JP5046735B2 - Film bonding apparatus and polarizing plate manufacturing apparatus - Google Patents
Film bonding apparatus and polarizing plate manufacturing apparatus Download PDFInfo
- Publication number
- JP5046735B2 JP5046735B2 JP2007122696A JP2007122696A JP5046735B2 JP 5046735 B2 JP5046735 B2 JP 5046735B2 JP 2007122696 A JP2007122696 A JP 2007122696A JP 2007122696 A JP2007122696 A JP 2007122696A JP 5046735 B2 JP5046735 B2 JP 5046735B2
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- film
- lamp
- epoxy resin
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- heating
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- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 239000000853 adhesive Substances 0.000 claims description 78
- 230000001070 adhesive effect Effects 0.000 claims description 76
- 238000010438 heat treatment Methods 0.000 claims description 54
- 239000003822 epoxy resin Substances 0.000 claims description 53
- 229920000647 polyepoxide Polymers 0.000 claims description 53
- 230000003287 optical effect Effects 0.000 claims description 39
- 230000001681 protective effect Effects 0.000 claims description 19
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims 1
- -1 cyclic olefin Chemical class 0.000 description 11
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 229910001507 metal halide Inorganic materials 0.000 description 8
- 150000005309 metal halides Chemical class 0.000 description 8
- 239000003999 initiator Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 7
- 125000003700 epoxy group Chemical group 0.000 description 6
- 238000010030 laminating Methods 0.000 description 6
- 239000003504 photosensitizing agent Substances 0.000 description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052740 iodine Inorganic materials 0.000 description 5
- 239000011630 iodine Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 4
- 229920005672 polyolefin resin Polymers 0.000 description 4
- 229920002284 Cellulose triacetate Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 125000003367 polycyclic group Chemical group 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- HBGPNLPABVUVKZ-POTXQNELSA-N (1r,3as,4s,5ar,5br,7r,7ar,11ar,11br,13as,13br)-4,7-dihydroxy-3a,5a,5b,8,8,11a-hexamethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1h-cyclopenta[a]chrysen-9-one Chemical compound C([C@@]12C)CC(=O)C(C)(C)[C@@H]1[C@H](O)C[C@]([C@]1(C)C[C@@H]3O)(C)[C@@H]2CC[C@H]1[C@@H]1[C@]3(C)CC[C@H]1C(=C)C HBGPNLPABVUVKZ-POTXQNELSA-N 0.000 description 1
- QUWZMFYOBQVLPQ-UHFFFAOYSA-N 1,9-dibutoxyanthracene Chemical compound C1=CC=C2C(OCCCC)=C3C(OCCCC)=CC=CC3=CC2=C1 QUWZMFYOBQVLPQ-UHFFFAOYSA-N 0.000 description 1
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 description 1
- BTJPUDCSZVCXFQ-UHFFFAOYSA-N 2,4-diethylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC(CC)=C3SC2=C1 BTJPUDCSZVCXFQ-UHFFFAOYSA-N 0.000 description 1
- SLJFKNONPLNAPF-UHFFFAOYSA-N 3-Vinyl-7-oxabicyclo[4.1.0]heptane Chemical compound C1C(C=C)CCC2OC21 SLJFKNONPLNAPF-UHFFFAOYSA-N 0.000 description 1
- MECNWXGGNCJFQJ-UHFFFAOYSA-N 3-piperidin-1-ylpropane-1,2-diol Chemical compound OCC(O)CN1CCCCC1 MECNWXGGNCJFQJ-UHFFFAOYSA-N 0.000 description 1
- RBHIUNHSNSQJNG-UHFFFAOYSA-N 6-methyl-3-(2-methyloxiran-2-yl)-7-oxabicyclo[4.1.0]heptane Chemical compound C1CC2(C)OC2CC1C1(C)CO1 RBHIUNHSNSQJNG-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000006677 Appel reaction Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 239000004844 aliphatic epoxy resin Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 239000012954 diazonium Substances 0.000 description 1
- 150000001989 diazonium salts Chemical class 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical class I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 150000002921 oxetanes Chemical class 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
- B29C65/1406—Ultraviolet [UV] radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
- B29C65/1409—Visible light radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
- B29C65/1412—Infrared [IR] radiation
- B29C65/1416—Near-infrared radiation [NIR]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Description
本発明は、光カチオン硬化型エポキシ樹脂系接着剤により偏光子フィルムと保護フィルム及び/又は光学補償フィルムとを接着するための装置に関する。 The present invention relates to an apparatus for adhering a polarizer film and a protective film and / or an optical compensation film with a photocationically curable epoxy resin adhesive.
