CN106318252A - Coextruded coating-type protection adhesive tape and preparation method thereof - Google Patents

Coextruded coating-type protection adhesive tape and preparation method thereof Download PDF

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Publication number
CN106318252A
CN106318252A CN201610696787.9A CN201610696787A CN106318252A CN 106318252 A CN106318252 A CN 106318252A CN 201610696787 A CN201610696787 A CN 201610696787A CN 106318252 A CN106318252 A CN 106318252A
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Prior art keywords
adhesive tape
substrate layer
adhesive layer
rubber
type protection
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CN201610696787.9A
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CN106318252B (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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a coextruded coating-type protection adhesive tape and a preparation method thereof. The coextruded coating-type protection adhesive tape comprises a substrate layer, an adhesion layer and a bonding layer, the substrate layer is composed of polypropylene and linear low-density polyethylene, the adhesion layer is vinyl-ethylene acetate copolymer, and the bonding layer comprises rubber and tackifying resin. The preparation method includes: (1), supplying raw materials of the adhesion layer and the substrate layer to a mould head respectively through two material ways, performing compositing, casting, film forming on the raw materials of the adhesion layer and the substrate layer through the mould head, and cooling and shaping to obtain a mother substrate; (2), diluting coating liquid, coating the coating liquid on the mother substrate to form the bonding layer, and folding and cutting into needed size. The coextruded coating-type protection adhesive tape is proper in stripping strength, free of being difficult to strip due to increasing of the stripping strength as time goes and free of causing adhesive residue on the surfaces of parts due to pressure impact in the process of rolling and punching. The preparation method is simple and low in cost and has good application prospect.

Description

A kind of co-extrusion application type protection adhesive tape and preparation method thereof
Technical field
The invention belongs to auto-parts surface protection field, particularly to a kind of co-extrusion application type protection adhesive tape and system thereof Preparation Method.
Background technology
Auto-parts produce in preparation process relate to roll-in, punching press, cross cutting, wash, etching etc. is made.Spare and accessory parts Product, as a part for vehicle complete vehicle, requires that in processing procedure product face must not have scuffing, abrasion, watermark, mist shadow, dust etc. to lack Fall into.Generally use common PE in current domestic conventional manufacturing process, CPP is that base material is formed by acrylic resins of painting adhesive Thin film, as protection, is attached at product surface and prevents product surface in processing procedure from damage occur.
Require that surface protection tape has suitable peel strength as protection adhesive tape, on the one hand need to keep tolerance difference Use the bond properties of environment, on the other hand can readily peel off when completing surface protecting function, and require not pollute Spare and accessory parts surface, does not remain the vestige of protection adhesive tape 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-flatness defect such as bubble, flake in protection adhesive tape Or folds etc. produce hollow, impression on spare and accessory parts surface, scratch or the defect such as deformation.This requirement is along with internal vapor garage The development of industry becomes increasingly stricter, and after pasting protection adhesive tape on spare and accessory parts surface, after roll-in, punching press, spare and accessory parts wait until Mould required form, in the case of compression shock, owing to being affected by impact etc., protection adhesive tape bears extruding, so sometimes Cull can be produced, or owing to adhesive tape pastes residual bubble, the out-of-flatness brought because of tape surface bubble after bearing deformation Produce tape surface sometimes damaged, in turn result in spare and accessory parts surface and produce the defects such as scuffing, impression.
It should be noted that protection adhesive tape generally supplies with web-like, tape thickness is uniform, and adhesive is evenly distributed in glue Band inner face.Current protection adhesive tape type mainly has composite co-extruding adhesive tape, reaches glutinous by tackifying resin compound on base material and covers Effect；Another kind is that binder resin can be divided into again acrylic resin, emulsion-type by being coated with binder resin formation on base material Acrylic acid, rubber three types.
As it has been described above, auto-parts surface protection tape is required for full in membrane material characteristic and manufacturing process two aspect Foot, proposes a lot of schemes for this.As for auto-parts surface protection tape, acrylic resin type adhesive tape is excellent because of it Weather-proof and cementability and be widely used, there is also some obvious defects, as peel strength can uprise over time, very simultaneously To finally occurring that adhesive tape removes difficulty.In experience high temperature or impact process, easily occur that glue-line cohesional failure causes degumming, And then pollute by protection surface.Rubber-type protection adhesive tape has and good pastes performance, all has the peel strength of various base materials Outstanding performance, stripping performance is stable simultaneously.It addition, punching press, nipping process improve common protection adhesive tape cull as improving Problem, it is proposed that increase adhesive cohesiveness and base material does pretreatment and increases the work of cohesive force.And then, using protection glue After band is attached to spare and accessory parts surface, implement punching press, roll-in, water mill, cut-out processing raising protective capability.But various scheme is all respectively arranged with The chief, does not finds not only to possess and excellent pastes performance, but also the perfect relevant protection adhesive tape meeting spare and accessory parts processing procedure.
