CN106318252B - A kind of co-extrusion application type protective glue band and preparation method thereof - Google Patents

A kind of co-extrusion application type protective glue band and preparation method thereof Download PDF

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Publication number
CN106318252B
CN106318252B CN201610696787.9A CN201610696787A CN106318252B CN 106318252 B CN106318252 B CN 106318252B CN 201610696787 A CN201610696787 A CN 201610696787A CN 106318252 B CN106318252 B CN 106318252B
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adhesive layer
raw material
substrate layer
substrate
parts
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CN106318252A (en
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方振华
任忠平
叶建彭
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Ningbo Zhuo Shengxin Material Co Ltd
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Ningbo Zhuo Shengxin Material Co Ltd
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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
    • 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
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J107/00—Adhesives based on natural rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J109/00—Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/41—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the carrier layer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/414—Additional features of adhesives in the form of films or foils characterized by the presence of essential components presence of a copolymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2407/00—Presence of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2409/00—Presence of diene rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate

Abstract

The present invention relates to a kind of co-extrusion application type protective glue bands and preparation method thereof, including substrate layer, adhesive layer and adhesive layer, the substrate layer to be made of polypropylene and linear low density polyethylene；The adhesive layer is ethylene-vinyl acetate copolymer；The adhesive layer includes rubber and tackifying resin.Preparation method, which includes: (1), to be supplied adhesive layer and substrate layer raw material to die head respectively by two material paths and obtains female substrate by cooling and shaping by die head by adhesive layer, the compound casting film-forming of substrate layer raw material；(2) it is coated on after diluting coating fluid on female substrate and forms adhesive layer, wound, cut into required size to obtain the final product.Peel strength of the present invention is suitable, and will not generate peel strength rising over time and be difficult to remove, will not be in roll-in, punching press processing procedure because compression shock causes spare and accessory parts surface residue glue；Preparation method is simple, at low cost, has a good application prospect.

Description

A kind of co-extrusion application type protective glue band and preparation method thereof
Technical field
The invention belongs to auto-parts surface protection field, in particular to a kind of co-extrusion application type protective glue band and its system Preparation Method.
Background technique
It is related to roll-in, punching press, cross cutting, washing, etching etc. in auto-parts production preparation process to be made.Spare and accessory parts The a part of product as vehicle complete vehicle requires product face that must not have scuffing, abrasion, watermark, mist shadow, dust etc. to lack in processing procedure It falls into.It is generally formed for substrate by acrylic resins of painting adhesive using common PE, CPP in conventional manufacturing process domestic at present For film as protection, being attached at product surface prevents the product surface in processing procedure from damaging.
It requires surface protection tape that there is suitable peel strength as protective glue band, on the one hand needs to keep tolerance different On the other hand the bond properties of use environment can be removed readily when completing surface protecting function, and require not pollute Spare and accessory parts surface does not remain the trace of protective glue band on spare and accessory parts surface.In the bright panel of automobile, aluminum alloy surface, especially It is strict with surface protection tape and does not pollute spare and accessory parts surface, and not because of the out-of-flatnesses defect such as bubble, flake in protective glue band Either fold etc. is the defects of generating hollow, mark, scuffing or deformation on spare and accessory parts surface.The requirement is with internal vapor garage The development of industry becomes to be increasingly stringenter, and after protective glue band is pasted on spare and accessory parts surface, spare and accessory parts are waited until after roll-in, punching press Shape needed for mold influences in the case where compression shock due to being impacted etc., and protective glue band bears to squeeze, so sometimes Residue glue can be generated, or since adhesive tape pastes residual bubble, because of the bring out-of-flatness of tape surface bubble after bearing deformation It is damaged that tape surface is generated sometimes, in turn results in the defects of spare and accessory parts surface generates scuffing, mark.
It should be noted that protective glue band is usually supplied with web-like, tape thickness is uniform, and adhesive is evenly distributed in glue Band inner face.Current protective glue belt type mainly has composite co-extruding adhesive tape, reaches glutinous by tackifying resin compound on substrate and covers Effect；Another kind is formed by being coated with binder resin on substrate, and binder resin can be divided into acrylic resin, emulsion-type again Acrylic acid, rubber three types.
