CN106133084A - Double-faced pressure-sensitive adhesive sheet - Google Patents

Double-faced pressure-sensitive adhesive sheet Download PDF

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Publication number
CN106133084A
CN106133084A CN201480077665.0A CN201480077665A CN106133084A CN 106133084 A CN106133084 A CN 106133084A CN 201480077665 A CN201480077665 A CN 201480077665A CN 106133084 A CN106133084 A CN 106133084A
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CN
China
Prior art keywords
double
adhesive sheet
sensitive adhesive
duromer
faced pressure
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Granted
Application number
CN201480077665.0A
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Chinese (zh)
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CN106133084B (en
Inventor
荒井隆行
大桥仁
所司悟
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Lintec Corp
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Lintec Corp
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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
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; 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
    • 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
    • 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
    • C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
    • C09J183/04—Polysiloxanes
    • 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
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • 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
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/255—Polyesters
    • 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
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • 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
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • 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
    • C09J2301/124—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 on both sides of the carrier, e.g. double-sided adhesive tape
    • C09J2301/1242—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 on both sides of the carrier, e.g. double-sided adhesive tape the opposite adhesive layers being different
    • 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
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
    • 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
    • C09J2433/00—Presence of (meth)acrylic polymer
    • 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
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00—Presence of polysiloxane
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Abstract

The double-faced pressure-sensitive adhesive sheet (1) of the present invention, it is bonding that it is used between the first duromer (4) with the second duromer (5), wherein, double-faced pressure-sensitive adhesive sheet (1) possesses: the first bonding plane (11S), and it is adhered to the first duromer (4)；And second bonding plane (12S), it is adhered to the second duromer (5), when the first bonding plane (11S) is set to F1 relative to the adhesion strength of the first duromer (4), and when the second bonding plane (12S) is set to F2 relative to the adhesion strength of the second duromer (5), F1 is 0.0001～0.1 relative to the ratio i.e. F1/F2 of F2.The re-workability of this double-faced pressure-sensitive adhesive sheet (1) is excellent, when peeling off the first duromer (4) and the second duromer (5) that use this double-faced pressure-sensitive adhesive sheet (1) to fit, it is possible at least make the first duromer (4) peel off recyclingly.

Description

Double-faced pressure-sensitive adhesive sheet
Technical field
The present invention relates to a kind of bonding double-faced pressure-sensitive adhesive sheet between multiple duromers.
Background technology
In recent years, the various mobile electronic devices such as mobile phone, tablet PC terminal possess and employ display body module Display, described display body module has liquid crystal cell, light emitting diode (LED element), organic electroluminescent (organic EL) Element etc..
In display as above, use double-faced pressure-sensitive adhesive sheet that light polarizing film etc. fits in display body module, but carry out During this laminating, bonding position deviates sometimes.Here, owing to display body Module Price is high, the most generally recycle.Cause And, above-mentioned adhesive sheet is required the re-workability (リ ワ Network) can peeled off, so as to recycling from display body module Display body module.Therefore, patent documentation 1 and 2 proposes the double-faced pressure-sensitive adhesive sheet with re-workability.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Patent Publication 2004-231723 publication
Patent documentation 2: Japanese Patent Publication 2013-32483 publication
Summary of the invention
(1) to solve the technical problem that
In recent years, aforementioned display device becomes the situation of touch panel mode and is also being gradually increased, now, in display body module Face side be provided with the touch panel comprising glass plate, plastic plate.When these display body modules of laminating and touch panel, make Also be gradually increased by the situation of double-faced pressure-sensitive adhesive sheet, but as described above by double-faced pressure-sensitive adhesive sheet laminating hard material (duromer) that Each other or thin film is more difficult with the situation of duromer than attaching film for this situation, and yield rate during laminating easily declines.
Thus, in these cases, two duromers are peeled off so as to recycle the necessity of display body module more Height, but two duromers peeling through double-faced pressure-sensitive adhesive sheet laminating are extremely difficult.Adhesive sheet disclosed in patent documentation 1 is only In view of stripping film re-workability each other or in the case of thin film and duromer, it is difficult to peel off two duromers.Though it addition, So the adhesive sheet disclosed in patent documentation 2 allows for peeling off the adhesive sheet of the situation of two duromers, but its re-workability is also Insufficient.
The present invention completes in view of as above practical situation, its object is to, it is provided that excellent double of a kind of re-workability Face adhesive sheet, it is bonding that it is used between the first duromer and the second duromer for recycling, uses this sticker when peeling off When the first duromer of laminating conjunction and the second duromer, it is possible to make the first duromer peel off recyclingly.
(2) technical scheme
To achieve these goals, first, the present invention provides a kind of double-faced pressure-sensitive adhesive sheet, and it is used for the first duromer and second Bonding between duromer, it is characterised in that described double-faced pressure-sensitive adhesive sheet possesses: the first bonding plane, it is adhered to described first hard Plastid or be positioned at than described double-faced pressure-sensitive adhesive sheet more by the parts on described first hard side；And second bonding plane, it is adhered to Described second duromer or be positioned at than described double-faced pressure-sensitive adhesive sheet more by the parts on described second hard side, when gluing described first The face that relative to described first duromer or is positioned at than described double-faced pressure-sensitive adhesive sheet more by parts viscous on described first hard side Put forth effort to be set to F1, and described second bonding plane relative to described second duromer or is positioned at than described double-faced pressure-sensitive adhesive sheet more by institute When the adhesion strength of the parts stating the second hard side is set to F2, the described F1 ratio (F1/F2) relative to described F2 be 0.0001～ 0.1 (invention 1).
The double-faced pressure-sensitive adhesive sheet of foregoing invention (invention 1), by adhesion strength ratio defined above, at least to the first duromer again Excellent in workability.Thus, when peeling off the first duromer and the second duromer that use the laminating of this double-faced pressure-sensitive adhesive sheet, it is possible at least Make the first duromer peel off recyclingly.
In foregoing invention (invention 1), it is preferable that described double-faced pressure-sensitive adhesive sheet possesses: the first adhering agent layer, it has described the One bonding plane；And second adhering agent layer, it has described second bonding plane (invention 2).
In foregoing invention (invention 2), the thickness of described first adhering agent layer is relative to the thickness of described second adhering agent layer Ratio be preferably 0.01～10 (invention 3).
In foregoing invention (invention 2,3), preferably it is provided with between described first adhering agent layer and described second adhering agent layer Core (invention 4).
In foregoing invention (invention 2～4), described first adhering agent layer is preferably glued by the organosilicon containing organopolysiloxane Agent and constitute (invention 5).
In foregoing invention (invention 5), described organosilicon sticker preferably comprises add-on type organopolysiloxane and comprises three The organopolysiloxane (invention 6) of the siloxane unit of degree of functionality or four degrees of functionality.
In foregoing invention (invention 6), it is preferable that described add-on type organopolysiloxane is to make siloxane bond as main bone Frame and there is the organopolysiloxane of alkenyl and organic hydrogen polysiloxanes (organohydrogenpolysiloxane) reaction And obtain (invention 7).
In foregoing invention (invention 2～7), it is preferable that described first bonding plane of described first adhering agent layer according to JIS The adhesion strength to float glass of Z0237:2009 is 0.01～1N/25mm (invention 8).
In foregoing invention (invention 2～8), 100% modulus of described first adhering agent layer is preferably 0.3～1.5MPa and (sends out Bright 9).
In foregoing invention (invention 2～9), described second adhering agent layer is preferably by containing (methyl) acrylate polymer Acrylic compounds sticker or ultraviolet hardening sticker constitute (invention 10).
In foregoing invention (invention 4～10), described core is preferably made up of (invention 11) mylar.
In foregoing invention (invention 1～11), described first duromer is preferably display body module (invention 12).
In foregoing invention (invention 1～12), described second duromer preferably covers material (invention 13).
In foregoing invention (invention 1～13), described first duromer and described second duromer preferably constitute touch surface The parts (invention 14) of plate.
