CN107142032A - Adhesive protecting film - Google Patents
Adhesive protecting film Download PDFInfo
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- CN107142032A CN107142032A CN201710305106.6A CN201710305106A CN107142032A CN 107142032 A CN107142032 A CN 107142032A CN 201710305106 A CN201710305106 A CN 201710305106A CN 107142032 A CN107142032 A CN 107142032A
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- 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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
- C09J153/025—Vinyl aromatic monomers and conjugated dienes modified
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- 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
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
-
- 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
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/06—Polyethene
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- 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
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/10—Homopolymers or copolymers of propene
- C09J123/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
-
- 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
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
- C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a kind of adhesive protecting film.The diaphragm includes substrate layer and the adhesion coating on substrate layer; by weight percentage; the material of adhesion coating includes 50~90% component A and 10~50% component B; wherein component A is SEBS thermoplastic elastomer (TPE)s, and component B is the one or more in the first random polypropylene, the first low density polyethylene (LDPE) and TPO thermoplastic elastomer (TPE)s.The diaphragm cohesive and fissility are good, and adhesion strength changes smaller with temperature and time, and parent roll uncoiling power changes over time, easy uncoiling also small with temperature change.In addition, the adhesive protecting film that the present invention is provided also has the advantages that low fisheye and cleanliness factor are high, is particularly suitable for using as the surface protection film of diffusion barrier.
Description
Technical field
The present invention relates to organic film technical field, in particular to a kind of adhesive protecting film.
Background technology
With IT, the fast development of electrical type industry and the exploitation of many emerging high-tech applications, to electronic product
Diaphragm demand it is increasing.In recent years, the ultrathin display such as liquid crystal display is often used as PC, ultra-thin television
Deng display device, liquid crystal display is mainly made up of liquid crystal panel and backlight module.In general, backlight module by light source,
Reflectance coating, light guide plate, upper diffusion barrier, upper brightness enhancement film, lower brightness enhancement film, lower diffusion barrier composition.And the effect that diffusion barrier is primarily served
It is that spot light or line source are changed into uniform area source, in order to improve the positive brightness of liquid crystal display.In order to
Processing and carry when prevent diffusion barrier surface spot or scuffing, it is necessary to carry out surface protection to it.Protected as diffusion barrier surface
Cuticula, it is desirable to which diaphragm has appropriate adhesion strength.And after diffusion barrier laminating diaphragm can harvest parent roll, this claimed film by
Born to the effect of rolling tightly after extruding, film will not be produced and the situation such as be not easily stripped.After claimed film is peeled off simultaneously, it is impossible to pollute
Adherend surface.Also have very strict requirement to film appearance, it is impossible to because of the convex portion defect such as fisheye in surface protection film or
Volume wrinkle etc. and hollow hole or deformation etc. are produced on adherend and beats trace defect.
All the time, diffusion barrier surface protection film uses two types mostly：
(1) gluing diaphragm, it has adhesion coating, and adhesion coating typically coating is low-molecular-weight resin, adhesion strength scope
Greatly, it is widely used.But such a diaphragm is for when manufacturing, it is necessary to use organic solvent, this processing procedure is non-environmental protection processing procedure, meeting
Produce peculiar smell, and must secondary baking process and could remove organic solvent, therefore cause the increase of cost.In addition, gluing is protected
Film easily causes cull and dirty wound in optical model sheet micro-structure surface, and higher electrostatic is also easy to produce during dyestripping and makes the optical grade
When diaphragm is applied to backlight module, the problem of image quality is poor quality is had, causes product fraction defective to improve.
(2) adhesive protecting film.Because diffusion barrier surface has rough diffusion particle, cause diaphragm and diaphragm
Contact area it is smaller, therefore in order to provide suitably stable bonding force, diaphragm is usually the high mucous membrane of rubber-like, adhesion coating
Directly contacted with the surface of substrate layer.Generally there is problems with adhesive protecting film：Required uncoiling power compares during parent roll uncoiling
Greatly, if being taken care of for a long time in the form of film roll, uncoiling power can be caused gradually to increase, the fissility of film roll is not good, so as to can produce
The problem of raw operability is significantly reduced.And different type adhesive protecting film is when pasting diffusion barrier, the problem of also having other, such as
Adhesion strength is unstable and unequal, makes diffusion barrier and diaphragm adhesion loosely or bubble, fold occurs and glue dead phenomenon, or in fortune
There is a situation where to be exposed in high temperature in defeated, management process, and cause adhesion strength change very greatly, cause film can not tear open etc. and ask
Topic.
