CN109929491A - Alternating bending device sticker, adhesive sheet, alternating bending laminate component and alternating bending device - Google Patents
Alternating bending device sticker, adhesive sheet, alternating bending laminate component and alternating bending device Download PDFInfo
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- CN109929491A CN109929491A CN201811330527.5A CN201811330527A CN109929491A CN 109929491 A CN109929491 A CN 109929491A CN 201811330527 A CN201811330527 A CN 201811330527A CN 109929491 A CN109929491 A CN 109929491A
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- Prior art keywords
- alternating bending
- sticker
- component
- bendability
- bending device
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Classifications
-
- 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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
-
- 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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
-
- 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
- C09J7/00—Adhesives in the form of films or foils
Abstract
The present invention provides alternating bending device sticker and adhesive sheet, it is when being suitable for alternating bending device and alternating bending and being placed in Long-term bend state, after releasing bending state, it is able to suppress adhering agent layer deformation, influence caused by mitigating the alternating bending because of alternating bending device and being placed in bending state.The sticker is used to be bonded the bendability component and another bendability component for constituting alternating bending device, wherein, on the basis of JIS K7244-1, the maximum relaxation modulus value for measuring that the sticker when deforming 10% is set as maximum relaxation modulus G (t)max(MPa), from being measured to the maximum relaxation modulus G (t)maxStart that sticker is persistently made to deform 10% until after 3757 seconds, the minimum relaxation modulus value measured during this period is set as minimum relaxation modulus G (t)minIt (MPa), is 0.85 or less by the relaxation modulus change value Δ logG (t) that formula (I) is calculated.Δ logG (t)=logG (t)max‑logG(t)min…(I)。
Description
Technical field
The present invention relates to the sticker of alternating bending device and adhesive sheet and alternating bending laminate components and repeatedly curved
Bent device.
Background technique
In recent years, the display body (display) as a kind of electronic equipment for device proposes a kind of flexible
Display.The bendability display for example as make its be bent and be arranged in columned cylinder fixation escope use,
Or as can bending or the extensive use of mobile display that is folded or rolled up and carries expected.
As the type of bendability display, such as organic electroluminescent (organic EL) display, electrophoresis side can be enumerated
The display (Electronic Paper) of formula uses plastic foil as liquid crystal display of substrate etc..
In above-mentioned bendability display, it is generally recognized that it is aobvious to constitute the bendability by the adhering agent layer fitting of adhesive sheet
Show the flexible member (bendability component) and another bendability component of device.Here, as unyielding previous
The adhesive sheet of display, such as it has been known that there is adhesive sheets shown in patent document 1 and 2.
Bendability display not only carries out a curved surface forming and carries out sometimes to it as recorded in Patent Document 3
Alternating bending (bending).In addition, can be also fixed sometimes with Long-term bend state in the alternating bending display.If
Previous adhesive sheet is used in the alternating bending display of such purposes, even if then after releasing bending state, yet
In the presence of the deformation for generating adhering agent layer, bendability display is in large curved always, leads to the case where being fixed on the bending state.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2015-174907 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2016-774 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2016-2764 bulletin
Summary of the invention
The technical problem to be solved in the present invention
The present invention is completed in view of above-mentioned actual state, its purpose is to provide alternating bending device sticker and
Adhesive sheet is bent when being suitable for alternating bending device and alternating bending and when being placed in Long-term bend state releasing
After state, it is able to suppress the deformation of adhering agent layer, influences and is placed in curved caused by the alternating bending for mitigating alternating bending device
It is influenced caused by curved state；Its purpose, which also resides in, provides alternating bending laminate component and alternating bending device, in alternating bending
When and when being placed in Long-term bend state, after releasing bending state, can mitigate influences and is placed in caused by alternating bending
It is influenced caused by bending state.
Solve the technological means of technical problem
In order to achieve the above objectives, first, the present invention provides a kind of alternating bending device sticker, is used to be bonded structure
At the bendability component and another bendability component of alternating bending device, which is characterized in that using JIS K7244-1 as base
Standard will make the maximum relaxation modulus value measured when sticker deformation 10% be set as maximum relaxation modulus G (t)max(MPa),
From being measured to the maximum relaxation modulus G (t)maxStart persistently to make the sticker deformation 10% until after 3757 seconds, it will herein
The period the smallest relaxation modulus value of measurement is set as minimum relaxation modulus G (t)min(MPa), the relaxation calculated by following formula (I)
Modulus change value Δ logG (t) is 0.85 or less (invention 1).
Δ logG (t)=logG (t)max-logG(t)min…(I)
In foregoing invention (invention 1), by meeting above-mentioned physical property, carried out repeatedly curved suitable for alternating bending device
When bent and when being placed in Long-term bend state, after releasing bending state, it is difficult to generate the deformation of adhering agent layer, inhibit repeatedly curved
Bent device is fixed on the state of large curved, therefore can mitigate and influence and be set to caused by the alternating bending of alternating bending device
It is influenced caused by bending state.
In foregoing invention (invention 1), preferably obtained in the Measurement of Dynamic Viscoelasticity on the basis of JIS K7244-1
Loss tangent (tan δ) at 25 DEG C is 0.328 or more, 0.85 or less (invention 2).
In foregoing invention (invention 2), by meeting above-mentioned physical property, it is easy to play high adhesion strength, even if being suitable for instead
Multiple bending apparatus and when carrying out alternating bending and when being placed in Long-term bend state, by be difficult to generate adhesion as described above
The interaction of the deformation of oxidant layer is able to suppress the removing at the interface of the adhering agent layer and adherend of crooked position generation.
In foregoing invention (invention 1,2), the storage modulus (G ') preferably at 25 DEG C is 0.01MPa or more, 0.25MPa
(invention 3) below.
In foregoing invention (invention 1~3), the loss modulus (G ") preferably at 25 DEG C be 0.005MPa or more,
0.10MPa or less (invention 4).
In foregoing invention (invention 1~4), the preferably described sticker is by containing (methyl) acrylate polymer (A)
Sticker made of adherence composition crosslinking with crosslinking agent (B) (invention 5).
Second, the present invention provides a kind of adhesive sheet, has for being bonded a bendability for constituting alternating bending device
The adhering agent layer of component and another bendability component, which is characterized in that the adhering agent layer is used by the alternating bending device
Sticker (invention 1~5) constitutes (invention 6).
In foregoing invention (invention 6), the preferably described adhesive sheet has a two panels stripping film, the adhering agent layer with it is described
The mode of the removing face contact of two panels stripping film clamps (invention 7) by the stripping film.
Third, the present invention provide a kind of alternating bending laminate component, have: constituting a bending of alternating bending device
Property component and another bendability component and one bendability component and another described bendability component are mutually pasted
The adhering agent layer of conjunction, which is characterized in that the adhering agent layer is the adhering agent layer (invention 8) of the adhesive sheet (invention 6,7).
In foregoing invention (invention 8), in preferably one bendability component and another described bendability component
At least one is display element (invention 9).
4th, the present invention provides a kind of alternating bending device, which is characterized in that has the alternating bending laminate component
(invention 8,9) (invention 10).
Invention effect
Alternating bending device sticker and adhesive sheet of the invention carries out repeatedly curved suitable for alternating bending device
When bent and when being placed in Long-term bend state, after releasing bending state, it is difficult to generate the deformation of adhering agent layer, can mitigate anti-
Influence caused by bending state is influenced and is placed in caused by the alternating bending of multiple bending apparatus.In addition, of the invention is repeatedly curved
Bent laminate component and alternating bending device are in alternating bending and when being placed in Long-term bend state, after releasing bending state,
Can mitigate influences and is placed in influence caused by bending state caused by alternating bending.
Detailed description of the invention
Fig. 1 is the sectional view of the adhesive sheet of an embodiment of the invention.
Fig. 2 is the sectional view of the alternating bending laminate component of an embodiment of the invention.
Fig. 3 is to test the explanatory diagram (side view) being illustrated to static buckling.
Fig. 4 is the explanatory diagram (side view) being illustrated to the deflection of the test film of the test result as bend test.
Fig. 5 is to test the explanatory diagram (side view) being illustrated to dynamic bending.
Description of symbols
1: adhesive sheet；11: adhering agent layer；12a, 12b: stripping film；2: alternating bending laminate component；21: the first bendabilities
Component；22: the second bendability components；S: test film；P: holding plate.
Specific embodiment
Hereinafter, embodiments of the present invention will be described.
[alternating bending device sticker]
The alternating bending device sticker (being only called " sticker " sometimes below) of present embodiment is for being bonded structure
At the sticker of a bendability component and another bendability component of alternating bending device.Alternating bending device and bendability
Component is as described later.
For the sticker of present embodiment, on the basis of JIS K7244-1, the measurement when sticker will be made to deform 10%
Maximum relaxation modulus value be set as maximum relaxation modulus G (t)max(MPa), from being measured to the maximum relaxation modulus G (t)maxIt opens
Beginning persistently makes the sticker deform 10% until after 3757 seconds, and the smallest relaxation modulus value measured during this period is set as most
Small relaxation modulus G (t)minIt (MPa), is 0.85 or less by the relaxation modulus change value Δ logG (t) that following formula (I) is calculated.
Δ logG (t)=logG (t)max-logG(t)min…(I)
In addition, shown in the detailed content of the measuring method of relaxation modulus G (t) test example as described later.