(3) beneficial effect
The re-workability of the double-faced pressure-sensitive adhesive sheet of the present invention is excellent, when peeling off the first hard using the laminating of this double-faced pressure-sensitive adhesive sheet When body and the second duromer, it is possible at least make the first duromer peel off recyclingly.
Accompanying drawing explanation
Fig. 1 is the profile of the double-faced pressure-sensitive adhesive sheet of an embodiment of the present invention.
Fig. 2 is the profile of the laminate using double-faced pressure-sensitive adhesive sheet the first duromer and the second duromer to be fitted.
Fig. 3 is by double-faced pressure-sensitive adhesive sheet, the first duromer and the second duromer to be fitted and made in embodiment/comparative example The plane graph of the laminate being made.
Detailed description of the invention
Hereinafter, embodiments of the present invention are illustrated.
As it is shown in figure 1, the side that the double-faced pressure-sensitive adhesive sheet 1 of present embodiment contacts with the release surface with two panels stripping film 2a, 2b Formula is clamped by this two panels stripping film 2a, 2b.Hereinafter, the laminate being made up of stripping film 2a, double-faced pressure-sensitive adhesive sheet 1 and stripping film 2b It is referred to as band stripping film double-faced pressure-sensitive adhesive sheet 3.
In present embodiment, above-mentioned stripping film 2a, 2b element not necessarily, it is when using double-faced pressure-sensitive adhesive sheet 1 It is stripped, removes.Additionally, the release surface of the stripping film in this specification refers to the surface in stripping film with fissility, it is Even if comprising to implement the surface of lift-off processing and lift-off processing is not carried out and displaying that any one in the surface of fissility.
As in figure 2 it is shown, the double-faced pressure-sensitive adhesive sheet 1 of present embodiment is by the first duromer 4 and the second hard for recycling In the laminate 10 of body 5 lamination, bonding between the first duromer 4 with the second duromer 5.This double-faced pressure-sensitive adhesive sheet 1 Can directly be adhered to the first duromer 4 and/or the second duromer 5, it is also possible to be adhered to the lamination portion in the first duromer 4 side Part and/or the lamination parts in the second duromer 5 side.I.e., in fig. 2, double-faced pressure-sensitive adhesive sheet 1 is directly adhered to the first duromer 4 And second duromer 5 both are directly fitted, but it is not limited to this.
It addition, " duromer " in this specification refers to that the Young's modulus measured according to JIS K7127:1999 is 10GPa Above material.Duromer can be made up of monolayer or single parts, it is also possible to is made up of multilamellar or multiple parts.For after In the case of person, as the object being made up of multilamellar or multiple parts, as long as meeting above-mentioned Young's modulus, though then this thing A part of layer or a part of parts of body are unsatisfactory for above-mentioned Young's modulus, and this object is referred to as duromer.
As in figure 2 it is shown, the double-faced pressure-sensitive adhesive sheet 1 of present embodiment possesses: the first bonding plane 11S, it is adhered to the first hard Body 4 or be positioned in obtained laminate 10 than this double-faced pressure-sensitive adhesive sheet 1 more by the first duromer 4 side parts (the most sometimes It is referred to as " the first hard body-side member ")；And the second bonding plane 12S, it is adhered to the second duromer 5 or at obtained lamination Body 10 is positioned at than this double-faced pressure-sensitive adhesive sheet 1 more by parts (hereinafter sometimes referred to " the second duromer sidepiece of the second duromer 5 side Part ").
In the double-faced pressure-sensitive adhesive sheet 1 of present embodiment, when by the first bonding plane 11S relative to duromer (such as glass plate) Adhesion strength is set to F1, and when the second bonding plane 12S is set to F2 relative to the adhesion strength of duromer (such as glass plate), F1 is relative Ratio (F1/F2) in F2 is 0.0001～0.1, preferably 0.0003～0.08, especially preferably 0.0005～0.05.
By the F1 ratio relative to F2 within the above range, when peeling off the first duromer 4 using double-faced pressure-sensitive adhesive sheet 1 laminating During with the second duromer 5, on the first bonding plane 11S of double-faced pressure-sensitive adhesive sheet 1 and the interface of the first duromer 4, double-faced pressure-sensitive adhesive sheet 1 Separating well with the first duromer 4, the first duromer 4 or the second duromer 5 will not be disrumpent feelings, or on the first duromer 4 Cull will not be produced.Thus, the first duromer 4 can at least be recycled.So, the F1 ratio relative to F2 is within the above range The re-workability of double-faced pressure-sensitive adhesive sheet 1 is the most excellent.
If the ratio that F1 is relative to F2 is less than 0.0001, then the adhesion strength of the first bonding plane 11S becomes too small, when using lamination During body 10 etc., unexpected stripping can occur on the interface of the first bonding plane 11S and the first duromer 4.On the other hand, if F1 phase For the ratio of F2 more than 0.1, then when peeling off the first duromer 4 and the second duromer 5, the second duromer 5 can be disrumpent feelings, or Cull can be produced, it is impossible to peel off into and can recycle the first duromer on first duromer 4.
About double-faced pressure-sensitive adhesive sheet 1, as long as the first bonding plane 11S and the second bonding plane 12S is configured to the F1 ratio relative to F2 Within the above range, can be made up of monolayer, it is also possible to be made up of multilamellar, it is also possible to by the indefinite multiple materials of interlayer Constitute.From the viewpoint of ease of manufacturing, as shown in Figures 1 and 2, double-faced pressure-sensitive adhesive sheet 1 is preferably provided with having the first bonding plane First adhering agent layer 11 and second adhering agent layer 12 with the second bonding plane 12S of 11S.It addition, from the behaviour of double-faced pressure-sensitive adhesive sheet 1 The property made viewpoint considers, is particularly preferably provided with core 13 between the first adhering agent layer 11 and the second adhering agent layer 12.Additionally, first Bonding plane 11S is the surface with the second adhering agent layer 12 opposite side in the first adhering agent layer 11, and the second bonding plane 12S is The surface with the first adhering agent layer 11 opposite side in two adhering agent layers 12.
Additionally, in test example described later, use glass plate as adherend i.e. duromer, measure adhesion strength and right Re-workability is evaluated, even if but think when use other materials is as adherend that is duromer, it is also possible to obtain identical Evaluation result.
1. double-faced pressure-sensitive adhesive sheet
(1) first adhering agent layer
As long as the first adhering agent layer 11 first bonding plane 11S is by the sticker meeting above-mentioned physical property (F1 ratio relative to F2) Constitute, specifically, preferably by containing organopolysiloxane, particularly preferably by containing add-on type organopolysiloxane ( Solidfied material) organosilicon sticker constitute.This organosilicon sticker readily satisfies above-mentioned physical property.
Add-on type organopolysiloxane be preferably using siloxane bond as main framing and the organic poly-silica with alkenyl Alkane and organic hydrogen polysiloxanes react and obtain.
Preferably, using siloxane bond, as main framing and to have the organopolysiloxane of alkenyl be with following average single The compound that unit's formula (1) represents, and for having the compound of at least two alkenyl in the molecule.
R1 aSiO(4-a)/2……(1)
(in formula, R1Carbon number 1～12, the non-substituted or replacement of preferably 1～8 for mutual identical or different kind Monovalent hydrocarbon,aIt is 1.5～2.8, is preferably 1.8～2.5, is more preferably the positive number of the scope of 1.95～2.05.)
As with above-mentioned R1Represent is bonded to the non-substituted of silicon atom or substituted monovalent hydrocarbon, such as, can enumerate second The alkenyls such as thiazolinyl, pi-allyl, acrylic, isopropenyl, cyclobutenyl, hexenyl, cyclohexenyl group, octenyl；Methyl, ethyl, The alkyl such as propyl group, isopropyl, butyl, isobutyl group, the tert-butyl group, amyl group, neopentyl, hexyl, cyclohexyl, octyl group, nonyl, decyl； The aryl such as phenyl, tolyl, xylyl, naphthyl；The aralkyl such as benzyl, phenethyl, phenylpropyl；With by former for the hydrogen of these groups Sub some or the group all obtained with replacements such as halogen atom, cyano group such as fluorine, bromine, chlorine, such as chloromethyl, chloropropyl, Bromoethyl, trifluoro propyl, cyanoethyl etc..As alkenyl, from the viewpoint of the length and productivity of hardening time, preferably second Thiazolinyl.
