CN107629711A - Optics double-faced adhesive tape - Google Patents
Optics double-faced adhesive tape Download PDFInfo
- Publication number
- CN107629711A CN107629711A CN201710537703.1A CN201710537703A CN107629711A CN 107629711 A CN107629711 A CN 107629711A CN 201710537703 A CN201710537703 A CN 201710537703A CN 107629711 A CN107629711 A CN 107629711A
- Authority
- CN
- China
- Prior art keywords
- methyl
- adhesive
- adhesive tape
- adhesive phase
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002390 adhesive tape Substances 0.000 title claims abstract description 121
- 239000000853 adhesive Substances 0.000 claims abstract description 253
- 230000001070 adhesive effect Effects 0.000 claims abstract description 253
- 239000000463 material Substances 0.000 claims abstract description 84
- 239000000758 substrate Substances 0.000 claims abstract description 49
- 229920000728 polyester Polymers 0.000 claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 89
- -1 polysiloxane Polymers 0.000 claims description 85
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 36
- 239000010410 layer Substances 0.000 claims description 27
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 description 83
- 239000000178 monomer Substances 0.000 description 78
- CERQOIWHTDAKMF-UHFFFAOYSA-N alpha-methacrylic acid Natural products CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 68
- 238000004519 manufacturing process Methods 0.000 description 61
- 229920000058 polyacrylate Polymers 0.000 description 60
- 239000003795 chemical substances by application Substances 0.000 description 46
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 40
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 39
- 229920000642 polymer Polymers 0.000 description 30
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 28
- 239000003431 cross linking reagent Substances 0.000 description 27
- 239000000047 product Substances 0.000 description 26
- 229910052757 nitrogen Inorganic materials 0.000 description 25
- 239000002253 acid Substances 0.000 description 23
- 125000005250 alkyl acrylate group Chemical group 0.000 description 20
- 239000004611 light stabiliser Substances 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 17
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 17
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 16
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 15
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 15
- 239000002904 solvent Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 14
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 13
- 125000000217 alkyl group Chemical group 0.000 description 13
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 13
- 125000004433 nitrogen atom Chemical group N* 0.000 description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 12
- 239000003505 polymerization initiator Substances 0.000 description 12
- 229910000077 silane Inorganic materials 0.000 description 12
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 11
- 239000005020 polyethylene terephthalate Substances 0.000 description 11
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- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
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- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
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- 239000012965 benzophenone Substances 0.000 description 8
- ISAOCJYIOMOJEB-UHFFFAOYSA-N desyl alcohol Natural products C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 8
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- 239000004593 Epoxy Substances 0.000 description 7
- 150000001412 amines Chemical class 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- RSJKGSCJYJTIGS-UHFFFAOYSA-N undecane Chemical compound CCCCCCCCCCC RSJKGSCJYJTIGS-UHFFFAOYSA-N 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 6
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- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 6
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- 125000003118 aryl group Chemical group 0.000 description 5
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 5
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- 238000000576 coating method Methods 0.000 description 5
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- 238000003851 corona treatment Methods 0.000 description 5
- 125000003700 epoxy group Chemical group 0.000 description 5
- 235000019441 ethanol Nutrition 0.000 description 5
- CBFCDTFDPHXCNY-UHFFFAOYSA-N icosane Chemical compound CCCCCCCCCCCCCCCCCCCC CBFCDTFDPHXCNY-UHFFFAOYSA-N 0.000 description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 5
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- GXURZKWLMYOCDX-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol;dihydroxyphosphanyl dihydrogen phosphite Chemical class OP(O)OP(O)O.OCC(CO)(CO)CO GXURZKWLMYOCDX-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 4
- 244000028419 Styrax benzoin Species 0.000 description 4
- 235000000126 Styrax benzoin Nutrition 0.000 description 4
- 235000008411 Sumatra benzointree Nutrition 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical group C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 description 4
- 229960002130 benzoin Drugs 0.000 description 4
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 description 4
- IAQRGUVFOMOMEM-UHFFFAOYSA-N but-2-ene Chemical group CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 4
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 4
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 4
- 235000019382 gum benzoic Nutrition 0.000 description 4
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 4
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- PJUIMOJAAPLTRJ-UHFFFAOYSA-N monothioglycerol Chemical compound OCC(O)CS PJUIMOJAAPLTRJ-UHFFFAOYSA-N 0.000 description 4
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Classifications
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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
- 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
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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
- C09J121/00—Adhesives based on unspecified rubbers
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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
- C09J139/00—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 a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Adhesives based on derivatives of such polymers
- C09J139/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
-
- 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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic 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
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to optics double-faced adhesive tape.The present invention provides a kind of optics double-faced adhesive tape for being suitable for realizing good tearing property of hand and high re-workability in the lump while with polyesters base material.The adhesive tape (X) of the present invention has the stepped construction for including the base material (10) as transparent base, adhesive phase (11) and adhesive phase (12).Base material (10) is for substrate width direction uniaxial tension polyesters base material and between adhesive phase (11,12) and with more than 75 μm of thickness.Elmendorf tearing strength on the substrate width direction of adhesive tape (X) is below 0.5N, and the Elmendorf tearing strength on the length substrate direction of adhesive tape (X) is more than 1N.
Description
Technical field
The present invention relates to the double-faced adhesive tape of the optical applications with translucency.
Background technology
In the technical field of flat-panel monitor, optics double-faced adhesive tape is utilized in the manufacture of display device.Specifically
For, the input unit such as the display device such as liquid crystal display or contact panel has the stepped construction comprising various substrates or film body
Portion, in order to by engagement or gap in order to fill between adjacent part between adjacent defined part in the stepped construction,
Sometimes transparent double-faced adhesive tape is used.Such optics is for example recorded in double-faced adhesive tape in following patent documents 1~3.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2012-78431 publications
Patent document 2：Japanese Unexamined Patent Publication 2015-200698 publications
Patent document 3：Japanese Unexamined Patent Publication 2016-26321 publications
The content of the invention
Invent problem to be solved
For base material as above-mentioned optics double-faced adhesive tape, sometimes using polyesters base material because its heat resistance, thoroughly
The various excellents such as bright property, dimensional stability.For the polyester as the optical applications for optics double-faced adhesive tape etc.
For such as PET film of class base material, it is known that in most cases in a manufacturing process squeezed material resin material by T-shaped mould head method
Go out to be configured to membranaceous and then process comprising the stretching along the flow direction of the film or length direction (MD) and in the width direction (TD)
Stretching biaxial stretch-formed processing.
In addition, for optics double-faced adhesive tape, consider from viewpoints such as operating efficiencies, sometimes require that good hand is torn
Property.
The present invention is found out based on situation as described above, and its object is to provide one kind to be suitable for polyesters base
Good tearing property of hand and high re-workability (リ ワ ー Network are realized while material in the lump) optics double-faced adhesive tape.
The means used to solve the problem
Have comprising first adhesive phase, second adhesive phase and be somebody's turn to do with double-faced adhesive tape according to optics provided by the invention
The stepped construction of transparent base between first adhesive phase and second adhesive phase.Transparent base is substrate width direction single shaft
Stretched polyester class base material and with more than 75 μm of thickness.Polyesters base material refers to maximum weight ratio contain in constituent material
There are the base materials such as film or the sheet material of polyester resin.Substrate width direction uniaxial tension polyesters base material refers in polyesters base material
In manufacturing process after the extrusion molding of material resin material by for example along with the membranaceous flow direction for being extruded into body or
The polyesters base material of the uniaxial tension processing of the orthogonal width (TD) of length direction (MD).First adhesive phase and/or
Two adhesive phases are for example containing selected from by acrylic adhesives, polyurethane binding, polysiloxane-based adhesive and rubber
At least one of group that class adhesive is formed.In this optics with double-faced adhesive tape, the Elmendorf in substrate width direction
Tearing strength is below 0.5N, and the Elmendorf tearing strength in length substrate direction is more than 1N.Formed with more than
This optics can be used to carry with double-faced adhesive tape to be used to cover and protects the piece of the release liner of the adhesive surface of each adhesive phase
The form of shape, can also use in the form of this optics is alternately arranged with double-faced adhesive tape and release liner with release liner and
It is wound into a roll the form of tubular.
As described above, this optics transparent base possessed by double-faced adhesive tape is polyesters base material.Such form is fitted
Together in poly- with heat resistance, the transparency, dimensional stability etc. is enjoyed in double-faced adhesive tape in double-faced adhesive tape base material and this optics
The various characteristics that esters base material is easily shown.
In addition, as described above, this optics transparent base possessed by double-faced adhesive tape is the width that thickness is more than 75 μm
Spend direction uniaxial tension polyesters base material.The tearing strengths such as the Elmendorf tearing strength of double-faced adhesive tape are consumingly controlled by
The mechanical property of base material, such composition are suitable in this optics with the Ai Ermen that substrate width direction is realized in double-faced adhesive tape
The above-mentioned composition that more husband's tearing strengths are below 0.5N and the Elmendorf tearing strength in length substrate direction is more than 1N.
In addition, as described above, this optics is torn by force with the Elmendorf in the substrate width direction of double-faced adhesive tape
Spend for below 0.5N, and the Elmendorf tearing strength in length substrate direction is more than 1N.Such composition is suitable at this
Realized in optics double-faced adhesive tape along Elmendorf tearing strength intentionally as little as below 0.5N substrate width side relatively
To good tearing property of hand.At the same time, Elmendorf tearing strength is the 2 of substrate width direction on length substrate direction
The composition of more than 1N more than times is suitable in this optics finger improved in double-faced adhesive tape along the tear in substrate width direction
Tropism.Therefore, this composition is suitable for making stripping in the case where this optics is in the state for fitting in adherend with double-faced adhesive tape
The length substrate direction of the adhesive tape is acted on from power so that the adhesive tape is not peeled off suitably with not ftractureing from adherend.Specifically
For, the operation that is suitable for after this optics is bonded with double-faced adhesive tape with adherend first peeling off and then be bonded again (again plus
Work industry) when make peeling force act on the film length substrate direction so that the adhesive tape do not ftracture from adherend suitably
Peel off.Not only substrate width direction but also the optics double-faced adhesive tape that is also easily torn in length substrate direction again plus
Work industry in stripping when tend to easily cracking and be difficult to suitably peel off from adherend.The optics of cracking is generated with two-sided
Adhesive tape cannot be used in being bonded again.On the other hand, this optics with double-faced adhesive tape have be adapted for carrying out it is wide along base material
The substrate width direction Elmendorf tearing strength for good the tearing property of hand for spending direction compares sufficiently large length substrate direction
Elmendorf tearing strength, therefore be suitable for not peeling off suitably from adherend with not ftractureing when reprocessing operation.
As described above, this optics be suitable for realizing in the lump while with polyesters base material with double-faced adhesive tape it is good
Tearing property of hand and high re-workability.
It is preferred that the thickness of first adhesive phase is more than 5 μm and the thickness of second adhesive phase is more than 5 μm.It is such
It is formed in and realizes that optics double-faced adhesive tape is suitable to the sufficient bonding force aspect of adherend.
It is preferred that this optics is less than 3% with the mist degree of the thickness direction of double-faced adhesive tape.Such composition is for requiring
The optics of bright property is suitable with adhesive tape.
Brief description of the drawings
Fig. 1 is the partial sectional view of the optics double-faced adhesive tape of an embodiment of the invention.
Reference
X adhesive tapes (optics double-faced adhesive tape)
10 base materials
11 adhesive phases (first adhesive phase)
12 adhesive phases (second adhesive phase)
Embodiment
Fig. 1 is the adhesive tape X of the optics double-faced adhesive tape as an embodiment of the invention partial sectional view.
Adhesive tape X has comprising the base material 10 as transparent base, the adhesive phase 11 as first adhesive phase and viscous as second
The stepped construction of the adhesive phase 12 of mixture layer.Adhesive tape X can be used in the manufacture of the display device such as flat-panel monitor.
