CN106751552A - A kind of strength modified heat-shrinkable film of anti-puncture high with double-decker and preparation method thereof - Google Patents

A kind of strength modified heat-shrinkable film of anti-puncture high with double-decker and preparation method thereof Download PDF

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Publication number
CN106751552A
CN106751552A CN201610986960.9A CN201610986960A CN106751552A CN 106751552 A CN106751552 A CN 106751552A CN 201610986960 A CN201610986960 A CN 201610986960A CN 106751552 A CN106751552 A CN 106751552A
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China
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double
shrinkable film
melt
modified heat
antioxidant
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Inventor
章云
张贝尼
张娃妮
柯模松
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Anhui Yi Caini Fibrous Material Science And Technology Ltd
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Anhui Yi Caini Fibrous Material Science And Technology Ltd
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Publication of CN106751552A publication Critical patent/CN106751552A/en
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    • 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
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
    • 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
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • 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
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • 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
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B32B2307/734—Dimensional stability
    • B32B2307/736—Shrinkable
    • 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
    • C—CHEMISTRY; METALLURGY
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
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    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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    • C08L2201/00—Properties
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    • C—CHEMISTRY; METALLURGY
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
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    • 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
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers

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  • Chemical Kinetics & Catalysis (AREA)
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  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

The invention discloses a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker and preparation method thereof；The strength modified heat-shrinkable film of anti-puncture high uses double-layer structural：Internal layer and outer layer；Outer layer is made up of following raw material：Polyethylene terephthalate polymer, polyvinyl chloride, inorganic filler stone flour, Its Compatibilizing Technology, non-toxic organic tin stabilizer；Internal layer is made up of following raw material：EVAc, glass powder, antioxidant, plasticizer.Film of the invention is a kind of anti-puncture intensity high, the heat shrink films of the splendid way contracting of transparency, have the advantages that the high grade of transparency and contractile function are strong simultaneously, steadiness is good in packaging process, reduce the breakage in transportation, collapse, the phenomenon such as Bales Off, most of self-action, the requirement of auto-manual system package packing machine are adapted to, foreign export, papermaking, hardware, plastics chemical industry, building materials, food pharmaceuticals industry is can be widely used in.