By keeping the relaxation modulus change value of the sticker of present embodiment small as described above, it is biased to perfectly elastic body
Property increases, and makes to answer variation small when its deformation with specified amount, that is, is easy to keep restorable power.Therefore, negative in releasing
Lotus time-varying describes easy reinstatement.Therefore, it is carried out in the alternating bending device for being applicable in the adhering agent layer being made of the sticker
When alternating bending and when being placed in Long-term bend state, after releasing bending state, it is difficult to generate the deformation of adhering agent layer, can press down
Alternating bending device processed is fixed on the state of large curved, therefore can mitigate shadow caused by the alternating bending of alternating bending device
Ring and be placed in influence caused by bending state.The effect is known as " the bending state mitigation of alternating bending device sometimes below
Effect ".In addition, the index of the number as above-mentioned alternating bending can exemplify 30,000 times as an example.
Furthermore it is preferred that the sticker of present embodiment is obtained by the Measurement of Dynamic Viscoelasticity on the basis of JIS K7244-1
The loss tangent (tan δ) at 25 DEG C arrived is 0.328 or more, 0.85 or less.In addition, loss tangent (tan δ)
Measuring method detailed content test example as described later shown in.
The sticker of present embodiment is glued especially by keeping loss tangent (tan δ) as described above big
Property enhancing, be easy to play high adhesion strength.Therefore, the alternating bending device for being applicable in the adhering agent layer being made of the sticker into
When row alternating bending or when being placed in Long-term bend state, relaxation modulus change value is small as also described above, by be difficult to produce
The interaction of the deformation of raw adhering agent layer, can inhibit and generate stripping on the adhering agent layer of crooked position and the interface of adherend
From.The effect is known as " interface peel inhibitory effect " sometimes below.
From the angle of the bending state alleviation effects of alternating bending device, above-mentioned relaxation modulus change value Δ logG
(t) it needs for 0.85 hereinafter, preferably 0.82 hereinafter, particularly preferably 0.75 hereinafter, further preferably 0.50 or less.Separately
Outside, the lower limit value of relaxation modulus change value is not particularly limited, but preferably generally 0.10 or more, and particularly preferably 0.15 or more.
The maximum relaxation modulus G (t) of the sticker of present embodimentmaxUpper limit value be preferably 1.0MPa hereinafter, especially excellent
0.95MPa is selected as hereinafter, further preferably 0.9MPa or less.By making maximum relaxation modulus G (t)maxUpper limit value be it is above-mentioned
Value, above-mentioned relaxation modulus change value Δ logG (t) readily satisfy above-mentioned value.Maximum relaxation modulus G (t)maxLower limit value without spy
It does not limit, but preferably generally 0.05MPa or more, particularly preferably 0.10MPa or more, further preferably 0.15MPa or more.
In addition, the minimum relaxation modulus G (t) of the sticker of present embodimentminLower limit value be preferably 0.005MPa with
On, particularly preferably 0.01MPa or more, further preferably 0.02MPa or more.By making minimum relaxation modulus G (t)minUnder
Limit value is above-mentioned value, and above-mentioned relaxation modulus change value Δ logG (t) readily satisfies above-mentioned value.Minimum relaxation modulus G (t)minIt is upper
Limit value is not particularly limited, but preferably generally 0.50MPa hereinafter, particularly preferably 0.45MPa hereinafter, further preferably
0.40MPa or less.
On the other hand, especially from the angle of interface peel inhibitory effect, the sticker of present embodiment 25
The lower limit value of loss tangent (tan δ) at DEG C is preferably 0.328 or more, and particularly preferably 0.45 or more, further preferably
It is 0.55.In addition, from the angle for the shape for maintaining adhering agent layer, the upper limit value of above-mentioned loss tangent (tan δ) is preferred
For 0.85 hereinafter, particularly preferably 0.75 hereinafter, further preferably 0.65.
As long as meeting above-mentioned physical property, the type of the sticker of present embodiment is not particularly limited, such as is also possible to third
Any in olefin(e) acid class sticker, polyesters sticker, polyurethanes sticker, rubber sticker, silicone sticker etc.
Kind.In addition, the sticker can be any one of emulsion-type, solvent type or no-solvent type, it is also possible to cross-linking type or non-friendship
Any one of connection type.Wherein, above-mentioned physical property is preferably readily satisfied and physical property, optical characteristics etc. also excellent acrylic acid of adhering
Class sticker.
In addition, can be the acrylic compounds sticker of active energy ray-curable as acrylic compounds sticker,
The acrylic compounds sticker that can be nonactive energy ray-curable can be thermally crosslinkable acrylic compounds sticker,
The acrylic compounds sticker that can be non-crosslinked property can also be the sticker for being composed these acrylic compounds stickers,
Good flexibility in order to obtain, the acrylic compounds sticker of preferably nonactive energy ray-curable.As nonactive energy
The acrylic compounds sticker of ray-curable, particularly preferred cross-linking type, further preferred heat cross-linked type.
The sticker of present embodiment is particularly preferably by containing (methyl) acrylate polymer (A) and crosslinking agent (B)
Adherence composition (hereinafter, sometimes referred to as " adherence composition P ") crosslinking made of sticker.If the sticker, then
Above-mentioned physical property is readily satisfied, and obtains good adhesion strength and defined cohesiveness, therefore durability also becomes excellent.In addition,
In the present specification, (methyl) acrylic acid refers to both acrylic acid and methacrylic acid.Other similar term is also identical.This
It outside, also include the concept of " copolymer " in " polymer ".
(1) ingredient of adherence composition P
(1-1) (methyl) acrylate polymer (A)
(methyl) acrylate polymer (A) preferably comprises (methyl) alkyl acrylate and has reactivity in the molecule
The monomer (monomer containing reactive functional groups) of functional group is as the monomeric unit for constituting the polymer.
By making (methyl) acrylate polymer (A) contain (methyl) alkyl acrylate as constituting the polymer
Monomeric unit can show preferred adherence.As (methyl) alkyl acrylate, the carbon atom number of optimizing alkyl is 1
~20 (methyl) alkyl acrylate.Alkyl can be straight-chain or branched, it is possible to have cyclic structure.
(methyl) alkyl acrylate that carbon atom number as alkyl is 1~20, preferably comprises the glass as homopolymer
Glass transition temperature (Tg) is -40 DEG C of (methyl) alkyl acrylates below (hereinafter, sometimes referred to as " low Tg acrylic acid alkyl
Ester ").By containing the low Tg alkyl acrylate as structures alone unit, the flexibility for the sticker that can be improved.
As low Tg alkyl acrylate, such as preferably to enumerate n-butyl acrylate (Tg-55 DEG C), acrylic acid just pungent
Ester (Tg-65 DEG C), Isooctyl acrylate monomer (Tg-58 DEG C), 2-EHA (Tg-70 DEG C), the different nonyl ester (Tg- of acrylic acid
58 DEG C), isodecyl acrylate (Tg-60 DEG C), isodecyl methacrylate (Tg-41 DEG C), the positive lauryl (Tg- of methacrylic acid
65 DEG C), acrylic acid tridecane ester (Tg-55 DEG C), tridecyl methacrylate (- 40 DEG C) etc..Wherein, from more effectively improving
The angle of flexibility is set out, as low Tg alkyl acrylate, the Tg of homopolymer be more preferably -45 DEG C hereinafter, particularly preferably -
50 DEG C or less.Specifically, particularly preferred n-butyl acrylate and 2-EHA.They can be used alone, can also
It is applied in combination two or more.
(methyl) acrylate polymer (A) preferably comprises the low Tg alkyl acrylate that lower limit value is 50 mass % or more
As constitute the polymer monomeric unit, particularly preferably contain 55 mass % or more, further preferably 60 mass % with
On.Pass through the above-mentioned low Tg alkyl acrylate containing 50 mass % or more, it is easier to by (methyl) acrylate polymer (A)
Glass transition temperature (Tg) be set as above range.
On the other hand, it is that 99.9 mass % are below above-mentioned that (methyl) acrylate polymer (A), which preferably comprises upper limit value,
Low Tg alkyl acrylate particularly preferably contains 99 mass % hereinafter, further excellent as the monomeric unit for constituting the polymer
Choosing contains 98 mass % or less.It, can be to be suitable for by containing 99.9 mass % above-mentioned low Tg alkyl acrylate below
It measures and imports other monomers ingredient (especially monomer containing reactive functional groups) into (methyl) acrylate polymer (A).
In addition, (methyl) alkyl acrylate that the carbon atom number as above-mentioned alkyl is 1~20, can also contain conduct
Monomer of the glass transition temperature (Tg) of homopolymer more than 0 DEG C (hereinafter, sometimes referred to as " high Tg alkyl acrylate ").Pass through
Contain the high Tg alkyl acrylate as structures alone unit, the relaxation modulus change value of obtained sticker becomes sometimes
Readily satisfy above-mentioned value.
Further, (methyl) alkyl acrylate for being 1~20 as the carbon atom number of alkyl, it is also preferred that being applied in combination low
Tg alkyl acrylate and high Tg alkyl acrylate.The relaxation modulus change value and loss angle of obtained sticker as a result,
Tangent value readily satisfies above-mentioned value.
When (methyl) acrylate polymer (A) contains high Tg alkyl acrylate as the monomer list for constituting the polymer
When first, content is preferably 5 mass % or more, particularly preferably 10 mass % or more, further preferably 15 mass % or more.
In addition, the content is preferably 30 mass % hereinafter, particularly preferably 25 mass % are hereinafter, further preferably 20 mass % or less.