Organic hydrogen polysiloxanes has SiH base in the molecule.By alkenyl and organic hydrogen of above-mentioned organopolysiloxane The SiH base reaction of polysiloxanes, there is additive reaction, thus obtains add-on type organopolysiloxane in both.
Add-on type organopolysiloxane solidifies in the presence of platinum catalyst well, and the most above-mentioned organosilicon sticker is excellent Choosing is containing platinum catalyst.As platinum catalyst, the reaction of platinum black, platinum chloride, chloroplatinic acid, chloroplatinic acid and monovalent alcohol can be exemplified The misfit thing of thing, chloroplatinic acid and olefines, platinum diacetyl acetate etc..
The content of the platinum catalyst in above-mentioned organosilicon sticker is excellent relative to add-on type organopolysiloxane 100 mass parts Elect 0.01～3 mass parts, especially preferably 0.05～2 mass parts as.By the content of platinum catalyst within the above range, will not Coating is hindered to make add-on type organopolysiloxane solidify, it is possible to form the first adhering agent layer 11.
In order to not damage raising adhesion strength in the range of the purpose of the present invention, add-on type organopolysiloxane can contain Molecule comprises the organopolysiloxane (organic siliconresin) of the siloxane unit of three-functionality-degree or four degrees of functionality.
The organopolysiloxane of the siloxane unit comprising three-functionality-degree or four degrees of functionality in above-mentioned organosilicon sticker Content be preferably 10～200 mass parts, especially preferably 15～100 relative to add-on type organopolysiloxane 100 mass parts Mass parts, more preferably 20～80 mass parts.If comprising the organic poly-of the siloxane unit of three-functionality-degree or four degrees of functionality The content of siloxanes is too much, then the adhesion strength of the first adhering agent layer 11 likely rises and makes re-workability decline.
The thickness of the first adhering agent layer 11 is preferably 5～50 μm, especially preferably 10～40 μm, more preferably 15～ 35μm.It it is more than 5 μm by the thickness of the first adhering agent layer 11 such that it is able to the adhesion strength desired by performance.It addition, by the The thickness of one adhering agent layer 11 is below 50 μm such that it is able to be effectively prevented in manufacture process caused residual solvent or gas Being mixed into of bubble, it is possible to make the stability of adhesion strength and optical characteristics excellent.
In order to form the first adhering agent layer 11, as long as such as coating solution to be coated coating object (such as core 13), And carry out heating and making it solidify, described coating solution is for by add-on type organopolysiloxane, comprise three officials as required The organopolysiloxane of the siloxane unit of energy degree or four degrees of functionality and platinum catalyst butanone, toluene, ethyl acetate, diformazan Benzene equal solvent is diluted to the coating solution about 10～60 mass %.Heating-up temperature is preferably about 90～180 DEG C, heat time heating time It is preferably about 1～5 minute.
Here, the first bonding plane 11S of the first adhering agent layer 11 according to JIS Z0237:2009 to float glass Adhesion strength is preferably 0.01～1N/25mm, especially preferably 0.015～0.7N/25mm, and more preferably 0.02～0.5N/ 25mm.If above-mentioned adhesion strength is more than 0.01N/25mm, then when use laminate 10 time etc., it is possible to prevent at the first bonding plane Unexpected stripping is produced on the interface of 11S and the first duromer 4.If it addition, above-mentioned adhesion strength is below 1N/25mm, then first Adhering agent layer 11 obtains good maintenance relative to the fissility of adherend, it is possible to play excellent re-workability.Additionally, it is above-mentioned Shown in the concrete assay method of adhesion strength test example as be described hereinafter.
100% modulus of the first adhering agent layer 11 is preferably 0.3～1.5MPa, and especially preferably 0.4～1.2MPa enter one Step is preferably 0.5～1.0MPa.If 100% modulus is more than 0.3MPa, then the first adhering agent layer 11 gluing relative to adherend Attached property obtains good maintenance.If it addition, 100% modulus is below 1.5MPa, then when the first adhering agent layer 11 is attached at by During viscous thing, it is possible to prevent air from entering between them.
(2) second adhering agent layers
As long as the second adhering agent layer 12 second bonding plane 12S is by the sticker meeting above-mentioned physical property (F1 ratio relative to F2) Constitute, specifically, preferably by the acrylic compounds sticker containing (methyl) acrylate polymer or ultraviolet curing Type sticker is constituted.This sticker readily satisfies above-mentioned characteristic.
Aforesaid propylene acids sticker contains (methyl) acrylate polymer (a), preferably comprises this (methyl) acrylic acid Ester polymer (a) cross-links the material obtained by cross-linking agent (b).Additionally, in this manual, (methyl) acrylate refers to third Both olefin(e) acid ester and methacrylate.Other similar terms are the most identical.It addition, " polymer " also comprises " copolymer " Concept.It addition, from the viewpoint of easily adjusting adhesion strength, (methyl) acrylate polymer (a) does not the most have ultraviolet Line curable group.
In (methyl) acrylate polymer (a), as the monomer of this polymer of composition, preferably comprise the carbon atom of alkyl Number is (methyl) alkyl acrylate of 1～20.Thus, obtained sticker can manifest preferably cohesiveness.It addition, it is outstanding Its preferably, (methyl) acrylate polymer (a) be the carbon number of alkyl be 1～20 (methyl) alkyl acrylate, Have the monomer (containing reactive functional groups monomer) of the functional group reacted with cross-linking agent (b) and use as required other The copolymer of monomer.
As (methyl) alkyl acrylate that carbon number is 1～20 of alkyl, such as, can enumerate (methyl) propylene Acid methyl ester, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) n-butyl acrylate, (methyl) acrylic acid positive penta Ester, the most own ester of (methyl) acrylic acid, (methyl) 2-EHA, (methyl) Isooctyl acrylate monomer, (methyl) acrylic acid Just ester in the last of the ten Heavenly stems, (methyl) acrylic acid dodecyl ester, (methyl) acrylic acid myristyl ester, (methyl) acrylic acid cetyl Ester, (methyl) octadecyl acrylate etc..Wherein, from the viewpoint of improving cohesiveness further, the carbon number of alkyl It is preferably (methyl) acrylate of 1～8, particularly preferably (methyl) acrylic acid methyl ester., (methyl) n-butyl acrylate and (first Base) 2-EHA.It addition, they may be used alone, can also be used in combination two or more.
In (methyl) acrylate polymer (a), as the monomeric unit of this polymer of composition, preferably comprise 40～99 matter (methyl) alkyl acrylate that carbon number is 1～20 of the alkyl of amount %, particularly preferably containing 50～90 mass %, enters one Step preferably comprises 60～80 mass %.
As above-mentioned containing reactive functional groups monomer, it is preferable to enumerate the monomer (hydroxyl in intramolecular with hydroxyl Monomer), there is the monomer (carboxyl group-containing monomer) of carboxyl in intramolecular, there is in intramolecular the monomer (emulsion stability) of amino Deng.They may be used alone, can also be used in combination two or more.
As hydroxyl monomer, such as, can enumerate (methyl) acrylic acid 2-hydroxy methacrylate, (methyl) acrylic acid 2-hydroxyl Propyl ester, (methyl) acrylic acid 3-hydroxy propyl ester, (methyl) acrylic acid 2-hydroxybutyl, (methyl) acrylic acid 3-hydroxybutyl, (first Base) (methyl) hydroxyalkyl acrylates etc. such as acrylic acid 4-hydroxybutyl.Wherein, gather from obtained (methyl) acrylate The reactivity of the hydroxyl in compound (a) and cross-linking agent (b) and with the combined polymerization of other monomers from the viewpoint of, preferably (methyl) Acrylic acid 2-hydroxy methacrylate and (methyl) acrylic acid 4-hydroxybutyl.They may be used alone, can also be used in combination two kinds Above.