Based on above reason, it is necessary to provide one kind adhesion strength stabilization and solution under the conditions of long-term storage and temperature change
Roll up the less adhesive protecting film of power.
The content of the invention
It is a primary object of the present invention to provide a kind of adhesive protecting film, existed with solving adhesive protecting film of the prior art
Adhesion strength is unstable under the conditions of long-term storage and temperature change and the problem of too high uncoiling power.
To achieve these goals, according to an aspect of the invention, there is provided a kind of adhesive protecting film, it includes base material
Layer and the adhesion coating on substrate layer, by weight percentage, the material of adhesion coating include 50~90% component A and 10~
50% component B, wherein component A are SEBS thermoplastic elastomer (TPE)s, and component B is the first random polypropylene, the first low density polyethylene
One or more in alkene and TPO thermoplastic elastomer (TPE)s.
Further, by weight percentage, the material of adhesion coating includes 60~90% component A and 10~40% group
Divide B.
Further, the density of SEBS thermoplastic elastomer (TPE)s is 0.88~0.95g/cm3, melt index is 5~50g/
10min；Preferably, the density of the first random polypropylene is 0.90~0.92g/cm3, melt index is 3~30g/10min；It is excellent
Selection of land, the density of the first low density polyethylene (LDPE) is 0.915~0.960g/cm3, melt index is 3~30g/10min；Preferably,
The density of TPO thermoplastic elastomer (TPE)s is 0.83~0.95g/cm3, melt index is 3~30g/10min.
Further, substrate layer includes top layer and sandwich layer, and sandwich layer is located between top layer and adhesion coating.
Further, by weight, the material on top layer include 20~90 parts the first Ethylene-Propylene Block Copolymer and
10~80 parts of the second low density polyethylene (LDPE)；Preferably, by weight, the material on top layer includes 20~40 parts of the first second
Alkene-propylene-based block copolymer and 60~80 parts of the second low density polyethylene (LDPE).
Further, the density of the first Ethylene-Propylene Block Copolymer is 0.90~0.91g/cm3, melt index be 3~
30g/10min；Preferably, the density of the second low density polyethylene (LDPE) is 0.915~0.930g/cm3, melt index is 3~30g/
10min。
Further, by weight, the material on top layer also includes 2~6 parts of anti-sticking particle；Preferably, anti-sticking particle
Particle diameter be 5~10 μm；Preferably, anti-sticking particle is silica dioxide granule, silicone particles, one kind in acid amides particle or many
Kind.
Further, by weight, the material of sandwich layer include 50~90 parts the second Ethylene-Propylene Block Copolymer and
10~50 parts of the second random polypropylene；Preferably, the material of sandwich layer includes 60~80 parts of the second ethylene-propylene blocks copolymerization
Thing and 20~40 parts of the second random polypropylene.
Further, the density of the second Ethylene-Propylene Block Copolymer is 0.90~0.91g/cm3, relative molecular weight is
50000~300000, melt index is 3~30g/10min；Preferably, the density of the second random polypropylene be 0.90~
0.91g/cm3, relative molecular weight is 30000~200000, and melt index model is 3~30g/10min.
Further, the thickness on top layer is 4~8 μm；It is preferred that the thickness of sandwich layer is 24~32 μm；It is preferred that the thickness of adhesion coating
For 4~8 μm.
Apply the technical scheme of the present invention there is provided a kind of adhesive protecting film, it includes substrate layer and on substrate layer
Adhesion coating, by weight percentage, the material of adhesion coating includes 50~90% component A and 10~50% component B, wherein
Component A is SEBS thermoplastic elastomer (TPE)s, and component B is the first random polypropylene, the first low density polyethylene (LDPE) and TPO thermoplastic elastics
One or more in body.The diaphragm cohesive and fissility are good, and adhesion strength changes smaller with temperature and time, and parent roll solution
Volume power changes over time, easy uncoiling also small with temperature change.In addition, the adhesive protecting film that the present invention is provided also has low crystalline substance
Point and the high advantage of cleanliness factor, are particularly suitable for using as the surface protection film of diffusion barrier.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.The present invention is described in detail below in conjunction with embodiment.