The input unit such as the display devices such as liquid crystal display or contact panel has the stepped construction portion comprising various substrates or film body, is
By engagement between adjacent defined part in the stepped construction or the gap in order to fill between adjacent part, Neng Gouli
With adhesive tape X.
Base material 10 possessed by adhesive tape X is acted as in adhesive tape X between adhesive phase 11,12 and as supporter
Position, it is the substrate width direction uniaxial tension polyesters base material with translucency.
Polyesters base material refers to the bases such as film or the sheet material for containing polyester resin in constituent material with maximum weight ratio
Material.For constituent material as such base material 10, it can enumerate for example：Polyethylene terephthalate, gather to benzene two
Formic acid butanediol ester, PEN and poly terephthalic acid 1,4 cyclohexane dimethanol ester.
Substrate width direction uniaxial tension polyesters base material refers in the manufacturing process of polyesters base material in material resin
By for example along the width orthogonal with the membranaceous flow direction for being extruded into body or length direction (MD) after the extrusion molding of material
Spend the polyesters base material of the uniaxial tension processing of direction (TD).Base as such width uniaxial tension polyesters base material
The stretching ratio of the width of material 10 is preferably more than 2.5 times, more preferably more than 3 times.In addition, the stretching ratio is preferably
Less than 6 times, more preferably less than 5.5 times.
The thickness of base material 10 is more than 75 μm, is preferably more than 80 μm.In addition, the thickness of base material 10 be preferably 150 μm with
Under, more preferably less than 125 μm.
Phase difference is preferably more than 1500nm, more preferably more than 3000nm, more preferably 6000nm in the face of base material 10
More than.In the present embodiment, phase difference refers to the light transmission base material 10 with making wavelength 590nm at 23 DEG C in the face of base material 10
When relevant, orthogonal in the face of the main surface parallel with base material 10 two optical main axis (slow axis and fast axle) of birefringence in
Slow-axis direction vibration polarized light component (extraordinary light) with quick shaft direction vibrate polarized light component (ordinary ray) between
Caused phase difference.The refractive index (relatively large) of extraordinary light is set to nx, the refractive index (relatively small) by ordinary ray
In the case of being set to ny, the thickness of base material 10 being set to d (nm), phase difference is the value represented with (nx-ny) × d in the face.
The surface of the side of adhesive phase 11 in base material 10 and the surface of 12 sides can implement to be used to improve respectively and adhesive
The surface treatment of the adhesiveness of layer.As such surface treatment, can enumerate：The physics such as sided corona treatment or corona treatment
Property processing and primary coat processing etc. chemically handle.
Adhesive tape X adhesive phase 11,12 contains adhesive as host and has translucency respectively.Host refers to
Occupy the composition of maximum weight ratio in contained composition.Adhesive phase 11 and/or adhesive phase 12 containing be selected from by
Acrylic polymer as acrylic adhesives, the polyurethane as polyurethane binding, polysiloxane-based bonding
At least one of group that agent and rubber adhesive are formed.Realize that the adhesive phase of optics double-faced adhesive tape is wanted from simultaneously
From the viewpoint of the bonding force and high transparency of seeking degree, it is preferred to use acrylic polymer is as in adhesive phase 11,12
Adhesive.In addition, adhesive phase 11 with Pasting in the adhesive surface 11a of adherend, adhesive phase 12 with Pasting in
The adhesive surface 12a of adherend.
Contain the feelings of the acrylic polymer as acrylic adhesives in adhesive phase 11 and/or adhesive phase 12
Under condition, preferably the acrylic polymer contain from the alkyl with straight-chain or branched alkyl acrylate and/
Or the monomeric unit of the alkyl methacrylate of the alkyl with straight-chain or branched is as most in terms of part by weight
Main monomer unit.Hereinafter, with " (methyl) acrylic acid " expression " acrylic acid " and/or " methacrylic acid ".
As alkyl monomeric unit, that there is straight-chain or branched for forming aforesaid propylene acids polymers
(methyl) alkyl acrylate, contained in the monomer components of aforesaid propylene acids polymers there is straight chain as being formed
For (methyl) alkyl acrylate of shape or the alkyl of branched, it can enumerate for example：(methyl) methyl acrylate, (methyl)
Ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) n-butyl acrylate, (methyl) propylene
The secondary butyl ester of acid, (methyl) isobutyl acrylate, (methyl) tert-butyl acrylate, (methyl) amyl acrylate, (methyl) acrylic acid
Isopentyl ester, (methyl) Hexyl 2-propenoate, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) acrylic acid 2- ethyls
Own ester, (methyl) Isooctyl acrylate monomer, (methyl) acrylic acid nonyl ester, the different nonyl ester of (methyl) acrylic acid, (methyl) decyl acrylate,
(methyl) isodecyl acrylate, (methyl) acrylic acid hendecane base ester, (methyl) dodecylacrylate, (methyl) acrylic acid
Tridecane base ester, (methyl) acrylic acid tetradecane base ester, (methyl) acrylic acid pentadecane base ester, (methyl) acrylic acid cetyl
Ester, (methyl) acrylic acid heptadecane base ester, (methyl) octadecyl acrylate, the different stearyl ester of (methyl) acrylic acid, (methyl)
Acrylic acid nonadecane base ester and (methyl) acrylic acid eicosane base ester etc. have the straight-chain or branched that carbon number is 1~20
Alkyl (methyl) alkyl acrylate.As for acrylic polymer should (methyl) alkyl acrylate, can be with
Using a kind of (methyl) alkyl acrylate, two or more (methyl) alkyl acrylates can also be used.In present embodiment
In, (methyl) alkyl acrylate is somebody's turn to do as acrylic polymer, preferably using selected from by n-butyl acrylate, third
At least one of group that olefin(e) acid 2- ethylhexyls and the different stearyl ester of acrylic acid are formed.
(methyl) alkyl acrylate in aforesaid propylene acids polymers, from the alkyl with straight-chain or branched
The ratio of the monomeric unit of base ester is preferably more than 50 weight %, is more preferably more than 60 weight %, more preferably 70 weight %
Above, more preferably more than 80 weight %, more preferably more than 90 weight %.That is, for forming the acrylic polymer
The ratio of (methyl) alkyl acrylate in the monomer component composition of raw material is preferably more than 50 weight %, is more preferably 60 weights
Measure more than %, more preferably more than 70 weight %, more preferably more than 80 weight %, more preferably more than 90 weight %.It is above-mentioned
Acrylic polymer is with the monomer from the monomer component composition with such (methyl) alkyl acrylate ratio
Unit is formed.On (methyl) alkyl acrylate of the alkyl with straight-chain or branched ratio this composition containing
The acrylic polymer and the acrylic polymer as acrylic adhesives is suitably shown in the adhesive phase that is formed
It is suitable in terms of the fundamental characteristics such as the cohesive of compound.
The acrylic polymer contained in adhesive phase 11, adhesive phase 12 can contain from ester ring type monomer
Monomeric unit.Ester ring type monomer as the monomeric unit for forming acrylic polymer, i.e. as be used to being formed this third
In the monomer component of alkene acids polymers for contained ester ring type monomer, it can enumerate for example：(methyl) acrylate base
Ester, (methyl) acrylate with two ring type hydrocarbon rings and (methyl) acrylate with hydrocarbon rings more than three rings.As (first
Base) for acrylate base ester, it can enumerate for example：(methyl) acrylic acid ring pentyl ester, (methyl) cyclohexyl acrylate, (first
Base) acrylic acid cycloheptyl ester and (methyl) acrylic acid ring monooctyl ester., can for (methyl) acrylate with two ring type hydrocarbon rings
To enumerate for example：(methyl) acrylic acid norbornene ester and (methyl) isobornyl acrylate.As with hydrocarbon rings more than three rings
For (methyl) acrylate, it can enumerate for example：(methyl) acrylic acid tetrahydrochysene dicyclopentadiene base ester, (methyl) acrylic acid
Tetrahydrochysene dicyclopentadiene base epoxide ethyl ester, (methyl) acrylic acid tetrahydrochysene trimerization cyclopentadiene base ester, (methyl) acrylic acid 1- gold
Firm Arrcostab, (methyl) acrylic acid 2- methyl -2- adamantane esters and (methyl) acrylic acid 2- ethyl -2- adamantane esters.Make
For the ester ring type monomer for acrylic polymer, can use a kind of ester ring type monomer, can also use two kinds with
Upper ester ring type monomer.In the present embodiment, as the ester ring type monomer for acrylic polymer, preferably using be selected from by
In the group that cyclohexyl acrylate, cyclohexyl methacrylate, isobornyl acrylate and isobornyl methacrylate are formed
It is at least one.
From the viewpoint of appropriate flexibility being realized from the adhesive phase formed containing the acrylic polymer,
The ratio of monomeric unit in aforesaid propylene acids polymers, from ester ring type monomer is preferably the weight of 5 weight %~60
Measure %, more preferably the weight % of 10 weight %~50.
The acrylic polymer contained in adhesive phase 11, adhesive phase 12 can contain from hydroxyl monomer
Monomeric unit.Hydroxyl monomer is the monomer for having in monomeric unit at least one hydroxyl.Propylene in adhesive phase 11,12
In the case that acids polymers contain hydroxyl monomeric unit, adhesive phase 11,12 is readily obtained adhesivity, appropriate aggegation
Power.
Hydroxyl monomer, i.e. conduct as the monomeric unit for forming aforesaid propylene acids polymers is used to form this
In the monomer component of acrylic polymer for contained hydroxyl monomer, it can enumerate for example：Hydroxyl (methyl) propylene
Acid esters, vinyl alcohol and allyl alcohol.For (methyl) acrylate of hydroxyl, it can enumerate for example：(methyl) acrylic acid
2- hydroxy methacrylates, (methyl) acrylic acid 2- hydroxy propyl esters, (methyl) acrylic acid 3- hydroxy propyl esters, (methyl) acrylic acid 4- hydroxyl fourths
Ester, the own ester of (methyl) acrylic acid 6- hydroxyls, (methyl) dihydroxypropyl monooctyl ester, (methyl) dihydroxypropyl last of the ten Heavenly stems ester, (methyl) third
Olefin(e) acid hydroxylauric ester and (methyl) acrylic acid (4- hydroxymethylcyclohexyls) methyl esters.Contain hydroxyl as acrylic polymer
For base monomer, a kind of hydroxyl monomer can be used, two or more hydroxyl monomers can also be used.In present embodiment
In, as the hydroxyl monomer for acrylic polymer, preferably using selected from by acrylic acid 2- hydroxy methacrylates, metering system
Sour 2- hydroxy methacrylates, acrylic acid 2- hydroxy propyl esters, methacrylic acid 2- hydroxy propyl esters, acrylic acid 4- hydroxybutyls and metering system
At least one of group that sour 4- hydroxybutyls are formed.
The ratio of monomeric unit in aforesaid propylene acids polymers, from hydroxyl monomer is preferably 1 weight %
Above, more preferably more than 2 weight %, more preferably more than 3 weight %, more preferably more than 5 weight %, more preferably 7 weights
Measure more than %, more preferably more than 10 weight %.Monomer list in aforesaid propylene acids polymers, from hydroxyl monomer
The ratio of member is preferably below 20 weight %, is more preferably below 18 weight %.These structures on the ratio of hydroxyl monomer
Into being suitable in terms of realizing adhesivity, appropriate cohesive force in the adhesive phase formed containing the acrylic polymer
's.
The acrylic polymer contained in adhesive phase 11, adhesive phase 12, which can contain, derives from nitrogen atom monomer
Monomeric unit.Nitrogen atom monomer is the monomer for having in monomeric unit at least one nitrogen-atoms.In adhesive phase 11,12
Acrylic polymer contain nitrogen atom monomeric unit in the case of, adhesive phase 11,12 is readily obtained hardness, good
Gluing reliability.