Summary of the invention
The technical problem to be solved is to provide a kind of co-extrusion application type protection adhesive tape and preparation method thereof, this guarantor Retaining tape overcomes because the small technology pasting out-of-flatness or cull and cause spare and accessory parts surface to produce pollution or impression is asked Topic.
A kind of co-extrusion application type protection adhesive tape of the present invention, including substrate layer, adhesive layer and adhesive layer, described substrate layer by Polypropylene and linear low density polyethylene composition；Described adhesive layer is ethylene-vinyl acetate copolymer；Described adhesive layer includes rubber Glue and tackifying resin.
In described substrate layer, polyacrylic mass percent is 30-70%.
The thickness of described substrate layer is 10-25 μm.
Described 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 described 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.Owing to linear low density polyethylene has a short-side chain, simultaneously with polypropene blended after play toughness reinforcing Effect, higher anti-stretches intensity, penetration-resistant, tear resistance and percentage elongation to make protection adhesive tape have.And acrylic resin Need suitable fusing point, softening point, toughness, the transparency, impact strength.
Described ethylene-vinyl acetate copolymer VA content is 5%-15%, and density is 0.935-0.947g/cm3, melted finger Number MI is 3-10g/10min, and fusing point is 60-87 DEG C.Ethylene-vinyl acetate copolymer is by ethylene and two kinds of lists of vinyl acetate A kind of thermoplastic resin obtained by body copolymerization, its character is relevant with the content of its vinylacetate (VA), along with VA content increases, Light transmittance raises, and the pliability of material strengthens, and adhesive property increases the most therewith, but increasing of VA group also results in resin simultaneously The performances such as the degree of crystallinity of itself, mechanical strength, heat distortion temperature reduce.So that reach good between substrate layer and adhesive layer Bonding be combined, suitable elastic modelling quantity and VA value are necessary.
The thickness of described adhesive layer is 10-25 μm.
Coating on female base material is needed to form adhesive layer in order to realize protection adhesive tape of the present invention.
Consisting of of described adhesive layer: be 100 parts with rubber quality part, tackifying resin 40-140 part, naphthenic oil 5-15 part, Paraffin 1-5 part, solvent 50-100 part.
In order to reach bonding effect of the present invention, it is necessary to add tackifying resin, it is necessary that its effect is to confer to pressure sensitive adhesive Tack and bonding force, research shows, when tackifying resin exceedes a certain amount of, then forms biphase dispersion, rubber with rubber For continuous phase, give the cohesive strength that pressure sensitive adhesive is enough；Tackifying resin and a small amount of low molecule rubber are dispersion phase, at gluing interface Form a viscous layer the thinnest, at External Force Acting, VISCOUS FLOW directly can occur, moisten by maxxaedium so that initial bonding strength increases Greatly.When tackifying resin is suitable with the ratio of rubber tackifying resin can be well dispersed in rubber mutually in, at this moment initial bonding strength reaches Maximum, performance is optimal；If resin demand is excessive, there is phase in version drastically, make resin-phase become continuous phase and rubber phase transformation For dispersion phase, glue-line just loses initial bonding strength hydraulic performance decline.
Described rubber is natural rubber, butadiene-styrene rubber, Oppanol, cis-1,4-polyisoprene rubber, suitable fourth One or more in rubber, styrene-butadiene latex；Tackifying resin is LNBR, liquid isoprene rubber, liquid second third One or several in rubber, liquid natural rubber, liquid propene acid esters rubber, liquid polyisobutene rubber, liquid cis butadiene Kind；Solvent is high rate of volatilization solvent acetone, ethyl acetate, oxolane, 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 in ether, dipropylene glycol methyl ether, propylene glycol monomethyl ether, Ketohexamethylene.
Described substrate layer, adhesive layer and adhesive layer are also added with the antioxygen of substrate layer raw material gross mass 0.1%-0.5% Agent and/or the light stabilizer of substrate layer raw material gross mass 0.1%-2%.