As described above, auto-parts surface protection tape requires completely in terms of membrane material characteristic and manufacturing process two Foot, proposes many schemes thus.As auto-parts surface protection tape is used for, acrylic resin type adhesive tape is excellent because of its Weather-proof and cementability and be widely used, while can be got higher with the time there is also some apparent defects, such as peel strength, very To finally adhesive tape occur removes difficulty.Being easy to appear glue-line cohesional failure in experience high temperature or impact process leads to degumming, And then it pollutes by protection surface.Rubber-type protective glue band pastes performance with good, has to the peel strength of various substrates Outstanding performance, while stripping performance is stablized.In addition, as common protective glue band residue glue is improved in improvement punching press, nipping process Problem, proposes increase adhesive cohesive force and substrate does the work that pretreatment increases cohesive force.In turn, protective glue is being used After band is attached to spare and accessory parts surface, implement punching press, roll-in, water mill, cutting off processing raising protective capability.However various schemes all respectively have The chief, does not have found not only to have had and excellent pastes performance but also the perfect related protective glue band for meeting spare and accessory parts processing procedure.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of co-extrusion application type protective glue band and preparation method thereof, the guarantors Retaining tape overcomes because small paste out-of-flatness or residue glue and the technology of the generation pollution of spare and accessory parts surface or mark is caused to ask Topic.
A kind of co-extrusion application type protective glue band of the invention, including substrate layer, adhesive layer and adhesive layer, the substrate layer by Polypropylene and linear low density polyethylene composition；The adhesive layer is ethylene-vinyl acetate copolymer；The adhesive layer includes rubber Glue and tackifying resin.
Polyacrylic mass percent is 30-70% in the substrate layer.
The substrate layer with a thickness of 10-25 μm.
The polyacrylic density is 0.90-0.91g/cm3, fusing point is 167-170 DEG C, and melt index MI is 0.5-2g/ 10min；The density of the linear low density polyethylene is 0.918~0.935g/cm3, fusing point is 121-127 DEG C, melt index MI is 0.1-1.9g/10min.Due to linear low density polyethylene have short-side chain, while with it is polypropene blended after play toughening Effect higher anti-stretches intensity, penetration-resistant, tear resistance and elongation to have protective glue band.And acrylic resin Need suitable fusing point, softening point, toughness, the transparency, impact strength.
The ethylene-vinyl acetate copolymer VA content is 5%-15%, density 0.935-0.947g/cm3, melting refers to Number MI is 3-10g/10min, and fusing point is 60-87 DEG C.Ethylene-vinyl acetate copolymer is by two kinds of lists of ethylene and vinyl acetate A kind of thermoplastic resin obtained by body copolymerization, property is related with the content of its vinylacetate (VA), as VA content increases, Light transmittance increases, and the flexibility enhancing of material, adhesive property also increases therewith, but increasing for VA group also results in resin simultaneously The reduced performances such as itself crystallinity, mechanical strength, heat distortion temperature.In order to enable reaching between substrate layer and adhesive layer good Bonding it is compound, suitable elasticity modulus and VA value are necessary.
The adhesive layer with a thickness of 10-25 μm.
In order to realize that protective glue band of the present invention needs the coating on female substrate to form adhesive layer.
The composition of the adhesive layer are as follows: with rubber quality part for 100 parts, 40-140 parts of tackifying resin, 5-15 parts of naphthenic oil, 1-5 parts of paraffin, 50-100 parts of solvent.
In order to reach bonding effect of the present invention, it is necessary to add tackifying resin, effect is to confer to pressure sensitive adhesive necessity Tack and bonding force, studies have shown that tackifying resin be more than it is a certain amount of when, then with rubber formed two-phase dispersion, rubber For continuous phase, the enough cohesive strengths of pressure sensitive adhesive are assigned；Tackifying resin and a small amount of low molecule rubber are dispersed phase, in adhesive interface A very thin viscous layer is formed, VISCOUS FLOW can directly occur in external force, is moistened by maxxaedium to make initial bonding strength increase Greatly.When the ratio of tackifying resin and rubber is appropriate, tackifying resin can be well dispersed in rubber phase, and at this moment initial bonding strength reaches Maximum value, performance are best；Phase transition sharply occurs if amount of resin is excessive, making resin mutually becomes continuous phase and rubber phase transformation For dispersed phase, glue-line just loses the decline of initial bonding strength performance.
The rubber is natural rubber, butadiene-styrene rubber, Oppanol, cis-1,4-polyisoprene rubber, suitable fourth One or more of rubber, styrene-butadiene latex；Tackifying resin is liquid nitrile rubber, liquid isoprene rubber, liquid second third One of rubber, liquid natural rubber, liquid propene acid esters rubber, liquid polyisobutene rubber, liquid cis butadiene are several Kind；Solvent is high rate of volatilization solvent acetone, ethyl acetate, tetrahydrofuran, butanone, methyl acetate, medium rate of volatilization solvent N-butyl acetate, isobutyl acetate, toluene, dimethylbenzene, pentyl acetate, low volatility solvent propylene glycol methyl ether, propylene glycol fourth One or more of ether, dipropylene glycol methyl ether, propylene glycol monomethyl ether, cyclohexanone.