As above-mentioned high Tg alkyl acrylate, such as methyl acrylate (Tg10 DEG C), methyl methacrylate can be enumerated
Ester (Tg105 DEG C), ethyl methacrylate (Tg65 DEG C), n-BMA (Tg20 DEG C), Isobutyl methacrylate
(Tg48 DEG C), Tert-butyl Methacrylate (Tg107 DEG C), n-stearyla crylate (Tg30 DEG C), the positive octadecyl ester of methacrylic acid
(Tg38 DEG C), cyclohexyl acrylate (Tg15 DEG C), cyclohexyl methacrylate (Tg66 DEG C), benzyl methacrylate (Tg54
DEG C), isobornyl acrylate (Tg94 DEG C), isobornyl methacrylate (Tg180 DEG C), adamantyl acrylate (Tg115
DEG C), adamantylmethacrylate (Tg141 DEG C), acrylic acid morpholine (Tg145 DEG C) etc..Among above-mentioned, from the angle of cohesiveness
Degree sets out, preferably methyl acrylate, methyl methacrylate and isobornyl acrylate.They can be used alone, and can also combine
Using two or more.
In addition, being as the carbon atom number of alkyl when low Tg alkyl acrylate is applied in combination with high Tg alkyl acrylate
When 1~20 (methyl) alkyl acrylate, (methyl) acrylate polymer (A) preferably comprise upper limit value be 85 mass % with
Under above-mentioned low Tg alkyl acrylate as constitute the polymer monomeric unit, particularly preferably contain 75 mass % hereinafter,
Further preferably 65 mass % or less.The relaxation modulus change value and loss tangent of the sticker obtained as a result, are more
Readily satisfy above-mentioned value.
By making (methyl) acrylate polymer (A) contain monomer containing reactive functional groups as constituting the polymer
Monomeric unit, it is anti-with crosslinking agent (B) described hereinafter via the reactive functional groups from the monomer containing reactive functional groups
It answers, cross-linked structure (tridimensional network) is consequently formed, obtains the sticker for the cohesiveness for having required.
Contain reactivity as the monomeric unit for constituting the polymer as what (methyl) acrylate polymer (A) contained
Monomer preferably enumerates the monomer with hydroxyl (hydroxyl monomer) in the molecule, in the molecule with carboxyl
Monomer (carboxyl group-containing monomer), in the molecule monomer (emulsion stability) with amino etc..These monomers containing reactive functional groups
Can be used alone one kind, also can be used simultaneously two or more.
In above-mentioned monomer containing reactive functional groups, preferably hydroxyl monomer and carboxyl group-containing monomer, particularly preferred hydroxyl
Monomer.Since the glass transition temperature (Tg) as homopolymer of hydroxyl monomer is relatively low, it is easy to maintain higher
The flexibility of obtained (methyl) acrylate polymer (A), (methyl) acrylate that carboxyl group-containing monomer can be improved
The adhesion strength of polymer (A).
As hydroxyl monomer, such as (methyl) acrylic acid 2- hydroxy methacrylate, (methyl) acrylic acid 2- hydroxyl can be enumerated
Propyl ester, (methyl) acrylic acid 3- hydroxy propyl ester, (methyl) acrylic acid 2- hydroxybutyl, (methyl) acrylic acid 3- hydroxybutyl, (first
Base) (methyl) hydroxyalkyl acrylates such as acrylic acid 4- hydroxybutyl etc..Wherein, from obtained (methyl) acrylic ester polymerization
The angle of the flexibility of object (A) is set out, preferably (methyl) acrylic acid 2- hydroxy methacrylate and (methyl) acrylic acid 2- hydroxy propyl ester.It
Can be used alone, also can be used in combination two or more.
As carboxyl group-containing monomer, such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, lemon can be enumerated
The ethylenically unsaturated carboxylic acids such as health acid.Wherein, excellent from the point of the adhesion strength of obtained (methyl) acrylate polymer (A)
Select acrylic acid.They can be used alone, and also can be used in combination two or more.
When (methyl) acrylate polymer (A) contains hydroxyl monomer as the monomeric unit for constituting the polymer,
The content of hydroxyl monomer is preferably 0.1 mass % or more, particularly preferably 0.3 mass % or more.In addition, the hydroxyl monomer
Content be preferably 30 mass % hereinafter, particularly preferably 25 mass % are hereinafter, further preferably 20 mass % or less.It is another
Aspect contains carboxylic when (methyl) acrylate polymer (A) contains carboxyl group-containing monomer as the monomeric unit for constituting the polymer
The content of base monomer is preferably 0.5 mass % or more, particularly preferably 1 mass % or more.In addition, the content of the carboxyl group-containing monomer
Preferably 10 mass % hereinafter, particularly preferably 7 mass % hereinafter, further preferably 5 mass % or less.By making hydroxyl
The content of monomer and carboxyl group-containing monomer is respectively above-mentioned value, the flexibility and adhesion of obtained (methyl) acrylate polymer (A)
Property become better, can be with the bending state alleviation effects of the alternating bending device for the adhering agent layer that higher level is reached.
In addition, being used as when (methyl) acrylate polymer (A) only contains hydroxyl monomer as the composition polymer
When the monomer containing reactive functional groups of monomeric unit, content is preferably 1 mass % or more, more preferably 3 mass % or more, special
It You Xuanwei not 5 mass % or more, further preferably 10 mass % or more, most preferably 15 mass % or more.
(methyl) acrylate polymer (A) is containing nitrogen atom monomer as the monomer list for constituting the polymer
Member.As nitrogen atom monomer, the monomer with amino can be enumerated, the monomer with amide groups, there is nitrogenous heterocyclic list
Body etc., wherein preferably there is nitrogenous heterocyclic monomer.
As with nitrogenous heterocyclic monomer, such as N- (methyl) acryloyl morpholine, N- vinyl -2- pyrroles can be enumerated
Alkanone, N- (methyl) acryloyl group pyrrolidones, N- (methyl) acryloylpiperidine, N- (methyl) acryloyl group pyrrolidines, N-
(methyl) acryloylaziridine, '-aziridino ethyl (methyl) acrylate, 2- vinylpyridine, 4-vinylpridine, 2-
Vinylpyrazine, 1- vinyl imidazole, N- vinyl carbazole, N- vinyl phthalimide etc., wherein preferred to play more
N- (methyl) acryloyl morpholine of excellent adhesion strength, particularly preferred N- acryloyl morpholine.They can be used alone, and can also combine
Using two or more.
When (methyl) acrylate polymer (A) contains nitrogen atom monomer as the monomeric unit for constituting the polymer
When, the content of nitrogen atom monomer is preferably 1 mass % or more, particularly preferably 3 mass % or more.In addition, the nitrogen atom
The content of monomer is preferably 20 mass % hereinafter, particularly preferably 15 mass % are hereinafter, further preferably 10 mass % or less.
According to required, list of (methyl) acrylate polymer (A) containing other monomers as the composition polymer
Body unit.In order not to hinder the above-mentioned effect of the monomer containing reactive functional groups, as other monomers, preferably without containing reactive official
The monomer that can be rolled into a ball.As the monomer, such as (methyl) methoxyethyl acrylate, (methyl) ethioxy second can be enumerated
Ester etc. (methyl) alkoxyalkyl acrylate, vinyl acetate, styrene etc..They can be used alone, and also can be used in combination
It is two or more.
The polymeric species of (methyl) acrylate polymer (A) can be random copolymer, be also possible to block copolymer.
The lower limit value of the weight average molecular weight of (methyl) acrylate polymer (A) is preferably 100,000 or more, particularly preferably
300000 or more, further preferably 500,000 or more.If the lower limit value of the weight average molecular weight of (methyl) acrylate polymer (A) is
Above-mentioned value, then the durability of sticker becomes more excellent.In addition, the weight average molecular weight in this specification is to pass through gel infiltration color
The value of the standard polystyren conversion of (GPC) method of composing measurement.
In addition, the upper limit value of the weight average molecular weight of (methyl) acrylate polymer (A) is preferably 1,500,000 hereinafter, especially
Preferably 1,200,000 hereinafter, further preferably 1,000,000 or less.The weight average molecular weight of (if methyl) acrylate polymer (A)
Upper limit value is above-mentioned value, then the flexibility and adhesion strength of the sticker obtained become more excellent.
In adherence composition P, (methyl) acrylate polymer (A) can be used alone one kind, also can be used in combination two
Kind or more.
(1-2) crosslinking agent (B)
Crosslinking agent (B) will contain heating of adherence composition P of the crosslinking agent (B) etc. and be used as inducement (trigger), hand over
Join (methyl) acrylate polymer (A), forms tridimensional network.The cohesiveness of the sticker improved as a result, adhesion
The durability of oxidant layer becomes excellent.
As above-mentioned crosslinking agent (B), as long as being carried out with reactive group possessed by (methyl) acrylate polymer (A)
Reaction, such as isocyanates crosslinking agent, epoxies crosslinking agent, amine cross-linking agent, melamine class crosslinking can be enumerated
Agent, aziridines crosslinking agent, hydrazine crosslinking agent, aldehyde crosslinking agent, oxazoline class crosslinking agent, metal alkoxide class crosslinking agent, metal
Chelates crosslinking agent, metallic salt crosslinking agent, ammonium salt class crosslinking agent etc..Among above-mentioned, it is preferable to use with as (methyl) third
The monomer containing reactive functional groups of the structures alone unit of olefine acid ester polymer (A), the reactivity especially with hydroxyl monomer
Excellent isocyanates crosslinking agent.One kind in addition, crosslinking agent (B) can be used alone, or can be used in combination two or more.