As described by background section, adhesive protecting film of the prior art is in long-term storage and temperature change bar
Adhesion strength is unstable under part and uncoiling power is too high.
In order to solve this problem, the invention provides a kind of adhesive protecting film, including substrate layer and on substrate layer
Adhesion coating, by weight percentage, the material of adhesion coating includes 50~90% component A and 10~50% component B, wherein
Component A is SEBS thermoplastic elastomer (TPE)s, and component B is the first random polypropylene, the first low density polyethylene (LDPE) and TPO thermoplastic elastics
One or more in body.
In the above-mentioned adhesive protecting film that the present invention is provided, including substrate layer and the adhesion coating on substrate layer.Adhesion coating
The adhesiveness of diaphragm is ensure that, substrate layer provides mechanical property for diaphragm.Specifically, in above-mentioned adhesion coating, component A is
SEBS thermoplastic elastomer (TPE)s, it has preferable heat resistance, both with plasticity, has high resiliency again；Component B is the first nothing
One or more in isotactic polypropylene, the first low density polyethylene (LDPE) and TPO thermoplastic elastomer (TPE)s, these three polymer have preferable
Pliability, and with the higher transparency and self-cleaning property.Two class components it will be adhered above according to above-mentioned with magnitude relation formation
Layer, can significantly improve the adhesive performance of adhesive protecting film, make it have preferable cohesive and fissility, adhesion strength is with temperature
It is smaller with time change, and parent roll uncoiling power changes over time, easy uncoiling also small with temperature change.In addition, the present invention is carried
The adhesive protecting film of confession also has the advantages that low fisheye and cleanliness factor are high, is particularly suitable for making as the surface protection film of diffusion barrier
With.
In a preferred embodiment, by weight percentage, the material of adhesion coating includes 60~90% component A
With 10~40% component B.It will be controlled within the range, can further integrate each component with magnitude relation between two kinds of components
Performance, make adhesive protecting film have more preferably adhesive performance, and make the otherwise performance such as transparency more balance.
As long as it was previously stated, using above-mentioned material in adhesion coating, you can be effectively improved the adhesive performance of diaphragm.In one kind
In preferred embodiment, the density of SEBS thermoplastic elastomer (TPE)s is 0.88~0.950g/cm3, melt index is 5~50g/
10min.Such SEBS thermoplastic elastomers has more excellent heat resistance, while have more preferable plasticity and high resiliency concurrently,
The adhesion strength stability and easy uncoiling performance of diaphragm can be further improved as component A.Preferably, the first random polypropylene
Density be 0.90~0.92g/cm3, melt index is 3~30g/10min.Such random polypropylene has more preferable pliability
And the transparency, and resin cleannes are higher, and this is conducive to further improving adhesiveness, transparency and the automatically cleaning of diaphragm
Property.Preferably, the density of the first low density polyethylene (LDPE) is 0.915~0.960g/cm3, melt index is 3~30g/10min.Should
Class low density polyethylene (LDPE) property is more relatively soft, with good extensibility, chemical stability, processing characteristics, is used as adhesion coating
Component can further improve uncoiling, chemical stability and the processing characteristics of diaphragm.It is highly preferred that the first low density polyethylene
The relative molecular weight of alkene is 10000~100000.Preferably, the density of TPO thermoplastic elastomer (TPE)s is 0.83~0.95g/cm3,
Melt index is 3~30g/10min.Such TPO thermoplastic elastomer (TPE) molecular weight distribution is narrow, and crystallinity is low, the transparency and
Glossiness is more excellent, while preferable with other resin compatibles.
In above-mentioned adhesive protecting film, even if the effect of substrate layer provides mechanical property for diaphragm.In a kind of preferred reality
Apply in mode, substrate layer includes top layer and sandwich layer, sandwich layer is located between top layer and adhesion coating.With top layer and sandwich layer collectively as base
Material layer, in addition to it can accordingly provide more preferable mechanical property, top layer can also provide preferable filming performance.