光学部材や液晶表示装置において用いられる偏光板は、ポリビニルアルコール(PVA)系偏光子フィルムの少なくとも一方の面に保護フィルムもしくは光学補償フィルムを接着剤で貼り合せて製造されるのが一般的である。かかる接着剤として、水系接着剤や有機溶剤系の接着剤が使用されてきたが、これらに代わりに、近年、非水系、非有機溶剤系である非溶剤系接着剤、特に光カチオン硬化型エポキシ樹脂系接着剤が使用されるようになってきている。 A polarizing plate used in an optical member or a liquid crystal display device is generally manufactured by bonding a protective film or an optical compensation film with an adhesive on at least one surface of a polyvinyl alcohol (PVA) polarizer film. . As such adhesives, water-based adhesives and organic solvent-based adhesives have been used, but in recent years, non-solvent-based adhesives that are non-aqueous and non-organic solvent-based, in particular, photocation curable epoxy. Resin-based adhesives have been used.
従来、接着剤として光カチオン硬化型エポキシ樹脂系接着剤を用いる偏光板の製造装置においては、光カチオン硬化型エポキシ樹脂系接着剤を十分に硬化するために、強い照度の紫外線を照射して照射熱や反応熱で硬化反応を加速するための紫外線ランプが設置されているか、あるいは、紫外線照射後に加熱して硬化反応を完結(アフターキュア)するための加熱オーブン等が設置されていた。光カチオン硬化型エポキシ樹脂系接着剤は紫外線照射されると、それに含まれる光重合開始剤(触媒)が活性化し、酸を発生する。この酸が光カチオン硬化型エポキシ樹脂のエポキシ基と反応し、エポキシ基が開環してカルボカチオンが生成する。このカルボカチオンが次々とエポキシ樹脂のエポキシ基と反応してエポキシ樹脂系接着剤が硬化する。ところが、カルボカチオンとエポキシ基の反応は常温では起こりにくい反応であるため、強い照度の光を長く照射するか、あるいは、紫外線照射後にオーブン等により加熱して、カルボカチオンとエポキシ基の反応を加速又は完結する必要があった。 Conventionally, in a polarizing plate manufacturing apparatus using a photocationic curable epoxy resin adhesive as an adhesive, in order to sufficiently cure the photocationic curable epoxy resin adhesive, it is irradiated by irradiating with strong ultraviolet light. An ultraviolet lamp for accelerating the curing reaction with heat or reaction heat is installed, or a heating oven or the like is installed for heating after ultraviolet irradiation to complete the curing reaction (aftercuring). When the photocation curable epoxy resin adhesive is irradiated with ultraviolet rays, the photopolymerization initiator (catalyst) contained therein is activated to generate an acid. This acid reacts with the epoxy group of the photocationically curable epoxy resin, and the epoxy group is opened to generate a carbocation. This carbocation reacts with the epoxy group of the epoxy resin one after another to cure the epoxy resin adhesive. However, the reaction between the carbocation and the epoxy group is unlikely to occur at room temperature, so the reaction between the carbocation and the epoxy group is accelerated by irradiating light with strong illuminance for a long time or by heating in an oven after UV irradiation. Or it needed to be completed.
強い照度の紫外線を照射すると、光カチオン硬化型エポキシ樹脂系接着剤の硬化は進行するものの、紫外線の一部が熱に変り、ヨウ素で染色したポリビニルアルコールフィルム(偏光子フィルム)からヨウ素の昇華や偏析による色抜けが起こったり、あるいは偏光子フィルムや保護フィルム又は光学補償フィルムが変形したりして、品質が劣化する。 When irradiating with strong UV light, curing of the photo-cation curable epoxy resin adhesive proceeds, but part of the UV light changes to heat, and iodine is sublimated from the polyvinyl alcohol film (polarizer film) stained with iodine. Color loss due to segregation occurs, or the polarizer film, the protective film, or the optical compensation film is deformed, and the quality deteriorates.
また、紫外線照射後にオーブン等で加熱する場合には、加熱オーブン等の加熱装置が必要となり、特にラインスピードが速い場合には、加熱オーブンが非常に長くなり、ランニングコストが上昇し、設備投資費用がかさんでくる。 In addition, when heating with an oven or the like after UV irradiation, a heating device such as a heating oven is required. Especially when the line speed is high, the heating oven becomes very long, the running cost increases, and the capital investment cost increases. Come in.
本発明の目的は、光カチオン硬化型エポキシ樹脂系接着剤を十分に硬化するために強い照度の紫外線を照射したり、紫外線照射後に加熱(アフターキュア)をしたりする必要がない、偏光子フィルムと保護フィルム及び/又は光学補償フィルムとを光カチオン硬化型エポキシ樹脂系接着剤を用いて接着するための装置を提供することである。 The object of the present invention is that there is no need to irradiate ultraviolet rays with strong illuminance in order to sufficiently cure the photocationic curable epoxy resin adhesive, and it is not necessary to heat (after cure) after the ultraviolet irradiation. It is to provide an apparatus for bonding a protective film and / or an optical compensation film with a photocationic curable epoxy resin adhesive.