Nitrogen atom monomer, i.e. conduct as the monomeric unit for forming aforesaid propylene acids polymers is used to be formed
In the monomer component of the acrylic polymer for contained nitrogen atom monomer, it can enumerate for example：N- vinyl cyclics
Acid amides and (methyl) acrylic amide.N- vinyl cyclics acid amides as nitrogen atom monomer can be enumerated for example：N- ethene
Base -2-Pyrrolidone, N- vinyl -2- piperidones, N- vinyl -3- morpholones, N- vinyl -2- caprolactams, N- ethene
Base -1,3-Piperazine -2- ketone and N- vinyl -3,5- morpholine diketones.(methyl) acrylic amide as nitrogen atom monomer can
To enumerate for example：(methyl) acrylamide, N- ethyls (methyl) acrylamide, N- isopropyls (methyl) acrylamide, the positive fourths of N-
Base (methyl) acrylamide, N- octyl groups (methyl) acrylamide, N, N- dimethyl (methyl) acrylamide, N, N- diethyl (first
Base) acrylamide, N, N- dipropyl (methyl) acrylamide and N, N- diisopropyl (methyl) acrylamide.As for propylene
For the nitrogen atom monomer of acids polymers, can use a kind of nitrogen atom monomer, can also use it is two or more nitrogenous
Atom monomer.In the present embodiment, as the nitrogen atom monomer for acrylic polymer, preferably using N- ethene
Base -2-Pyrrolidone.
For the adhesive phase formed containing the acrylic polymer, from realize appropriate hardness, adhesivity,
From the viewpoint of the transparency, the ratio of monomeric unit in aforesaid propylene acids polymers, from nitrogen atom monomer is excellent
Elect as more than 1 weight %, more preferably more than 3 weight %, more preferably more than 5 weight %.In addition, for containing the acrylic acid
For the adhesive phase birdsed of the same feather flock together compound and formed, from realize sufficiently the viewpoint of the transparency, suppress excessively to be hardened and realize good
Gluing reliability from the viewpoint of, monomeric unit in aforesaid propylene acids polymers, from nitrogen atom monomer
Ratio is preferably below 30 weight %, is more preferably below 25 weight %.
The acrylic polymer contained in adhesive phase 11, adhesive phase 12 can contain from carboxyl group-containing monomer
Monomeric unit.Carboxyl group-containing monomer is the monomer for having in monomeric unit at least one carboxyl.Propylene in adhesive phase 11,12
In the case that acids polymers contain carboxyl group-containing monomer unit, adhesive phase 11,12 is readily obtained good gluing reliable sometimes
Property.
Carboxyl group-containing monomer as the monomeric unit for forming aforesaid propylene acids polymers, it is used to form the propylene
In the monomer component of acids polymers for contained carboxyl group-containing monomer, it can enumerate for example：(methyl) acrylic acid, itaconic acid,
Maleic acid, fumaric acid, crotonic acid and iso-crotonic acid.For the carboxyl group-containing monomer for acrylic polymer, it can make
With a kind of carboxyl group-containing monomer, two or more carboxyl group-containing monomers can also be used.In the present embodiment, as acrylic compounds
The carboxyl group-containing monomer of polymer, preferably using acrylic acid.
Obtained from the adhesive phase formed containing the acrylic polymer and polar group be present on adherend surface
It is above-mentioned with the contribution of the interaction of the polar group so that it is guaranteed that from the viewpoint of good gluing reliability in the case of group
The ratio of the monomeric unit from carboxyl group-containing monomer in acrylic polymer is preferably more than 0.1 weight %, more preferably
For more than 0.5 weight %.In addition, excessively it is hardened so as to real from the adhesive phase for suppressing to be formed containing the acrylic polymer
From the viewpoint of now good gluing reliability, the monomeric unit from carboxyl group-containing monomer in aforesaid propylene acids polymers
Ratio be preferably below 20 weight %, more preferably below 15 weight %.
The acrylic polymer contained in adhesive phase 11, adhesive phase 12, which can have, to be derived from as copolymerization sexual intercourse
Join the cross-linked structure of multifunctional (methyl) acrylate of agent.For multifunctional (methyl) acrylate, example can be enumerated
Such as：1,6-HD two (methyl) acrylate, butanediol two (methyl) acrylate, (poly-) ethylene glycol two (methyl) acrylic acid
Ester, (poly-) propane diols two (methyl) acrylate, neopentyl glycol two (methyl) acrylate, pentaerythrite two (methyl) acrylic acid
Ester, pentaerythrite three (methyl) acrylate, dipentaerythritol six (methyl) acrylate, trimethylolpropane tris (methyl) third
Olefin(e) acid ester, tetramethylol methane three (methyl) acrylate, (methyl) allyl acrylate and (methyl) vinyl acrylate.Make
For multifunctional (methyl) acrylate for acrylic polymer, a kind of multifunctional (methyl) acrylic acid can be used
Ester, two or more multifunctional (methyl) acrylate can also be used.In the present embodiment, as acrylic
Multifunctional (methyl) acrylate of thing, preferably using selected from by 1,6- hexanediyl esters, the propylene of dipentaerythritol six
At least one of group that acid esters and trimethylolpropane trimethacrylate are formed.
The ratio of monomeric unit in aforesaid propylene acids polymers, from multifunctional (methyl) acrylate is preferred
For more than 0.01 weight %, more preferably more than 0.03 weight %, more preferably more than 0.05 weight %.Aforesaid propylene acids gathers
The ratio of monomeric unit in compound, from multifunctional (methyl) acrylate is preferably below 1 weight %, more preferably
Below 0.5 weight %.These on the ratio of multifunctional (methyl) acrylate are formed in and contain the acrylic polymer
And it is suitable in terms of appropriate hardness, adhesivity are realized in the adhesive phase formed.
Contain feelings of the acrylic polymer as described above as adhesive in adhesive phase 11 and/or adhesive phase 12
Under condition, the containing ratio of the acrylic polymer in adhesive phase is, for example, the weight % of 85 weight %~100.
From the viewpoint of high adherence at room temperature is realized, adhesive phase 11,12 can for example contain raw material list respectively
Body forms the acrylic compounds oligomer different from aforesaid propylene acids polymers.Contain in adhesive phase 11 and/or adhesive phase 12
In the case of having such acrylic compounds oligomer, relative to the adhesive in adhesive phase or the weight of acrylic polymer 100
Part is measured, the content of the acrylic compounds oligomer in adhesive phase is, for example, the parts by weight of 0.1 parts by weight~20.
Above-mentioned oligomer is preferably containing from (methyl) acrylate ((methyl) third containing ring with cyclic structure
Olefin(e) acid ester) monomeric unit and (methyl) alkyl acrylate from the alkyl with straight-chain or branched monomer list
The polymer of member.
(methyl) acrylate containing ring, i.e. conduct as the monomeric unit for forming above-mentioned oligomer is used to be formed
In the monomer component of the oligomer for contained (methyl) acrylate containing ring, it can enumerate for example：(methyl) acrylic acid
Cycloalkyl ester, (methyl) acrylate with two ring type hydrocarbon rings, (methyl) acrylate with hydrocarbon rings more than three rings and
(methyl) acrylate with aromatic ring.For (methyl) acrylate base ester, it can enumerate for example：(methyl)
Acrylic acid ring pentyl ester, (methyl) cyclohexyl acrylate, (methyl) acrylic acid cycloheptyl ester and (methyl) acrylic acid ring monooctyl ester.As tool
For having (methyl) acrylate of two ring type hydrocarbon rings, it can enumerate for example：(methyl) acrylic acid norbornene ester and (methyl) propylene
Sour isobornyl thiocyanoacetate.For (methyl) acrylate with hydrocarbon rings more than three rings, it can enumerate for example：(methyl) propylene
Sour tetrahydrochysene dicyclopentadiene base ester, (methyl) acrylic acid tetrahydrochysene dicyclopentadiene base epoxide ethyl ester, (methyl) acrylic acid four
Hydrogen trimerization cyclopentadiene base ester, (methyl) acrylic acid 1- adamantane esters, (methyl) acrylic acid 2- methyl -2- adamantane esters and
(methyl) acrylic acid 2- ethyl -2- adamantane esters.For (methyl) acrylate with aromatic ring, it can enumerate
Such as：(methyl) phenyl acrylate, (methyl) acrylate and (methyl) benzyl acrylate.As for oligomer
(methyl) acrylate containing ring for, can use a kind of (methyl) acrylate containing ring, can also use two kinds with
On (methyl) acrylate containing ring.In the present embodiment, it is excellent as (methyl) acrylate containing ring for oligomer
What choosing was made up of using being selected from acrylic acid tetrahydrochysene dicyclopentadiene base ester and methacrylic acid tetrahydrochysene dicyclopentadiene base ester
At least one of group.
It is above-mentioned oligomeric from the viewpoint of realizing appropriate flexibility from the adhesive phase formed containing the oligomer
The ratio of monomeric unit in thing, from (methyl) acrylate containing ring is preferably the weight % of 10 weight %~90, more
The weight % of the weight % of preferably 20 weight %~80, more preferably 35 weight %~80.
(methyl) third as alkyl monomeric unit, that there is straight-chain or branched for forming above-mentioned oligomer
Olefin(e) acid Arrcostab, i.e. as forming alkyl contained, that there is straight-chain or branched in the monomer component of the oligomer
(methyl) alkyl acrylate for, can enumerate for example：(methyl) methyl acrylate, (methyl) ethyl acrylate, (first
Base) propyl acrylate, (methyl) isopropyl acrylate, (methyl) n-butyl acrylate, (methyl) sec-butyl acrylate, (methyl)
Isobutyl acrylate, (methyl) tert-butyl acrylate, (methyl) amyl acrylate, (methyl) isoamyl acrylate, (methyl) third
The own ester of olefin(e) acid, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) 2-EHA, (methyl) propylene
The different monooctyl ester of acid, (methyl) acrylic acid nonyl ester, the different nonyl ester of (methyl) acrylic acid, (methyl) decyl acrylate, (methyl) acrylic acid are different
Last of the ten Heavenly stems ester, (methyl) acrylic acid hendecane base ester, (methyl) dodecylacrylate, (methyl) tridecyl acrylate, (first
Base) acrylic acid tetradecane base ester, (methyl) acrylic acid pentadecane base ester, (methyl) aliphatic acrylate, (methyl) propylene
Sour heptadecane base ester, (methyl) octadecyl acrylate, the different stearyl ester of (methyl) acrylic acid, (methyl) acrylic acid nonadecyl
Ester and (methyl) acrylic acid eicosane base ester etc. have (methyl) of the alkyl of the straight-chain that carbon number is 1~20 or branched
Alkyl acrylate.For (methyl) alkyl acrylate for above-mentioned oligomer, it can use a kind of (methyl)
Alkyl acrylate, two or more (methyl) alkyl acrylates can also be used.In the present embodiment, as above-mentioned
Oligomer is somebody's turn to do (methyl) alkyl acrylate, preferably using methyl methacrylate.
It is above-mentioned low from the viewpoint of realizing appropriate modulus of elasticity from the adhesive phase formed containing the oligomer
The ratio of the monomeric unit of (methyl) alkyl acrylate in polymers, from the alkyl with straight-chain or branched is excellent
Elect the weight % of the weight %, more preferably 20 weight % of the weight % of 10 weight %~90, more preferably 15 weight %~80~60 as.
In addition, above-mentioned oligomer can contain from carboxyl group-containing monomer, amide-containing monomer, emulsion stability, containing cyanogen
Base monomer, monomer containing sulfonic group, phosphorous acid-based monomers, monomer containing NCO, the monomeric unit of the monomer containing imide.
The weight average molecular weight (Mw) of above-mentioned oligomer is, for example, 1000~30000, is preferably 1000~20000, more preferably
For 1500~10000.From the viewpoint of ensuring good bonding force from the adhesive phase formed containing above-mentioned oligomer,
The weight average molecular weight of the oligomer is preferably more than 1000.On the other hand, from the adhesive formed containing above-mentioned oligomer
Especially it is to ensure that in layer from the viewpoint of bonding force at room temperature, the weight average molecular weight of the oligomer is preferably less than 30000.