Isocyanates crosslinking agent at least contains polyisocyanate compounds.As polyisocyanate compounds, such as can
Enumerate the aromatic series polyisocyanate such as toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate, benzene dimethylene diisocyanate
The aliphatic polymeric isocyanates such as ester, hexamethylene diisocyanate, isophorone diisocyanate, two isocyanide of hydrogenated methylene diphenyld
Ester ring types polyisocyanate such as acid esters etc. and their biuret body, isocyanuric acid ester body and as with ethylene glycol, the third two
The addition product etc. of the reactant of the low molecules active hydrogen-contg compound such as alcohol, neopentyl glycol, trimethylolpropane, castor oil.Wherein,
From the reactive angle with hydroxyl, the preferred modified aromatic poly-isocyanate of trimethylolpropane, particularly preferred three
Hydroxymethyl-propane modified toluene diisocyanate and the modified benzene dimethylene diisocyanate of trimethylolpropane.
Relative to 100 mass parts of (methyl) acrylate polymer (A), crosslinking agent (B's) in adherence composition P contains
Amount is preferably 0.1 mass parts or more, more than particularly preferably 0.4 mass parts, more than further preferably 1.0 mass parts.In addition,
The content is preferably that 10 below the mass, particularly preferably 8 below the mass, and further preferably 5 below the mass.By making
Within the above range, the cohesiveness of obtained sticker becomes suitable to the content of crosslinking agent (B), can reach to obtain with high level
Adhering agent layer alternating bending device bending state alleviation effects.
(1-3) various additives
In adherence composition P, the various additives of acrylic compounds sticker, example can be commonly used according to required addition
Silane coupling agent, ultraviolet absorbing agent, antistatic agent, tackifier, antioxidant, light stabilizer, softening agent, filling can such as be added
Agent, adjustable refractive index agent etc..In addition, polymer solvent or retarder thinner described hereinafter, which is not included in, constitutes adherence composition P
Additive in.
(2) preparation of adherence composition P
By preparation (methyl) acrylate polymer (A), by obtained (methyl) acrylate polymer (A) and crosslinking
Agent (B) mixing, while according to required addition additive, adherence composition P can be prepared.
The mixture polymerization that the monomer of polymer will be constituted by using common radical polymerization, can prepare (methyl)
Acrylate polymer (A).The polymerization of (methyl) acrylate polymer (A) preferably according to required use polymerization initiator and is led to
It crosses solution polymerization process and carries out.As polymer solvent, such as ethyl acetate, n-butyl acetate, isobutyl acetate, first can be enumerated
Benzene, acetone, hexane, methyl ethyl ketone etc. also can be used simultaneously two or more.
As polymerization initiator, azo compound, organic peroxide etc. can be enumerated, also can be used simultaneously two kinds with
On.As azo compound, such as 2,2 '-azodiisobutyronitriles, 2,2 '-azos bis- (2- methylbutyronitriles), 1 can be enumerated,
1 '-azo bis- (hexamethylene 1- formonitrile HCNs), 2,2 '-azos bis- (2,4- methyl pentane nitriles), the bis- (2,4- dimethyl -4- of 2,2 '-azos
Methoxyl-valeronitrile), bis- (2 Methylpropionic acid) dimethyl esters of 2,2 '-azos, 4,4 '-azos bis- (4- cyano valeric acids), 2,2 '-azos
Bis- (2- hydroxymethyl propionitrile), 2,2 '-azos bis- [2- (2- imidazoline -2- base) propane] etc..
As organic peroxide, such as benzoyl peroxide, peroxidized t-butyl perbenzoate, peroxidating hydroxyl can be enumerated
Base isopropylbenzene, di-isopropyl peroxydicarbonate, peroxy dicarbonate di-n-propyl ester, two (2- ethoxyethyl group) peroxidating, two carbon
Acid esters, new peroxide tert-butyl caprate, tert-Butyl peroxypivalate, peroxidating (3,5,5- trimethyl acetyl), two propionyl mistakes
Oxide, diacetyl peroxide etc..
In addition, in above-mentioned polymerization process, by blending the chain-transferring agents such as 2 mercapto ethanol, adjustable obtained polymer
Weight average molecular weight.
After obtaining (methyl) acrylate polymer (A), pass through the solution in (methyl) acrylate polymer (A)
It middle addition crosslinking agent (B) and according to required additive and retarder thinner and is sufficiently mixed, obtains by the diluted adhesion of solvent
Property composition P (coating solution).
In addition, for any one of above-mentioned each ingredient, using solid material or not to be diluted
State generate when being mixed with other compositions and be precipitated in the case where, individually the ingredient can also be dissolved in advance or to be diluted in dilution molten
It agent and then is mixed with other compositions.
As above-mentioned retarder thinner, such as the aliphatic hydrocarbons such as hexane, heptane, hexamethylene, the virtues such as toluene, dimethylbenzene can be used
Fragrant race's hydrocarbon, the halogenated hydrocarbons such as methylene chloride, ethlyene dichloride, the alcohol such as methanol, ethyl alcohol, propyl alcohol, butanol, 1- methoxy-2-propanol, third
The ketone such as ketone, methyl ethyl ketone, 2 pentanone, isophorone, cyclohexanone, the esters such as ethyl acetate, butyl acetate, ethyl cellosolve etc. are molten
Fine agent class solvent etc..
As the concentration and viscosity of the coating solution prepared through the above way, as long as not having for the range that can be coated with
There is special limitation, can be carried out according to situation suitably selected.Such as so that the concentration of adherence composition P becomes 10~60 mass %
Mode be diluted.In addition, addition retarder thinner etc. is not necessary condition, as long as adherence when obtaining coating solution
Composition P is the viscosity etc. that can be coated with, then can not also add retarder thinner.At this point, adherence composition P is by (methyl) propylene
Coating solution of the polymer solvent of acid ester polymer (A) directly as retarder thinner.
(3) preparation of sticker
The sticker of present embodiment is preferably crosslinked by adherence composition P.The crosslinking of adherence composition P is usual
It can be carried out by heat treatment.In addition, retarder thinner etc. can will be made from the adherence composition P being coated on required object
Film in volatilize when drying process double as be the heat treatment.
The heating temperature of heat treatment is preferably 50~150 DEG C, and particularly preferably 70~120 DEG C.In addition, heating time is excellent
It is selected as 10 seconds~10 minutes, particularly preferably 50 seconds~2 minutes.
After a heating treatment, curing in 1~2 week or so can be set under room temperature (for example, 23 DEG C, 50%RH) as needed
Phase.When needing the maturation period, sticker is being formed after the maturation period, when not needing the maturation period, shape after heat treatment
At sticker.
By above-mentioned heat treatment (and curing), (methyl) acrylate polymer (A) is abundant via crosslinking agent (B)
Crosslinking forms cross-linked structure, obtains sticker.The sticker has defined cohesiveness.
(4) physical property of sticker
The lower limit value of storage modulus (G ') of the sticker of present embodiment at 25 DEG C is preferably 0.01MPa or more.This
Outside, the upper limit value of above-mentioned storage modulus (G ') is preferably 0.25MPa hereinafter, particularly preferably 0.20MPa or less.
In addition, the lower limit value of loss modulus (G ") of the sticker of present embodiment at 25 DEG C be preferably 0.005MPa with
On, particularly preferably 0.01MPa or more.In addition, the upper limit value of above-mentioned loss modulus (G ") is preferably 0.1MPa hereinafter, especially excellent
It is selected as 0.08MPa or less.
If storage modulus (G ') and loss modulus (G ") difference of the sticker of present embodiment are within the above range, right
The adhesion strength of bendability component becomes well, and the durability of alternating bending device is improved.In addition, storage modulus (G ') and damage
Shown in the measuring method of consumption modulus (G ") test example as described later.
[adhesive sheet]
The adhesive sheet of present embodiment have for be bonded composition alternating bending device a bendability component with it is another
The adhering agent layer of a bendability component, the adhering agent layer are made of above-mentioned sticker.
Specific composition as the adhesive sheet of present embodiment example is shown in Fig. 1.
As shown in Figure 1, the adhesive sheet 1 of an embodiment is by two panels stripping film 12a, 12b and to remove with above-mentioned two panels
The mode of the removing face contact of piece 12a, 12b and by two panels stripping film 12a, the 12b clamp adhering agent layer 11 constitute.In addition,
The release surface of stripping film in this specification refer in stripping film with fissility face, including implement lift-off processing face and
Any one of the face that lift-off processing is not carried out but shows fissility.
(1) constituent element
(1-1) adhering agent layer
Adhering agent layer 11 is made of the sticker of above embodiment, is preferably glued as made of adherence composition P crosslinking
Agent constitute.
Under the thickness (value measured on the basis of JIS K7130) of the adhering agent layer 11 of the adhesive sheet 1 of present embodiment
Limit value is preferably 2 μm or more, particularly preferably 5 μm or more, further preferably 10 μm or more.If the thickness of adhering agent layer 11
Lower limit value is above-mentioned value, then the adhesion strength being easy needed for playing, can effectively inhibit floating of being generated in alternating bending or
Removing.In addition, the upper limit value of the thickness of adhering agent layer 11 be preferably 150 μm hereinafter, more preferably 100 μm hereinafter, particularly preferably
For 70 μm hereinafter, further preferably 50 μm or less.If the upper limit value of the thickness of adhering agent layer 11 is above-mentioned value, it is able to suppress
Sticker caused by alternating bending or the ingredient for constituting sticker are oozed out from adhering agent layer.In addition, adhering agent layer 11 can be with
The form of single layer is formed, also can laminated multi-layer and formed.