本発明者等は、上述した課題を解決すべく鋭意検討したところ、紫外光を照射する前に光カチオン硬化型エポキシ樹脂系接着剤を特定の温度に加温することができる装置を使用することにより前記課題を達成できることを見出し、これらの知見に基づいて本発明を完成するに至った。 As a result of diligent studies to solve the above-mentioned problems, the present inventors use an apparatus that can heat a photocationically curable epoxy resin adhesive to a specific temperature before irradiation with ultraviolet light. Thus, the inventors have found that the above-mentioned problems can be achieved, and have completed the present invention based on these findings.
本発明によれば、以下の1〜7の発明が提供される。
(1) 偏光子フィルムと保護フィルム及び/又は光学補償フィルムとをこれらのフィルム間に光カチオン硬化型エポキシ樹脂系接着剤を介在させて接着するための装置であって、前記フィルム間に存在する光カチオン硬化型エポキシ樹脂系接着剤を40℃以上かつ前記フィルムの耐熱温度以下の温度に加温するための加温ランプ及び光カチオン硬化型エポキシ樹脂系接着剤を硬化して前記フィルムを接着するための紫外線ランプが設置され、かつ、前記紫外線ランプによる紫外線照射の前に、前記加温ランプにより前記接着剤を加温できるように前記加温ランプが設置されていることを特徴とするフィルム接着装置。
(2) 前記加温ランプが近赤外ハロゲンランプである、(1)のフィルム接着装置。
(3) 前記加温ランプが遠赤外ヒーターである、(1)のフィルム接着装置。
(4) 前記接着剤の加温温度が40〜120℃である、(1)又は(2)もしくは(3)に記載のフィルム接着装置。
(5) 400nm以下の短波長の光の少なくとも一部をカットするための光学フィルタが紫外線ランプと接着すべき前記フィルムとの間にさらに設置された、(1)〜(4)のいずれかのフィルム接着装置。
(6)前記紫外線ランプによる紫外線照射の後にも、前記加温ランプにより前記接着剤を加温できるように前記加温ランプが設置された、(1)〜(5)のいずれかのフィルム接着装置。
(7) 偏光子フィルムと保護フィルム及び/又は光学補償フィルムと、これらのフィルム間に介在する光カチオン硬化型エポキシ樹脂系接着剤の層とから構成される偏光板を製造するための装置であって、(1)〜(6)のいずれかのフィルム接着装置を含むことを特徴とする偏光板製造装置。
According to the present invention, the following inventions 1 to 7 are provided.
(1) An apparatus for adhering a polarizer film and a protective film and / or an optical compensation film with a photocationically curable epoxy resin adhesive interposed between these films, which exists between the films A heating lamp for heating the photocationic curable epoxy resin adhesive to a temperature not lower than 40 ° C. and not higher than the heat resistance temperature of the film and a photocationic curable epoxy resin adhesive are cured to adhere the film. And a heating lamp is installed so that the adhesive can be heated by the heating lamp before the ultraviolet irradiation by the ultraviolet lamp. apparatus.
(2) The film bonding apparatus according to (1), wherein the heating lamp is a near-infrared halogen lamp.
(3) The film bonding apparatus according to (1), wherein the heating lamp is a far infrared heater.
(4) The film bonding apparatus according to (1), (2), or (3), wherein a heating temperature of the adhesive is 40 to 120 ° C.
(5) Any one of (1) to (4), wherein an optical filter for cutting at least part of light having a short wavelength of 400 nm or less is further installed between the ultraviolet lamp and the film to be bonded . Film bonding device.
(6) The film bonding apparatus according to any one of (1) to (5), wherein the heating lamp is installed so that the adhesive can be heated by the heating lamp even after ultraviolet irradiation by the ultraviolet lamp. .
(7) An apparatus for producing a polarizing plate comprising a polarizer film, a protective film and / or an optical compensation film, and a layer of a photocationically curable epoxy resin adhesive interposed between these films. And the polarizing plate manufacturing apparatus characterized by including the film bonding apparatus in any one of (1)- (6) .
本発明の接着装置によれば、光カチオン硬化型エポキシ樹脂系接着剤を十分に硬化させるために強い照度の紫外線を照射したり、あるいは、紫外線照射後に加熱(アフターキュア)をしたりする必要がないので、品質が良好な偏光板を簡便かつ効率的に製造できる。 According to the bonding apparatus of the present invention, it is necessary to irradiate ultraviolet rays with strong illuminance in order to sufficiently cure the photocationic curable epoxy resin adhesive, or to heat (aftercure) after the ultraviolet irradiation. Therefore, it is possible to easily and efficiently produce a polarizing plate with good quality.