As carboxyl group-containing monomer, such as, can enumerate acrylic acid, methacrylic acid .beta.-methylacrylic acid, maleic acid, itaconic acid, lemon The ethylenically unsaturated carboxylic acids such as health acid.Wherein, the carboxyl from obtained (methyl) acrylate polymer (a) and cross-linking agent The reactivity of (b) and with the combined polymerization of other monomers from the viewpoint of, preferably acrylic acid.They can be used alone, it is possible to Two or more to be applied in combination.
As emulsion stability, such as, can enumerate (methyl) acrylate, (methyl) acrylic acid normal-butyl ammonia Base ethyl ester etc..They may be used alone, can also be used in combination two or more.
In (methyl) acrylate polymer (a), as the monomeric unit of this polymer of composition, preferably comprise 1～40 matter Amount % containing reactive functional groups monomer, particularly preferably containing 10～35 mass %, further preferably containing 20～30 mass %.
As other monomers above-mentioned, such as, can enumerate (methyl) methoxyethyl acrylate, (methyl) acrylic acid ethoxy (methyl) alkoxyalkyl acrylates such as base ethyl ester, (methyl) cyclohexyl acrylate etc. have (methyl) propylene of aliphatic ring The acrylamide of the non-crosslinkeds such as acid esters, acrylamide, Methacrylamide；(methyl) acrylic acid N, N-dimethylaminoethyl Ester, (methyl) acrylic acid N, the non-crosslinked such as N-dimethylamino propyl ester there is (methyl) acrylate of tertiary amino, acetic acid Vinyl acetate, styrene etc..They may be used alone, can also be used in combination two or more.
The polymeric species of (methyl) acrylate polymer (a) can be random copolymer, it is also possible to be block copolymer.
The weight average molecular weight of (methyl) acrylate polymer (a) be preferably 100,000～2,200,000, especially preferably 200,000～ 1800000, more preferably 400,000～1,600,000.Additionally, the weight average molecular weight in this specification is to pass through gel permeation chromatography (GPC) value of the polystyrene conversion that method measures.
Additionally, in aforesaid propylene acids sticker, (methyl) acrylate polymer (a) can be used alone one, also Can be applied in combination two or more.
As cross-linking agent (b), as long as the reactive functional groups can being had with (methyl) acrylate polymer (a) reacts , such as, can enumerate isocyanates cross-linking agent, epoxies cross-linking agent, amine cross-linking agent, melamine class cross-linking agent, nitrogen Third pyridine class cross-linking agent, hydrazine cross-linking agent, aldehyde crosslinking agent, oxazolines cross-linking agent, metal alkoxide class cross-linking agent, metal-chelating class Cross-linking agent, metallic salt cross-linking agent, ammonium salt class cross-linking agent etc..Among above-mentioned, had at (methyl) acrylate polymer (a) Reactive functional groups be hydroxyl in the case of, reactive excellent isocyanates cross-linking agent with hydroxyl is preferably used, when In the case of the reactive functional groups that (methyl) acrylate polymer (a) is had is carboxyl, be preferably used with carboxyl is anti- The epoxies cross-linking agent that answering property is excellent.It addition, cross-linking agent (b) can be used alone one, or it is applied in combination two or more.
Isocyanates cross-linking agent includes at least polyisocyanate compounds.As polyisocyanate compounds, such as may be used To enumerate the fragrance adoption isocyanides such as toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, XDI Acid esters；The aliphatic polymeric isocyanates such as hexamethylene diisocyanate；Isophorone diisocyanate, hydrogenated diphenyl methane two The ester ring type polyisocyanate such as isocyanates etc. and their biuret thing, isocyanuric acid ester thing and as with ethylene glycol, third The adduct etc. of the reactant containing low molecule active dydrogen compounds such as glycol, neopentyl glycol, trimethylolpropane, Oleum Ricini.Its In, from the reactivity of hydroxyl from the viewpoint of, preferably trimethylolpropane modified aromatic adoption isocyanates, particularly preferred three Hydroxymethyl-propane modified toluene diisocyanate and trimethylolpropane modification XDI.
As epoxies cross-linking agent, such as, can enumerate 1,3-pair (N, N '-diglycidyl amino methyl) hexamethylene, N, N, N ', N '-four glycidyl group-m-xylene diamine, Ethylene glycol diglycidyl ether, 1,6-HD 2-glycidyl Ether, trimethylolpropane diglycidyl ether, 2-glycidyl aniline, 2-glycidyl amine etc..
The usage amount of cross-linking agent (b) relative to (methyl) acrylate polymer (a) 100 mass parts be preferably 0.001～ 10 mass parts, especially preferably 0.01～1 mass parts, more preferably 0.05～0.5 mass parts.
If to containing comprising containing reactive functional groups monomer as (methyl) acrylic acid of monomeric unit constituting polymer The cohesiveness compositions of ester polymer (a) and cross-linking agent (b) carries out heating etc., then cross-linking agent (b) and composition (methyl) acrylic acid The reactive functional groups containing reactive functional groups monomer of ester polymer (a) reacts.Thus, (methyl) acrylate is formed The structure that polymer (a) is cross-linked by cross-linking agent (b), the cohesiveness of obtained adhering agent layer and intensity and durability obtain To improving.
In aforesaid propylene acids sticker, normally used various additive, such as refractive index can be added as required Regulator, antistatic additive, viscosifier, silane coupler, antioxidant, UV absorbent, light stabilizer, softening agent, filling Agent etc..
As above-mentioned ultraviolet hardening sticker, it is preferable that containing having ultra-violet solidified (methyl) acrylic acid Ester polymer or containing not having ultra-violet solidified (methyl) acrylate polymer and ultra-violet solidified compound, Particularly preferably possibly together with Photoepolymerizationinitiater initiater.
As having ultra-violet solidified (methyl) acrylate polymer, preferably it is imported with at side chain and there is (methyl) The addition acrylic polymer of the group of acryloyl group.This addition acrylic polymer, can be by using (first Base) acrylate and there is the copolymer of monomer of cross-linking functional group in intramolecular, make to have with (methyl) acryloyl group and The a part of reaction of the cross-linking functional group of compound and this copolymer of the group of cross-linking functional group's reaction and obtain.
As above-mentioned ultra-violet solidified compound, preferable weight-average molecular weight 50, the polyfunctional acrylic ester class of less than 000 The polyfunctional acrylic ester class monomer of oligomer or molecular weight less than 1000.
The thickness of the second adhering agent layer 12 is preferably 5～300 μm, especially preferably 10～200 μm, more preferably 15 ～150 μm.It it is more than 5 μm by the thickness of the second adhering agent layer 12, it is possible to the adhesion strength desired by performance.It addition, by the The thickness of two adhering agent layers 12 is below 300 μm, it is possible to prevent obtained laminate from becoming blocked up.
The thickness of the first adhering agent layer 11 is preferably 0.01～10 relative to the ratio of the thickness of the second adhering agent layer 12, especially It is preferably 0.05～5, and more preferably 0.1～3.By the ratio of both thickness within the above range, readily satisfy State characteristic (F1 ratio relative to F2), make the re-workability of double-faced pressure-sensitive adhesive sheet 1 become more excellent.
In the case of the second adhering agent layer 12 is made up of acrylic compounds sticker, in order to form the second adhering agent layer 12, By containing acrylic compounds sticker and contain the coating solution of solvent as required and coat coating object (such as stripping film 2b Release surface), and carry out heat treated and form film.In the case of during the film formed need not maintenance, directly Become the second adhering agent layer 12, during needs maintenance in the case of, during maintenance after become the second adhering agent layer 12.
