is 0.01 wt%；
3), dry type is combined: be first to unreel base material by the composite membrane obtained in step 1), then makes first to unreel base material at 80N Tension under, after laterally correction, enter coating system to parallel flattening, applicator roll is by dandy roll in addition 0.30Mpa/cm2Pressure so that water-based polyurethane adhesive is uniformly transferred to the surface of the first MPET layer unreeling base material On, wherein, the spread of Aqueous Polyurethane Adhesives is 1.25g/m2；Second unreels the base material anti-PE40 tension at 35N Under parallel flattening, through doubling roller and composite steel roll with 0.45Mpa/cm2Pressure and first unreel base material MPET lamination obtain Obtain BOPP19/PE12/PETG12/ anti-PE40 composite membrane, through chill roll, rolling after cooling.In the process, oven temperature is 82 DEG C, it is 45 DEG C that doubling roller temperature controls；
4), ripening: anti-for BOPP19/PE12/PETG12/ PE40 is combined film roll and sends into aging machine ripening, curing temperature 45 DEG C, ripe Change time 60h;
5), printing: above-mentioned compound film roll is placed on the unwinding rack of printer, and pours deployed ink in ink fountain into, adjust Having saved unwinding and rewinding tension force, started printing, after 110 DEG C of high temperature are dried, rolling obtains printing volume.
6), check qualified, packaging warehouse-in.
Embodiment 2
1), the preparation of BOPP19/PE12/PETG12 composite membrane: by preparing BOPP layer, PE layer, the material of PETG layer put into respectively In 3 feed leakage buckets of co-extrusion machine, melt and extrude in same mould, form the composite membrane of BOPP/PE/PETG structure；
2), the preparation of anti-PE40 hot sealing layer: the material preparing anti-PE40 hot sealing layer is added in the feed leakage bucket of extruder, melt and squeeze Go out, form anti-PE40 hot sealing layer；The material of described anti-PE40 hot sealing layer consists of: linear low density polyethylene is 60wt%, cyclopentadienyl gold Belonging to polyethylene Elite 5110G is 39wt%, oleamide is 0.03 wt%, and silicon dioxide is 0.04 wt%, antioxidant 168 It is 0.03 wt%；
3), dry type is combined: be first to unreel base material by the composite membrane obtained in step 1), then makes first to unreel base material at 80N Tension under, after laterally correction, enter coating system to parallel flattening, applicator roll is by dandy roll in addition 0.30Mpa/cm2Pressure so that water-based polyurethane adhesive is uniformly transferred to the surface of the first MPET layer unreeling base material On, wherein, the spread of Aqueous Polyurethane Adhesives is 1.25g/m2；Second unreels the base material anti-PE40 tension at 35N Under parallel flattening, through doubling roller and composite steel roll with 0.45Mpa/cm2Pressure and first unreel base material MPET lamination obtain Obtain BOPP19/PE12/PETG12/ anti-PE40 composite membrane, through chill roll, rolling after cooling.In the process, oven temperature is 82 DEG C, it is 45 DEG C that doubling roller temperature controls.
4), ripening: anti-for BOPP19/PE12/PETG12/ PE40 is combined film roll and sends into aging machine ripening, curing temperature 55 DEG C, curing time 50h;
5), printing: above-mentioned compound film roll is placed on the unwinding rack of printer, and pours deployed ink in ink fountain into, adjust Having saved unwinding and rewinding tension force, started printing, after 100 DEG C of high temperature are dried, rolling obtains printing volume.
6), check qualified, packaging warehouse-in.
Obtain packaging film by embodiment of the present invention 1-2 and meet China's composite membrane sanitary standard, normal hexane residue on evaporation < 30mg/L, meanwhile, heat-sealing temperature<130 DEG C, tearing intensity horizontal TD>40N/15mm, tearing intensity indulges MD>and 45N/15mm, packaging film Free from extraneous odour, foreign.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise Within protection scope of the present invention.