In above-mentioned substrate layer, the material of top layer and sandwich layer can use the conventional material of diaphragm substrate layer.It is excellent in one kind
In the embodiment of choosing, by weight, the material on top layer includes 20~90 parts of the first Ethylene-Propylene Block Copolymer and 10
~80 parts of the second low density polyethylene (LDPE).The top layer of material formation has more preferable mechanical property, its intensity and hardness, elasticity
All more preferably.Preferably, by weight, the material on top layer includes 20~40 parts of the first Ethylene-Propylene Block Copolymer and 60
~80 parts of the second low density polyethylene (LDPE).This has more preferably mechanical property and filming performance with the top layer under magnitude relation.
In a preferred embodiment, the density of the first Ethylene-Propylene Block Copolymer is 0.90~0.91g/
cm3, melt index is 3~30g/10min.Performance in terms of the intensity of such block polypropylene, hardness, elasticity is more integrated.
Preferably, the density of the second low density polyethylene (LDPE) is 0.915~0.930g/cm3, melt index is 3~30g/10min.Such
The top layer that low density polyethylene (LDPE) and block polypropylene are cooperatively formed, using the teaching of the invention it is possible to provide more preferably mechanical property and filming performance, meanwhile,
The clean-up performance on top layer is more preferably.
In addition to the first block polypropylene and the second low density polyethylene (LDPE), in order to further improve the antistick characteristic on top layer,
In a preferred embodiment, by weight, the material on top layer also includes 2~6 parts of anti-sticking particle.Add the consumption
Anti-sticking particle, in addition to further improving the antistick characteristic on top layer, moreover it is possible to top layer and Global Macros film is kept higher transparent
Degree and low brilliant degree.Preferably, the particle diameter of anti-sticking particle is 5~10 μm；Preferably, anti-sticking particle includes but is not limited to silica
One or more in particle, silicone particles, acid amides particle.
The material of above-mentioned sandwich layer can also use the common used material in diaphragm substrate layer.In one kind preferred embodiment
In, by weight, the material of sandwich layer includes 50~90 parts of the second Ethylene-Propylene Block Copolymer and the second of 10~50 parts
Random polypropylene.Ethylene-Propylene Block Copolymer has more preferable mechanical property, its intensity and hardness, elasticity all more preferably, randomly
Strength of PP height and flexible, hardness is preferably and with preferable extensibility, and both materials are above-mentioned with magnitude relation
The sandwich layer of formation, the mechanical property of its each side is more preferably.It is highly preferred that the material of sandwich layer include 60~80 parts the second ethene-
Propylene-based block copolymer and 20~40% the second random polypropylene.
In a preferred embodiment, the density of the second Ethylene-Propylene Block Copolymer is 0.90~0.91g/
cm3, relative molecular weight is 50000~300000, and melt index is 3~30g/10min.The block polypropylene of the type is strong
Performance in terms of degree, hardness, elasticity is more balanced.Preferably, the density of the second random polypropylene is 0.90~0.91g/cm3,
Relative molecular weight is 30000~200000, and melt index model is 3~30g/10min.The random polypropylene intensity of the type is higher
And flexible, it is harder than low density polyethylene (LDPE), also it can slightly extend.Had using the sandwich layer of the material formation of the above-mentioned type more preferable
Mechanical property.
The thickness of above layers can be adjusted, and preferably skin depth accounts for the 10~20% of integral thickness, core layer thickness
The 60~80% of integral thickness are accounted for, adhesive layer thickness accounts for the 10~20% of integral thickness.The mechanics of diaphragm under the proportionate relationship
The performance of each side such as performance, adhesive performance, transparency is more comprehensive.In a preferred embodiment, the thickness on top layer
Spend for 4~8 μm；It is preferred that the thickness of sandwich layer is 24~32 μm；It is preferred that the thickness of adhesion coating is 4~8 μm.The thickness of each layer is so set
Degree, is capable of the property indices of further balanced protection film.
In a word, the adhesive protecting film that the present invention is provided, with uncoiling power is small, heatproof is good, easily tear easy sticker, without spies such as culls
Property.The adhesion strength of diffusion barrier of being fitted under normal temperature is 5~30gf/25mm, and winding is stored in natural environment, adhesion strength 5~
30gf/25mm, adhesion strength is smaller with environmental change.
