CN107718827A - A kind of seven-layer co-extrusion film and its production technology - Google Patents

A kind of seven-layer co-extrusion film and its production technology Download PDF

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Publication number
CN107718827A
CN107718827A CN201710952498.5A CN201710952498A CN107718827A CN 107718827 A CN107718827 A CN 107718827A CN 201710952498 A CN201710952498 A CN 201710952498A CN 107718827 A CN107718827 A CN 107718827A
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temperature control
layer
fuselage
polyethylene
polypropylene
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沈兆宇
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Jiashan Hengyu Plastic Co Ltd
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Jiashan Hengyu Plastic Co Ltd
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    • 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
    • B32B27/18—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
    • 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
    • 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
    • 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
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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

Abstract

The present invention provides a kind of seven-layer co-extrusion film, including the first polyethylene layer, the second polyethylene layer, the first polypropylene layer, the 3rd polyethylene layer, the second polypropylene layer, the 4th polyethylene layer and the 5th polyethylene layer being in contact successively, with good tear-proof and tensile strength, ageing resistace and anti-wear performance are improved, and have good market prospects.Simultaneously present invention also offers the production technology of the seven-layer co-extrusion film, using different-diameter screw rod and different zones temperature regulation, come produce relative to film layer, production process is simple, and cost of material is relatively low, and input and output are higher.

Description

A kind of seven-layer co-extrusion film and its production technology
Technical field
The present invention relates to plastic sheeting field, and in particular to a kind of seven-layer co-extrusion film and its production technology.
Background technology
Plastic sheeting is usually used in packing, and suitable for every field such as food, medicine, agricultural, industry and space flight and aviation, leads to It is made frequently with polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, plastics package and plastic packet product Commercially shared share is increasing, particularly composite plastic flexible package, has been widely used for food, medicine, change The fields such as work, wherein it is again maximum with packaging for foodstuff proportion, for example beverage packaging, quick-frozen food are packed, cooking food is packed, Fast food packaging etc., these products are all brought great convenience to people's life, and Plastics in China product industry is also at soon Fast developing stage, 2010 ~ 2011 be the plastic sheeting peak of investment phase, and production capacity acquisition time, and film overall productivity is kept for two Several growth rate, high-end work uh scale are also progressively domesticizing, the field such as capactive film, lithium ion battery separator, optical film Also begin to fast development.
Film species has monofilm, composite membrane and a co-extrusion film, the mechanical strength and case hardness of single thin film be relatively low, The shortcomings of inflammable and poor heat resistance, limits its use range, and co-extrusion film market is more wide, wherein, multi-layer co-extruded technology is just It is that raw material is directly used as using more than 3 kinds of plastic pellet (or plastic powders), makes every kind of modeling respectively by several extruders After expecting fusion plastification, into same mouth mold (or by distributor, supplied after the plastics that each extruder is supplied are converged Enter mouth mold), then by being processed further handling, multi-layer compound film is made.
Wherein, co-extrusion film can be used as winding film effect, and existing winding film is easily torn in use, while is made Easy aging, breakage, influence using effect, it is difficult to meet demand during.
The content of the invention
（One）Technical problems to be solved
The problem to be solved in the present invention is that existing film strength is low, easy to aging, tear, and service life is shorter.
（Two）Technical scheme
To solve the technical problem, the present invention provides a kind of seven-layer co-extrusion film, including the first polyethylene being in contact successively Layer, the second polyethylene layer, the first polypropylene layer, the 3rd polyethylene layer, the second polypropylene layer, the 4th polyethylene layer and the 5th are poly- Pvdf layer；First polyethylene layer is 80 ~ 90% polyethylene, 1 ~ 5% acrylic resin, 1 ~ 3% polyoxygenated third by mass percent The double octadecyl esters of enediol, 1 ~ 5% garlic oil, 1 ~ 10% ekonol, 0.1 ~ 1% thio-2 acid are formed；Described second Polyethylene layer is that 90 ~ 95% polyethylene and 5 ~ 10% polyolefin elastomers are formed by mass percent；First polypropylene layer It is that 80 ~ 90% polypropylene, 5 ~ 10% glass fibres, 5 ~ 10% polyimides are formed by mass percent；3rd polyethylene layer by Mass percent is that 90 ~ 95% LLDPEs and 5 ~ 10% polyolefin elastomers are formed；Second polypropylene layer It is that 80 ~ 90% polypropylene, 5 ~ 10% glass fibres, 5 ~ 10% polyimides are formed by mass percent；4th polyethylene layer by Mass percent is that 90 ~ 95% polyethylene and 5 ~ 10% polyolefin elastomers are formed；5th polyethylene layer is by quality percentage Than for 80 ~ 90% polyethylene, 1 ~ 5% acrylic resin, 1 ~ 3% polyoxypropyleneglycol, 1 ~ 5% garlic oil, 1 ~ 10% poly- para hydroxybenzene The double octadecyl esters of formic acid esters, 0.1 ~ 1% thio-2 acid are formed.