Description

A kind of strength modified heat-shrinkable film of anti-puncture high and its preparation with double-decker Method
Technical field
The invention belongs to heat shrink wrap material field, and in particular to a kind of anti-puncture intensity high with double-decker changes Thermal shrinkage film and preparation method thereof.
Background technology
Heat-shrinkable film is a kind of new heat shrink wrap material；This material can not only reduce packaging production cost, fortune Defeated cost, reduction packaging volume, also because of the shelf life that it has transparency higher, good printing performance, increases product, competition Consumer's sight can be rapidly caught in fierce market, cater to consumer demand.Thus obtained extensively in European and American developed countries Pay attention to and apply.Heat-shrinkable film is widely used in food, medicine, sterilizing dinnerware, stationery sports goods, process gift, printed matter, five The external packing of golden plastic products, telephone set, electronic apparatus etc. various products, especially in anomalistic object article or commodity Combined type (boundling) packaging aspect, can meet commodity it is moistureproof dust-proof, touch-proof substitute for another surreptitiously, the function such as transparent display, and can increase Plus product appearance attraction, it can also be used to instead of all kinds of cartons, packing cost is not only saved, and meet packaging trend.Shrink Film (bag) can be processed into：The abnormity sack such as flat mouth bag, circular arc bag, trapezoidal bag, stereoscopic bag.More shrink film is used at present It is PVC, PE, PP, next has PVDC, PET, EVA, chlorinated rubber etc..
Multi-layer co-extruded shrink film is the two-way drawing of a kind of new high shrinkage developed on the basis of POF shrink films in recent years Shrink film is stretched, it can make the physical and mechanical properties of product change.Matched somebody with somebody by different in multi-layer co-extruded shrink film production Side's design and degree of cross linking control can be obtained the product of different performance requirement, be adapted to different packaging facilities and product.This hair Bright to have good stability there is provided one kind, equilibrium is shunk, and the anti-puncture intensity high of the double-decker such as good percentage elongation, transparency be high changes Thermal shrinkage film and preparation method thereof.
The content of the invention
It is strength modified that 1st technical problem to be solved by this invention is to provide a kind of anti-puncture high with double-decker Heat-shrinkable film.
2nd technical problem to be solved by this invention is the preparation method of above-mentioned modified heat-shrinkable film.
The problem that the present invention is solved is a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker, the film Using double-layer structural：Internal layer and outer layer；Outer layer is made up of the raw material of following parts by weight meter：PET is polymerized Thing 75-85, polyvinyl chloride 10-18, inorganic filler stone flour 2-4, Its Compatibilizing Technology 2-4, non-toxic organic tin stabilizer 0.2-1； Internal layer is made up of the raw material of following parts by weight meter：Vinyl-vinyl acetate copolymer 80-90, glass powder 5-12, antioxidant 5- 8th, plasticizer 0.2-1.
The specifications and models of the glass powder are E (C) MG-250C.
The inorganic filler stone flour is the one kind in active calcium carbonate powder, talcum powder or blanc fixe.
The Its Compatibilizing Technology is modified polyacrylate or m- isopropenyl -2,2- dimethyl benzoyl isocyanates.
The non-toxic organic tin stabilizer is in thiol methyl tin ST-181, organotin ST-182, organotin ST-189 It is a kind of.
The plasticizer is dibutyl phthalate or dioctyl phthalate.
The antioxidant is selected from antioxidant 1010, antioxidant 1076, irgasfos 168, antioxidant 264, antioxidant 1099 One kind.
The preparation method of above-mentioned modified heat-shrinkable film, comprises the following steps：
A) dried process：By polyethylene terephthalate polymer, polyvinyl chloride, vinyl-vinyl acetate copolymer 4-5h is dried with 100-120 DEG C of temperature by fluid bed and obtains dry feedstock；
B) melting extrusion：By inorganic filler stone flour, Its Compatibilizing Technology, non-toxic organic tin stabilizer and by step a) Polyethylene terephthalate polymer, the polyvinyl chloride of dried process are heated to molten in being added to main extruder in proportion State, through being filtrated to get as the main frame melt of outer layer；Be proportionally added into subsidiary extruder glass powder, plasticizer, antioxidant and By the vinyl-vinyl acetate copolymer of dried process in step a), obtained as interior by after melting, vacuumize process The auxiliary crowded melt of layer；Main crowded melt and auxiliary crowded melt converge extrusion in double-deck die head；Wherein main extruder melt temperature is 250-260 DEG C, subsidiary extruder melt temperature is 200-220 DEG C, converges extrusion temperature for 220-240 DEG C；
C) it is cast slab：The blend melt of melting extrusion enters rack-style by melt metering pump, filter, melt pipe It is cast to after die head on cooler drum and forms slab；Wherein, the cooling water temperature of cooler drum is controlled at 20-30 DEG C；
D) simple tension：The slab that will be obtained via step c) carries out cross directional stretch while hot by being reheated after preheating With the treatment of longitudinal stretching multiple；Wherein, the preheating temperature of stretching is 90-100 DEG C, and the time is 15-30min, and draft temperature is 105-115 DEG C, draw ratio is 3-4 times；
E) wind, cut：By the film of simple tension by thickness measuring, traction winding, cutting obtains the heat of double-layer structural Shrinkable film finished product.
Beneficial effects of the present invention：The strength modified heat-shrinkable film of anti-puncture high of double-decker of the invention has following Advantage：