Dried when can also be volatilized by the retarder thinner etc. making coating solution doubles as above-mentioned heat treated.Carry out In the case of heat treated, heating-up temperature is preferably 50～150 DEG C, especially preferably 70～120 DEG C.It addition, heat time heating time is excellent Elect as 30 seconds～10 minutes, especially preferably 50 seconds～2 minutes.After carrying out heat treated, may be set in room temperature as required Under (such as 23 DEG C, 50%RH) during the maintenance of about 1～2 week.
Contain at aforesaid propylene acids sticker and there is (methyl) acrylate polymer (a) of reactive functional groups and hand over In the case of connection agent (b), form (methyl) acrylate polymer (a) by above-mentioned heat treated and handed over by cross-linking agent (b) The structure of connection.
On the other hand, in the case of the second adhering agent layer 12 is made up of ultraviolet hardening sticker, in order to form Two adhering agent layers 12, by containing ultraviolet hardening sticker and contain the coating solution of solvent as required and coat coating Object (the such as release surface of stripping film 2b), and carry out heat treated and form film.Afterwards, to film irradiation ultraviolet radiation, make Ultraviolet hardening sticker solidifies and makes the second adhering agent layer 12.
Here, the second bonding plane 11S of the second adhering agent layer 12 according to JIS Z0237:2009 to float glass Adhesion strength is preferably 1～50N/25mm, especially preferably 2～40N/25mm, and more preferably 5～30N/25mm.If it is above-mentioned Adhesion strength is more than 1N/25mm, then when use laminate 10 time etc., it is possible to prevent at the second bonding plane 12S and the second duromer 5 Interface on produce unexpected stripping.On the other hand, if above-mentioned adhesion strength is more than 50N/25mm, then duromer 5 also wants to carry out During recycling, sometimes produce cull in duromer 5 side and cannot recycle.
(3) core
Core 13 gives rigidity to improve the operability of double-faced pressure-sensitive adhesive sheet 1 to double-faced pressure-sensitive adhesive sheet 1.This core 13 is preferably by moulding Material thin film is constituted.As the kind of plastic sheeting, such as, can enumerate by polyethylene terephthalate, poly terephthalic acid The mylar of the polyester such as butanediol ester, PEN composition, polyurethane film, polyethylene film, polypropylene The cellulose membrane such as thin film, triacetyl cellulose；Polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol film, second Alkene-vinyl acetate copolymer thin film, polystyrene film, polycarbonate film, acrylic resin films, norborneol alkenes tree The plastic sheetings such as membrane of lipoprotein, cyclic olefin resins thin film；These two or more laminate etc..Plastic sheeting can be with uniaxial extension Or two axle extend.Among those, preferably mylar, particularly preferred pet film.
In the core 13 being made up of as above plastic sheeting, glue with the first adjacent adhering agent layer 11 and/or second to improve For the purpose of the adhesiveness etc. of oxidant layer 12, as required can one or both sides implement surface based on oxidizing process etc. process or Prime treatment.As above-mentioned oxidizing process, such as, can enumerate Corona discharge Treatment, plasma-based discharge process, chromium oxidation processes (wet Formula), flame treatment, hot blast process, ozone/ultraviolet treatment with irradiation etc..These surface preparations can be according to plastic sheeting Kind properly selects, but from the standpoint of effect and operability, it is generally preferable to utilize Corona discharge Treatment method.
From the viewpoint of the operability improving double-faced pressure-sensitive adhesive sheet 1, the thickness of core 13 is preferably 2～250 μm, the most excellent Elect 5～125 μm, more preferably 10～75 μm as.
2. stripping film
It is not particularly limited as stripping film 2a, 2b, it is possible to use known plastic sheeting.It is, for example possible to use it is poly- Vinyl film, polypropylene film, polybutene thin film, polybutadiene membrane, poly-methyl pentene film, polyvinyl chloride film, chloroethene Alkene copolymer thin film, pet film, PEN thin film, poly terephthalic acid fourth two Alcohol ester film, polyurethane film, ethylene vinyl acetate thin film, ionomer resin thin film, ethylene-(methyl) acrylic copolymer Thin film, ethylene-(methyl) acrylate copolymer thin film, polystyrene film, polycarbonate film, Kapton, fluorine Resin film etc..Alternatively, it is also possible to use their crosslinked film.Furthermore it is also possible to be their laminated film.
In the release surface (surface especially contacted) of above-mentioned stripping film 2a, 2b, preferably implement stripping with double-faced pressure-sensitive adhesive sheet 1 From processing (wherein, when adhering agent layer 11 is organosilicon sticker, it is also preferred that directly use the plastics that lift-off processing is not carried out thin Film).As the remover used in lift-off processing, such as, can enumerate alcohol acids, silicone, fluorine class, unsaturated polyester (UP) Class, TPO, the remover of wax class.Additionally, in stripping film 2a, 2b, it is preferable that a stripping film is set to peeling force bigger The exfoliated stripping film of weight, another stripping film is set to the light exfoliated stripping film that peeling force is less.
Thickness about stripping film 2a, 2b is not particularly limited, but usually about 20～150 μm.
3. the manufacture of band stripping film double-faced pressure-sensitive adhesive sheet
As a manufacture example of band stripping film double-faced pressure-sensitive adhesive sheet 3, the one side at core 13 forms the first adhering agent layer 11 Afterwards, by stripping film 2a exposed surface laminated on adhering agent layer 11 in the way of its release surface contacts, as the first lamination Body.On the other hand, the release surface at stripping film 2b forms the second adhering agent layer 12, as the second laminate.Then, with The mode of the core 13 of one laminate and the second adhering agent layer 12 overlap of the second laminate fit the first laminate and second amass Layer body, obtains band stripping film double-faced pressure-sensitive adhesive sheet 3.
4. the use of double-faced pressure-sensitive adhesive sheet
Laminate 10 shown in Fig. 2 is to use the laminating of above-mentioned double-faced pressure-sensitive adhesive sheet 1 for the first duromer 4 and second of recycling Duromer 5 and the laminate that obtains.That is, laminate 10 is by first duromer the 4, second duromer 5 and between them double Face adhesive sheet 1 is constituted.
Double-faced pressure-sensitive adhesive sheet 1 in present embodiment possesses the first adhering agent layer 11, core 13 and the second adhering agent layer 12, the The first bonding plane 11S in one adhering agent layer 11 is adhered to the first duromer 4, the second bonding plane in the second adhering agent layer 12 12S is adhered to the second duromer 5.
As the first duromer 4 for recycling, such as, can enumerate the parts that price is high, specifically can enumerate display body Module, solar module etc..As display body module, such as, can enumerate liquid crystal (LCD) module, light emitting diode (LED) module, organic electroluminescent (organic EL) module, Electronic Paper etc..It addition, at the double-faced pressure-sensitive adhesive sheet 1 of this display body module Side can be provided with various functional layer (nesa coating etc.).
As the material of the part contacted with double-faced pressure-sensitive adhesive sheet 1 in upper-part be typically glass plate, plastic plate, metallic plate, Semiconductor board etc., preferably glass plate.
It addition, as the second duromer 5, such as can enumerate glass plate, plastic plate, metallic plate, semiconductor board or they Laminate etc., preferably glass plate.
It is not particularly limited as above-mentioned glass plate, such as, can enumerate chemically reinforced glass, alkali-free glass, quartz glass Glass, soda-lime glass, baric/strontium glass, alumina silicate glass, lead glass, borosilicate glass, barium borosilicate glass etc..Glass The thickness of glass plate is not particularly limited, but usually 0.1～5mm, preferably 0.2～2mm.
It is not particularly limited as above-mentioned plastic plate, such as, can enumerate third be made up of polymethyl methacrylate etc. Olefin(e) acid plate, polycarbonate plate etc..The thickness of plastic plate is not particularly limited, but usually 0.2～5mm, preferably 0.4～ 3mm。
Additionally, the one or both sides at above-mentioned glass plate or plastic plate can be provided with various functional layer (nesa coating, gold Belong to layer, silica layer, hard conating, antiglare layer etc.), it is also possible to it is formed with metal wiring, it is also possible to lamination has optics.