Owing to linear low density polyethylene of the present invention, ethylene-vinyl acetate copolymer melt temperature are relatively low, and Containing tertiary hydrogen class active hydrogen in two kinds of polymer.At heat, light or the work of oxygen during compound extruded and during normal use Under with, the chemical bond of organic molecule ruptures, 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 cause a series of free chain reaction, leads Cause structure and the character generation fundamental change of organic compound, and then affect protected surface, need to add appropriate metrology The free radical that antioxidant elimination produces, or promote the decomposition of hydroperoxides, stop the carrying out of chain reaction.
Described antioxidant is made up of primary antioxidant and auxiliary antioxidant；Wherein, primary antioxidant is aromatic amine antioxidant, is subject to Resistance phenolic antioxidant in one or both；Auxiliary antioxidant is thioether class or organic phosphorus compound.
The mass ratio of described primary antioxidant and auxiliary anti-oxidant is 4:1-2:1.
Described aromatic amine antioxidant can be the compounds such as diphenylamines, p-phenylenediamine and dihydroquinoline and derivant thereof or Polymer.
Described Hinered phenols antioxidant can be 2,6-di-tert-butyl-4-methy phenol, double (3,5-di-t-butyl-4-hydroxyls Base phenyl) thioether, four (β-(3,5-di-tert-butyl-hydroxy phenyl) propanoic acid) pentaerythritol ester etc..
Described auxiliary antioxidant can be thio-2 acid dibasic acid esters, double Lauryl Alcohol ester, double ten four carbon alcohols esters, double 18 Carbon alcohol ester, three monooctyl esters, three the last of the ten Heavenly stems ester, three (Lauryl Alcohol) ester, three (16 carbon alcohol) ester, phosphorous acid esters etc..
Meanwhile, unescapable meeting in process and transportation is used to receive the radiation of ultraviolet light and then right at protection adhesive tape Protection adhesive tape produces photoaging, decomposition, causes protection tape performance to decline, and further impact is by the quality in protection face.In order to Such issues that overcome need to add the light stabilizer of appropriate metrology at adhesive layer and substrate layer.It can shield or absorb the energy of ultraviolet Amount, quenching singlet oxygen and hydroperoxide decomposition is become the functions such as inert matter, make high molecular polymer in the radiation of light Under, can get rid of or slow down photochemical reaction probability, stoping or postpone the process of photoaging, thus reach to extend high molecular polymerization The purpose in Tetramune service life.
Described light stabilizer can be oxybenzoic acid phenyl ester, 2-(2-hydroxy-5-methyl base phenyl) BTA, 2,4 dihydroxyl benzophenone, ESCALOL 567, Octabenzone, 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 ester, 4 benzoyloxy 2,2,6,6 tetramethyl piperidine, 2,4,6- Three (2 ' n-butoxyphenyl)-1,3,5-triazine etc..
The preparation method of a kind of application type protection adhesive tape of the present invention, comprises the steps:
(1) by Liang Liao road respectively to die head supply adhesive layer and substrate layer raw material, by die head by adhesive layer, substrate layer Raw material is combined casting film-forming, obtains female base material through cooling and shaping；
(2) will coating fluid dilute after coat and on female base material, form adhesive layer, rolling, cut into required size and i.e. obtain co-extrusion Application type protection adhesive tape.
Using curtain coating coextru-lamination moulding process, substrate layer tract temperature is 230-250 DEG C；Adhesive layer and adhesive layer tract Temperature is 70-120 DEG C；In cooling and shaping, chill-roll temperature is 0-30 DEG C, and chill roll surface temperature difference is less than 0.1 DEG C.
Beneficial effect
Peel strength of the present invention is suitable, and will not As time goes on be peeling intensity and rise and be difficult to peel off, will not Because compression shock causes spare and accessory parts surface cull in roll-in, punching press processing procedure；Preparation method is simple, low cost, has good Application prospect.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention Rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, people in the art The present invention can be made various changes or modifications by member, and these equivalent form of values fall within the application appended claims equally and limited Scope.
Embodiment 1
Substrate layer raw material: polypropylene and linear low density polyethylene, the most polyacrylic mass percent is 30%.Linearly Its density of Low Density Polyethylene 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 (MI) being 3g/10min, fusing point is 60 DEG C.
Adhesive layer raw material: be 100 parts with natural rubber mass parts, liquid natural rubber 40 parts, naphthenic oil 5 parts, paraffin 1 Part, 50 parts of acetone.