Further, first polyethylene layer is 80% polyethylene, 5% acrylic resin, 3% polyoxygenated by mass percent The double octadecyl esters of propylene glycol, 2% garlic oil, 10% ekonol, 0.1% thio-2 acid are formed.
Further, the 5th polyethylene layer is 80% polyethylene, 5% acrylic resin, 3% polyoxy by mass percent Change the double octadecyl esters of propylene glycol, 2% garlic oil, 10% ekonol, 0.1% thio-2 acid to form.
Or first polyethylene layer is 90% polyethylene, 2% acrylic resin, 3% polyoxygenated third by mass percent The double octadecyl esters of enediol, 2% garlic oil, 3% ekonol, 0.1% thio-2 acid are formed.
Further, the 5th polyethylene layer is 90% polyethylene, 2% acrylic resin, 3% polyoxy by mass percent Change the double octadecyl esters of propylene glycol, 2% garlic oil, 3% ekonol, 0.1% thio-2 acid to form.
Corresponding, present invention also offers a kind of production technology of seven-layer co-extrusion film, specifically include following steps：
S1：Weigh quantitative polyethylene, acrylic resin, polyoxypropyleneglycol, garlic oil, ekonol, sulphur It is well mixed, is then put into respectively in two extruderses, extruder screw is straight in batch mixer for the double octadecyl esters of dipropionic acid 65mm is selected in footpath, and the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 170 ~ 180 DEG C, the temperature of fuselage three Degree control is at 175 ~ 185 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, head Temperature control at 200 ~ 210 DEG C；
S2：Weigh quantitative polyethylene and polyolefin elastomer is put into two extruderses respectively, the choosing of extruder screw diameter With 65mm, the temperature control of fuselage one is at 150 ~ 160 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature control of fuselage three System is at 165 ~ 175 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, the temperature of head Degree control is at 200 ~ 210 DEG C；
S3：Weigh quantitative polypropylene, glass fibre, polyimides to put into two extruderses respectively, extruder screw diameter From 90mm, the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature of fuselage three Control at 170 ~ 180 DEG C, the temperature control of fuselage four at 185 ~ 195 DEG C, the temperature control of machine neck at 195 ~ 205 DEG C, head Temperature control is at 210 ~ 220 DEG C；
S4：Weigh in quantitative LLDPE and polyolefin elastomer input extruder, extruder screw diameter From 65mm, the temperature control of fuselage one is at 150 ~ 160 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature of fuselage three Control at 165 ~ 175 DEG C, the temperature control of fuselage four at 180 ~ 190 DEG C, the temperature control of machine neck at 190 ~ 200 DEG C, head Temperature control is at 200 ~ 210 DEG C；
S5：Above-mentioned seven tunic is cast by coextrusion mold by co-extrusion technology, obtains seven-layer co-extrusion film.
（Three）Beneficial effect
（1）Seven-layer co-extrusion film provided by the invention, using seven-layer co-extrusion technology, seven layer films produced, substantially increase Raising is obtained in terms of film body intensity, tearing toughness and tensile strength, there are good market prospects.
（2）Seven-layer co-extrusion film provided by the invention, two layers of use modified polyethylene material of head and the tail is made, including poly- second The double octadecyl esters of alkene, acrylic resin, polyoxypropyleneglycol, garlic oil, ekonol, thio-2 acid are formed, The mixing of various raw material is improved using garlic oil, while brings anti-microbial property, utilizes acrylic resin and PPOX two The double octadecyl esters of alcohol, thio-2 acid combine the light resistance and ageing resistace for improving polyethylene, ekonol with Polyethylene, which combines, improves its wear-resisting, tear resistance, while the layer that finishes up has certain viscosity, has preferably winding function, Intermediate layer tool polyethylene and polyolefin elastomer, LLDPE and polyolefin elastomer, have good resistance wet Function, it can prevent vapor from penetrating into, corrosion has good heat sealability and mechanical performance, in addition to polypropylene, glass fibers Dimension, polyimide layer, the polypropylene layer is located at the both sides in most intermediate layer, using this layer greatly improve overall tear resistance with And tensile strength.