(1-2) stripping film
Stripping film 12a, 12b protect adhering agent layer 11 until when using adhesive sheet 1, are using 1 (adhering agent layer of adhesive sheet
11) it is stripped when.In the adhesive sheet 1 of present embodiment, one or both of stripping film 12a, 12b are not necessarily needed.
As stripping film 12a, 12b, such as polyethylene film can be used, polypropylene screen, polybutene film, polybutadiene film, gather
Methylpentene film, polychloroethylene film, vinyl chloride copolymer film, polyethylene terephthalate film, poly- naphthalenedicarboxylic acid ethylene glycol
Ester film, polybutylene terephthalate (PBT) film, polyurethane film, ethylene vinyl acetate film, ionomer resin film, ethylene-(first
Base) acrylic copolymer film, ethylene-(methyl) acrylate copolymer film, polystyrene film, polycarbonate membrane, polyimides
Film, fluororesin film etc..Furthermore, it is possible to use the cross linking membrane of these films.It further, can also be the stacked film of these films.
It is preferred that being implemented with stripping in the release surface (face especially contacted with adhering agent layer 11) of above-mentioned stripping film 12a, 12b
From processing.As the remover for lift-off processing, for example, can enumerate alcohol acids, silicone, fluorine class, unsaturated polyester (UP) class,
The remover of polyolefins, wax class.In addition, a stripping film is preferably set as the big weight of peeling force in stripping film 12a, 12b
Another stripping film is set as the small light exfoliated stripping film of peeling force by exfoliated stripping film.
The thickness of stripping film 12a, 12b are not particularly limited, but usually 20~150 μm or so.
(2) manufacture of adhesive sheet
As a Production Example of adhesive sheet 1, it is illustrated to the case where having used above-mentioned adherence composition P.One
It is coated with the coating fluid of adherence composition P in the release surface of a stripping film 12a (or 12b), is heated, makes adherence group
Object P heat cross-linking is closed after forming coating layer, the release surface of another stripping film 12b (or 12a) is overlapped on the coating layer.It needs
When the maturation period, by the way that the maturation period is arranged, above-mentioned coating layer becomes adhering agent layer 11, and when not needing the maturation period, above-mentioned coating layer is straight
It is connected into as adhering agent layer 11.Above-mentioned adhesive sheet 1 is obtained as a result,.The condition of heat treatment and curing is as described above.
As another Production Example of adhesive sheet 1, adherence composition P is coated in the release surface of a stripping film 12a
Coating fluid, heated, make adherence composition P heat cross-linking and form coating layer, obtain the stripping film with coating layer
12a.In addition, being coated with the coating fluid of above-mentioned adherence composition P in the release surface of another stripping film 12b, carry out at heating
Reason, makes adherence composition P heat cross-linking and forms coating layer, obtain the stripping film 12b with coating layer.Then, so that two coatings
The mode that layer contacts with each other is bonded the stripping film 12a with coating layer and the stripping film 12b with coating layer.When needing the maturation period, lead to
The setting maturation period is spent, the coating layer of above-mentioned stacking becomes adhering agent layer 11, and when not needing the maturation period, the coating layer of above-mentioned stacking is straight
It is connected into as adhering agent layer 11.Above-mentioned adhesive sheet 1 is obtained as a result,.According to the Production Example, even if when adhering agent layer 11 is thicker,
It can steadily be manufactured.
As the method for the coating fluid for being coated with above-mentioned adherence composition P, for example, using stick coating method, scraper for coating method,
Rolling method, scraper coating method, die coating methods, gravure coating process etc..
(3) adhesion strength
The adhesive sheet 1 of present embodiment is preferably 5.1N/25mm or more to the lower limit value of the adhesion strength of soda-lime glass, especially
Preferably 5.5N/25mm or more, further preferably 6.0N/25mm or more.If the adhesion strength of adhesive sheet 1 be 5.1N/25mm with
On, then interface peel inhibitory effect becomes more excellent.On the other hand, the upper limit value of above-mentioned adhesion strength is not particularly limited, but logical
Often preferably 25N/25mm hereinafter, more preferably 20N/25mm hereinafter, particularly preferably 15N/25mm or less.In addition, above-mentioned viscous
Put forth effort to refer to the adhesion strength measured by the 180 degree stripping method on the basis of JIS Z0237:2009 substantially, it is specific to test
Shown in method test example as described later.
[alternating bending laminate component]
As shown in Fig. 2, the alternating bending laminate component 2 of present embodiment has with lower member and is constituted: the first bendability
Component 21 (a bendability component), the second bendability component 22 (another bendability component), between them and by
The adhering agent layer 11 that one bendability component 21 and the second bendability component 22 mutually fit.
The adhering agent layer 11 of above-mentioned alternating bending laminate component 2 is the adhering agent layer 11 of above-mentioned adhesive sheet 1.
Alternating bending laminate component 2 is alternating bending device itself, or to constitute the structure of a part of alternating bending device
Part.Alternating bending device be preferably can alternating bending (including bending) display, but not limited thereto.As the alternating bending
Device, such as display (Electronic Paper), the flexible printing of organic electroluminescent (organic EL) display, electrophoretic can be enumerated
Substrate uses plastic base (film) as the liquid crystal display of substrate, collapsible display etc., or touch panel.
First bendability component 21 and the second bendability component 22 be can alternating bending (including bending) component, such as can
Overlay film, screened film, polarizing film, polarizer, phase difference film, view angle compensation film, brightness raising film, contrast is enumerated to improve
Film, diffusion barrier, semipermeable reflection film, electrode film, transparent and electrically conductive film, metal nethike embrane, film sensors, liquid crystalline polymer film, hair
Photopolymer film, membranaceous liquid crystal module, organic EL mould group (organic EL film), electronics paper matrix group (membranaceous Electronic Paper) etc..
Among above-mentioned, at least one of the first bendability component 21 and the second bendability component 22 are can alternating bending
Display element, specifically, it is preferable that (having for liquid crystalline polymer film, light emitting polymer film, membranaceous liquid crystal module, organic EL mould group
Machine EL film) or electronics paper matrix group (membranaceous Electronic Paper).
The Young's modulus of first bendability component 21 and the second bendability component 22 is respectively preferably 0.1~10GPa, especially
Preferably 0.5~7GPa, further preferably 1.0~5GPa.By making the first bendability component 21 and the second bendability component
22 Young's modulus within the above range, is easy that each bendability component is made to carry out alternating bending.
The thickness of first bendability component 21 and the second bendability component 22 is respectively preferably 5~3000 μm, particularly preferably
It is 10~1000 μm, further preferably 10~500 μm.By making the first bendability component 21 and the second bendability component 22
Thickness within the above range, is easy that each bendability component is made to carry out alternating bending.
In order to manufacture above-mentioned alternating bending laminate component 2, as an example, a stripping film of adhesive sheet 1 is removed
12a is bonded the adhering agent layer 11 that adhesive sheet 1 exposes on a face of the first bendability component 21.
Then, another stripping film 12b, the adhesion that fitting adhesive sheet 1 exposes are removed from the adhering agent layer 11 of adhesive sheet 1
Oxidant layer 11 and the second bendability component 22, obtain alternating bending laminate component 2.In addition, as another example, commutative first
The coating squence of bendability component 21 and the second bendability component 22.
[alternating bending device]
The alternating bending device of present embodiment has above-mentioned alternating bending laminate component 2, can be only by alternating bending
Laminate component 2 constitute, can also have one or more alternating bending laminate components 2 with others bendability components and constitute.
Structure is laminated when an alternating bending laminate component 2 and another alternating bending laminate component 2 is laminated, or in stacking alternating bending
When part 2 and other bendability components, it is laminated preferably via the adhering agent layer 11 of above-mentioned adhesive sheet 1.
Since the adhering agent layer of the alternating bending device of present embodiment is made of above-mentioned sticker, in alternating bending
When (such as 30,000 times) and when being placed in Long-term bend state (for example, at least 24 hours or more), can after releasing bending state
Alternating bending device is inhibited to be fixed on biggish bending state, mitigating influences caused by alternating bending and be placed in bending state to make
At influence.The bending state alleviation effects of the alternating bending device, such as can be curved by the static state tested based on static buckling
Bent deflection and the dynamic bending deflection tested based on dynamic bending are evaluated.
In static buckling test, sticker will be seized on both sides by the arms with two panels polyethylene terephthalate film (thickness: 12 μm)
Made of layer (thickness: 12 μm), the laminated body of 200mm × 50mm size is as test film.As shown in figure 3, in 23 DEG C, 50%RH
In the environment of, test film S is made of in the two panels set up glass plate with curved state and keeps 24 small between holding plate P
When.At this point, by the mutual distance of two panels holding plate P be set as 6mm (bending diameter of test film S:), test
The summary central portion of the long side (200mm) of piece S becomes bending section, so that two short sides (50mm) of test film S are located at the side of upside
Formula keeps test film S.After having carried out static buckling test, from test film S is taken out between two panels holding plate P, such as Fig. 4 institute
Show, in a manner of making the convex direction of bending section become upside, test film S is placed on plate.Then, test is completed rigid
Afterwards, after testing 30 minutes and after test 24 hours, the height h on (variant part) vertex from planar surface to bending section is measured, and will
It is as static buckling deflection.The test result that the static buckling deflection can be tested as static buckling, and it is quiet with this
Bending state alleviation effects are evaluated on the basis of state bending deformation quantity.