The adhesive protecting film of the present invention, it is possible to use the conventional preparation method in this area is made, such as：In dustless car
Between using three-layer co-extruded casting technique production, and use supercritical nitrogen fluid delivery system, fisheye is reduced on source
Produce, while the equipment such as applied defect detector and β ray Thickness measuring instruments lacks to the outward appearance of film during procedure for producing
Fall into and thickness carry out online tracing detection, make film and meanwhile have that thickness is uniform, cleanliness factor is high, free from admixture, smooth in appearance, low crystalline substance
The good characteristics such as point.
The application is described in further detail below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Apply for scope claimed.
It is as follows for the performance test methods of diaphragm：
(1) thickness is tested
Using Ma Er calibrators, reference standard is GB/T6672.
(2) tensile strength, elongation at break test
Using the Mei Tesi MTS tensile testing machines in the U.S., reference standard is GB/T1040.3.
(3) peel test force (adhesion strength)
Instrument tensile testing machine is good for using section, reference standard is GB/T2792.
(4) light transmittance and mist degree test
Mist shadow instrument is transmitted using the AT-4725 of German BYK chemical companies, reference standard is GB/T2410.
(5) uncoiling power is tested
Instrument tensile testing machine is good for using section.
The technological process of production of diaphragm in following embodiment is as follows：By each layer by being heated after each group distribution ratio
Casting technique：Extruder extrusion-T-shaped mouth mold curtain coating-air knife-casting roller-chill roll-beta thickness gauge-cut slitter edge-
Defect detector-batch.
During melt curtain coating, the temperature of head is 230 DEG C in T-shaped mouth mold casting processes；Roller surface is cast by essence
Processing, stabilization of speed, casting roller temperature control is at 25 DEG C；Chill-roll temperature is controlled at 30 DEG C；There is air knife above casting roller
Device, there is vacuum box device below die head, and air knife blow pressure Power Control is 40%, and vacuum suction Power Control is 20%；Together
Time control molding head pumping power is 60%；Film is after chill roll, through the T-shaped mouth mold gap of beta thickness gauge auto-control, control
The mean error of film thickness is cast within 2%.Winding tension is adjusted according to thickness, speed of production of film etc. simultaneously, wound
Tension force is in 100N.
Embodiment 1
Adhesion coating carries out compounding by weight 90/10 proportioning with random polypropylene using SEBS thermoplastic elastomer (TPE)s and formed.
Wherein the density of random polypropylene is 0.90g/cm3, melt index is 6.0g/10min.The density of SEBS thermoplastic elastomer (TPE)s is
0.90g/cm3, melt index is 8.0g/10min.
Sandwich layer carries out compounding by weight 70/30 proportioning by block polypropylene and random polypropylene and formed.Block polypropylene
Density be 0.90g/cm3, melt index is 5.0g/10min.The density of random polypropylene is 0.905g/cm3, melt index is
7.0g/10min。
Top layer by low density polyethylene (LDPE), block polypropylene and anti-sticking master batch by weight 20/75/5 proportioning compounded and
Into.The density of low density polyethylene (LDPE) is 0.921g/cm3, melt index is 6.0g/10min.The density of block polypropylene is
0.90g/cm3, melt index is 5.0g/10min.Anti-sticking master batch is artificial synthetic silica particle, and its density is 0.910g/
cm3, melt index is 12.0g/10min, 5 μm of particle diameter.
Obtained diaphragm quantitative measurement such as table 1 (it should be noted that thickness is respectively each layer gross thickness, with
And top layer, sandwich layer, each thickness degree of adhesion coating, similarly hereinafter)：
Table 1
Embodiment 2
Adhesion coating compounded using SEBS thermoplastic elastomer (TPE)s and low density polyethylene (LDPE) by weight 60/40 proportioning and
Into.Wherein the density of SEBS thermoplastic elastomer (TPE)s is 0.89g/cm3, melt index is 5.0g/10min.Low density polyethylene (LDPE)
Density is 0.922g/cm3, melt index scope is 4.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 2：
Table 2
Embodiment 3
Adhesion coating is compounded using SEBS thermoplastic elastomer (TPE)s with TPO thermoplastic elastomer (TPE)s by weight 75/25 proportioning
Form.Wherein the density of TPO thermoplastic elastomer (TPE)s is 0.89g/cm3, melt index is 7.0g/10min.SEBS thermoplastic elastics
The density of body is 0.92g/cm3, melt index is 5.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 3：
Table 3
Embodiment 4
Adhesion coating carries out compounding by weight 90/10 proportioning with random polypropylene using SEBS thermoplastic elastomer (TPE)s and formed.