（3）The production technology of seven-layer co-extrusion film provided by the invention, using seven-layer co-extrusion technology, pass through specific temperature And the setting of screw rod, to coordinate the shaping of above-mentioned film, moulding process is relatively simple, and production cost is relatively low, meets market need Ask.
Brief description of the drawings
Fig. 1 is the schematic diagram of seven-layer co-extrusion film in the present invention.
Embodiment
With reference to embodiment, the embodiment of the present invention is described in further detail.Following examples are used for Illustrate the present invention, but be not limited to the scope of the present invention.
Reference picture 1, the present invention provide a kind of seven-layer co-extrusion film, including the first polyethylene layer 1, second being in contact successively Polyethylene layer 2, the first polypropylene layer 3, the 3rd polyethylene layer 4, the second polypropylene layer 5, the 4th polyethylene layer 6 and the 5th poly- second Alkene layer 7；First polyethylene layer is 80 ~ 90% polyethylene, 1 ~ 5% acrylic resin, 1 ~ 3% polyoxygenated third by mass percent The double octadecyl esters of enediol, 1 ~ 5% garlic oil, 1 ~ 10% ekonol, 0.1 ~ 1% thio-2 acid are formed；Described second Polyethylene layer is that 90 ~ 95% polyethylene and 5 ~ 10% polyolefin elastomers are formed by mass percent；First polypropylene layer It is that 80 ~ 90% polypropylene, 5 ~ 10% glass fibres, 5 ~ 10% polyimides are formed by mass percent；3rd polyethylene layer by Mass percent is that 90 ~ 95% LLDPEs and 5 ~ 10% polyolefin elastomers are formed；Second polypropylene layer It is that 80 ~ 90% polypropylene, 5 ~ 10% glass fibres, 5 ~ 10% polyimides are formed by mass percent；4th polyethylene layer by Mass percent is that 90 ~ 95% polyethylene and 5 ~ 10% polyolefin elastomers are formed；5th polyethylene layer is by quality percentage Than for 80 ~ 90% polyethylene, 1 ~ 5% acrylic resin, 1 ~ 3% polyoxypropyleneglycol, 1 ~ 5% garlic oil, 1 ~ 10% poly- para hydroxybenzene The double octadecyl esters of formic acid esters, 0.1 ~ 1% thio-2 acid are formed.
Present invention also offers a kind of production technology of seven-layer co-extrusion film, comprise the following steps：
S1：Weigh quantitative polyethylene, acrylic resin, polyoxypropyleneglycol, garlic oil, ekonol, sulphur It is well mixed, is then put into respectively in two extruderses, extruder screw is straight in batch mixer for the double octadecyl esters of dipropionic acid 65mm is selected in footpath, and the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 170 ~ 180 DEG C, the temperature of fuselage three Degree control is at 175 ~ 185 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, head Temperature control at 200 ~ 210 DEG C；
S2：Weigh quantitative polyethylene and polyolefin elastomer is put into two extruderses respectively, the choosing of extruder screw diameter With 65mm, the temperature control of fuselage one is at 150 ~ 160 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature control of fuselage three System is at 165 ~ 175 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, the temperature of head Degree control is at 200 ~ 210 DEG C；
S3：Weigh quantitative polypropylene, glass fibre, polyimides to put into two extruderses respectively, extruder screw diameter From 90mm, the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature of fuselage three Control at 170 ~ 180 DEG C, the temperature control of fuselage four at 185 ~ 195 DEG C, the temperature control of machine neck at 195 ~ 205 DEG C, head Temperature control is at 210 ~ 220 DEG C；
S4：Weigh in quantitative LLDPE and polyolefin elastomer input extruder, extruder screw diameter From 65mm, the temperature control of fuselage one is at 150 ~ 160 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature of fuselage three Control at 165 ~ 175 DEG C, the temperature control of fuselage four at 180 ~ 190 DEG C, the temperature control of machine neck at 190 ~ 200 DEG C, head Temperature control is at 200 ~ 210 DEG C；
S5：Above-mentioned seven tunic is cast by coextrusion mold by co-extrusion technology, obtains seven-layer co-extrusion film.