The weight average molecular weight of above-mentioned oligomer can be measured by gel permeation chromatography (GPC) method.For example, it can make
Device (trade name " HLC-8120GPC ", TOSOH Co., Ltd's manufacture) is determined under following condition determinations with standard polyphenyl with GPC
The form of ethene scaled value obtains weight average molecular weight (Mw).
Post：By TSKgel SuperAWM-H (upstream side, TOSOH Co., Ltd's manufacture) and TSKgel SuperAW4000
(TOSOH Co., Ltd's manufacture) is connected in series with TSKgel SuperAW2500 (downstream, TOSOH Co., Ltd's manufacture)
Column dimension：Each post is
Column temperature (measurement temperature)：40℃
Eluent：Tetrahydrofuran (THF)
Flow：0.4mL/ minutes
Sample injection rate：20μL
Sample concentration：About 2.0g/L (tetrahydrofuran solution)
Standard specimen：Polystyrene
Detector：Differential refractometer (RI)
Adhesive phase 11,12 can each contain silane coupler.For silane coupler, it can enumerate for example：
γ-glycidoxypropyltrime,hoxysilane, γ-glycidoxypropyl group triethoxysilane, gamma-amino propyl group trimethoxy
Base silane and N- phenyl amino propyl trimethoxy silanes.For silane coupler, trade name " KBM- can also be enumerated
The commercially available product of 403 " (Shin-Etsu Chemial Co., Ltd's manufactures) etc..For silane coupler, preferred γ-glycidoxy
Propyl trimethoxy silicane.
In the case where adhesive phase 11 and/or adhesive phase 12 contain silane coupler, relative in adhesive phase
Adhesive or the parts by weight of acrylic polymer 100, the content of the silane coupler in adhesive phase is preferably 0.01 parts by weight
Above, more preferably more than 0.02 parts by weight.In addition, the content of the silane coupler in adhesive phase is relative to acrylic polymer
The parts by weight of compound 100 are preferably below 1 parts by weight, more preferably below 0.5 parts by weight.On this of the content of silane coupler
It is formed in the high adhesivity realized in the adhesive phase formed containing the silane coupler under humidified condition, is particularly to glass
High adhesivity in terms of be suitable.
Adhesive phase 11,12 can each contain ultra-violet absorber.Ultra-violet absorber is can to efficiently absorb purple
Outside line and the chemical substance that the energy conversion absorbed can be discharged for heat, infrared ray etc..As such ultraviolet
For absorbent, it can enumerate for example：Benzotriazole Ultraviolet Stabilizer, Hydroxyphenyltriazines ultra-violet absorber, bigcatkin willow
Esters of gallic acid ultra-violet absorber, benzophenone ultraviolet absorbent, hydroxy benzophenone ketone ultra-violet absorber and cyano group third
Olefin(e) acid esters ultra-violet absorber.Adhesive phase 11 and/or adhesive phase 12 can contain a kind of ultra-violet absorber, can also
Contain two or more ultra-violet absorbers.
For Benzotriazole Ultraviolet Stabilizer, it can enumerate for example：2- (2- hydroxyl -5- tert-butyl-phenyls) -
2H- BTAs (trade name " TINUVIN PS ", BASF AG manufacture), 3- (2H- BTA -2- bases) -5- (1,1- bis-
Methylethyl) -4- hydroxy phenylpropionic acids carbon number be 7~9 Arrcostab (" TINUVIN 384-2 ", BASF are public for trade name
Department's manufacture), 3- [3- tertiary butyl-4-hydroxies -5- (the chloro- 2H- BTAs -2- bases of 5-) phenyl] octyl propionates and 3- [the tertiary fourths of 3-
Base -4- hydroxyls -5- (the chloro- bases of 2H- BTAs -2 of 5-) phenyl] propionic acid 2- ethylhexyls mixture (trade name " TINUVIN
109 ", BASF AG's manufacture), double (1- methyl isophthalic acids-phenylethyl) phenol (commodity of 2- (2H- BTA -2- bases) -4,6-
Name " TINUVIN 900 ", BASF AG manufacture), 2- (2H- BTA -2- bases) -6- (1- methyl isophthalic acids-phenylethyl) -4-
(1,1,3,3- tetramethyl butyl) phenol (trade name " TINUVIN 928 ", BASF manufacture), 3- (3- (2H- BTAs -2-
Base) -5- tert-butyl-hydroxy phenyls) methyl propionate and Liquid Macrogol reaction product (trade name " TINUVIN 1130 ",
BASF AG manufacture), 2- (2H- BTA -2- bases) paracresol (trade name " TINUVIN P ", BASF AG manufacture),
Double (1- methyl isophthalic acids-phenylethyl) phenol (trade name " TINUVIN 234 ", the BASFs of 2- (2H- BTA -2- bases) -4,6-
Company manufacture), 2- [the chloro- 2H- BTAs -2- bases of 5-] -4- methyl-6-tert-butylphenols (trade name " TINUVIN326 ", bar
Si Fu companies manufacture), 2- (2H- BTA -2- bases) -4,6- di-tert-pentyl phenols (trade name " TINUVIN 328 ", Bath
Husband company manufacture), 2- (2H- BTA -2- bases) -4- (1,1,3,3- tetramethyl butyls) phenol (trade name " TINUVIN
329 ", BASF AG manufacture), 2,2'- di-2-ethylhexylphosphine oxides [6- (2H- BTA -2- bases) -4- (1,1,3,3- tetramethyl fourths
Base) phenol] (trade name " and TINUVIN 360 ", BASF AG manufacture), 2- (2H- BTA -2- bases) -6- dodecyls -
4- methylphenols (trade name " TINUVIN 571 ", BASF AG manufacture), 2- [2- hydroxyls -3- (3,4,5,6- tetrahydrochysene neighbour's benzene
Dicarboximide ylmethyl) -5- aminomethyl phenyls] BTA (trade name " Sumisorb 250 ", Sumitomo Chemical Co's system
Make) and 2,2'- di-2-ethylhexylphosphine oxide [6- (2H- BTA -2- bases) -4- tert-octyl phenols] (trade name " ADK STAB LA-31 ",
Asahi Denka Co., Ltd. manufactures).
For Hydroxyphenyltriazines ultra-violet absorber, it can enumerate for example：2- (double (the 2,4- dimethyl benzenes of 4,6-
Base) -1,3,5- triazine -2- bases) -5- hydroxyl phenols and [(carbon number be 10~16 alkyl oxy) methyl] oxirane
Reaction product (trade name " TINUVIN 400 ", BASF AG's manufacture), 2- [4,6- double (2,4- 3,5-dimethylphenyls) -1,3,5-
Triazine -2- bases] -5- [3- (dodecyl epoxide) -2- hydroxy propyloxy groups] phenol), 2- (2,4- dihydroxy phenyls) -4,6- it is double
(2,4- 3,5-dimethylphenyls) -1,3,5- triazines and the reaction product (trade name " TINUVIN of glycidic acid 2- ethylhexyls
405 ", BASF AG's manufacture), double (2- hydroxyl -4- the butoxy phenyls) -6- (2,4- dibutoxy phenyl) -1,3,5- of 2,4-
Triazine (trade name " TINUVIN 460 ", BASF AG manufacture), 2- (4,6- diphenyl -1,3,5-triazines -2- bases) -5- oneself
Base epoxide phenol (trade name " TINUVIN 1577 ", BASF AG manufacture), 2- (4,6- diphenyl -1,3,5-triazines -2-
Base) -5- [2- (2- ethyl hexanoyls epoxide) ethyoxyl] phenol (trade name " ADK STAB LA-46 ", Asahi Denka Co., Ltd.'s system
Make) and double (4- the phenyls) -1,3,5- triazine (business of 2- (2- hydroxyls -4- [1- octyl group Epoxide carbonyls ethyoxyl] phenyl) -4,6-
The name of an article " TINUVIN 479 ", BASF AG's manufacture).
For salicylate ultraviolet absorbent, it can enumerate for example：2- acryloxies phenol benzoate, 2-
Acryloxy -3- methyl benzoic acids phenyl ester, 2- acryloxy -4- methyl benzoic acids phenyl ester, 2- acryloxy -5- methyl
Phenol benzoate, 2- acryloxy -3- methoxy benzoic acids phenyl ester, 2 hydroxybenzoic acid phenyl ester, 2- hydroxy-3-methyl benzene first
Acid phenenyl ester, 2- hydroxy-4-methyls phenol benzoate, 2- hydroxy-5-methyl yl benzoic acids phenyl ester, 2- hydroxy 3-methoxybenzene formic acid
Phenyl ester and 3,5- di-tert-butyl-4-hydroxybenzoic acid 2, (" TINUVIN 120 ", BASF are public for trade name for 4- 6- di-tert-butyl phenyl esters
Department's manufacture).
For benzophenone ultraviolet absorbent, hydroxy benzophenone ketone ultra-violet absorber, example can be enumerated
Such as：2,4 dihydroxyl benzophenone, ESCALOL 567, BP-4,
2- hydroxyl -4- octyl group epoxides benzophenone, 4- dodecyl epoxide -2- dihydroxy benaophenonels, 4- benzyl epoxide -2- hydroxyl hexichol
(" KEMISORB 111 ", CHEMIPRO are melted into Co. Ltd. system to trade name for ketone, 2,2'- dihydroxy -4- methoxy benzophenones
Make), 2,2', 4,4'- tetrahydroxybenzophenones (trade name " SEESORB 106 ", SHIPRO are melted into Co., Ltd.'s manufacture) and 2,
2'- dihydroxy -4,4'- dimethoxy-benzophenones.
For cyanoacrylate ultraviolet absorbent, it can enumerate for example：2- alkyl cyanoacrylates, 2-
Alpha-cyanoacrylate cycloalkyl ester, 2- alpha-cyanoacrylates alkoxy alkyl, 2- alpha-cyanoacrylates alkenyl esters and 2- alpha-cyanoacrylates
Alkynyl ester.
It is from viewpoint while with high ultraviolet-absorbing with high photostability or transparent high from being readily obtained
Adhesive phase from the viewpoint of, the ultra-violet absorber contained in adhesive phase 11 and/or adhesive phase 12 is preferably selected from
It is made up of Benzotriazole Ultraviolet Stabilizer, Hydroxyphenyltriazines ultra-violet absorber and benzophenone ultraviolet absorbent
At least one of group.The ultra-violet absorber contained in adhesive phase 11 and/or adhesive phase 12 more preferably has carbon
Benzo three of the alkyl and hydroxyl that atomicity is more than 6 as the phenyl and the nitrogen atom bonding of composition BTA ring of substituent
Azole ultra-violet absorber.
In the case where adhesive phase 11 and/or adhesive phase 12 contain ultra-violet absorber, from control adhesive phase
Wavelength 350nm light transmissivity and from the viewpoint of realizing high ultraviolet-absorbing, relative to the bonding in adhesive phase
Agent or the parts by weight of acrylic polymer 100, the content of the ultra-violet absorber in adhesive phase be preferably 0.01 parts by weight with
Above, more preferably more than 0.05 parts by weight, more preferably more than 0.1 parts by weight.In addition, from suppressing in adhesive phase with ultraviolet
The generation of the adhesive yellowing phenomenon of the addition of light absorbers is so as to realizing that excellent optical characteristics, the viewpoint of high transparency are examined
Consider, relative to the adhesive in adhesive phase or the parts by weight of acrylic polymer 100, the ultra-violet absorber in adhesive phase
Content be preferably below 10 parts by weight, more preferably below 9 parts by weight, more preferably below 8 parts by weight.