The antioxygen of substrate layer raw material gross mass 0.1%-0.5% is also added in the substrate layer, adhesive layer and adhesive layer The light stabilizer of agent and/or substrate layer raw material gross mass 0.1%-2%.
Since linear low density polyethylene of the present invention, ethylene-vinyl acetate copolymer melting temperature are lower, and Contain tertiary hydrogen class active hydrogen in two kinds of polymer.In the work of heat, light or oxygen during compound extruded and in normal use process Under, the chemical bond of organic molecule is broken, and generates active free radical and hydroperoxides.Hydroperoxides are decomposed Reaction also generates alkoxy free group and hydroxyl radical free radical.These free radicals can trigger a series of free chain reaction, lead It causes the structure of organic compound and property that basic change occurs, and then influences protected surface, need to add appropriate metrology Antioxidant eliminates the free radical generated, or promotes the decomposition of hydroperoxides, prevents the progress of chain reaction.
The antioxidant is made of primary antioxidant and auxiliary antioxidant；Wherein, primary antioxidant be aromatic amine antioxidant, by Hinder one or both of phenolic antioxidant；Auxiliary antioxidant is thioether class or organic phosphorus compound.
The mass ratio of the primary antioxidant and auxiliary anti-oxidant is 4:1-2:1.
The aromatic amine antioxidant can for compounds and its derivative such as diphenylamines, p-phenylenediamine and dihydroquinoline or Polymer.
The Hinered phenols antioxidant can be 2,6- di-tert-butyl-4-methy phenol, bis- (3,5- di-t-butyl -4- hydroxyls Base phenyl) thioether, four (β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol esters etc..
The auxiliary antioxidant can be thio-2 acid dibasic acid esters, double Lauryl Alcohol esters, bi-myristoleyl, double 18 Carbon alcohol ester, three monooctyl esters, three last of the ten Heavenly stems esters, three (Lauryl Alcohol) esters, three (16 carbon alcohol) ester, phosphorous acid esters etc..
Meanwhile it is right in turn with the radiation that will receive ultraviolet light not being avoided that in use process and transportational process in protective glue Protective glue band generates light aging, decomposes, and causes protection tape performance decline, further to influence by the quality of protection face.In order to Such issues that overcome need to be in the light stabilizer of adhesive layer and substrate layer addition appropriate metrology.It can shield or absorb the energy of ultraviolet light Hydroperoxides and are resolved into the functions such as inert matter at quenching singlet oxygen by amount, make high molecular polymer in the radiation of light Under, photochemical reaction possibility can be excluded or be slowed down, the process of light aging is prevented or postpone, to reach extension high molecular polymerization The purpose of Tetramune service life.
The light stabilizer can for septichen phenyl ester, 2- (2- hydroxy-5-methyl base phenyl) benzotriazole, 2,4 dihydroxyl benzophenone, ESCALOL 567,2-hydroxy-4-n-octoxybenzophenone, 2- (2- hydroxyl The tertiary phenyl of base -3,5- two) -5- chlorination benzotriazole, single benzoic acid resorcinol, 2,2 '-thiobis (4- t-octyl phenol oxygen Base) nickel, three (1,2,2,6,6- pempidine base) phosphite esters, 4 benzoyloxy 2,2,6,6 tetramethyl piperidine, 2,4,6- Three (2 ' n-butoxyphenyl) -1,3,5- triazines etc..
A kind of preparation method of application type protective glue band of the invention, includes the following steps:
(1) adhesive layer and substrate layer raw material are supplied to die head respectively by two material paths, by die head by adhesive layer, substrate layer The compound casting film-forming of raw material obtains female substrate by cooling and shaping；
(2) it is coated on after diluting coating fluid on female substrate and forms adhesive layer, wound, cut into required size up to co-extrusion Application type protective glue band.
Using curtain coating coextru-lamination moulding process, substrate layer cavity temperature is 230-250 DEG C；Adhesive layer cavity temperature is 70-120℃；Chill-roll temperature is 0-30 DEG C in cooling and shaping, and chill roll surface temperature difference is no more than 0.1 DEG C.