After rigid completion test, the static buckling deflection based on static buckling test is preferably 3mm hereinafter, particularly preferably
For 1mm hereinafter, further preferably 0.5mm or less.In addition, preferably 1mm is hereinafter, particularly preferably after test 30 minutes
0.5mm or less.In addition, preferably 0.5mm is hereinafter, particularly preferably 0.3mm or less after test 24 hours.In addition, any one
The lower limit value of static buckling deflection is both preferably 0mm.
On the other hand, it in dynamic bending test, will be held under the arm with two panels polyethylene terephthalate film (thickness: 12 μm)
It holds made of adhering agent layer (thickness: 12 μm), the laminated body of 150mm × 50mm size is as test film.As shown in figure 5,23
DEG C, in the environment of 50%RH, test film S is maintained between the two panels holding plate P of plane body zero load U-shaped elongation test machine.
A holding plate P and another holding plate P keeping parallelism relationship in two holding plate P, can relative to another holding plate P
Carry out the reciprocating motion of close-separation.Two holding plate P mutual distance changes (test film S between 86mm~6mm
Bending diameter:Stroke: 80mm).The summary central portion of the long side (150mm) of test film S becomes bending section, so that examination
The mode that two short sides (50mm) for testing piece S are located at upside is fixed on holding plate P.In this state, with rate of bending (holding plate
The reciprocating movement speed of P) 30rpm is bent test film S 30,000 times.After having carried out dynamic bending test, from two holding plates
Test film S is taken out between P, as shown in figure 4, being placed in test film S flat in a manner of making the convex direction of bending section become upside
On plate.Then, after rigid completion test and after test 24 hours, the height on (variant part) vertex from planar surface to bending section is measured
H is spent, and as dynamic bending deflection.The test result that the dynamic bending deflection can be tested as dynamic bending,
And bending state alleviation effects are evaluated on the basis of the dynamic bending deflection.
After rigid completion test, the dynamic bending deflection based on dynamic bending test is preferably 3mm hereinafter, particularly preferably
For 1mm hereinafter, further preferably 0.5mm or less.In addition, preferably 1mm is hereinafter, particularly preferably after test 24 hours
0.5mm or less.In addition, the lower limit value of any one dynamic bending deflection is both preferably 0mm.
The implementation described above be for easy understanding the present invention and records, be not intended to limit it is of the invention and
It records.Therefore, each element disclosed in above embodiment be include the whole design alterations for belonging to technical scope of the invention
Or the purport of equivalent.
For example, any one in stripping film 12a, 12b in adhesive sheet 1 or both can be omitted, in addition it is also possible to be laminated
Required bendability component is to replace stripping film 12a and/or 12b.
Embodiment
Hereinafter, the present invention is described in further detail by embodiment etc., but the scope of the present invention is not by this
A little embodiments etc. limit.
[embodiment 1]
The preparation of (1. methyl) acrylate polymer (A)
By solution polymerization process by the positive fourth of the acrylic acid of the 2-EHA of 47.8 mass parts, 47.8 mass parts
The acrylic acid 2- hydroxy propyl ester of ester, the acrylic acid of 4 mass parts and 0.4 mass parts is copolymerized, and prepares (methyl) acrylate polymer
(A).The molecular weight of (methyl) acrylate polymer (A) is somebody's turn to do using method measurement described hereinafter, as a result, weight average molecular weight
It (Mw) is 600,000.
2. the preparation of adherence composition
By 100 mass parts (solid component scaled value；It is same as below) above-mentioned operation 1 obtained in (methyl) acrylate
The trimethylolpropane modified toluene diisocyanate (TOYOCHEM as crosslinking agent (B) of polymer (A) and 3.75 mass parts
Co., Ltd.'s manufacture, name of product " BHS8515 ") mixing, it is sufficiently stirred, using dilution with toluene, thus obtains adherence combination
The coating solution (solid component concentration: 30.0 mass %) of object.
3. the manufacture of adhesive sheet
Using comma coating machine (comma coater), in use silicone remover to polyethylene terephthalate
The single side of film carried out lift-off processing re-release type stripping film (Lintec Corporation manufacture, name of product " SP-
PET382150 ") lift-off processing face on the coating solution of adherence composition that is coated with.Then, with 90 DEG C to coating layer
Heat treatment in 1 minute is carried out, coating layer is formed.
Then, so that the coating layer obtained above re-released on type stripping film and use silicone remover are to poly- pair
The single side of ethylene terephthalate film has carried out light exfoliated stripping film (the Lintec Corporation system of lift-off processing
Make, name of product " SP-PET381031 ") lift-off processing face contact mode, by the light exfoliated stripping film and the coating layer
Fitting, carries out curing for 7 days under conditions of 23 DEG C, 50%RH, thus adhesive sheet of the production with 12 μm of thickness of adhering agent layer,
Make the adhesive sheet formed by re-releasing type stripping film/adhering agent layer (thickness: 12 μm)/light exfoliated stripping film composition.
In addition, adhering agent layer with a thickness of on the basis of JIS K7130, use level pressure thickness tester (TECLOCK CO., LTD. system
Make, name of product " PG-02 ") measurement value.
[embodiment 2]
Other than the blended amount of crosslinking agent (B) is changed to 6.56 mass parts, make in the same manner as example 1
Adhesive sheet.
[embodiment 3]
By solution polymerization process by the 2-EHA of 60 mass parts, 20 mass parts methyl methacrylate and
The acrylic acid 2- hydroxy methacrylate of 20 mass parts is copolymerized, and is prepared (methyl) acrylate polymer (A).Use method described hereinafter
The molecular weight of (methyl) acrylate polymer (A) is somebody's turn to do in measurement, as a result, weight average molecular weight (Mw) is 600,000.
The conduct of (methyl) acrylate polymer (A) obtained above of 100 mass parts and 1.88 mass parts is crosslinked
Trimethylolpropane modified toluene diisocyanate (manufacture of TOYOCHEM Co., Ltd., the name of product of agent (B)
" BHS8515 ") mixing, it is sufficiently stirred, is diluted using methyl ethyl ketone (MEK), the coating for thus obtaining adherence composition is molten
Liquid (solid component concentration: 30.0 mass %).Using the coating solution of obtained adherence composition, with same as Example 1
Mode make adhesive sheet.
[embodiment 4]
By solution polymerization process by the butyl acrylate of 60 mass parts, the methyl acrylate of 20 mass parts and 20 mass parts
The copolymerization of acrylic acid 2- hydroxy methacrylate, prepares (methyl) acrylate polymer (A).It should (first using method measurement described hereinafter
Base) acrylate polymer (A) molecular weight, as a result, weight average molecular weight (Mw) be 600,000.
By (methyl) acrylate polymer (A) obtained above of 100 mass parts, the conduct crosslinking agent of 1.88 mass parts
(B) trimethylolpropane modified toluene diisocyanate (manufacture of TOYOCHEM Co., Ltd., name of product " BHS8515 ")
Mixing, is sufficiently stirred, is diluted using MEK, obtain the coating solution (solid component concentration: 30.0 matter of adherence composition
Measure %).Using the coating solution of obtained adherence composition, adhesive sheet is made in the same manner as example 1.
[embodiment 5]
By solution polymerization process by the 2-EHA of 65 mass parts, the N- acryloyl morpholine of 5 mass parts, 15 matter
The isobornyl acrylate of part and the acrylic acid 2- hydroxy methacrylate copolymerization of 15 mass parts are measured, (methyl) acrylate polymer is prepared
(A).The molecular weight of (methyl) acrylate polymer (A) is somebody's turn to do using method measurement described hereinafter, as a result, weight average molecular weight
It (Mw) is 500,000.
By (methyl) acrylate polymer (A) obtained above of 100 mass parts, the conduct crosslinking agent of 1.20 mass parts
(B) trimethylolpropane modified toluene diisocyanate (manufacture of TOYOCHEM Co., Ltd., name of product " BHS8515 ")
Mixing, is sufficiently stirred, is diluted using MEK, obtain the coating solution (solid component concentration: 30.0 matter of adherence composition
Measure %).Using the coating solution of obtained adherence composition, adhesive sheet is made in the same manner as example 1.
[embodiment 6]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 3 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.47 mass parts, makes adhesive sheet in the same manner as example 1.
[embodiment 7]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 3 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.94 mass parts, makes adhesive sheet in the same manner as example 1.
[embodiment 8]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 4 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.47 mass parts, makes adhesive sheet in the same manner as example 1.
[embodiment 9]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 4 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.94 mass parts, makes adhesive sheet in the same manner as example 1.
[embodiment 10]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 5 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.60 mass parts, makes adhesive sheet in the same manner as example 1.
[comparative example 1]
Other than the blended amount of crosslinking agent (B) is changed to 0.94 mass parts, make in the same manner as example 1
Adhesive sheet.
[comparative example 2]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 3 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.23 mass parts, makes adhesive sheet in the same manner as example 1.
[comparative example 3]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 4 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.23 mass parts, makes adhesive sheet in the same manner as example 1.
[comparative example 4]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 5 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.15 mass parts, makes adhesive sheet in the same manner as example 1.
[comparative example 5]
In addition to using (methyl) acrylate polymer (A) prepared in embodiment 5 and by the blended amount of crosslinking agent (B)
It is changed to other than 0.30 mass parts, makes adhesive sheet in the same manner as example 1.
[comparative example 6]
By isobutylene-isoprene copolymer (manufacture of Japan Butyl Co., Ltd., the name of product of 15 mass parts
" Butyl 365 "), the tackifier of 3 mass parts (ZEON Corporation manufacture, name of product " Quintone A100 ") it is mixed
Close, be sufficiently stirred, using dilution with toluene, thus obtain the adherence composition as butyl rubber coating solution (solid at
Divide concentration: 15 mass %).In addition to the adherence composition used coating solution and heat treatment temperature is set as 100
Other than DEG C, adhesive sheet is made in the same manner as example 1.