Adhesive phase 11,12 can each contain light stabilizer.In the respective feelings containing light stabilizer of adhesive phase 11,12
Under condition, preferably contain ultra-violet absorber simultaneously.Light stabilizer can be caught by irradiating the light such as ultraviolet that can generate
Free radical chemical substance.For light stabilizer, it can enumerate for example：Phenols light stabilizer, phosphorous light stabilizer, sulphur
The amine light stabilizer such as ethers light stabilizer and hindered amines stabilizer.Adhesive phase 11 and/or adhesive phase 12 can contain
A kind of light stabilizer, two or more light stabilizers can also be contained.
For phenols light stabilizer, it can enumerate for example：2,6 di tert butyl 4 methyl phenol, 4- methylol -2,
6- DI-tert-butylphenol compounds, 2,6- di-t-butyl -4- ethyl -phenols, butylated hydroxyanisol, 3- (two tertiary fourths of 4- hydroxyls -3,5-
Base phenyl) propionic acid n-octadecane base ester, (the 4- hydroxy-3-methyl -5- tert-butyl groups) benzyl malonic acid distearyl ester, tocopherol, 2,
2'- di-2-ethylhexylphosphine oxides (4- methyl-6-tert-butylphenols), 2,2' methylene bis (4- ethyl -6- tert-butyl phenols), 4,4'- methylenes
Base bis(2,6-di-butyl phenol), 4,4' butylidene biss (6- tert-butyl-m-cresols), 4,4'- thiobis (first between the 6- tert-butyl groups
Phenol), styrenated phenol, N, N'- hexamethylene bis (3,5- di-t-butyl -4- hydroxyhydrocinnamamides), double (uncles of 3,5- bis-
Butyl -4- benzylphosphonic acids ethyl ester) calcium, 1,1,3- tri- (2- methyl -4- hydroxyl -5- tert-butyl-phenyls) butane, 1,3,5- tri-
Methyl -2,4,6- three (3,5- di-tert-butyl-4-hydroxyl benzyls) benzene, four [3- (3,5- di-tert-butyl-hydroxy phenyls) propionyl oxygen
Ylmethyl] methane, 1,6-HD-bis- [3- (3,5- di-tert-butyl-hydroxy phenyls) propionic ester], 2,2' methylene bis (4-
Methyl -6- cyclohexylphenols), 2,2' methylene bis [6- (1- methylcyclohexyls) paracresol], (the 4- tert-butyl groups -3- of 1,3,5- tri-
Hydroxyl -2,6- dimethyl benzyls) isocyanuric acid, 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyls) isocyanuric acid, three second two
Double [3- (3,5- di-t-butyls-the 4- of alcohol double [3- (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyls) propionic esters], 2,2'- oxalyl amido
Hydroxy phenyl) ethyl propionate], 6- (4- hydroxyl -3,5- di-tert-butyls amido) pungent sulfenyl -1,3,5- triazines of -2,4- two, to benzene
Double [the 2- tert-butyl group -4- methyl -6- (the 2- hydroxyl -3- tert-butyl group -5- methyl-benzyls) phenyl] esters of dioctyl phthalate, the double { 2- [3- of 3,9-
(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyls) propionyloxy] -1,1- dimethyl ethyls } four oxaspiros [5.5] of -2,4,8,10-
Hendecane and double { 2- [3- (3,5- di-tert-butyl-hydroxy phenyls) the propionyloxy] -1,1- dimethyl ethyls } -2,4 of 3,9-,
The oxaspiros of 8,10- tetra- [5.5] hendecane.
For phosphorous light stabilizer, it can enumerate for example：Phosphorous acid three (nonyl phenyl) ester, (2,4- of phosphorous acid three
Di-tert-butyl-phenyl) ester, [the 2- tert-butyl groups -4- (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyls the sulfenyl) -5- methylbenzenes of phosphorous acid three
Base] ester, the decyl ester of phosphorous acid three, phosphorous acid octyl group ester diphenyl, phosphorous acid didecyl base ester list phenylester, pentaerythrite two be sub-
Phosphate two (tridecyl) ester, pentaerythritol diphosphites distearyl the ester, (nonyl benzene of pentaerythritol diphosphites two
Base) ester, double (2,4- di-tert-butyl-phenyls) ester of pentaerythritol diphosphites, the double (uncles of 2,6- bis- of pentaerythritol diphosphites
Butyl -4- aminomethyl phenyls) ester, double (the 2,4,6- tri-terts phenyl) ester of pentaerythritol diphosphites, isopropylidene bis-phenol two be sub-
Double (the tridecanes of (the 2- tert-butyl group -5- methylphenols) diphosphites four of phosphate four (tridecyl) ester, the positive butanes of 4,4'-
Base) ester, 1,1,3- tri- (2- methyl -4- hydroxyl -5- tert-butyl-phenyls) butane triphosphite ester six (tridecyl) ester, biphenylene
Two phosphinate four (2,4- di-tert-butyl-phenyls) esters, the miscellaneous -10- phospho hetero phenanthrenes -10- oxides of 9,10- dihydro-9-oxies and three (2-
[(2,4,8,10- tetra-terts dibenzo [d, f] [1,3,2] dioxaphosphepin cycloheptadiene -6- bases) epoxide] ethyl) amine.
For thioether class light stabilizer, it can enumerate for example：Dilauryl thiodipropionate, the meat of thio-2 acid two
The dialkyl thiodipropionate such as cardamom ester and distearylthiodi-propionate compound and four [methylene (3- dodecyls
Sulfenyl) propionic ester] polyalcohol such as methane β-alkylmercaptopropionates compound.
For amine light stabilizer, it can enumerate for example：Dimethyl succinate and 4- hydroxyl -2,2,6,6- tetramethyls
Polymer (trade name " TINUVIN 622 ", BASF AG's manufacture), the polymer and N, N', the N " of base -1- piperidine ethanols,
N " '-four (double (butyl-(N- methyl -2,2,6,6- tetramethyl piperidine -4- bases) amino) triazine -2- bases of 4,6-) -4,7- diazas
The 1 of decane -1,10- diamines:1 reaction product (trade name " TINUVIN 119 ", BASF AG manufacture), it is poly- [6- (1,1,3,
3- tetramethyl butyls) amino -1,3,5- triazine -2,4- diyls } { 2,2,6,6- tetramethyl -4- piperidyls } imino group] six methylenes
Base { (2,2,6,6- tetramethyl -4- piperidyls) imino group } (trade name " TINUVIN 944 ", BASF AG manufacture), the last of the ten Heavenly stems two
Sour double (2,2,6,6- tetramethyl -4- piperidyls) esters (trade name " TINUVIN 770 ", BASF AG's manufacture), decanedioic acid are double
The reaction of (2,2,6,6- tetramethyls -1- (octyl group epoxide) -4- piperidyls) ester and 1,1- dimethyl ethyls hydrogen peroxide and octane
Product (trade name " TINUVIN 123 ", BASF AG's manufacture), [[3,5- double (1,1- dimethyl ethyl) -4- hydroxy phenyls]
Methyl] double (1,2,2,6,6- pentamethyl -4- piperidyls) ester (trade name " TINUVIN 144 ", the BASF AG of butylmalonic acid
Manufacture), three chloro- 1,3,5- triazines of hexamethylene and peroxidating N- butyl -2,2,6,6- tetramethyl -4- piperidinamines -2,4,6- it is anti-
Reaction product (trade name " TINUVIN 152 ", BASF AG's manufacture), the decanedioic acid of answering product and 2- ethylaminoethanols it is double (1,
2,2,6,6- pentamethyl -4- piperidyls) ester and decanedioic acid methyl esters 1,2,2,6,6- pentamethyl -4- piperidines base esters mixture (business
The name of an article " TINUVIN 292 ", BASF AG's manufacture) and 1,2,3,4- ethylene-dimalonic acids and 1,2,2,6,6- pentamethyl -4-
Four oxaspiros [5.5] of -2,4,8,10- are undecanoic mixes esterification by piperidine alcohols and 3,9- double (2- hydroxyl -1,1- dimethyl ethyls)
Thing (trade name " ADK STABLA-63P ", Asahi Denka Co., Ltd.'s manufacture).As amines stabilizer, particularly preferred hindered amines
Stabilizer.
In the case where adhesive phase 11 and/or adhesive phase 12 contain light stabilizer, filled from realizing within the adhesive layer
From the viewpoint of the light resistance divided, relative to the adhesive in adhesive phase or the parts by weight of acrylic polymer 100, adhesive
The content of light stabilizer in layer is preferably more than 0.1 parts by weight, more preferably more than 0.2 parts by weight.In addition, from adhesive
Suppress in layer from the viewpoint of being coloured caused by light stabilizer so as to realize high transparency, relative to the bonding in adhesive phase
Agent or the parts by weight of acrylic polymer 100, the content of the light stabilizer in adhesive phase are preferably below 5 parts by weight, are more excellent
Elect as below 3 parts by weight.
The adhesive or acrylic polymer contained in adhesive phase 11 and/or adhesive phase 12 can utilize be not on
The crosslinking agent for stating copolymerizable crosslinking agent is crosslinked.Utilize the adhesive or acrylic polymer carried out by the crosslinking agent
Crosslinking, the gel fraction of adhesive phase 11 and/or adhesive phase 12 can be adjusted.For such crosslinking agent, Ke Yilie
Citing is such as：Isocyanates crosslinking agent, epoxies crosslinking agent, melamine class crosslinking agent, peroxide crosslinking agent, ureas are handed over
Join agent, metal alkoxide class crosslinking agent, metal-chelating species crosslinking agent, metallic salt crosslinking agent, carbodiimide class crosslinking agent,Azoles
Quinoline class crosslinking agent, aziridines crosslinking agent and amine cross-linking agent.Adhesive phase 11 and/or adhesive phase 12 can contain a kind of be somebody's turn to do
Crosslinking agent, the two or more crosslinking agents can also be contained.In the present embodiment, preferably using isocyanates crosslinking agent and/
Or epoxies crosslinking agent.
For isocyanates crosslinking agent, it can enumerate for example：Lower aliphatic polyisocyanates, ester ring type are more
Isocyanates and aromatic polyisocyanate class.As lower aliphatic polyisocyanates, can enumerate for example：1,2- is sub-
Ethyl diisocyanate, 1,4- tetramethylene diisocyanates and 1,6- hexamethylene diisocyanates.As the more isocyanides of ester ring type
Esters of gallic acid, it can enumerate for example：Cyclopentylene diisocyanate, cyclohexylene diisocyanate, IPDI,
Hydrogenated toluene diisocyanate and hydrogenated xylene diisocyanate.As aromatic polyisocyanate class, can enumerate for example：
2,4 toluene diisocyanate, 2,6- toluene di-isocyanate(TDI)s, 4,4'- methyl diphenylene diisocyanates and phenylenedimethylidyne two
Isocyanates.In addition, as isocyanates crosslinking agent, can also enumerate：Trimethylolpropane/toluene di-isocyanate(TDI) addition
Thing (trade name " Coronate L ", Nippon Polyurethane Industry Co., Ltd. manufacture), the isocyanide of trimethylolpropane/hexa-methylene two
Acid esters addition product (trade name " Coronate HL ", Nippon Polyurethane Industry Co., Ltd. manufacture), trimethylolpropane/benzene two
Methylene diisocyanate addition product (trade name " Takenate D-110N ", Mitsui Chemicals, Inc manufacture) etc. commercially available product.
For epoxies crosslinking agent (multi-functional epoxy's compound), it can enumerate for example：N, N, N', N'- tetra- shrinks sweet
Double (N, the N- diglycidyl amino methyl) hexamethylenes of oil base m-xylene diamine, diglycidylaniline, 1,3-, 1,6- oneself
Hexanediol diglycidyl ether, neopentylglycol diglycidyl ether, ethylene glycol diglycidylether, propylene glycol diglycidylether,
The more glycidols of polyethyleneglycol diglycidylether, polypropylene glycol diglycidyl ether, sorbitol polyglycidylether, glycerine
Ether, pentaerythrite polyglycidyl ether, polyglycereol polyglycidyl ether, anhydrosorbitol polyglycidyl ether, trihydroxy methyl
Propane polyglycidyl ether, adipic acid 2-glycidyl ester, o-phthalic acid diglycidyl ester, three (2- hydroxyethyls) isocyanides
Urea acid esters triglycidyl group ether, resorcinolformaldehyde resin and bisphenol-S diglycidyl ether.In addition, as epoxies
Crosslinking agent, the epoxylite with two or more epoxy radicals can also be enumerated.In addition, as epoxies crosslinking agent, go back
Trade name " TETRAD C " (Mitsubishi Gas Chemical Co., Ltd's manufacture) etc. commercially available product can be enumerated.