Beneficial effect
Peel strength of the present invention is suitable, and will not generate peel strength rising over time and be difficult to remove, will not Because compression shock causes spare and accessory parts surface residue glue in roll-in, punching press processing procedure；Preparation method is simple, at low cost, has good Application prospect.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited Range.
Embodiment 1
Substrate layer raw material: polypropylene and linear low density polyethylene, wherein polyacrylic mass percent is 30%.Linearly Its density of low density polyethylene (LDPE) is 0.918g/cm3, melt index (MI) 0.1g/10min, fusing point is 121 DEG C.Acrylic resin Density is 0.90g/cm3, fusing point is 167 DEG C, and melt index (MI) is 0.5g/10min.
Adhesive layer raw material: ethylene-vinyl acetate copolymer.VA content is 5%.Density is 0.935g/cm3, melt index It (MI) is 3g/10min, fusing point is 60 DEG C.
Adhesive layer raw material: with natural rubber mass parts for 100 parts, 40 parts of liquid natural rubber, 5 parts of naphthenic oil, paraffin 1 Part, 50 parts of acetone.
Antioxidant: substrate layer raw material gross mass 0.1%, the diphenylamines and double Lauryl Alcohol esters that mass ratio is 4:1.
Light stabilizer: substrate layer raw material gross mass 0.2%, septichen phenyl ester.
Preparation method includes:
(1) substrate layer raw material is poured into mixing kettle in proportion, is arranged 50 DEG C, respectively by antioxidant, light stabilizer by formula Ratio slowly pours into mixing kettle, until antioxidant and light stabilizer are absorbed by raw material completely, it is about 1 hour, spare.Pass through two material paths Adhesive layer and substrate layer raw material containing auxiliary agent are supplied to die head respectively, by die head by adhesive layer (10 μm), substrate layer (20 μ M) the compound casting film-forming of raw material obtains female substrate by cooling and shaping；Wherein, substrate layer cavity temperature is 230 DEG C；Adhesive layer chamber Channel temp is 70 DEG C；Chill-roll temperature is 5 DEG C in cooling and shaping, and chill roll surface temperature difference is no more than 0.1 DEG C.
(2) coating fluid (stirring 0.5 hour) is prepared by raw material proportioning；It is coated on female substrate and is formed after coating fluid is diluted Adhesive layer winds, cuts into required size up to co-extrusion application type protective glue band.
(3) performance test:
Embodiment 2
Substrate layer raw material: polypropylene and linear low density polyethylene, wherein polyacrylic mass percent is 50%.Linearly Its density of low density polyethylene (LDPE) is 0.921g/cm3, melt index (MI) 0.5g/10min, fusing point is 124 DEG C.Acrylic resin Density is 0.91g/cm3, fusing point is 168 DEG C, and melt index (MI) is 1g/10min.
Adhesive layer raw material: ethylene-vinyl acetate copolymer.VA content is 10%.Density is 0.940g/cm3, melt index It (MI) is 6g/10min, fusing point is 70 DEG C.
Adhesive layer raw material: with natural rubber mass parts for 100 parts, 40 parts of liquid natural rubber, 5 parts of naphthenic oil, paraffin 1 Part, 50 parts of acetone.
Antioxidant: substrate layer raw material gross mass 0.5%, mass ratio are the p-phenylenediamine and three monooctyl esters of 2:1.
Light stabilizer: substrate layer raw material gross mass 0.5%, three (1,2,2,6,6- pempidine base) phosphite esters.
Preparation method includes:
(1) substrate layer raw material is poured into mixing kettle in proportion, is arranged 50 DEG C, respectively by antioxidant, light stabilizer by formula Ratio slowly pours into mixing kettle, until antioxidant and light stabilizer are absorbed by raw material completely, it is about 1 hour, spare.Pass through two material paths Adhesive layer and substrate layer raw material are supplied to die head respectively, it is by die head that adhesive layer (15 μm), substrate layer (25 μm) raw material is compound Casting film-forming obtains female substrate by cooling and shaping；Wherein, substrate layer cavity temperature is 240 DEG C；Adhesive layer cavity temperature is 90 ℃；Chill-roll temperature is 10 DEG C in cooling and shaping, and chill roll surface temperature difference is no more than 0.1 DEG C.
(2) coating fluid (stirring 0.5 hour) is prepared by raw material proportioning；It is coated on female substrate and is formed after coating fluid is diluted Adhesive layer winds, cuts into required size up to co-extrusion application type protective glue band.