In addition, in table 1, record (methyl) acrylate polymer (A) in each Examples and Comparative Examples composition and
The blended amount (mass parts relative to 100 mass parts of (methyl) acrylate polymer (A)) of crosslinking agent (B).Abbreviation in table 1
Symbol is as described below.
2EHA: 2-EHA
BA: n-butyl acrylate
AA: acrylic acid
2HPA: acrylic acid 2- hydroxy propyl ester
MMA: methyl methacrylate
HEA: acrylic acid 2- hydroxy methacrylate
MA: methyl acrylate
ACMO:N- acryloyl morpholine
IBXA: isobornyl acrylate
[test example 1] (measurement of relaxation modulus)
The laminated body of thickness 0.5mm is made in the adhering agent layer of the adhesive sheet made in multilayer laminated Examples and Comparative Examples.
The cylindrical body (height 0.5mm) that diameter 8mm is stamped out by the laminated body of obtained adhering agent layer, as sample.
For above-mentioned sample, on the basis of JIS K7244-1, determination of viscoelasticity device (Anton Paar GmbH system is used
Make, name of product " MCR 302 "), sticker continuous deformation 10% is made with condition below, is measured relaxation modulus G (t) (MPa).
Maximum relaxation modulus G (t) is being exported by the measurement resultmax(MPa) while, export is from being measured to maximum relaxation modulus G
(t)maxStart the minimum relaxation modulus G (t) measured in a period of until after 3757 secondsmin(MPa)。
Measuring temperature: 25 DEG C
Measuring point: 1000 points (logarithmic curve)
According to public formula (I) below, by obtained maximum relaxation modulus G (t)max(MPa) and minimum relaxation modulus G (t)min
(MPa) relaxation modulus change value Δ logG (t) is calculated.Show the result in table 1.
Δ logG (t)=logG (t)max-logG(t)min…(I)
[test example 2] (measurement of the dynamic modulus of elasticity)
The layer of thickness 0.5mm or so is made in the adhering agent layer of the adhesive sheet made in multilayer laminated Examples and Comparative Examples
Stack.The cylindrical body (height 0.5mm) that diameter 8mm is stamped out by the laminated body of obtained adhering agent layer, as sample.
For above-mentioned sample, on the basis of JIS K7244-1, determination of viscoelasticity device (Anton Paar GmbH system is used
Make, name of product " MCR 302 "), dynamic viscoelastic is measured with condition below, observes the storage modulus (G ') at 25 DEG C
(MPa), loss modulus (G ") (MPa) and loss tangent (tan δ).Show the result in table 1.
Measure frequency: 1Hz
Measuring temperature range: -20~150 DEG C
[test example 3] (static buckling test)
In the environment of 23 DEG C, 50%RH, light exfoliated stripping is removed from the adhesive sheet made in Examples and Comparative Examples
From piece, by the adhering agent layer of exposing fit in polyethylene terephthalate film (Toray Industries, Inc. manufacture,
Name of product " S10lumirror ", thickness: 12 μm) a face on.Then, removing re-releases type stripping film, by the viscous of exposing
Oxidant layer fit in another polyethylene terephthalate film (Toray Industries, Inc. manufacture, name of product
" S10lumirror ", thickness: 12 μm) a face on.Then, it is manufactured using Kurihara Manufactory Co., Ltd.
Autoclave (auto clave) pressurize at 0.5MPa, 50 DEG C after twenty minutes, placed under conditions of 23 DEG C, 50%RH 24 small
When.The laminated body being made of PET film/adhering agent layer/PET film obtained through the above way is cut into 200mm × 50mm, it will
It is as test film.
In the environment of 23 DEG C, 50%RH, as shown in figure 3, the test film made is with curved state in two set up
Piece by glass plate form holding plate (mutual spacing from: kept for 24 hours between 6mm).After carrying out the static buckling test, such as Fig. 4
It is shown, test film is placed on plate, after just completing test, after test 30 minutes and after test 24 hours, is measured from flat
Plate surface to bending section (variant part) apex portion height h, and as static buckling deflection.Based on the quiet of measurement
State bending deformation quantity, according to following benchmark evaluation static buckling.In addition, passing through in test film (embodiment) after experiment
Whether the adhering agent layer of visual confirmation bending section and the interface of adherend remove.Show the result in table 1.
◎: the deflection after just having completed bend test is 1mm or less
〇: the deflection after just having completed bend test is more than 1mm and is 3mm hereinafter, the deflection after test 30 minutes is
1mm or less
△: the deflection after just having completed bend test is more than 3mm and is 6mm hereinafter, the deflection after test 30 minutes is
5mm is hereinafter, the deflection after test 24 hours is 1mm or less
×: than that described above the case where
[test example 4] (dynamic bending test)
The laminated body being made of PET film/adhering agent layer/PET film obtained in mode identical with test example 3 is cut into
150mm × 50mm, as test film.As shown in figure 5, the both ends of obtained test film are fixed on plane body zero load U
On the two panels holding plate of shape elongation test machine (manufacture of YUASA SYSTEM Co., Ltd., name of product " DLDMLH-FS ").So
Afterwards, in the environment of 23 DEG C, 50%RH, with bending diameterStroke 80mm, rate of bending 30rpm, are bent test film
30000 times.
After carrying out above-mentioned dynamic bending test, as shown in figure 4, test film is placed on plate, examination is completed rigid
The height h of measurement apex portion of (variant part) from planar surface to bending section after testing and after test 24 hours, and as
Dynamic bending deflection.Dynamic bending deflection based on measurement, according to benchmark evaluation dynamic bending below.In addition,
In test film (embodiment) after test, confirm whether the adhering agent layer of bending section and the interface of adherend are removed by visual observation.
Show the result in table 1.
◎: the deflection after just having completed bend test is 0mm
〇: the deflection after just having completed bend test is 1mm hereinafter, the deflection after test 24 hours is 0mm
△: the deflection after just having completed bend test is more than 1mm and is 3mm hereinafter, the deflection after test 24 hours is
1mm or less
×: than that described above the case where
[test example 5] (measurement of adhesion strength)
Light exfoliated stripping film is removed from the adhesive sheet made in embodiment, the adhering agent layer of exposing, which is fitted in, to be had
Polyethylene terephthalate (PET) film (manufacture of TOYOBO Co., Ltd., the name of product " PET of easy adhesive layer
A4300 ", thickness: 100 μm) easy adhesive layer on, obtain re-releasing type stripping film/adhering agent layer/PET film laminated body.Will
To laminated body be cut into 25mm wide, 100mm long.
In the environment of 23 DEG C, 50%RH, removing re-releases type stripping film from above-mentioned laminated body, by the sticker of exposing
Layer is attached in soda-lime glass (Nippon Sheet Glass Co., Ltd manufacture), is placed in the environment of 23 DEG C, 50%RH
30 minutes, using cupping machine (ORIENTEC CORPORATION manufacture, TENSILON), peeling rate 300mm/min,
Under conditions of peel angle 180 degree, the laminated body of PET film and adhering agent layer and the adhesion of measurement at this time are removed from soda-lime glass
Power (N/25mm).The condition for not being recorded in this is measured on the basis of JIS Z0237:2009.Show the result in table 1.
As shown in Table 1, the adhering agent layer of the adhesive sheet of embodiment is being bonded two bendability components and is carrying out alternating bending
When, and when being placed in long-time bending state, bending state alleviation effects are excellent.In addition, the adhesive sheet of embodiment 3,5~10
Adhering agent layer interface peel inhibitory effect it is also excellent.
Industrial applicibility
The present invention is suitable for being bonded the bendability component (such as various films) for constituting alternating bending device and another
Bendability component (such as display element).
Claims (10)
1. a kind of alternating bending device sticker, it is used to be bonded a bendability component for constituting alternating bending device and another
One bendability component, which is characterized in that
On the basis of JIS K7244-1, it is set as the maximum relaxation modulus value measured when sticker deformation 10% most
Big relaxation modulus G (t)max(MPa), from being measured to the maximum relaxation modulus G (t)maxStart persistently to make institute until after 3757 seconds
Sticker deformation 10% is stated, the smallest relaxation modulus value measured during this period is set as minimum relaxation modulus G (t)min(MPa),
By following formula (I) calculate relaxation modulus change value Δ logG (t) be 0.85 hereinafter,
Δ logG (t)=logG (t)max-logG(t)min…(I)。
2. alternating bending device sticker according to claim 1, which is characterized in that by using JIS K7244-1 as base
The loss tangent (tan δ) at 25 DEG C that quasi- Measurement of Dynamic Viscoelasticity obtains is 0.328 or more, 0.85 or less.
3. alternating bending device sticker according to claim 1, which is characterized in that the storage modulus at 25 DEG C
(G ') is 0.01MPa or more, 0.25MPa or less.
4. alternating bending device sticker according to claim 1, which is characterized in that the loss modulus at 25 DEG C
(G ") is 0.005MPa or more, 0.1MPa or less.
5. alternating bending device sticker according to claim 1, which is characterized in that the sticker is by containing
Sticker made of the crosslinking of the adherence composition of (methyl) acrylate polymer (A) and crosslinking agent (B).
6. a kind of adhesive sheet has for being bonded the bendability component and another bendability that constitute alternating bending device
The adhering agent layer of component, which is characterized in that
The adhering agent layer is constituted by alternating bending device according to any one of claims 1 to 5 with sticker.