Contain in adhesive phase 11 and/or adhesive phase 12 and be used to be crosslinked as above between acrylic polymer
In the case of described crosslinking agent, from the viewpoint of the sufficient gluing reliability to adherend is realized within the adhesive layer,
Relative to the adhesive in adhesive phase or the parts by weight of acrylic polymer 100, the content of the crosslinking agent in adhesive phase
Preferably more than 0.001 parts by weight, more preferably more than 0.01 parts by weight.It is in addition, appropriate from showing within the adhesive layer
From the viewpoint of flexibility is so as to realize good bonding force, relative to the adhesive or acrylic polymer in adhesive phase
100 parts by weight, the content of the crosslinking agent in adhesive phase is preferably below 10 parts by weight, more preferably below 5 parts by weight.
Adhesive phase 11,12 each can be as needed also containing crosslinking accelerator, tackifying resin, antiaging agent, filling
The colouring agents such as agent, pigment or dyestuff, antioxidant, chain-transferring agent, plasticizer, softening agent, surfactant and antistatic agent etc.
Additive.As tackifying resin, can enumerate for example：Rosin derivative, polyterpene resin (Port リ テ Le ペ Application Trees fat), oil
Resin and oil-soluble phenol resin.
From realizing adhesive tape X from the viewpoint of the side of adhesive phase 11 is to the sufficient bonding force of adherend, adhesive phase
11 thickness is preferably more than 5 μm, more preferably more than 10 μm, more preferably more than 15 μm.In addition, from the easiness of formation
Viewpoint considers, the thickness of adhesive phase 11 is preferably less than 1000 μm, more preferably less than 900 μm, be more preferably 800 μm with
Under.
From realizing adhesive tape X from the viewpoint of the side of adhesive phase 12 is to the sufficient bonding force of adherend, adhesive phase
12 thickness is preferably more than 5 μm, more preferably more than 10 μm, more preferably more than 15 μm.In addition, from the easiness of formation
Viewpoint considers, the thickness of adhesive phase 12 is preferably less than 1000 μm, more preferably less than 900 μm, be more preferably 800 μm with
Under.
In the adhesive tape X with the stepped construction comprising base material 10 and adhesive phase 11,12 as described above, base material is wide
The Elmendorf tearing strength in degree direction be below 0.5N and the Elmendorf tearing strength in length substrate direction be 1N with
On.The Elmendorf tearing strength in adhesive tape X substrate width direction be preferably below 0.45N, more preferably below 0.4N,
More preferably below 0.3N.The Elmendorf tearing strength in adhesive tape X length substrate direction is preferably more than 1.1N, more excellent
Elect more than 1.3N, more preferably more than 1.5N as.Elmendorf tearing strength is the value determined according to JIS K 7128-2.
In addition, the mist degree of the adhesive tape X of optics thickness direction is preferably less than 3%, more preferably less than 2.5%,
More preferably less than 2%, it is more preferably less than 1.5%, more preferably less than 1%.Mist degree is to be determined according to JIS K 7136
Value.Total light transmittance in adhesive tape X visible wavelength range is, for example, more than 85%.Total light transmittance is according to JIS K
The value of 7361-1 measure.
Adhesive tape X can be to be provided with release liner (partition) in the form of the adhesive surface 11a for covering adhesive phase 11.Bonding
Can be to be provided with release liner (partition) in the form of the adhesive surface 12a for covering adhesive phase 12 with X.Release liner is to be used to protect
Shield adhesive tape X adhesive phase 11,12 makes the element that it does not expose, and is shelled when adhesive tape X is bonded with adherend from adhesive tape X
From.For release liner, it can enumerate for example：It is base material with lift-off processing layer, low gluing comprising fluoropolymer
Property base material and the low adhesivity base material comprising non-polar polymer.The surface of release liner can implement demoulding processing, antifouling place
Reason or antistatic process.The thickness of release liner is, for example, 5 μm~200 μm.Specifically, adhesive tape X can be used to carry and covered
The form of the sheet of adhesive surface 11a, 12a of lid adhesive phase 11,12 release liner, it can also use with adhesive tape X and stripping
From the form that pad is alternately arranged the form of tubular is wound into a roll with release liner.
The adhesive tape X formed as described above can for example be manufactured in the following manner：Respectively formed adhesive phase 11,
12, adhesive phase 11,12 is then fitted in into base material 10 respectively.Adhesive phase 11 can for example be formed in the following manner：
The adhesive composition of the formation of coating adhesive layer 11 on defined release liner and form adhesive composition layer, it is viscous at this
Further stacking release liner, and make adhesive composition solidify between the release liner on mixture composite layer.On the other hand,
Adhesive phase 12 can for example be formed in the following manner：The formation of coating adhesive layer 12 is viscous on defined release liner
Mixture composite and form adhesive composition layer, the further stacking release liner in the adhesive composition layer and makes to glue
Mixture composite solidifies between the release liner.
As the adhesive composition of the formation of adhesive phase 11 and/or the adhesive composition of the formation of adhesive phase 12
For, such as use by irradiating adhesive composition of the active energy beam polymerisation progress so as to solidification.
That is, adhesive phase 11 and/or adhesive phase 12 are, for example, the solidfied material of active energy ray curable adhesive composition.Propylene
The active energy ray curable adhesive composition of acrylic binder layer formation, which at least contains, to be used to form acrylic polymer
Monomer, oligomer and the Photoepolymerizationinitiater initiater of compound.Monomer and oligomer in said composition can be for formation acrylic acid
Birds of the same feather flock together compound composition requirement monomer mixture so-called partial polymer form provide.In addition, the adhesive combines
Thing can contain composition of the other compositions used as needed as the adhesive phase to be formed.As for adhesive phase
Solidification and to active energy ray curable adhesive composition irradiation active energy beam for, can enumerate for example：
Ultraviolet, alpha ray, β rays, gamma-rays, neutron ray and electron ray, it is preferred to use ultraviolet.For receiving active energy
For irradiation, acrylic adhesive layer formation the active energy ray curable adhesive composition for measuring ray, warp
Cross the activation of Photoepolymerizationinitiater initiater and produce initiation reaction, the formation of polymerisation towards acrylic polymer is carried out.Using
Curing of the ultraviolet irradiation isoreactivity energy-ray irradiation as the curing adhesive composition of adhesive phase formation
When, suitable adhesive phase when cured is also readily obtained in the case that the film of the adhesive composition is thicker.Therefore,
Realize thicker but fill although adhesive phase 11 is being formed in for the solidfied material of active energy ray curable adhesive composition
The aspect of adhesive phase 11 divided after solidification is suitable.Adhesive phase 12 is active energy ray curable adhesive composition
Although being formed in for solidfied material realizes that thicker but fully after solidification the aspect of adhesive phase 12 is suitable.
For above-mentioned Photoepolymerizationinitiater initiater, it can enumerate for example：Benzoin ethers Photoepolymerizationinitiater initiater, acetophenones
Photoepolymerizationinitiater initiater, α -one alcohols Photoepolymerizationinitiater initiater, aromatic sulfonyl class Photoepolymerizationinitiater initiater, photolytic activity oximes photopolymerization
Initiator, benzoin class Photoepolymerizationinitiater initiater, dibenzoyl class Photoepolymerizationinitiater initiater, benzophenone Photoepolymerizationinitiater initiater, ketal
Class Photoepolymerizationinitiater initiater and thioxanthene ketone class Photoepolymerizationinitiater initiater.For benzoin ethers Photoepolymerizationinitiater initiater, it can enumerate
Such as：Benzoin methylether, benzoin ethyl ether, benzoin propyl ether, benzoin iso-propylether, benzoin isobutyl ether and 2,2- dimethoxies
Base -1,2- diphenylethane -1- ketone.For acetophenones Photoepolymerizationinitiater initiater, it can enumerate for example：2,2- diethoxies
Acetophenone, 2,2- dimethoxy -2- phenyl acetophenones, 1- hydroxycyclohexyl phenyl ketones (Alpha-hydroxy cyclohexyl phenyl ketone),
4- phenoxydichloroacetophenones and 4- tert-butyl group dichloroacetophenones.For α -one alcohols Photoepolymerizationinitiater initiaters, it can enumerate
Such as：2- methyl -2- hydroxypropiophenonepreparations and 1- [4- (2- hydroxyethyls) phenyl] -2- methylpropane -1- ketone.As aromatic series sulphur
For acyl chloride Photoepolymerizationinitiater initiater, such as 2- naphthalene sulfonyl chlorides can be enumerated.For photolytic activity oximes Photoepolymerizationinitiater initiater,
Such as 1- phenyl -1,2- propanedione -2- (O- ethoxy carbonyls) oxime can be enumerated.As benzoin class Photoepolymerizationinitiater initiater
Speech, can enumerate such as benzoin.For dibenzoyl class Photoepolymerizationinitiater initiater, such as dibenzoyl can be enumerated.As two
For Benzophenone class Photoepolymerizationinitiater initiater, it can enumerate for example：Benzophenone, benzoyl benzoic acid, 3,3'- dimethyl -4-
Methoxy benzophenone and polyvinyl benzophenone.For ketal class Photoepolymerizationinitiater initiater, it can enumerate for example：Biphenyl
Acyl dimethyl ketal.For thioxanthene ketone class Photoepolymerizationinitiater initiater, it can enumerate for example：Thioxanthones, CTX, 2- first
Base thioxanthones, 2,4- dimethyl thioxanthones, isopropyl thioxanthone, 2,4- diisopropylthioxanthones and dodecyl thioxanthones.It is living
The content of Photoepolymerizationinitiater initiater in property energy ray-curable adhesive composition is, for example, the weight % of 0.01 weight %~3.
As the adhesive composition of the formation of adhesive phase 11 and/or the adhesive combination of the formation of adhesive phase 12
Thing, it can use and contain the acrylic polymer as adhesive so that for example can be molten and what is solidified by heat drying
Formulation adhesive composition, Emulsion Adhesive composition.Said composition can contain use as needed it is other into being allocated as
For the composition for the adhesive phase to be formed.Acrylic polymer in the adhesive composition can be by by acrylic compounds
The starting monomer composition of polymer formation is polymerize and obtained.For polymerization, it can enumerate for example：Solution gathers
Conjunction, emulsion polymerization and polymerisation in bulk.When carrying out polymerisation in solution, as solvent, such as aromatic hydrocarbon, aliphatic hydrocarbon can be used
Class, ester ring type hydro carbons, esters and ketone.For aromatic hydrocarbon solvent, such as toluene and benzene can be enumerated.As fat
For the solvent of fat race hydro carbons, such as n-hexane and normal heptane can be enumerated.For solvent as ester ring type hydro carbons, Ke Yilie
Citing such as hexamethylene and hexahydrotoluene.For the solvent of esters, such as ethyl acetate and n-butyl acetate can be enumerated.
For the solvent of ketone, it can enumerate for example：Methyl ethyl ketone and methyl iso-butyl ketone (MIBK).In polymerisation in solution, it can make
With a kind of solvent, two or more solvents can also be used.
When starting monomer composition is polymerize in order to obtain acrylic polymer, polymerization initiator can be used.According to
The species of polymerisation can use such as Photoepolymerizationinitiater initiater, thermal polymerization.During polymerization, a kind of polymerization can be used to draw
Hair agent, two or more polymerization initiators can also be used.