(3) performance test:
Embodiment 3
Substrate layer raw material: polypropylene and linear low density polyethylene, wherein polyacrylic mass percent is 70%.Linearly Its density of low density polyethylene (LDPE) is 0.935g/cm3, melt index (MI) 1.8g/10min, fusing point is 126 DEG C.Acrylic resin Density is 0.90g/cm3, fusing point is 170 DEG C, and melt index (MI) is 2g/10min.
Adhesive layer raw material: ethylene-vinyl acetate copolymer.VA content is 15%.Density is 0.947g/cm3, melt index It (MI) is 10g/10min, fusing point is 85 DEG C.
Adhesive layer raw material: with butadiene rubber mass parts for 100 parts, 50 parts of liquid cis butadiene, 15 parts of naphthenic oil, paraffin 5 Part, 100 parts of tetrahydrofuran.
Antioxidant: substrate layer raw material gross mass 0.3%, mass ratio be 3:1 2,6- di-tert-butyl-4-methy phenol and Thio-2 acid dibasic acid esters.
Light stabilizer: substrate layer raw material gross mass 1%, 2- (the tertiary phenyl of 2- hydroxyl -3,5- bis-) -5- chlorination benzo three Azoles.
Preparation method includes:
(1) substrate layer raw material is poured into mixing kettle in proportion, is arranged 50 DEG C, respectively by antioxidant, light stabilizer by formula Ratio slowly pours into mixing kettle, until antioxidant and light stabilizer are absorbed by raw material completely, it is about 1 hour, spare.Pass through two material paths Adhesive layer and substrate layer raw material are supplied to die head respectively, it is by die head that adhesive layer (25 μm), substrate layer (35 μm) raw material is compound Casting film-forming obtains female substrate by cooling and shaping；Wherein, substrate layer cavity temperature is 250 DEG C；Adhesive layer cavity temperature is 120℃；Chill-roll temperature is 15 DEG C in cooling and shaping, and chill roll surface temperature difference is no more than 0.1 DEG C.
(2) coating fluid (stirring 0.5 hour) is prepared by raw material proportioning；It is coated on female substrate and is formed after coating fluid is diluted Adhesive layer winds, cuts into required size up to co-extrusion application type protective glue band.
(3) performance test:

Claims (2)

1. a kind of co-extrusion application type protective glue band, including substrate layer, adhesive layer and adhesive layer, it is characterised in that:
Substrate layer raw material: polypropylene and linear low density polyethylene, wherein polyacrylic mass percent is 70%；It is linear low close Degree its density of polyethylene is 0.935g/cm3, melt index 1.8g/10min, fusing point is 126 DEG C；Acrylic resin density is 0.90g/cm3, fusing point is 170 DEG C, melt index 2g/10min；
Adhesive layer raw material: ethylene-vinyl acetate copolymer, VA content are 15%, density 0.947g/cm3, melt index is 10g/10min, fusing point are 85 DEG C；
Adhesive layer raw material: with butadiene rubber mass parts for 100 parts, 50 parts of liquid cis butadiene, 15 parts of naphthenic oil, 5 parts of paraffin, four 100 parts of hydrogen furans；
Antioxidant: substrate layer raw material gross mass 0.3%, mass ratio are 2, the 6- di-tert-butyl-4-methy phenol of 3:1 and thio Dipropyl acid diester；
Light stabilizer: substrate layer raw material gross mass 1%, 2- (the tertiary phenyl of 2- hydroxyl -3,5- bis-) -5- chlorination benzotriazole.
2. a kind of preparation method of co-extrusion application type protective glue band as described in claim 1, includes the following steps:
(1) substrate layer raw material is poured into mixing kettle in proportion, is arranged 50 DEG C, antioxidant, light stabilizer are pressed into formula rate respectively Mixing kettle is slowly poured into, until antioxidant and light stabilizer are absorbed by raw material completely, it is about 1 hour, spare；Distinguished by two material paths Adhesive layer and substrate layer raw material are supplied to die head, by die head by 25 μm of adhesive layers, 35 μm of compound casting film-formings of substrate layer raw material, Female substrate is obtained by cooling and shaping；Wherein, substrate layer cavity temperature is 250 DEG C；Adhesive layer cavity temperature is 120 DEG C；It is cooling Chill-roll temperature is 15 DEG C in sizing, and chill roll surface temperature difference is no more than 0.1 DEG C；
(2) coating fluid is prepared by raw material proportioning；It is coated on after coating fluid is diluted on female substrate and forms adhesive layer, winding, cutting At required size up to co-extrusion application type protective glue band.
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