As above-mentioned optics, such as, can enumerate Polarizer (light polarizing film), polarizer, polarizer (phase contrast Film), compensation film for angular field of view, brightness enhancement film, contrast improve film, liquid crystalline polymer film, diffusion barrier, hard coating film, semipermeable reflection film Deng.
In order to manufacture above-mentioned laminate 10, as an example, first, a stripping of release band stripping film double-faced pressure-sensitive adhesive sheet 3 Sheet 2b, the second adhering agent layer 12 and the second hard plate 5 that laminating is exposed.Then, another is peeled off from band stripping film double-faced pressure-sensitive adhesive sheet 3 Individual stripping film 2a, the first adhering agent layer 11 and the first hard plate 4 that laminating is exposed.
In the laminate 10 manufactured as described above, when there is deviation in bonding position, need the first duromer 4 and second Duromer 5 is peeled off.In this laminate 10, if the first duromer 4 and the second duromer 5 are peeled off, then at double-faced pressure-sensitive adhesive sheet 1 On the first bonding plane 11S of (the first adhering agent layer 11) and the interface of the first duromer 4, double-faced pressure-sensitive adhesive sheet 1 (the first adhering agent layer 11) and the first duromer 4 separates well, and the first duromer 4 or the second duromer 5 will not be disrumpent feelings, or at the first duromer 4 On will not produce cull.Thus, the first duromer 4 can at least be recycled.So, the double-faced pressure-sensitive adhesive sheet 1 of present embodiment Re-workability is the most excellent.
Laminate 10 in present embodiment is touch panel, the especially preferably touch panel of electrostatic capacitance mode, because of And, the first duromer 4 and the second duromer 5 are preferably the parts constituting touch panel.In this case, the first duromer 4 Being preferably display body module or the parts comprising display body module, the second duromer 5 is preferably and is made up of glass plate or plastic plate Cover material or comprise cover material parts.Second duromer 5 can also is that and is provided with sensor function on covering material (covering the circuit being formed with nesa coating on material) covering material one-piece type sensor (OGS:One Glass Solution)。
In Fig. 2 although not shown, but can be between double-faced pressure-sensitive adhesive sheet 1 and the first duromer 4 in laminate 10 and/or double It is provided with one or more layers touch panel thin film sensor between face adhesive sheet 1 and the second duromer 5.Furthermore it is possible in multilamellar Thin film sensor between be provided with desired adhering agent layer.Thin film sensor such as by base film and patterned by stannum The nesa coating that doped indium oxide (ITO) is constituted is constituted.
Embodiments described above, for the ease of understanding that the present invention records, is not intended to limit the present invention.Cause And, purport is, each key element disclosed in above-mentioned embodiment also comprises all design alterations of the technical scope belonging to the present invention And equipollent.
For example, it is possible to any one in stripping film 2a, 2b in saving slightly stripping film double-faced pressure-sensitive adhesive sheet 3.It addition, long-pending Can exist between double-faced pressure-sensitive adhesive sheet 1 and the first duromer in layer body 10 and/or between double-faced pressure-sensitive adhesive sheet 1 and the second duromer Miscellaneous part.
Embodiment
Hereinafter, by embodiment, the present invention is carried out the brightest, but the scope of the present invention is not limited to These embodiments.
(manufacturing example 1)
Mixing is by the organopolysiloxane that as main framing and siloxane bond is had vinyl and organic hydrogen polysiloxanes (Shin-Etsu Chemical Co., Ltd. (chemistry work society of SHIN-ETSU HANTOTAI) makes the add-on type organopolysiloxane constituted, commodity Name: KS-847H) 100 mass parts (solids content scaled value；The most identical), comprise three-functionality-degree or the siloxanes of four degrees of functionality Organopolysiloxane (the organic siliconresin of unit；Dow Corning Toray Co., Ltd. (レ ダ ウ conning Society) system, trade name: SD-4584) 20 mass parts and platinum catalyst (Dow Corning Toray Co., Ltd. system, trade name: SRX-212) 1.5 mass parts being sufficiently stirred for, and dilute with butanone, thus obtain sticker coating fluid.
Use scraper type coating machine, obtained sticker coating fluid is coated with in the way of making dried thickness become 25 μm It is distributed in polyethylene terephthalate (PET) thin film (TOYOBO Co., Ltd. (ocean society) system, the PET as core A4300, thickness: 38 μm) one side after, heat treated 2 minutes at 120 DEG C, form be made up of organosilicon sticker viscous Oxidant layer (organosilicon adhering agent layer A).Then, be used as stripping film is not carried out the untreated of lift-off processing or easy bonding process PET film (Toray Industries, Inc. (レ society) make, T60, thickness: 50 μm) protection organosilicon adhering agent layer A's is viscous Face.
(manufacturing example 2)
Mixing is by the organopolysiloxane that as main framing and siloxane bond is had vinyl and organic hydrogen polysiloxanes Add-on type organopolysiloxane (Shin-Etsu Chemical Co., Ltd. system, trade name: KS-847H) 100 mass constituted Part, comprise the organopolysiloxane (organic siliconresin of the siloxane unit of three-functionality-degree or four degrees of functionality；Dow Corning Toray Co., Ltd. system, trade name: SD-4584) 50 mass parts and platinum catalyst (Dow Corning Toray Co., Ltd. System, trade name: SRX-212) 1.5 mass parts being sufficiently stirred for, and dilute with butanone, thus obtain sticker coating fluid.
Use scraper type coating machine, obtained sticker coating fluid is coated with in the way of making dried thickness become 25 μm It is distributed in the pet film (TOYOBO Co., Ltd. system, PET A4300, thickness: 38 μm) as core One side after, heat treated 2 minutes at 120 DEG C, formed be made up of organosilicon sticker adhering agent layer (organosilicon adhere Oxidant layer B).Afterwards, be used as stripping film, lift-off processing is not carried out or the untreated PET film (Toray of easy bonding process Industries, Inc. system, T60, thickness: 50 μm) bonding plane of protection organosilicon adhering agent layer B.
(manufacturing example 3)
N-butyl acrylate (BA) 90 mass parts and acrylic acid (AA) 10 mass parts combined polymerization is made to prepare (methyl) propylene Acid ester polymer.Utilizing method described later to measure the molecular weight being somebody's turn to do (methyl) acrylate polymer, result weight average molecular weight is 500000.
Mix (methyl) acrylate polymer 100 mass parts obtained in above-mentioned operation and as epoxies cross-linking agent 1,3-pair (N, N '-diglycidyl amino methyl) hexamethylene (Mitsubishi Gas Chemical Company (Rhizoma Sparganii ガ ス chemistry society) system, TERAD-C) 0.05 mass parts being sufficiently stirred for, and dilute with ethyl acetate, thus obtain sticker Coating fluid.
Use scraper type coating machine, obtained sticker coating fluid is coated with in the way of making dried thickness become 25 μm It is distributed in the stripping film that the one side silicone remover of pet film is carried out lift-off processing (LINTEC Corporation (リ ンテック society) system, SP-PET3811, thickness: 38 μm) lift-off processing face after, 90 Heat treated 1 minute at DEG C, forms the adhering agent layer (acrylic acid adhering agent layer A) being made up of acrylic acid sticker.
(manufacturing example 4)
Use scraper type coating machine, the sticker coating fluid obtained in example 3 will be manufactured so that dried thickness becomes 50 μm Mode coat the stripping that the one side silicone remover of pet film is carried out lift-off processing After the lift-off processing face of sheet (LINTEC Corporation system, SP-PET3811, thickness: 38 μm), heat at 90 DEG C Process 2 minutes, form the adhering agent layer (acrylic acid adhering agent layer A ') being made up of acrylic acid sticker.
(manufacturing example 5)
Make n-butyl acrylate (BA) 60 mass parts, acrylic acid methyl ester. (MA) 20 mass parts and acrylic acid 2-hydroxy methacrylate (HEA) 20 mass parts combined polymerizations and prepare (methyl) acrylate polymer.Utilizing method described later to measure should (methyl) propylene The molecular weight of acid ester polymer, result weight average molecular weight is 600,000.