1st, excellent self-adhesive energy；
2nd, good pliability and draftability, looping ability are strong；
3rd, anti-puncture intensity high；
4th, the high grade of transparency and glossiness；
5th, contractile function is strong, and retraction tightness is good；
6th, wrapping material part entirety steadiness is good, reduce the breakage in transportation, collapse, the phenomenon such as Bales Off.
Specific embodiment
Specific embodiment of the invention is illustrated below.It should be appreciated that specific implementation described herein Mode is merely to illustrate and explain the present invention, and is not intended to limit the invention.In embodiment, PET polymerization Thing, polyvinyl chloride, vinyl-vinyl acetate copolymer, glass powder, antioxidant 1010,1076, talcum powder, blanc fixe, adjacent benzene Dibutyl carboxylic acid, dioctyl phthalate are Gaede chemical industry net commercially available product；Thiol methyl tin ST-181, organotin ST-182 It is Sheng Teng macromolecular materials Co., Ltd of Foshan City commercially available product.
Embodiment 1
A kind of strength modified heat-shrinkable film of anti-puncture high with double-decker, the film uses double-layer structural：Internal layer And outer layer；Outer layer is made up of the raw material of following parts by weight meter：Polyethylene terephthalate polymer 82, polyvinyl chloride 12, Talcum powder 3, modified polyacrylate 2.5, thiol methyl tin ST-181 0.5；Internal layer by following parts by weight meter raw material group Into：Vinyl-vinyl acetate copolymer 83, glass powder 10, antioxidant 1010 6.5, dibutyl phthalate 0.5.
The preparation method of above-mentioned modified heat-shrinkable film, comprises the following steps：
A) dried process：By polyethylene terephthalate polymer, polyvinyl chloride, vinyl-vinyl acetate copolymer 4h is dried with 110 DEG C of temperature by fluid bed and obtains dry feedstock；
B) melting extrusion：By inorganic filler stone flour, Its Compatibilizing Technology, non-toxic organic tin stabilizer and by step a) Polyethylene terephthalate polymer, the polyvinyl chloride of dried process are heated to molten in being added to main extruder in proportion State, through being filtrated to get as the main frame melt of outer layer；Be proportionally added into subsidiary extruder glass powder, plasticizer, antioxidant and By the vinyl-vinyl acetate copolymer of dried process in step a), obtained as interior by after melting, vacuumize process The auxiliary crowded melt of layer；Main crowded melt and auxiliary crowded melt converge extrusion in double-deck die head；Wherein main extruder melt temperature is 250 DEG C, subsidiary extruder melt temperature is 210 DEG C, converges extrusion temperature for 230 DEG C；
C) it is cast slab：The blend melt of melting extrusion enters rack-style by melt metering pump, filter, melt pipe It is cast to after die head on cooler drum and forms slab；Wherein, the cooling water temperature of cooler drum is controlled at 28 DEG C；
D) simple tension：The slab that will be obtained via step c) carries out cross directional stretch while hot by being reheated after preheating With the treatment of longitudinal stretching multiple；Wherein, the preheating temperature of stretching is 95 DEG C, and the time is 25min, and draft temperature is 110 DEG C, stretching Multiple is 3 times；
E) wind, cut：By the film of simple tension by thickness measuring, traction winding, cutting obtains the heat of double-layer structural Shrinkable film finished product.
Embodiment 2
A kind of strength modified heat-shrinkable film of anti-puncture high with double-decker, the film uses double-layer structural：Internal layer And outer layer；Outer layer is made up of the raw material of following parts by weight meter：Polyethylene terephthalate polymer 80, polyvinyl chloride 13, Blanc fixe 2, modified polyacrylate 4, organotin ST-182 1；Internal layer is made up of the raw material of following parts by weight meter：Ethene- Vinyl acetate copolymer 82, glass powder 10, antioxidant 1076 7, dioctyl phthalate 1.
The preparation method of above-mentioned modified heat-shrinkable film, comprises the following steps：
A) dried process：By polyethylene terephthalate polymer, polyvinyl chloride, vinyl-vinyl acetate copolymer 5h is dried with 120 DEG C of temperature by fluid bed and obtains dry feedstock；
B) melting extrusion：By inorganic filler stone flour, Its Compatibilizing Technology, non-toxic organic tin stabilizer and by step a) Polyethylene terephthalate polymer, the polyvinyl chloride of dried process are heated to molten in being added to main extruder in proportion State, through being filtrated to get as the main frame melt of outer layer；Be proportionally added into subsidiary extruder glass powder, plasticizer, antioxidant and By the vinyl-vinyl acetate copolymer of dried process in step a), obtained as interior by after melting, vacuumize process The auxiliary crowded melt of layer；Main crowded melt and auxiliary crowded melt converge extrusion in double-deck die head；Wherein main extruder melt temperature is 260 DEG C, subsidiary extruder melt temperature is 220 DEG C, converges extrusion temperature for 240 DEG C；
C) it is cast slab：The blend melt of melting extrusion enters rack-style by melt metering pump, filter, melt pipe It is cast to after die head on cooler drum and forms slab；Wherein, the cooling water temperature of cooler drum is controlled at 30 DEG C；
D) simple tension：The slab that will be obtained via step c) carries out cross directional stretch while hot by being reheated after preheating With the treatment of longitudinal stretching multiple；Wherein, the preheating temperature of stretching is 100 DEG C, and the time is 30min, and draft temperature is 115 DEG C, is drawn Multiple is stretched for 4 times；
E) wind, cut：By the film of simple tension by thickness measuring, traction winding, cutting obtains the heat of double-layer structural Shrinkable film finished product.
The technical parameter of the strength modified heat-shrinkable film of anti-puncture high of the double-decker prepared using the present invention is as follows：