For Photoepolymerizationinitiater initiater, it can enumerate for example：Above-mentioned benzoin ethers Photoepolymerizationinitiater initiater, acetophenone
Class Photoepolymerizationinitiater initiater, α -one alcohols Photoepolymerizationinitiater initiater, aromatic sulfonyl class Photoepolymerizationinitiater initiater, photolytic activity oximes light gather
Close initiator, benzoin class Photoepolymerizationinitiater initiater, dibenzoyl class Photoepolymerizationinitiater initiater, benzophenone Photoepolymerizationinitiater initiater, contracting
Ketone Photoepolymerizationinitiater initiater and thioxanthene ketone class Photoepolymerizationinitiater initiater.The usage amount of Photoepolymerizationinitiater initiater is for example relative to monomer component
Total amount (100 parts by weight) is the parts by weight of 0.01 parts by weight~3.
For thermal polymerization, it can enumerate for example：Azo type polymerization initiator, peroxide type polymerization trigger
Agent and oxidation-reduction type polymerization initiator.For azo type polymerization initiator, it can enumerate for example：2,2'- azos two are different
Butyronitrile, 2,2'- azos double (2- methylbutyronitriles), double (2 Methylpropionic acid) dimethyl esters of 2,2'- azos and double (the 4- cyanogen of 4,4'- azos
Base valeric acid).For peroxide type polymerization initiator, it can enumerate for example：Benzoyl peroxide and peroxidating maleic acid
The tert-butyl ester.The usage amount of thermal polymerization is 0.05 parts by weight~0.3 for example relative to monomer component total amount (100 parts by weight)
Parts by weight.
When carrying out for obtaining the polymerization of aforesaid propylene acids polymers, in order to adjust the molecule of acrylic polymer
Amount, can use chain-transferring agent.For chain-transferring agent, it can enumerate for example：α-thioglycerol, 2 mercapto ethanol, 2,3-
Dimercapto -1- propyl alcohol, octyl mercaptan, tertiary nonyl mercaptan, lauryl mercaptan (lauryl mercaptan), tert-dodecylmercaotan, contracting
Water glyceryl mercaptan, TGA, methyl thioglycolate, ethyl thioglycolate, TGA propyl ester, TGA butyl ester, mercapto
The guanidine-acetic acid tert-butyl ester, 2-ethylhexyl mercaptoacetate, TGA monooctyl ester, isooctyl thioglycolate, TGA last of the ten Heavenly stems ester and mercapto
Guanidine-acetic acid dodecyl ester.For chain-transferring agent, a kind of chain-transferring agent can be used, two or more chains can also be used to turn
Move agent.In the present embodiment, as chain-transferring agent, preferably using α-thioglycerol.The usage amount of chain-transferring agent is for example relative
In the monomer component total amount (100 parts by weight) for obtaining acrylic polymer be the parts by weight of 0.01 parts by weight~0.5.
Active energy ray curable adhesive composition, solvent type adhesive composition, Emulsion Adhesive composition
Deng, in the case that the adhesive composition of adhesive phase formation includes aforesaid propylene acid based oligomerization thing, the oligomer can be with
By the way that the starting monomer composition of composition requirement is polymerize to obtain.For polymerization, it can enumerate for example：Solution
Polymerization, emulsion polymerization and polymerisation in bulk.For the solvent for polymerisation in solution, it can enumerate as can be for obtaining
The material as described above of the solvent used in the polymerisation in solution of acrylic polymer.In the polymerisation in solution, it can use
A kind of solvent, two or more solvents can also be used.In addition, starting monomer composition is gathered in order to obtain above-mentioned oligomer
During conjunction, polymerization initiator can be used.For the polymerization initiator, it can enumerate as can be for obtaining acrylic acid
Birds of the same feather flock together the above-mentioned Photoepolymerizationinitiater initiater or thermal polymerization of the polymerization initiator that use in the polymerization of compound., can be with during polymerization
Using a kind of polymerization initiator, two or more polymerization initiators can also be used.
Such as according to base material 10 possessed by the adhesive tape X manufactured with upper type it is polyesters base material as described above.So
Composition be suitable for enjoying the polyesters such as heat resistance, the transparency, dimensional stability in double-faced adhesive tape base material and adhesive tape X
The various characteristics that base material is easily shown.
In addition, base material 10 possessed by adhesive tape X is width uniaxial tension polyesters base material as described above.The base material
10 thickness is as described above more than 75 μm, is preferably more than 80 μm.The thickness of the base material 10 be preferably as described above 150 μm with
Under, more preferably less than 125 μm.The tearing strengths such as the Elmendorf tearing strength of double-faced adhesive tape are consumingly controlled by base material
Mechanical property, these compositions are suitable for realizing that the Elmendorf tearing strength in substrate width direction is in adhesive tape X
The Elmendorf tearing strength in below 0.5N and length substrate direction is more than 1N above-mentioned composition.
In addition, the Elmendorf tearing strength in adhesive tape X substrate width direction as described above for below 0.5N,
Preferably below 0.45N, more preferably below 0.4N, more preferably below 0.3N.At the same time, adhesive tape X length substrate
The Elmendorf tearing strength in direction is as described above more than 1N, is preferably more than 1.1N, is more preferably more than 1.3N, is more excellent
Elect more than 1.5N as.These compositions are suitable for realizing along Elmendorf tearing strength relatively intentionally as little as in adhesive tape X
Good the tearing property of hand in below 0.5N substrate width direction.Also, Elmendorf tearing strength is on length substrate direction
It is suitable for improving the sensing along the tear in substrate width direction in adhesive tape X for more than 2 times of the composition in substrate width direction
Property.Therefore, this composition is suitable for making peeling force act on bonding in the case where adhesive tape X is in the state for fitting in adherend
Length substrate direction with X is so that adhesive tape X is suitably peeled off with not ftractureing from adherend.Specifically, it is suitable for
Peeling force is acted on during operation (the reprocessing operation) first peeled off and then be bonded again after adhesive tape X is bonded with adherend viscous
Crossed belt X length substrate direction is so that adhesive tape X is suitably peeled off with not ftractureing from adherend.Not only in substrate width side
It is inclined to double-faced adhesive tape when reprocessing the stripping of operation to and the optics that is also easily torn on length substrate direction
It is difficult to suitably peel off from adherend in easy cracking.The optics for generating cracking cannot be used for pasting again with double-faced adhesive tape
Close.On the other hand, adhesive tape X has with being adapted for carrying out along the substrate width direction of good the tearing property of hand in substrate width direction
Elmendorf tearing strength compares sufficiently large length substrate direction Elmendorf tearing strength, therefore is suitable for adding again
Peeling force is set to act on length substrate direction so as to not peel off suitably with ftractureing during the industry that works.
As described above, adhesive tape X is suitable for realizing good tearing property of hand and height in the lump while with polyesters base material
Re-workability.
As described above, in the face of adhesive tape X base material 10 phase difference be preferably more than 1500nm, more preferably 3000nm with
Upper, more preferably more than 6000nm.It is such composition be suitable in filling liquid crystal display device as display screen most before
The mode between liquid crystal panel in the transparent cover plate and device in face suppresses for example across polarisation too in the case of setting adhesive tape X
The lens with polarizing function such as positive mirror produce so-called blank screen (Block ラ ッ Network ア ウ ト) when carrying out visuognosis to the display screen
Phenomenon.In addition, phase difference is bigger in the face of base material 10, then the transparent cover plate and liquid crystal panel in filling liquid crystal display device
Between mode adhesive tape X is set in the case of tend to more suppress saturating with polarizing function such as across polarized sunglasses
Mirror carries out so-called rainbow shaped laser spot (rainbow system ラ) phenomenon during visuognosis to the display screen.
Embodiment
Hereinafter, based on embodiment, the present invention will be described in more detail, but the invention is not restricted to these embodiments.
[Production Example of acrylic compounds oligomer]
In reaction vessel, 60 weight parts of methacrylic acid tetrahydrochysene dicyclopentadiene base esters (DCPMA), 40 weights will be contained
Part methyl methacrylate (MMA), 3.5 parts by weight are measured as α-thioglycerol of chain-transferring agent and 100 parts by weight as polymerization
The mixture of the toluene of solvent stirs 1 hour at 70 DEG C, in a nitrogen atmosphere.Then, trigger 0.2 parts by weight as polymerization
2, the 2'- azodiisobutyronitriles of agent are added in the mixture in reaction vessel and prepare reaction solution, and are carried out at 70 DEG C
2 hours react.Then, carried out reacting for 2 hours at 80 DEG C.Then, the reaction solution in reaction vessel is placed in 130 DEG C
Temperature atmosphere under, dried from the reaction solution and remove toluene, chain-transferring agent and unreacted monomer.Thus, solid has been obtained
The acrylic compounds oligomer of shape.The weight average molecular weight (Mw) of the acrylic compounds oligomer is 5.1 × 103。
[acrylic pressure-sensitive adhesive compositions C1 preparation example]
Containing 78 parts by weight of acrylic acid 2- ethylhexyls (2EHA), 18 parts by weight NVPs (NVP)
0.035 the first Photoepolymerizationinitiater initiater of parts by weight is added with the monomer mixture of 4 parts by weight of acrylic acid 2- hydroxy methacrylates (HEA)
(trade name " Irgacure 651 ", BASF AG's manufacture) and 0.035 parts by weight the second Photoepolymerizationinitiater initiater (trade name
" Irgacure 184 ", BASF AG's manufacture), then determining its viscosity using viscosimeter for the mixture
Ultraviolet is irradiated until the viscosity of the mixture reaches about 20Pas using ultraviolet lamp simultaneously.In viscosimetric analysis,
The rotary speed of rotator of device is set as 10rpm, and measurement temperature is set as 30 DEG C.Thus, obtained as the list in mixture
The partial polymer that a part for body composition is polymerized prepolymer composite (contain without polymerisation monomer into
Point).Then, by the 100 parts by weight prepolymer composites, 11.8 parts by weight aforesaid propylene acid based oligomerization things, 17.6 parts by weight third
Olefin(e) acid 2- hydroxy methacrylates (HEA), 0.294 parts by weight 1,6 hexanediol diacrylate (HDDA) and 0.353 parts by weight silane are even
Join agent (trade name " KBM-403 ", Shin-Etsu Chemial Co., Ltd's manufacture) mixing, so as to obtain acrylic adhesives group
Compound (acrylic pressure-sensitive adhesive compositions C1).
[acrylic pressure-sensitive adhesive compositions C2 preparation example]
In the flask (reaction vessel) with reflux condenser, nitrogen ingress pipe, agitator and thermometer, it will contain
100 parts by weight of acrylic acid N-butyls (BA), 5 parts by weight of acrylic acid (AA), 0.075 parts by weight of acrylic acid 2- hydroxy methacrylates (HEA),
0.2 parts by weight as polymerization initiator benzoyl peroxide (trade name " and Niper BW ", NOF Corp manufacture)
With 205 parts by weight as the ethyl acetate of polymer solvent mixture in a nitrogen atmosphere gentle agitation while enter at 63 DEG C
Go 4 hours and reacted.Thus, the solution (acrylic compounds that acrylic polymer is contained with about 35 weight % concentration have been obtained
Polymer solution).Then, using ethyl acetate dilute acrylic polymer solution with cause acrylic polymer concentration into
For 29 weight %, it is 0.6 then to be added in the acrylic polymer solution relative to the parts by weight of acrylic polymer 100
The trimethylolpropane of parts by weight/toluene di-isocyanate(TDI) addition product (trade name " CoronateL ", Japanese polyurethane industry strain
Formula commercial firm manufacture) and 0.075 parts by weight silane coupler (trade name " KBM-403 ", Shin-Etsu Chemial Co., Ltd's system
Make), the mixing of about 1 minute is carried out at 25 DEG C, so as to obtain solvent type acrylic pressure-sensitive adhesive compositions (acrylic acid
Class adhesive composition C2).