Mix (methyl) acrylate polymer 100 mass parts obtained in above-mentioned operation and cross-link as isocyanates The trimethylolpropane modified toluene diisocyanate (TDI of agent；Soken Chemical&Engineering Co., Ltd. (combine Grind chemistry society) system, L-45) 0.2 mass parts being sufficiently stirred for, and dilute with ethyl acetate, thus obtain sticker coating fluid.
Use scraper type coating machine, obtained sticker coating fluid is coated with in the way of the dried thickness of formula becomes 25 μm It is distributed in the stripping film that the one side silicone remover of pet film is carried out lift-off processing After the lift-off processing face of (LINTEC Corporation system, SP-PET3811, thickness: 38 μm), heat treated 1 at 90 DEG C Minute, form the adhering agent layer (acrylic acid adhering agent layer B) being made up of acrylic acid sticker.
(manufacturing example 6)
Make 2-EHA (2EHA) 70 mass parts, methyl methacrylate (MA) 10 mass parts and acrylic acid 2- Hydroxy methacrylate (HEA) 20 mass parts combined polymerization and prepare (methyl) acrylate polymer.Utilizing method described later to measure should (first Base) molecular weight of acrylate polymer, result weight average molecular weight is 600,000.
Mix (methyl) acrylate polymer 100 mass parts obtained in above-mentioned operation and cross-link as isocyanates The trimethylolpropane modified toluene diisocyanate (TDI of agent；Soken Chemical&Engineering Co., Ltd. system, L-45) 0.2 mass parts being sufficiently stirred for, and dilute with ethyl acetate, thus obtain sticker coating fluid.
Use scraper type coating machine, obtained sticker coating fluid is coated with in the way of making dried thickness become 25 μm It is distributed in the stripping film that the one side silicone remover of pet film is carried out lift-off processing After the lift-off processing face of (LINTEC Corporation system, SP-PET3811, thickness: 38 μm), heat treated 1 at 90 DEG C Minute, form the adhering agent layer (acrylic acid adhering agent layer C) being made up of acrylic acid sticker.
(manufacturing example 7)
N-butyl acrylate (BA) 99 mass parts and acrylic acid 4-hydroxybutyl (4HBA) 1 mass parts combined polymerization is made to prepare (methyl) acrylate polymer.The molecular weight being somebody's turn to do (methyl) acrylate polymer, result weight average is measured by method described later Molecular weight is 1,500,000.
Mix (methyl) acrylate polymer 100 mass parts obtained in above-mentioned operation and cross-link as isocyanates The trimethylolpropane modification XDI (XDI of agent；Soken Chemical&Engineering Co., Ltd. make, TD-75) 0.15 mass parts being sufficiently stirred for, and dilute with ethyl acetate, thus obtain sticker coating fluid.
Use scraper type coating machine, obtained sticker coating fluid is coated with in the way of making dried thickness become 25 μm It is distributed in the stripping film that the one side silicone remover of pet film is carried out lift-off processing After the lift-off processing face of (LINTEC Corporation system, SP-PET3811, thickness: 38 μm), heat treated 1 at 90 DEG C Minute, form the adhering agent layer (acrylic acid adhering agent layer D) being made up of acrylic acid sticker.
(manufacturing example 8)
N-butyl acrylate (BA) 85 mass parts and acrylic acid (AA) 15 mass parts combined polymerization is made to prepare (methyl) propylene Acid ester polymer.Utilizing method described later to measure the molecular weight being somebody's turn to do (methyl) acrylate polymer, result weight average molecular weight is 500000.
Mix (methyl) acrylate polymer 100 mass parts obtained in above-mentioned operation and as epoxies cross-linking agent 1,3-pair (N, N '-diglycidyl aminomethyl) hexamethylene (Mitsubishi Gas Chemical Company system, TERAD-C) 0.05 mass parts being sufficiently stirred for, and dilute with ethyl acetate, thus obtain sticker coating fluid.
Use scraper type coating machine, obtained sticker coating fluid is coated with in the way of making dried thickness become 25 μm It is distributed in the stripping film that the one side silicone remover of pet film is carried out lift-off processing After the lift-off processing face of (LINTEC Corporation system, SP-PET3811, thickness: 38 μm), heat treated 1 at 90 DEG C Minute, form the adhering agent layer (acrylic acid adhering agent layer E) being made up of acrylic acid sticker.
By the composition of sticker (host) of preparation in each manufacture example and the Weight-average molecular of (methyl) acrylate polymer The thickness of amount (Mw), the kind of cross-linking agent and use level and adhering agent layer is shown in table 1.
Here, described weight average molecular weight (Mw) is to utilize gel permeation chromatography (GPC) method to measure (GPC under the following conditions Measure) the weight average molecular weight of polystyrene conversion.
＜ condition determination ＞
GPC determinator: TOSOH CORPORATION (ソ society) makes, HLC-8020；
GPC chromatographic column (is passed through) in the following order: TOSOH CORPORATION system；
TSK guard column HXL-H；
TSK gel GMHXL(×2)；
TSK gel G2000HXL；
Mensuration solvent: oxolane；
Mensuration temperature: 40 DEG C.
(embodiment 1)
As the first adhering agent layer, by manufacturing PET film (the core)/organosilicon adhering agent layer A/ obtained in example 1 not Process the surface of PET film (core) side of the laminate that PET film (stripping film) is constituted, attach as the second adhering agent layer Manufacture the acrylic acid adhering agent layer A formed in example 3.Obtained laminate is cut to width 25mm × length 200mm, obtains By stripping film/acrylic acid adhering agent layer A (the second adhering agent layer)/PET film (core)/organosilicon adhering agent layer A (the first adhesion Oxidant layer) the band stripping film double-faced pressure-sensitive adhesive sheet that constitutes of/untreated PET film (stripping film).
The stripping film of the first adhering agent layer side is peeled off, with the organosilicon exposed from obtained band stripping film double-faced pressure-sensitive adhesive sheet Adhering agent layer A and soda-lime glass (Central Glass Co., the Ltd. of the 105mm × 140mm size as the first duromer (セ Application ト ラ ルXiao Zi society) system, thickness: 1.1mm, Young's modulus: 71GPa；For labelling 4 in Fig. 3) mode that contacts, and more than State the mode that double-faced pressure-sensitive adhesive sheet highlights along its length, this double-faced pressure-sensitive adhesive sheet is attached at above-mentioned first duromer (with reference to Fig. 3).
Then, the stripping film of the second adhering agent layer side is peeled off from above-mentioned double-faced pressure-sensitive adhesive sheet, to the acrylic acid sticker exposed Layer A laminating as 35mm × 70mm size of the second duromer soda-lime glass (Central Glass Co., Ltd. system, thick Degree: 1.1mm, Young's modulus: 71GPa；Fig. 3 is labelling 5).Now, to be positioned at the length of the double-faced pressure-sensitive adhesive sheet on the first duromer The end of the end in degree direction and the length direction of the second duromer is positioned at the mode of same position, is fitted in by the second duromer Double-faced pressure-sensitive adhesive sheet (with reference to Fig. 3).So, obtain by soda-lime glass (the second duromer)/acrylic acid adhering agent layer A (the second adhesion Oxidant layer)/PET film (core)/organosilicon adhering agent layer A (the first adhering agent layer)/soda-lime glass (the first duromer) constitutes Laminate.
It addition, in the present embodiment, from the viewpoint of the easiness adjusted based on manual sticking position, first will Organosilicon adhering agent layer A is attached at the first duromer, but when considering commercial production, can first fit the second duromer and acrylic acid After adhering agent layer A, laminating organosilicon adhering agent layer A and the first duromer.