Claims (8)

1. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker, it is characterised in that the film is using double-deck Construction：Internal layer and outer layer；Outer layer is made up of the raw material of following parts by weight meter：Polyethylene terephthalate polymer 75-85, Polyvinyl chloride 10-18, inorganic filler stone flour 2-4, Its Compatibilizing Technology 2-4, non-toxic organic tin stabilizer 0.2-1；Internal layer by with The raw material composition of lower parts by weight meter：Vinyl-vinyl acetate copolymer 80-90, glass powder 5-12, antioxidant 5-8, plasticizer 0.2-1。
2. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker according to claim 1, its feature It is：The specifications and models of the glass powder are E (C) MG-250C.
3. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker according to claim 1, its feature It is：The inorganic filler stone flour is the one kind in active calcium carbonate powder, talcum powder or blanc fixe.
4. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker according to claim 1, its feature It is：The Its Compatibilizing Technology is modified polyacrylate or m- isopropenyl -2,2- dimethyl benzoyl isocyanates.
5. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker according to claim 1, its feature It is：The non-toxic organic tin stabilizer is in thiol methyl tin ST-181, organotin ST-182, organotin ST-189 Kind.
6. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker according to claim 1, its feature It is：The plasticizer is dibutyl phthalate or dioctyl phthalate.
7. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker according to claim 1, its feature It is：The antioxidant is selected from antioxidant 1010, antioxidant 1076, irgasfos 168, antioxidant 264, antioxidant 1099 Kind.
8. a kind of strength modified heat-shrinkable film of anti-puncture high with double-decker described in claim 1-7 any one Preparation method, it is characterised in that comprise the following steps：
A) dried process：Polyethylene terephthalate polymer, polyvinyl chloride, vinyl-vinyl acetate copolymer are passed through Fluid bed dries 4-5h and obtains dry feedstock with 100-120 DEG C of temperature；
B) melting extrusion：By inorganic filler stone flour, Its Compatibilizing Technology, non-toxic organic tin stabilizer and by step a) dry Polyethylene terephthalate polymer, the polyvinyl chloride for the treatment of are heated to molten condition in being added to main extruder in proportion, Through being filtrated to get as the main frame melt of outer layer；Glass powder, plasticizer, antioxidant and process are proportionally added into subsidiary extruder The vinyl-vinyl acetate copolymer of dried process in step a), obtains as internal layer by after melting, vacuumize process Auxiliary crowded melt；Main crowded melt and auxiliary crowded melt converge extrusion in double-deck die head；Wherein main extruder melt temperature is 250-260 DEG C, subsidiary extruder melt temperature is 200-220 DEG C, converges extrusion temperature for 220-240 DEG C；
C) it is cast slab：The blend melt of melting extrusion enters hanger-style die by melt metering pump, filter, melt pipe After be cast on cooler drum and form slab；Wherein, the cooling water temperature of cooler drum is controlled at 20-30 DEG C；
D) simple tension：The slab that will be obtained via step c) carries out cross directional stretch and indulges while hot by being reheated after preheating Processed to draw ratio；Wherein, the preheating temperature of stretching is 90-100 DEG C, and the time is 15-30min, and draft temperature is 105-115 DEG C, draw ratio is 3-4 times；
E) wind, cut：By the film of simple tension by thickness measuring, traction winding, cutting obtains the thermal contraction of double-layer structural Finished film.
CN201610986960.9A 2016-11-01 2016-11-01 A kind of strength modified heat-shrinkable film of anti-puncture high with double-decker and preparation method thereof Pending CN106751552A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107312294A (en) * 2017-07-21 2017-11-03 江苏中大包装材料有限公司 A kind of preparation method of Laminited plastic sheeting
CN114836009A (en) * 2021-12-24 2022-08-02 浙江坤垣材料科技有限公司 Low-temperature heat shrinkable film and preparation method thereof
CN114672109B (en) * 2022-04-02 2023-04-07 宜兴市光辉包装材料有限公司 PVC heat-shrinkable label film and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101679818A (en) * 2007-04-05 2010-03-24 艾利丹尼森公司 Pressure sensitive shrink label
CN101754853A (en) * 2007-07-23 2010-06-23 纳幕尔杜邦公司 The heat-shrinkable multilayer film or the pipe of exhibits shrink stability after orientation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101679818A (en) * 2007-04-05 2010-03-24 艾利丹尼森公司 Pressure sensitive shrink label
CN101754853A (en) * 2007-07-23 2010-06-23 纳幕尔杜邦公司 The heat-shrinkable multilayer film or the pipe of exhibits shrink stability after orientation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107312294A (en) * 2017-07-21 2017-11-03 江苏中大包装材料有限公司 A kind of preparation method of Laminited plastic sheeting
CN114836009A (en) * 2021-12-24 2022-08-02 浙江坤垣材料科技有限公司 Low-temperature heat shrinkable film and preparation method thereof
CN114672109B (en) * 2022-04-02 2023-04-07 宜兴市光辉包装材料有限公司 PVC heat-shrinkable label film and preparation method thereof

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Application publication date: 20170531