Antioxidant: substrate layer raw material gross mass 0.1%, mass ratio is the diphenylamines of 4:1 and double Lauryl Alcohol ester.
Light stabilizer: substrate layer raw material gross mass 0.2%, oxybenzoic acid phenyl ester.
Preparation method includes:
(1) pour substrate layer raw material into mixing kettle in proportion, arrange 50 DEG C, respectively antioxidant, light stabilizer are pressed formula Ratio slowly pours mixing kettle into, until antioxidant and light stabilizer are absorbed by raw material completely, about 1 hour, standby.By Liang Liao road Respectively to die head supply adhesive layer and the substrate layer raw material containing auxiliary agent, by die head by adhesive layer (10 μm), substrate layer (20 μ M) raw material is combined casting film-forming, obtains female base material through cooling and shaping；Wherein, substrate layer tract temperature is 230 DEG C；Adhesive layer and Adhesive layer tract temperature is 70 DEG C；In cooling and shaping, chill-roll temperature is 5 DEG C, and chill roll surface temperature difference is less than 0.1 DEG C.
(2) by proportioning raw materials preparation coating fluid (stirring 0.5 hour)；Coat after coating fluid is diluted and formed on female base material Adhesive layer, rolling, cut into required size i.e. obtain co-extrusion application type protection adhesive tape.
(3) performance test:
Embodiment 2
Substrate layer raw material: polypropylene and linear low density polyethylene, the most polyacrylic mass percent is 50%.Linearly Its density of Low Density Polyethylene 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 (MI) being 6g/10min, fusing point is 70 DEG C.
Adhesive layer raw material: be 100 parts with natural rubber mass parts, liquid natural rubber 40 parts, naphthenic oil 5 parts, paraffin 1 Part, 50 parts of acetone.
Antioxidant: substrate layer raw material gross mass 0.5%, mass ratio is 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 ester.
Preparation method includes:
(1) pour substrate layer raw material into mixing kettle in proportion, arrange 50 DEG C, respectively antioxidant, light stabilizer are pressed formula Ratio slowly pours mixing kettle into, until antioxidant and light stabilizer are absorbed by raw material completely, about 1 hour, standby.By Liang Liao road Respectively to die head supply adhesive layer and substrate layer raw material, by die head, adhesive layer (15 μm), substrate layer (25 μm) raw material are combined Casting film-forming, obtains female base material through cooling and shaping；Wherein, substrate layer tract temperature is 240 DEG C；Adhesive layer and adhesive layer tract Temperature is 90 DEG C；In cooling and shaping, chill-roll temperature is 10 DEG C, and chill roll surface temperature difference is less than 0.1 DEG C.
(2) by proportioning raw materials preparation coating fluid (stirring 0.5 hour)；Coat after coating fluid is diluted and formed on female base material Adhesive layer, rolling, cut into required size i.e. obtain co-extrusion application type protection adhesive tape.
(3) performance test:
Embodiment 3
Substrate layer raw material: polypropylene and linear low density polyethylene, the most polyacrylic mass percent is 70%.Linearly Its density of Low Density Polyethylene 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 (MI) being 10g/10min, fusing point is 85 DEG C.
Adhesive layer raw material: be 100 parts with butadiene rubber mass parts, liquid cis butadiene 50 parts, naphthenic oil 15 parts, paraffin 5 Part, oxolane 100 parts.
Antioxidant: substrate layer raw material gross mass 0.3%, mass ratio is the 2 of 3:1,6-di-tert-butyl-4-methy phenol and Thio-2 acid dibasic acid esters.
Light stabilizer: substrate layer raw material gross mass 1%, 2-(2-hydroxyl-3, the tertiary phenyl of 5-bis-)-5-chlorination benzo three Azoles.
Preparation method includes:
(1) pour substrate layer raw material into mixing kettle in proportion, arrange 50 DEG C, respectively antioxidant, light stabilizer are pressed formula Ratio slowly pours mixing kettle into, until antioxidant and light stabilizer are absorbed by raw material completely, about 1 hour, standby.By Liang Liao road Respectively to die head supply adhesive layer and substrate layer raw material, by die head, adhesive layer (25 μm), substrate layer (35 μm) raw material are combined Casting film-forming, obtains female base material through cooling and shaping；Wherein, substrate layer tract temperature is 250 DEG C；Adhesive layer and adhesive layer tract Temperature is 120 DEG C；In cooling and shaping, chill-roll temperature is 15 DEG C, and chill roll surface temperature difference is less than 0.1 DEG C.