(embodiment 2～11, comparative example 1～2)
As shown in table 2, change the first adhering agent layer, the second adhering agent layer, the first duromer and the second duromer, except this with Outward, carry out similarly to Example 1 and make by the second duromer/the second adhering agent layer/core/the first adhering agent layer/the first The laminate that duromer is constituted.Wherein, in comparative example 1 and 2, become core PET film (TOYOBO Co., Ltd. system, PET A4300；Thickness 38 μm) two sides attach the laminate manufacturing in example the acrylic acid adhering agent layer/stripping film obtained, thus Obtain the band being made up of stripping film/acrylic acid adhering agent layer B or D/PET thin film (core)/acrylic acid adhering agent layer A/ stripping film Stripping film double-faced pressure-sensitive adhesive sheet, and use the making of this double-faced pressure-sensitive adhesive sheet to be glued by the second duromer/the second adhering agent layer/core/the first The laminate that oxidant layer/the first duromer is constituted.
Here, in embodiment 10, as the first duromer and the second duromer, use chemically reinforced glass plate (Corning Incorporated (conning society) makes, Gorilla glass (go リ ラ ガ ラ ス), thickness: 1.1mm, Young's modulus: 72GPa).It addition, in embodiment 11, as the first duromer and the second duromer, use corrosion resistant plate (SUS304, BA abradant surface, thickness: 1.0mm, Young's modulus: 200GPa).
(test example 1) (mensuration of adhesion strength)
The adhering agent layer being formed on stripping film in each manufacture example is fitted in PET film (TOYOBO Co., Ltd. system, PET A4300, thickness: 100 μm) one side, obtain the laminate of stripping film/adhering agent layer/PET film.Wherein, example 1 is manufactured And in 2, have been obtained for identical structure, be therefore directly used as laminate.Obtained laminate is cut to width 25mm, Length 100mm, and using this as sample.
23 DEG C, in the environment of 50%RH, peel off stripping film from above-mentioned sample, use the rubber rollers of 2kg, viscous by expose Oxidant layer and be attached at glass plate (Nippon Sheet Glass Co., the Ltd (Japan being made up of float glass (soda-lime glass) Ban Xiaozi society) system, thickness: 1.1mm), and place 20 minutes.
Afterwards, use universal type cupping machine (ORIENTEC Co., Ltd. (オ リ エ ンテック society) system, TENSILON UTM-4-100), according to JIS Z0237:2009, in peeling rate 300mm/min, the condition of peel angle 180 ° Lower mensuration adhesion strength (N/25mm).Show the result in table 1.
It addition, based on the above results, calculate use in embodiment and comparative example, the adhesion strength (F1) of the first adhering agent layer Ratio (F1/F2) relative to the adhesion strength (F2) of the second adhering agent layer.Show the result in table 2.
(test example 2) (mensuration of 100% modulus)
For the first adhering agent layer of use in embodiment and comparative example, (be formed on stripping film in above-mentioned manufacture example has Machine silicon adhering agent layer A, B and acrylic acid adhering agent layer B, D), use universal tensile testing machine (ORIENTEC Co., Ltd. system, TENSILON UTM-4-100), to try web width 5mm, stretching interval 20mm, draw speed 300mm/min mensuration stress-stretch Exhibition rate curve, the stress value that percentage of elongation becomes 100% is converted into MPa unit and as 100% modulus.Show the result in table 2.
(test example 3) (evaluation of re-workability)
The double-faced pressure-sensitive adhesive sheet that the laminate made from embodiment and comparative example is prominent is fixed on universal type tension test On machine (ORIENTEC Co., Ltd. system, TENSILON UTM-4-100), according to JIS Z0237:2009, at peeling rate 300mm/min, peel angle 90 ° condition (stripping upward) under to measure the first adhering agent layer in double-faced pressure-sensitive adhesive sheet relative Peeling force (N/25mm) in the first duromer.Show the result in table 2.
It addition, after carrying out above-mentioned disbonded test, be visually confirmed to be the presence or absence of the cull on the first duromer surface, and with following Benchmark cull is evaluated.Show the result in table 2.
◎ ... entirely without cull.
Zero ... have less than fitting area 20% cull.
△ ... have the 20% of fitting area less than 50% cull.
× ... have fitting area more than 50% cull.
Furthermore, it is possible to say, to state peeling force be below 50N/25mm, preferably below 30N/25mm and when not having cull, then adds Work is excellent.
(table 1)
(table 2)
As shown in Table 2, the double-faced pressure-sensitive adhesive sheet obtained in the embodiment re-workability when peeling off duromer is excellent.
Industrial applicibility
The double-faced pressure-sensitive adhesive sheet of the present invention such as can be to be suitable for the display body being used in the touch panel of electrostatic capacitance mode Module or the parts that comprise display body module with cover material or comprise the laminating of the parts covering material.
Description of reference numerals
1: double-faced pressure-sensitive adhesive sheet
11: the first adhering agent layers
11S: the first bonding plane
12: the second adhering agent layers
12S: the second bonding plane
13: core
2a, 2b: stripping film
3: band stripping film double-faced pressure-sensitive adhesive sheet
4: the first duromers
5: the second duromers
10: laminate

Claims (14)

1. a double-faced pressure-sensitive adhesive sheet, it is bonding that it is used between the first duromer and the second duromer, it is characterised in that
Described double-faced pressure-sensitive adhesive sheet possesses: the first bonding plane, and it is adhered to described first duromer or is positioned at than described two-sided adhesion Sheet is more by the parts on described first hard side；And second bonding plane, it is adhered to described second duromer or is positioned at than institute State double-faced pressure-sensitive adhesive sheet more by the parts on described second hard side,
When described first bonding plane relative to described first duromer or is positioned at than described double-faced pressure-sensitive adhesive sheet more by described first The adhesion strength of the parts on hard side is set to F1, and relative to described second duromer or is positioned at than institute by described second bonding plane State the double-faced pressure-sensitive adhesive sheet adhesion strength of parts more by described second hard side when being set to F2, the described F1 ratio relative to described F2 I.e. F1/F2 is 0.0001～0.1.
Double-faced pressure-sensitive adhesive sheet the most according to claim 1, it is characterised in that described double-faced pressure-sensitive adhesive sheet possesses: the first sticker Layer, it has described first bonding plane；And second adhering agent layer, it has described second bonding plane.
Double-faced pressure-sensitive adhesive sheet the most according to claim 2, it is characterised in that the thickness of described first adhering agent layer is relative to institute The ratio of the thickness stating the second adhering agent layer is 0.01～10.
4. according to the double-faced pressure-sensitive adhesive sheet described in Claims 2 or 3, it is characterised in that at described first adhering agent layer and described the It is provided with core between two adhering agent layers.
5. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 2～4, it is characterised in that described first adhering agent layer by Organosilicon sticker containing organopolysiloxane is constituted.
Double-faced pressure-sensitive adhesive sheet the most according to claim 5, it is characterised in that it is organic that described organosilicon sticker contains add-on type Polysiloxanes and comprise the organopolysiloxane of siloxane unit of three-functionality-degree or four degrees of functionality.
Double-faced pressure-sensitive adhesive sheet the most according to claim 6, it is characterised in that described add-on type organopolysiloxane is to make silicon Organopolysiloxane and organic hydrogen polysiloxanes that oxygen alkane key as main framing and has alkenyl react and obtain.
8. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 2～7, it is characterised in that described first adhering agent layer The adhesion strength to float glass according to JIS Z0237:2009 of described first bonding plane is 0.01～1N/25mm.
9. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 2～8, it is characterised in that described first adhering agent layer 100% modulus is 0.3～1.5MPa.
10. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 2～9, it is characterised in that described second adhering agent layer by Acrylic compounds sticker or ultraviolet hardening sticker containing (methyl) acrylate polymer are constituted.
11. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 4～10, it is characterised in that described core is by polyester Film is constituted.
12. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 1～11, it is characterised in that described first duromer is Display body module.
13. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 1～12, it is characterised in that described second duromer is Cover material.
14. according to the double-faced pressure-sensitive adhesive sheet according to any one of claim 1～13, it is characterised in that described first duromer and Described second duromer is the parts constituting touch panel.
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