Claims (4)

1. a tasteless environmental protection potato chips packaging film preparation method, it is characterised in that comprise the following steps:
1), the preparation of BOPP19/PE12/PETG12 composite membrane: by preparing BOPP layer, PE layer, the material of PETG layer put into respectively In 3 feed leakage buckets of co-extrusion machine, melt and extrude in same mould, form the composite membrane of BOPP/PE/PETG structure；
2), the preparation of anti-PE40 hot sealing layer: the material preparing anti-PE40 hot sealing layer is added in the feed leakage bucket of extruder, melt and squeeze Go out, form anti-PE40 hot sealing layer；
3), dry type is combined: be first to unreel base material by the composite membrane obtained in step 1), then makes first to unreel base material at 80N Tension under, after laterally correction, enter coating system to parallel flattening, applicator roll is by dandy roll in addition 0.30Mpa/cm2Pressure so that water-based polyurethane adhesive is uniformly transferred to the surface of the first PETG layer unreeling base material On, wherein, the spread of Aqueous Polyurethane Adhesives is 1.25g/m2；Second unreels the base material anti-PE40 tension at 35N Under parallel flattening, through doubling roller and composite steel roll with 0.45Mpa/cm2Pressure and first unreel base material MPET lamination obtain Obtain BOPP19/PE12/PETG12/ anti-PE40 composite membrane, through chill roll, rolling after cooling.In the process, oven temperature is 82 DEG C, it is 45 DEG C that doubling roller temperature controls；
4), ripening: anti-for BOPP19/PE12/PETG12/ PE40 is combined film roll and sends into aging machine ripening, curing temperature 45-55 DEG C, curing time 40-70h;
5), printing: above-mentioned compound film roll is placed on the unwinding rack of printer, and pours deployed ink in ink fountain into, adjust Having saved unwinding and rewinding tension force, started printing, after 80 DEG C of-110 DEG C of high temperature are dried, rolling obtains printing volume；
6), check qualified, packaging warehouse-in.
Described packaging film structure is: the anti-PE40 of BOPP19/PE12/PETG12/, wherein, the thickness of numeric representation film layer, unit: Micron, such as, BOPP19 represents that BOPP layer thickness is 19 microns.
The most tasteless environmental protection potato chips packaging film preparation method, it is characterised in that: described anti-PE40 hot sealing layer Composition: linear low density polyethylene is 50-90wt%, and metallocene PE is 10-50wt%, oleamide is 0.02-0.05 Wt%, silicon dioxide is 0.02-0.05 wt%, and antioxidant is 0.01-0.03 wt%, and described component sum is 100%；Described anti- Oxygen agent is the one in antioxidant 168, antioxidant 1010, antioxidant 1024 or two kinds.
The most tasteless environmental protection potato chips packaging film preparation method, it is characterised in that: metallocene PE is preferred Weight average molecular weight distribution 2-4, octene content 10-20mol%, melt flow index (MFI) is 0.5-2g/10min, test condition For load, the test temperature of 190 DEG C of 2.16kg, such as Elite 5100G, the Elite 5110G that Tao Shi produces.
4. a purposes, it includes packaging film prepared by claim 1-3 either method is used for tasteless environmental protection potato chips packaging bag Preparation.
CN201610442454.3A 2016-06-20 2016-06-20 A kind of tasteless environmentally friendly potato chips packaging membrane preparation method Active CN106081343B (en)

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CN111021086A (en) * 2019-12-06 2020-04-17 广东宝佳利绿印股份有限公司 Environment-friendly inflatable puffed food packaging film
CN113071175A (en) * 2021-04-13 2021-07-06 永新股份（黄山）包装有限公司 Water-based coated composite environment-friendly packaging material and preparation process thereof
CN113830425A (en) * 2021-06-29 2021-12-24 安姆科(惠州)新材料科技有限公司 Small-capacity liquid self-supporting bag with nozzle and preparation method thereof

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CN111021086A (en) * 2019-12-06 2020-04-17 广东宝佳利绿印股份有限公司 Environment-friendly inflatable puffed food packaging film
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CN113071175A (en) * 2021-04-13 2021-07-06 永新股份（黄山）包装有限公司 Water-based coated composite environment-friendly packaging material and preparation process thereof
CN113830425A (en) * 2021-06-29 2021-12-24 安姆科(惠州)新材料科技有限公司 Small-capacity liquid self-supporting bag with nozzle and preparation method thereof
CN113830425B (en) * 2021-06-29 2023-08-04 安姆科(惠州)新材料科技有限公司 Small-capacity spouted liquid self-standing bag and preparation method thereof

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