[embodiment 1]
<The formation of first adhesive phase>
In polyethylene terephthalate (PET) class release liner (125 μm of thickness, Nitto Denko Corp's manufacture)
Upper coating aforesaid propylene acrylic binder composition C1, so as to form adhesive composition layer.Then, combined in the adhesive
Further stacking PET classes release liner (125 μm of thickness, Nitto Denko Corp's manufacture), covers the adhesive group in nitride layer
Compound layer is so as to blocking oxygen.Had in this way [release liner/adhesive composition layer/release liner]
It is laminated the layered product (layered product L1 ') formed.Then, black light is used from the side of one release liner to layered product L1 '
It is 3mW/cm that lamp (Toshiba Corporation's manufacture), which irradiates 300 seconds illumination,2Ultraviolet.Thus layered product L1 ' adhesive group is made
Compound layer is solidified to form adhesive phase (first adhesive phase), so as to be had [release liner/adhesive phase (first
Adhesive phase)/release liner] stacking form layered product (layered product L1).The thickness of first adhesive phase in layered product L1
Spend for 100 μm.
<The formation of second adhesive phase>
The bonding of aforesaid propylene acids is coated with PET classes release liner (125 μm of thickness, Nitto Denko Corp's manufacture)
Agent composition C1, so as to form adhesive composition layer.Then, PET classes are further laminated in the adhesive composition layer
Release liner (125 μm of thickness, Nitto Denko Corp's manufacture), covers the adhesive composition layer so as to blocking oxygen.With
Such mode is had the layered product (stacking that the stacking of [release liner/adhesive composition layer/release liner] is formed
Body L2 ').Then, layered product L2 ' is shone from the side of one release liner using black light lamp (Toshiba Corporation's manufacture)
It is 3mW/cm to penetrate 300 seconds illumination2Ultraviolet.Thus layered product L2 ' adhesive composition layer is made to be solidified to form adhesive
Layer (second adhesive phase), so as to be had the layer of [release liner/adhesive phase (second adhesive phase)/release liner]
The folded layered product (layered product L2) formed.The thickness of second adhesive phase in layered product L2 is 500 μm.
<The making of optics double-faced adhesive tape>
Prepare to polyethylene terephthalate film (trade name " COSMOSHINE SRF ", in face that thickness is 80 μm
Phase difference 8400, Japan spin Co., Ltd. manufacture) it is two-sided implement sided corona treatment obtained from film (film F1), from above-mentioned stacking
A release liner is peeled off in body L1 (release liner/first adhesive phase/release liner), is then revealed via by the stripping
The first adhesive layer surface gone out, by the unilateral first adhesive phase with release liner and film F1A face fitting.Thus,
There is [release liner/first adhesive phase/film F1] stacking form layered product.Then, from above-mentioned layered product L2
Peel off a release liner in (release liner/second adhesive phase/release liner), then expose via by the stripping
Second adhesive layer surface, by the unilateral second adhesive phase with release liner and above-mentioned film F1Another face fitting.It is logical
Mode as described above is crossed to have made with [the film F of release liner/first adhesive phase (100 μm of thickness)/as base material1It is (thick
Degree 80 μm)/second adhesive phase (500 μm of thickness)/release liner] and stacking form optics double-faced adhesive tape.Do not include
The thickness of the optics double-faced adhesive tape of the embodiment 1 of the thickness of release liner is 680 μm.
[embodiment 2]
Using being 80 μm of polyethylene terephthalate film to thickness (by " COSMOSHINE SRF " easy gluing place
Reason layer replaces with the film of the easy gluing process layer of hard conating purposes, phase difference 8400 in face, and Co., Ltd.'s manufacture is spun by Japan) it is double
Film (film F obtained from face implements sided corona treatment2) replace film F1As the base material of optics double-faced adhesive tape, in addition with
Mode same as Example 1 has made the optics double-faced adhesive tape of embodiment 2.The implementation of the thickness of release liner is not included
The thickness of the optics double-faced adhesive tape of example 2 is 680 μm.
[embodiment 3]
The thickness of second adhesive phase is set as 100 μm of 500 μm of replacements, in addition with side same as Example 1
Formula has made the optics double-faced adhesive tape of embodiment 3.The optics double-sided adhesive of the embodiment 3 of the thickness of release liner is not included
The thickness of crossed belt is 280 μm.
[embodiment 4]
In film F1One side coating aforesaid propylene acrylic binder composition C2, then being heated 60 seconds at 130 DEG C makes it
Dry and solidify, so as in film F1On to form thickness be 12 μm of adhesive phase (first adhesive phase).Then, in the bonding
PET classes release liner (125 μm of thickness, Nitto Denko Corp's manufacture) is bonded on the surface of oxidant layer.Thus, had
The layered product (layered product L3) that the stacking of [release liner/adhesive phase (first adhesive phase)/release liner] is formed.The opposing party
Face, in the one side coating aforesaid propylene acids bonding of PET classes release liner (125 μm of thickness, Nitto Denko Corp's manufacture)
Agent composition C2, then being heated at 130 DEG C makes it dry and solidify for 60 seconds, is so as to form thickness on the release liner
12 μm of adhesive phase (second adhesive phase).Then, by above-mentioned layered product L3 via its film F1Side surface and the adhesive phase
Surface fitting.Having made in the manner has [release liner/first adhesive phase (12 μm of thickness)/be used as base
The film F of material1(80 μm of thickness)/second adhesive phase (12 μm of thickness)/release liner] stacking form embodiment 4 optics
Use double-faced adhesive tape.The thickness for not including the optics double-faced adhesive tape of the embodiment 4 of the thickness of release liner is 104 μm.
[comparative example 1]
Using to polyethylene terephthalate film (trade name " XD500P ", phase difference in face that thickness is 75 μm
3000, Dongli Ltd. manufacture) it is two-sided implement sided corona treatment obtained from film (film F3) replace film F1Used as optics double
The base material of face adhesive tape, and the thickness of second adhesive phase is set as 100 μm of 500 μm of replacements, in addition with implementation
The identical mode of example 1 has made the optics double-faced adhesive tape of comparative example 1.The comparative example 1 of the thickness of release liner is not included
The thickness of optics double-faced adhesive tape is 275 μm.
[comparative example 2]
Use film F3Instead of film F1As the base material of optics double-faced adhesive tape, in addition with side same as Example 4
Formula has made the optics double-faced adhesive tape of comparative example 2.The optics double-sided adhesive of the comparative example 2 of the thickness of release liner is not included
The thickness of crossed belt is 104 μm.
<Elmendorf tearing strength>
For the optics from embodiment and comparative example with each sample piece (60mm × 75mm) cut out in double-faced adhesive tape,
Device (trade name " Elmendorf tear test machine ", Tester industry strain formulas are determined using Elmendorf tearing strength
Commercial firm manufacture), respectively determine adhesive tape base material width (TD) Elmendorf tearing strength (N) and adhesive tape base material
Length direction (MD) Elmendorf tearing strength (N).The measure is carried out according to JIS K 7128-2.What is be measured
In sample strip, the otch for being 20mm along the length of measure direction (TD or MD) extension from its end is previously provided with.In the survey
In fixed, determine to by so that assigning the resistance of the tear load of sample strip in a manner of the otch further extends by device.Separately
Outside, the measurement maximum of the said apparatus used in the measure is 1N.The result of the measure is shown in Table 1.
<Tearing property of hand>
For embodiment and each optics double-faced adhesive tape of comparative example, the tearing property of hand in its substrate width direction has been investigated.
Specifically, for having peeled off the optics double-faced adhesive tapes of two release liners, test by the hand along its substrate width direction
Torn caused by the industry that works.In handwork inspection, it is good that situation about can easily tear is evaluated as tearing property of hand
(zero), by the situation for failing tear, to be evaluated as tearing property of hand bad (×).It the results are shown in table 1.
<Mist degree>
Advised using haze meter HM-150 types (manufactured by Murakami K. K.'s dye technology research) according in JIS K 7136
Fixed method determines the mist degree (%) of each optics double-faced adhesive tape of embodiment and comparative example.The measure is directed to two peeling liners
Pad, which is stripped and is in, fits in slide (trade name " Slide glass S1112 ", thickness 1.0mm~1.2mm, loose ripple nitre
The manufacture of sub- Industrial Co., Ltd) the optics of state carried out with double-faced adhesive tape.It the results are shown in table 1.
[evaluation]
The optics of the embodiment 1~4 of composition with the present invention realizes good tearing property of hand with double-faced adhesive tape.With
This is relative, and the optics of comparative example 1,2 can not be torn with double-faced adhesive tape along substrate width direction with hand, is not carried out good
Tearing property of hand.
Claims (8)
1. a kind of optics double-faced adhesive tape, wherein,
The optics with double-faced adhesive tape have comprising first adhesive phase, second adhesive phase and the first adhesive phase with
The stepped construction of transparent base between second adhesive phase,
The transparent base is substrate width direction uniaxial tension polyesters base material and has more than 75 μm of thickness, and
Elmendorf tearing strength of the optics with double-faced adhesive tape on substrate width direction is below 0.5N and in base
Elmendorf tearing strength on material length direction is more than 1N.
2. optics double-faced adhesive tape as claimed in claim 1, wherein, the thickness of the transparent base is less than 150 μm.
3. optics double-faced adhesive tape as claimed in claim 1, wherein, the stretching ratio of the width of the transparent base
For 2.5~6 times.
4. optics double-faced adhesive tape as claimed in claim 1, wherein, the thickness of the first adhesive phase is more than 5 μm,
And the thickness of the second adhesive phase is more than 5 μm.
5. optics double-faced adhesive tape as claimed in claim 1, wherein, the first adhesive phase and/or second adhesive
Layer contains to be selected to be made up of acrylic adhesives, polyurethane binding, polysiloxane-based adhesive and rubber adhesive
At least one of group.
6. optics double-faced adhesive tape as claimed in claim 1, wherein, the first adhesive phase and/or described second viscous
Mixture layer is the solidfied material of active energy ray curable adhesive composition.
7. optics double-faced adhesive tape as claimed in claim 1, wherein, the mist degree of the optics double-faced adhesive tape is 3%
Below.
8. such as optics double-faced adhesive tape according to any one of claims 1 to 7, wherein, the transparent base has
Phase difference in more than 1500nm face.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016133098A JP6870929B2 (en) | 2016-07-05 | 2016-07-05 | Double-sided adhesive tape for optics |
| JP2016-133098 | 2016-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107629711A true CN107629711A (en) | 2018-01-26 |
Family
ID=60947444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710537703.1A Pending CN107629711A (en) | 2016-07-05 | 2017-07-04 | Optics double-faced adhesive tape |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6870929B2 (en) |
| KR (4) | KR20180005116A (en) |
| CN (1) | CN107629711A (en) |
| TW (1) | TWI740975B (en) |
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| JP3496992B2 (en) * | 1994-12-08 | 2004-02-16 | 株式会社ユポ・コーポレーション | Uniaxially stretched multilayer film and airline tag using the same |
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2016
- 2016-07-05 JP JP2016133098A patent/JP6870929B2/en active Active
-
2017
- 2017-06-30 KR KR1020170083074A patent/KR20180005116A/en not_active Application Discontinuation
- 2017-07-04 TW TW106122332A patent/TWI740975B/en active
- 2017-07-04 CN CN201710537703.1A patent/CN107629711A/en active Pending
-
2022
- 2022-04-22 KR KR1020220050094A patent/KR20220059449A/en not_active IP Right Cessation
-
2024
- 2024-04-09 KR KR1020240047801A patent/KR20240054237A/en active Application Filing
- 2024-04-09 KR KR1020240047800A patent/KR20240054931A/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20240054931A (en) | 2024-04-26 |
| TW201819566A (en) | 2018-06-01 |
| KR20240054237A (en) | 2024-04-25 |
| JP6870929B2 (en) | 2021-05-12 |
| KR20180005116A (en) | 2018-01-15 |
| TWI740975B (en) | 2021-10-01 |
| KR20220059449A (en) | 2022-05-10 |
| JP2018002917A (en) | 2018-01-11 |
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