(2) by proportioning raw materials preparation coating fluid (stirring 0.5 hour)；Coat after coating fluid is diluted and formed on female base material Adhesive layer, rolling, cut into required size i.e. obtain co-extrusion application type protection adhesive tape.
(3) performance test:

Claims (10)

1. a co-extrusion application type protection adhesive tape, including substrate layer, adhesive layer and adhesive layer, it is characterised in that: described substrate layer It is made up of polypropylene and linear low density polyethylene；Described adhesive layer is ethylene-vinyl acetate copolymer；Described adhesive layer includes Rubber and tackifying resin.
A kind of co-extrusion application type protection adhesive tape the most according to claim 1, it is characterised in that: polypropylene in described substrate layer Mass percent be 30-70%.
A kind of co-extrusion application type protection adhesive tape the most according to claim 1, it is characterised in that: described polyacrylic density is 0.90-0.91g/cm3, fusing point is 167-170 DEG C, and melt index MI is 0.5-2g/10min；Described linear low density polyethylene Density be 0.918～0.935g/cm3, fusing point is 121-127 DEG C, and melt index MI is 0.1-1.9g/10min.
A kind of co-extrusion application type protection adhesive tape the most according to claim 1, it is characterised in that: described ethene-vinyl acetate Copolymer VA content is 5%-15%, and density is 0.935-0.947g/cm3, melt index MI is 3-10g/10min, and fusing point is 60-87℃。
A kind of co-extrusion application type protection adhesive tape the most according to claim 1, it is characterised in that: the composition of described adhesive layer For: it is 100 parts with rubber quality part, tackifying resin 40-140 part, naphthenic oil 5-15 part, paraffin 1-5 part, solvent 50-100 part.
A kind of co-extrusion application type protection adhesive tape the most according to claim 5, it is characterised in that: described rubber is natural rubber One or several in glue, butadiene-styrene rubber, Oppanol, cis-1,4-polyisoprene rubber, butadiene rubber, styrene-butadiene latex Kind；Tackifying resin is LNBR, liquid isoprene rubber, Liquid Ethylene Propylene Methylene, liquid natural rubber, liquid propene One or more in acid esters rubber, liquid polyisobutene rubber, liquid cis butadiene；Solvent is acetone, ethyl acetate, tetrahydrochysene Furan, butanone, methyl acetate, n-butyl acetate, isobutyl acetate, toluene, dimethylbenzene, pentyl acetate, propylene glycol monomethyl ether, the third two One or more in alcohol butyl ether, dipropylene glycol methyl ether, propylene glycol monomethyl ether, Ketohexamethylene.
A kind of co-extrusion application type protection adhesive tape the most according to claim 1, it is characterised in that: described substrate layer, adhesive layer With antioxidant and/or the substrate layer raw material gross mass being also added with substrate layer raw material gross mass 0.1%-0.5% in adhesive layer The light stabilizer of 0.1%-2%.
A kind of co-extrusion application type protection adhesive tape the most according to claim 7, it is characterised in that: described antioxidant is by main antioxygen Agent and auxiliary antioxidant composition；Wherein, the one during primary antioxidant is aromatic amine antioxidant, Hinered phenols antioxidant or two Kind.
9. a preparation method for co-extrusion application type as claimed in claim 1 protection adhesive tape, comprises the steps:
(1) by Liang Liao road respectively to die head supply adhesive layer and substrate layer raw material, by die head by adhesive layer, substrate layer raw material Compound casting film-forming, obtains female base material through cooling and shaping；
(2) will coating fluid dilute after coat and on female base material, form adhesive layer, rolling, cut into required size and i.e. obtain co-extrusion coating Type protection adhesive tape.
The preparation method of a kind of co-extrusion application type the most according to claim 9 protection adhesive tape, it is characterised in that: substrate layer Tract temperature is 230-250 DEG C；Adhesive layer and adhesive layer tract temperature are 70-120 DEG C；In cooling and shaping, chill-roll temperature is 0- 30 DEG C, chill roll surface temperature difference is less than 0.1 DEG C.
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CN109423229A (en) * 2017-06-20 2019-03-05 上海海优威新材料股份有限公司 Multi-layered bonded protective film and preparation method thereof
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CN115746726A (en) * 2022-11-28 2023-03-07 东莞澳中新材料科技股份有限公司 Electrolyte-resistant expansion adhesive tape and co-extrusion process for preparing same

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