With reference to specific embodiment, the present invention will be further elaborated：
Embodiment 1
First, weigh by weight 80 parts of polyethylene, 5 parts of acrylic resins, 3 parts of polyoxypropyleneglycols, 2 portions of garlic oils, 10 parts Ekonol and the double octadecyl esters of 0.1 part of thio-2 acid are well mixed in batch mixer, are then thrown respectively Enter in two extruderses, extruder screw diameter selects 65mm, and the temperature control of fuselage one is at 160 ~ 170 DEG C, the temperature of fuselage two Degree control is at 170 ~ 180 DEG C, and the temperature control of fuselage three is at 175 ~ 185 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, machine The temperature control of neck is at 190 ~ 200 DEG C, and the temperature control of head is at 200 ~ 210 DEG C；Simultaneously weigh by weight 90 parts of polyethylene with And 10 parts of polyolefin elastomers are put into two extruderses respectively, extruder screw diameter selects 65mm, the temperature control of fuselage one System is at 150 ~ 160 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, and the temperature control of fuselage three is at 165 ~ 175 DEG C, fuselage four Temperature control at 180 ~ 190 DEG C, the temperature control of machine neck is at 190 ~ 200 DEG C, and the temperature control of head is at 200 ~ 210 DEG C；Together Thing weighs 80 parts of polypropylene, 10 parts of glass fibres, 10 parts of polyimides and put into respectively in two extruderses, extruder screw diameter From 90mm, the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature of fuselage three Control at 170 ~ 180 DEG C, the temperature control of fuselage four at 185 ~ 195 DEG C, the temperature control of machine neck at 195 ~ 205 DEG C, head Temperature control is at 210 ~ 220 DEG C；90 parts of LLDPEs and 10 parts of polyolefin elastomer input extrusions are weighed simultaneously In machine, extruder screw diameter selects 65mm, and the temperature control of fuselage one is at 150 ~ 160 DEG C, and the temperature control of fuselage two is 160 ~ 170 DEG C, the temperature control of fuselage three is at 165 ~ 175 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, the temperature control of machine neck At 190 ~ 200 DEG C, the temperature control of head is at 200 ~ 210 DEG C；Finally by co-extrusion technology by above-mentioned seven tunic be cast co-extrusion into Type, obtain seven-layer co-extrusion film.
Embodiment 2
First, weigh by weight 90 parts of polyethylene, 2 parts of acrylic resins, 3 parts of polyoxypropyleneglycols, 2 portions of garlic oils, 3 parts it is poly- P-hydroxybenzoate and the double octadecyl esters of 0.1 part of thio-2 acid are well mixed in batch mixer, are then put into respectively In two extruderses, extruder screw diameter selects 65mm, and the temperature control of fuselage one is at 160 ~ 170 DEG C, the temperature of fuselage two Control is at 170 ~ 180 DEG C, and the temperature control of fuselage three is at 175 ~ 185 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, machine neck Temperature control at 190 ~ 200 DEG C, the temperature control of head is at 200 ~ 210 DEG C；Simultaneously weigh by weight 90 parts of polyethylene and 10 parts of polyolefin elastomers are put into two extruderses respectively, and extruder screw diameter selects 65mm, the temperature control of fuselage one At 150 ~ 160 DEG C, the temperature control of fuselage two at 160 ~ 170 DEG C, the temperature control of fuselage three at 165 ~ 175 DEG C, fuselage four Temperature control is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, and the temperature control of head is at 200 ~ 210 DEG C；Colleague Weigh 80 parts of polypropylene, 10 parts of glass fibres, 10 parts of polyimides to put into two extruderses respectively, the choosing of extruder screw diameter With 90mm, the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature control of fuselage three System is at 170 ~ 180 DEG C, and the temperature control of fuselage four is at 185 ~ 195 DEG C, and the temperature control of machine neck is at 195 ~ 205 DEG C, the temperature of head Degree control is at 210 ~ 220 DEG C；90 parts of LLDPEs and 10 parts of polyolefin elastomer input extruders are weighed simultaneously Interior, extruder screw diameter selects 65mm, the temperature control of fuselage one at 150 ~ 160 DEG C, the temperature control of fuselage two 160 ~ 170 DEG C, the temperature control of fuselage three is at 165 ~ 175 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, the temperature control of machine neck At 190 ~ 200 DEG C, the temperature control of head is at 200 ~ 210 DEG C；Finally by co-extrusion technology by above-mentioned seven tunic be cast co-extrusion into Type, obtain seven-layer co-extrusion film.