7. adhesive sheet according to claim 6, which is characterized in that
The adhesive sheet has two panels stripping film,
The adhering agent layer is clamped in a manner of with the removing face contact of the two panels stripping film by the stripping film.
8. a kind of alternating bending laminate component, has: constituting a bendability component of alternating bending device and another is curved
Song component and the adhering agent layer for being bonded to each other one bendability component and another described bendability component,
It is characterized in that,
The adhering agent layer is the adhering agent layer of adhesive sheet as claimed in claim 6.
9. alternating bending laminate component according to claim 8, which is characterized in that one bendability component and described
At least one of another bendability component is display element.
10. a kind of alternating bending device, which is characterized in that have alternating bending laminate component according to any one of claims 8.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-243308 | 2017-12-19 | ||
| JP2017243308A JP7058995B2 (en) | 2017-12-19 | 2017-12-19 | Adhesives for repetitive bending devices, adhesive sheets, repetitive bending laminated members and repetitive bending devices |
| JP2017-243306 | 2017-12-19 | ||
| JP2017243306A JP7185396B2 (en) | 2017-12-19 | 2017-12-19 | Adhesive sheet, repeated bending laminated member and repeatedly bending device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109929491A true CN109929491A (en) | 2019-06-25 |
Family
ID=66984563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811330527.5A Pending CN109929491A (en) | 2017-12-19 | 2018-11-09 | Alternating bending device sticker, adhesive sheet, alternating bending laminate component and alternating bending device |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102578457B1 (en) |
| CN (1) | CN109929491A (en) |
| TW (1) | TWI786193B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621246A (en) * | 2019-02-27 | 2020-09-04 | 琳得科株式会社 | Adhesive for repeatedly bending device, adhesive sheet, repeatedly bending laminated member, and repeatedly bending device |
| CN113583582A (en) * | 2020-04-30 | 2021-11-02 | 华为技术有限公司 | Protection film, protection film subassembly, display screen subassembly and terminal |
| CN116656282A (en) * | 2023-08-01 | 2023-08-29 | 广州鹿山新材料股份有限公司 | High-temperature high-flexibility bonding composition layer and laminated structure |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897620A (en) * | 2012-12-27 | 2014-07-02 | 第一毛织株式会社 | Adhesive film and optical display including the same |
| CN105567137A (en) * | 2014-11-01 | 2016-05-11 | 三星Sdi株式会社 | Adhesive composition, adhesive film prepared from the same and display member including the same |
| CN105713538A (en) * | 2014-12-23 | 2016-06-29 | 三星Sdi株式会社 | Adhesive film and display member including the same |
| WO2016196541A1 (en) * | 2015-06-03 | 2016-12-08 | 3M Innovative Properties Company | Acrylic-based flexible assembly layer |
| WO2016196576A1 (en) * | 2015-06-03 | 2016-12-08 | 3M Innovative Properties Company | Acrylic block copolymer-based assembly layer for flexible displays |
| CN106349961A (en) * | 2015-07-16 | 2017-01-25 | 三星Sdi株式会社 | Adhesive film, optical member including the same, and optical display including the same |
| CN106433498A (en) * | 2015-08-10 | 2017-02-22 | 琳得科株式会社 | Adhesive sheet and display |
| WO2017086338A1 (en) * | 2015-11-20 | 2017-05-26 | 日東電工株式会社 | Optical laminated body and organic electroluminescence display device using same |
| CN107163865A (en) * | 2016-03-03 | 2017-09-15 | 三星Sdi株式会社 | Adhesive film, the optical element comprising it and the optical display comprising it |
| CN107828354A (en) * | 2016-09-16 | 2018-03-23 | 琳得科株式会社 | Flexible display sticker, adhesive sheet, flexible lamination part and flexible display |
| CN109642129A (en) * | 2016-08-15 | 2019-04-16 | 日东电工株式会社 | Flexible device used for image display adhesive phase, flexible device used for image display laminated body and flexible image display device |
| CN109796916A (en) * | 2017-11-16 | 2019-05-24 | 琳得科株式会社 | Alternating bending device sticker, adhesive sheet, alternating bending laminate component and alternating bending device |
| CN110050046A (en) * | 2016-12-02 | 2019-07-23 | 3M创新有限公司 | Low dielectric optical clear binder for flexible electronic displays |
| CN110461972A (en) * | 2017-03-23 | 2019-11-15 | 三菱化学株式会社 | Double-sided adhesive sheet, the laminated body with image display device composition component, laminated body form the application of adapter kit and double-sided adhesive sheet |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5346149A (en) * | 1976-10-08 | 1978-04-25 | Naka Tech Lab | Insect preventing screen with blind |
| KR101683312B1 (en) * | 2008-09-30 | 2016-12-06 | 데쿠세리아루즈 가부시키가이샤 | Anisotropic electroconductive adhesive and method for manufacturing connected structure using the anisotropic electroconductive adhesive |
| JP5649280B2 (en) * | 2009-01-28 | 2015-01-07 | リンテック株式会社 | Re-peeling pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet |
| JP2015174907A (en) | 2014-03-14 | 2015-10-05 | 綜研化学株式会社 | Adhesive composition, adhesive layer and adhesive sheet |
| JP2016000774A (en) | 2014-06-11 | 2016-01-07 | 大日本印刷株式会社 | Pressure sensitive adhesive sheet and bonded body using the same |
| JP2016002764A (en) | 2014-06-19 | 2016-01-12 | 日本合成化学工業株式会社 | Laminate, use thereof, and production method thereof |
| KR20160070940A (en) * | 2014-12-10 | 2016-06-21 | 동우 화인켐 주식회사 | Flexible conductive plate |
-
2018
- 2018-09-28 TW TW107134279A patent/TWI786193B/en active
- 2018-11-01 KR KR1020180132745A patent/KR102578457B1/en active IP Right Grant
- 2018-11-09 CN CN201811330527.5A patent/CN109929491A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897620A (en) * | 2012-12-27 | 2014-07-02 | 第一毛织株式会社 | Adhesive film and optical display including the same |
| CN105567137A (en) * | 2014-11-01 | 2016-05-11 | 三星Sdi株式会社 | Adhesive composition, adhesive film prepared from the same and display member including the same |
| CN105713538A (en) * | 2014-12-23 | 2016-06-29 | 三星Sdi株式会社 | Adhesive film and display member including the same |
| CN108064202A (en) * | 2015-06-03 | 2018-05-22 | 3M创新有限公司 | Flexible unit layer based on acrylic acid |
| WO2016196541A1 (en) * | 2015-06-03 | 2016-12-08 | 3M Innovative Properties Company | Acrylic-based flexible assembly layer |
| WO2016196576A1 (en) * | 2015-06-03 | 2016-12-08 | 3M Innovative Properties Company | Acrylic block copolymer-based assembly layer for flexible displays |
| CN106349961A (en) * | 2015-07-16 | 2017-01-25 | 三星Sdi株式会社 | Adhesive film, optical member including the same, and optical display including the same |
| CN106433498A (en) * | 2015-08-10 | 2017-02-22 | 琳得科株式会社 | Adhesive sheet and display |
| WO2017086338A1 (en) * | 2015-11-20 | 2017-05-26 | 日東電工株式会社 | Optical laminated body and organic electroluminescence display device using same |
| CN107163865A (en) * | 2016-03-03 | 2017-09-15 | 三星Sdi株式会社 | Adhesive film, the optical element comprising it and the optical display comprising it |
| CN109642129A (en) * | 2016-08-15 | 2019-04-16 | 日东电工株式会社 | Flexible device used for image display adhesive phase, flexible device used for image display laminated body and flexible image display device |
| CN107828354A (en) * | 2016-09-16 | 2018-03-23 | 琳得科株式会社 | Flexible display sticker, adhesive sheet, flexible lamination part and flexible display |
| CN110050046A (en) * | 2016-12-02 | 2019-07-23 | 3M创新有限公司 | Low dielectric optical clear binder for flexible electronic displays |
| CN110461972A (en) * | 2017-03-23 | 2019-11-15 | 三菱化学株式会社 | Double-sided adhesive sheet, the laminated body with image display device composition component, laminated body form the application of adapter kit and double-sided adhesive sheet |
| CN109796916A (en) * | 2017-11-16 | 2019-05-24 | 琳得科株式会社 | Alternating bending device sticker, adhesive sheet, alternating bending laminate component and alternating bending device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621246A (en) * | 2019-02-27 | 2020-09-04 | 琳得科株式会社 | Adhesive for repeatedly bending device, adhesive sheet, repeatedly bending laminated member, and repeatedly bending device |
| CN111621246B (en) * | 2019-02-27 | 2023-01-03 | 琳得科株式会社 | Adhesive for repeatedly bending device, adhesive sheet, repeatedly bending laminated member, and repeatedly bending device |
| CN113583582A (en) * | 2020-04-30 | 2021-11-02 | 华为技术有限公司 | Protection film, protection film subassembly, display screen subassembly and terminal |
| CN116656282A (en) * | 2023-08-01 | 2023-08-29 | 广州鹿山新材料股份有限公司 | High-temperature high-flexibility bonding composition layer and laminated structure |
| CN116656282B (en) * | 2023-08-01 | 2023-10-10 | 广州鹿山新材料股份有限公司 | High-temperature high-flexibility bonding composition layer and laminated structure |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20190074198A (en) | 2019-06-27 |
| KR102578457B1 (en) | 2023-09-14 |
| TWI786193B (en) | 2022-12-11 |
| TW201927959A (en) | 2019-07-16 |
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