Wherein the density of random polypropylene is 0.92g/cm3, melt index is 30.0g/10min.The density of SEBS thermoplastic elastomer (TPE)s
For 0.95g/cm3, melt index is 5.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 4：
Table 4
Embodiment 5
Adhesion coating carries out compounding by weight 60/40 proportioning with random polypropylene using SEBS thermoplastic elastomer (TPE)s and formed.
Wherein the density of random polypropylene is 0.90g/cm3, melt index is 3.0g/10min.The density of SEBS thermoplastic elastomer (TPE)s is
0.88g/cm3, melt index is 50.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 5：
Table 5
Embodiment 6
Adhesion coating carries out compounding by weight 50/50 proportioning with random polypropylene using SEBS thermoplastic elastomer (TPE)s and formed.
Wherein the density of random polypropylene is 0.88g/cm3, melt index is 32.0g/10min.The density of SEBS thermoplastic elastomer (TPE)s
For 0.87g/cm3, melt index is 4.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 6：
Table 6
Embodiment 7
Adhesion coating compounded using SEBS thermoplastic elastomer (TPE)s and low density polyethylene (LDPE) by weight 90/10 proportioning and
Into.Wherein the density of SEBS thermoplastic elastomer (TPE)s is 0.88g/cm3, melt index is 5.0g/10min.Low density polyethylene (LDPE)
Density is 0.915g/cm3, melt index scope is 30g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 7：
Table 7
Embodiment 8
Adhesion coating compounded using SEBS thermoplastic elastomer (TPE)s and low density polyethylene (LDPE) by weight 50/50 proportioning and
Into.Wherein the density of SEBS thermoplastic elastomer (TPE)s is 0.95g/cm3, melt index is 50.0g/10min.Low density polyethylene (LDPE)
Density is 0.96g/cm3, melt index scope is 3g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 8：
Table 8
Embodiment 9
Adhesion coating compounded using SEBS thermoplastic elastomer (TPE)s and low density polyethylene (LDPE) by weight 50/50 proportioning and
Into.Wherein the density of SEBS thermoplastic elastomer (TPE)s is 0.87g/cm3, melt index is 4.0g/10min.Low density polyethylene (LDPE)
Density is 0.90g/cm3, melt index scope is 32g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 9：
Table 9
Embodiment 10
Adhesion coating is compounded using SEBS thermoplastic elastomer (TPE)s with TPO thermoplastic elastomer (TPE)s by weight 60/40 proportioning
Form.Wherein the density of TPO thermoplastic elastomer (TPE)s is 0.95g/cm3, melt index is 3g/10min.SEBS thermoplastic elastomer (TPE)s
Density be 0.88g/cm3, melt index is 5.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 10：
Table 10
Embodiment 11
Adhesion coating is compounded using SEBS thermoplastic elastomer (TPE)s with TPO thermoplastic elastomer (TPE)s by weight 50/50 proportioning
Form.Wherein the density of TPO thermoplastic elastomer (TPE)s is 0.83g/cm3, melt index is 10g/10min.SEBS thermoplastic elastics
The density of body is 0.95g/cm3, melt index is 8.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 11：
Table 11
Embodiment 12
Adhesion coating is compounded using SEBS thermoplastic elastomer (TPE)s with TPO thermoplastic elastomer (TPE)s by weight 50/50 proportioning
Form.Wherein the density of TPO thermoplastic elastomer (TPE)s is 0.80g/cm3, melt index is 11g/10min.SEBS thermoplastic elastics
The density of body is 0.96g/cm3, melt index is 4.0g/10min.