Embodiment 3
First, weigh by weight 85 parts of polyethylene, 5 parts of acrylic resins, 3 parts of polyoxypropyleneglycols, 2 portions of garlic oils, 5 parts it is poly- P-hydroxybenzoate and the double octadecyl esters of 0.1 part of thio-2 acid are well mixed in batch mixer, are then put into respectively In two extruderses, extruder screw diameter selects 65mm, and the temperature control of fuselage one is at 160 ~ 170 DEG C, the temperature of fuselage two Control is at 170 ~ 180 DEG C, and the temperature control of fuselage three is at 175 ~ 185 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, machine neck Temperature control at 190 ~ 200 DEG C, the temperature control of head is at 200 ~ 210 DEG C；Simultaneously weigh by weight 90 parts of polyethylene and 10 parts of polyolefin elastomers are put into two extruderses respectively, and extruder screw diameter selects 65mm, the temperature control of fuselage one At 150 ~ 160 DEG C, the temperature control of fuselage two at 160 ~ 170 DEG C, the temperature control of fuselage three at 165 ~ 175 DEG C, fuselage four Temperature control is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, and the temperature control of head is at 200 ~ 210 DEG C；Colleague Weigh 80 parts of polypropylene, 10 parts of glass fibres, 10 parts of polyimides to put into two extruderses respectively, the choosing of extruder screw diameter With 90mm, the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature control of fuselage three System is at 170 ~ 180 DEG C, and the temperature control of fuselage four is at 185 ~ 195 DEG C, and the temperature control of machine neck is at 195 ~ 205 DEG C, the temperature of head Degree control is at 210 ~ 220 DEG C；90 parts of LLDPEs and 10 parts of polyolefin elastomer input extruders are weighed simultaneously Interior, extruder screw diameter selects 65mm, the temperature control of fuselage one at 150 ~ 160 DEG C, the temperature control of fuselage two 160 ~ 170 DEG C, the temperature control of fuselage three is at 165 ~ 175 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, the temperature control of machine neck At 190 ~ 200 DEG C, the temperature control of head is at 200 ~ 210 DEG C；Finally by co-extrusion technology by above-mentioned seven tunic be cast co-extrusion into Type, obtain seven-layer co-extrusion film.
Coordinate above-described embodiment, compared with the polyethylene film common with the market, obtain a result as follows：
Project Polyethylene film Embodiment 1 Embodiment 2 Embodiment 3
Tensile strength Mpa 9.2 27.1 29.3 28.5
Tearing toughness MPa 7.1 12.6 14.4 13.9
From table results, film tearing toughness of the invention and tensile strength are above polyethylene common on the market Film, meanwhile, the tensile strength and tearing toughness highest of embodiment 2.
In summary, the restricted embodiment that it is the present invention that above-mentioned embodiment, which is not, all those skilled in the art The modification carried out on the basis of the substantive content of the present invention or equivalent deformation, the technology category in the present invention.

Claims (6)

1. a kind of seven-layer co-extrusion film, including the first polyethylene layer, the second polyethylene layer, the first polypropylene being in contact successively Layer, the 3rd polyethylene layer, the second polypropylene layer, the 4th polyethylene layer and the 5th polyethylene layer；
First polyethylene layer is 80 ~ 90% polyethylene, 1 ~ 5% acrylic resin, 1 ~ 3% PPOX by mass percent The double octadecyl esters of glycol, 1 ~ 5% garlic oil, 1 ~ 10% ekonol, 0.1 ~ 1% thio-2 acid are formed；
Second polyethylene layer is that 90 ~ 95% polyethylene and 5 ~ 10% polyolefin elastomers are formed by mass percent；
First polypropylene layer is 80 ~ 90% polypropylene, 5 ~ 10% glass fibres, 5 ~ 10% polyimides structures by mass percent Into；
3rd polyethylene layer is 90 ~ 95% LLDPEs and 5 ~ 10% polyolefin elastomers by mass percent Form；
Second polypropylene layer is 80 ~ 90% polypropylene, 5 ~ 10% glass fibres, 5 ~ 10% polyimides structures by mass percent Into；
4th polyethylene layer is that 90 ~ 95% polyethylene and 5 ~ 10% polyolefin elastomers are formed by mass percent；
5th polyethylene layer is 80 ~ 90% polyethylene, 1 ~ 5% acrylic resin, 1 ~ 3% PPOX by mass percent The double octadecyl esters of glycol, 1 ~ 5% garlic oil, 1 ~ 10% ekonol, 0.1 ~ 1% thio-2 acid are formed.