Core material be the same as Example 1；
Skin-material be the same as Example 1；
Obtained diaphragm quantitative measurement such as table 12：
Table 12
Embodiment 13
The material be the same as Example 1 of adhesion coating；
Sandwich layer carries out compounding by weight 60/40 proportioning by block polypropylene and random polypropylene and formed.Block polypropylene
Density be 0.91g/cm3, melt index is 3g/10min.The density of random polypropylene is 0.90g/cm3, melt index is
30g/10min。
Top layer by low density polyethylene (LDPE), Ethylene-Propylene Block Copolymer and anti-sticking master batch by weight 34/60/6 match into
Row compounding is formed.The density of low density polyethylene (LDPE) is 0.915g/cm3, melt index is 30g/10min.Ethylene-propylene blocks are total to
The density of polymers is 0.91g/cm3, melt index is 10g/10min.The anti-sticking artificial synthesized silica density of master batch is
0.910g/cm3, melt index is 12.0g/10min, 10 μm of particle diameter.
Obtained diaphragm quantitative measurement such as table 13：
Table 13
Embodiment 14
The material be the same as Example 1 of adhesion coating；
Sandwich layer carries out compounding by weight 80/20 proportioning by block polypropylene and random polypropylene and formed.Block polypropylene
Density be 0.90g/cm3, melt index is 30g/10min.The density of random polypropylene is 0.91g/cm3, melt index is
3g/10min。
Top layer by low density polyethylene (LDPE), block polypropylene and anti-sticking master batch by weight 40/58/2 proportioning compounded and
Into.The density of low density polyethylene (LDPE) is 0.930g/cm3, melt index is 3g/10min.The density of block polypropylene is 0.90g/
cm3, melt index is 3g/10min.The anti-sticking artificial synthesized silica density of master batch is 0.910g/cm3, melt index is
12.0g/10min, 10 μm of particle diameter.
Obtained diaphragm quantitative measurement such as table 14：
Table 14
Embodiment 15
The material be the same as Example 1 of adhesion coating；
Sandwich layer carries out compounding by weight 90/10 proportioning by block polypropylene and random polypropylene and formed.Block polypropylene
Density be 0.89g/cm3, melt index is 11g/10min.The density of random polypropylene is 0.89g/cm3, melt index is
2g/10min。
Top layer carries out compounding by weight 90/10 proportioning by low density polyethylene (LDPE) and block polypropylene and formed.Low-density is gathered
The density of ethene is 0.90g/cm3, melt index is 2g/10min.The density of block polypropylene is 0.92g/cm3, melt index
For 11g/10min.
Obtained diaphragm quantitative measurement such as table 15：
Table 15
Comparative example 1
Adhesion coating carries out compounding by weight 40/60 proportioning with random polypropylene using SEBS thermoplastic elastomer (TPE)s and formed.
Wherein the density of random polypropylene is 0.90g/cm3, melt index is 6.0g/10min.The density of SEBS thermoplastic elastomer (TPE)s is
0.90g/cm3, melt index is 8.0g/10min.
Sandwich layer carries out compounding by weight 40/60 proportioning by block polypropylene and random polypropylene and formed.Block polypropylene
Density be 0.90g/cm3, melt index is 5.0g/10min.The density of random polypropylene is 0.905g/cm3, melt index is
7.0g/10min。
Top layer carries out compounding by weight 40/60 proportioning by low density polyethylene (LDPE) and block polypropylene and formed.Low-density is gathered
The density of ethene is 0.921g/cm3, melt index is 6.0g/10min.The density of block polypropylene is 0.90g/cm3, melting refers to
Number is 5.0g/10min.
Obtained diaphragm quantitative measurement such as table 16：
Table 16
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
The adhesive protecting film provided in the embodiment of the present invention 1 to 15 is respectively provided with preferably adhesion strength and relatively low uncoiling power,
And good mechanical properties, and with preferable transparency, relatively low mist degree and higher clean-up performance.Especially, by each layer
After the performance such as component proportion and density of material, melt index is carried out preferably, the adhesion strength normal temperature adhesion strength of diaphragm is more suitable,
In 5~35gf/25mm, and through when 3d, 7d after, adhesion strength change it is smaller, show that its adhesion strength stability is more preferable；And diaphragm
Uncoiling power is smaller, in 45~95gf/25mm, and combination property is performed better.
In a word, the adhesive protecting film cohesive that provides of the present invention and fissility are good, adhesion strength with temperature and time change compared with
It is small, and parent roll uncoiling power changes over time, easy uncoiling also small with temperature change.In addition, the self-adhesion protection that the present invention is provided
Film also has the advantages that low fisheye and cleanliness factor are high, is particularly suitable for using as the surface protection film of diffusion barrier.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of adhesive protecting film, it is characterised in that the adhesion coating including substrate layer and on the substrate layer, by weight hundred
Divide than meter, the material of the adhesion coating includes 50~90% component A and 10~50% component B, wherein the component A is
SEBS thermoplastic elastomer (TPE)s, the component B is the first random polypropylene, the first low density polyethylene (LDPE) and TPO thermoplastic elastomer (TPE)s
In one or more.
2. adhesive protecting film according to claim 1, it is characterised in that by weight percentage, the material of the adhesion coating
Material includes 60~90% component A and 10~40% component B.
3. adhesive protecting film according to claim 1 or 2, it is characterised in that the density of the SEBS thermoplastic elastomer (TPE)s
For 0.88~0.95g/cm3, melt index is 5~50g/10min；
Preferably, the density of first random polypropylene is 0.90~0.92g/cm3, melt index is 3~30g/10min；
Preferably, the density of first low density polyethylene (LDPE) is 0.915~0.960g/cm3, melt index is 3~30g/
10min；
Preferably, the density of the TPO thermoplastic elastomer (TPE)s is 0.83~0.95g/cm3, melt index is 3~30g/10min.
4. adhesive protecting film according to claim 1 or 2, it is characterised in that the substrate layer includes top layer and sandwich layer, institute
Sandwich layer is stated to be located between the top layer and the adhesion coating.
5. adhesive protecting film according to claim 4, it is characterised in that by weight, the material on the top layer includes
20~90 parts of the first Ethylene-Propylene Block Copolymer and 10~80 parts of the second low density polyethylene (LDPE)；Preferably, by weight
Meter, the material on the top layer includes 20~40 parts of first Ethylene-Propylene Block Copolymer and described the of 60~80 parts
Two low density polyethylene (LDPE)s.
6. adhesive protecting film according to claim 5, it is characterised in that first Ethylene-Propylene Block Copolymer
Density is 0.90~0.91g/cm3, melt index is 3~30g/10min；Preferably, second low density polyethylene (LDPE) is close
Spend for 0.915~0.930g/cm3, melt index is 3~30g/10min.
7. adhesive protecting film according to claim 5, it is characterised in that by weight, the material on the top layer is also wrapped
Include 2~6 parts of anti-sticking particle；Preferably, the particle diameter of the anti-sticking particle is 5~10 μm；Preferably, the anti-sticking particle is two
One or more in silicon oxide particle, silicone particles, acid amides particle.
8. adhesive protecting film according to claim 4, it is characterised in that by weight, the material of the sandwich layer includes
50~90 parts of the second Ethylene-Propylene Block Copolymer and 10~50 parts of the second random polypropylene；Preferably, the sandwich layer
Material includes 60~80 parts of second Ethylene-Propylene Block Copolymer and 20~40 parts of second random polypropylene.
9. adhesive protecting film according to claim 8, it is characterised in that second Ethylene-Propylene Block Copolymer
Density is 0.90~0.91g/cm3, relative molecular weight is 50000~300000, and melt index is 3~30g/10min；It is preferred that
Ground, the density of second random polypropylene is 0.90~0.91g/cm3, relative molecular weight is 30000~200000, and melting refers to
Number model is 3~30g/10min.
10. adhesive protecting film according to claim 4, it is characterised in that the thickness on the top layer is 4~8 μm；It is preferred that institute
The thickness for stating sandwich layer is 24~32 μm；It is preferred that the thickness of the adhesion coating is 4~8 μm.
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| CN109868081B (en) * | 2019-01-23 | 2021-02-12 | 昆山博益鑫成高分子材料有限公司 | High-temperature-resistant low-shrinkage protective film |
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| CN110205048A (en) * | 2019-05-30 | 2019-09-06 | 李明霞 | A kind of preparation method of thermostable transparent adhesive protecting film |
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