2. a kind of seven-layer co-extrusion film according to claim 1, it is characterised in that first polyethylene layer is by quality percentage Than for 80% polyethylene, 5% acrylic resin, 3% polyoxypropyleneglycol, 2% garlic oil, 10% ekonol, 0.1% The double octadecyl esters of thio-2 acid are formed.
3. a kind of seven-layer co-extrusion film according to claim 1, it is characterised in that the 5th polyethylene layer is by quality percentage Than for 80% polyethylene, 5% acrylic resin, 3% polyoxypropyleneglycol, 2% garlic oil, 10% ekonol, 0.1% The double octadecyl esters of thio-2 acid are formed.
4. a kind of seven-layer co-extrusion film according to claim 1, it is characterised in that first polyethylene layer is by quality percentage Than for 90% polyethylene, 2% acrylic resin, 3% polyoxypropyleneglycol, 2% garlic oil, 3% ekonol, 0.1% The double octadecyl esters of thio-2 acid are formed.
5. a kind of seven-layer co-extrusion film according to claim 1, it is characterised in that the 5th polyethylene layer is by quality percentage Than for 90% polyethylene, 2% acrylic resin, 3% polyoxypropyleneglycol, 2% garlic oil, 3% ekonol, 0.1% The double octadecyl esters of thio-2 acid are formed.
6. a kind of production technology of seven-layer co-extrusion film, it is characterised in that comprise the following steps：
S1：Weigh quantitative polyethylene, acrylic resin, polyoxypropyleneglycol, garlic oil, ekonol, sulphur It is well mixed, is then put into respectively in two extruderses, extruder screw is straight in batch mixer for the double octadecyl esters of dipropionic acid 65mm is selected in footpath, and the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 170 ~ 180 DEG C, the temperature of fuselage three Degree control is at 175 ~ 185 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, head Temperature control at 200 ~ 210 DEG C；
S2：Weigh quantitative polyethylene and polyolefin elastomer is put into two extruderses respectively, the choosing of extruder screw diameter With 65mm, the temperature control of fuselage one is at 150 ~ 160 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature control of fuselage three System is at 165 ~ 175 DEG C, and the temperature control of fuselage four is at 180 ~ 190 DEG C, and the temperature control of machine neck is at 190 ~ 200 DEG C, the temperature of head Degree control is at 200 ~ 210 DEG C；
S3：Weigh quantitative polypropylene, glass fibre, polyimides to put into two extruderses respectively, extruder screw diameter From 90mm, the temperature control of fuselage one is at 160 ~ 170 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature of fuselage three Control at 170 ~ 180 DEG C, the temperature control of fuselage four at 185 ~ 195 DEG C, the temperature control of machine neck at 195 ~ 205 DEG C, head Temperature control is at 210 ~ 220 DEG C；
S4：Weigh in quantitative LLDPE and polyolefin elastomer input extruder, extruder screw diameter From 65mm, the temperature control of fuselage one is at 150 ~ 160 DEG C, and the temperature control of fuselage two is at 160 ~ 170 DEG C, the temperature of fuselage three Control at 165 ~ 175 DEG C, the temperature control of fuselage four at 180 ~ 190 DEG C, the temperature control of machine neck at 190 ~ 200 DEG C, head Temperature control is at 200 ~ 210 DEG C；
S5：Above-mentioned seven tunic is cast by coextrusion mold by co-extrusion technology, obtains seven-layer co-extrusion film.
CN201710952498.5A 2017-10-13 2017-10-13 A kind of seven-layer co-extrusion film and its production technology Pending CN107718827A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109159519A (en) * 2018-09-11 2019-01-08 嘉兴鹏翔包装材料有限公司 A kind of high sealing-strength bidirection stretching polyolefine heat-shrinkable film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109159519A (en) * 2018-09-11 2019-01-08 嘉兴鹏翔包装材料有限公司 A kind of high sealing-strength bidirection stretching polyolefine heat-shrinkable film

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Application publication date: 20180223