以下に本発明を詳細に説明する。
本発明は、偏光子フィルムと保護フィルム及び/又は光学補償フィルムとをこれらのフィルム間に光カチオン硬化型エポキシ樹脂系接着剤を介在させて接着するための装置であって、前記フィルム間に存在する光カチオン硬化型エポキシ樹脂系接着剤を40℃以上かつ前記フィルムの耐熱温度以下の温度に加温するための加温ランプ及び光カチオン硬化型エポキシ樹脂系接着剤を硬化して前記フィルムを接着するための紫外線ランプを設置したフィルム接着装置であり、該装置は、加温ランプと紫外線ランプを両方備えていることを特徴とする。
The present invention is described in detail below.
The present invention is an apparatus for adhering a polarizer film and a protective film and / or an optical compensation film with a photocationically curable epoxy resin adhesive interposed between these films, and is present between the films. A heating lamp for heating the photocationic curable epoxy resin adhesive to a temperature of 40 ° C. or more and the heat resistant temperature of the film or less, and curing the photocationic curable epoxy resin adhesive to bond the film A film bonding apparatus provided with an ultraviolet lamp for performing the above-described process, and the apparatus includes both a heating lamp and an ultraviolet lamp.
本発明における加温ランプは、フィルム間に塗布された光カチオン硬化型エポキシ樹脂系接着剤を40℃以上に加温するためのものであり、塗布された光カチオン硬化型エポキシ樹脂系接着剤を40℃以上に加温できることが必要である。加温ランプとして、例えば、近赤外ハロゲンランプ及び遠赤外ヒーターが挙げられる。上記加温源の特徴としては、急速に温度を上昇させることができ、高速で流れる接着部材の加熱に対してきわめて有効であることである。加温温度の上限は、被着体フィルムの耐熱性に依存するので一概に限定できないが、例えば120℃である。ここで、フィルムの耐熱温度は、フィルムを60秒間、ある温度下に置いたときに、加熱前と比べ、実質的に、フィルムの変形(反り、変形)がなくかつフィルムの光学的特性(透過率、偏光度)が劣化しない温度のうち最高の温度をいう。接着剤の加温温度が40℃以下では、光照射による光カチオン硬化型エポキシ樹脂の硬化が十分ではなく、本発明の効果を達成できない。接着剤の加温温度は、好ましくは50〜100℃、より好ましくは60〜80℃である。 The heating lamp in the present invention is for heating the photocationic curable epoxy resin adhesive applied between the films to 40 ° C. or more, and the applied photocationic curable epoxy resin adhesive. It must be possible to heat to 40 ° C or higher. Examples of the heating lamp include a near infrared halogen lamp and a far infrared heater. As a feature of the heating source, the temperature can be rapidly increased and it is extremely effective for heating the adhesive member flowing at high speed. The upper limit of the heating temperature depends on the heat resistance of the adherend film and thus cannot be generally limited, but is 120 ° C., for example. Here, the heat-resistant temperature of the film is that when the film is placed at a certain temperature for 60 seconds, there is substantially no deformation (warping or deformation) of the film and optical characteristics (transmission) of the film. The highest temperature among the temperatures at which the rate and polarization degree do not deteriorate. When the heating temperature of the adhesive is 40 ° C. or lower, the photocation curable epoxy resin is not sufficiently cured by light irradiation, and the effects of the present invention cannot be achieved. The heating temperature of the adhesive is preferably 50 to 100 ° C, more preferably 60 to 80 ° C.
加温ランプは、接着剤を所定の温度に加温できれば、1つでも2つ以上を用いてもよく、また、被着体フィルムの一方の片面、他方の片面又は両面を加温できるように配置してもよい。 As long as the heating lamp can heat the adhesive to a predetermined temperature, one or two or more may be used, and one side, the other side or both sides of the adherend film can be heated. You may arrange.
本発明における近赤外線ハロゲンランプとしては、従来から知られているものを用いることができ、また反射板を備え照射器を構成するもの(集光型照射器、平行光照射器)を用いてもよい。さらに、ハロゲンランプを多灯並べて配置してもよい。 As the near-infrared halogen lamp in the present invention, a conventionally known lamp can be used, and a lamp (condensing irradiator, parallel light irradiator) that includes a reflector and constitutes an irradiator can be used. Good. Further, multiple halogen lamps may be arranged side by side.
本発明において、加温ランプは、紫外線ランプによる紫外線照射の前に、加温ランプにより接着剤を加温できるように設置してもよいし、あるいは、紫外線ランプによる紫外線照射の前と後にそれぞれ、加温ランプにより接着剤を加温できるように設置してもよい。 In the present invention, the heating lamp may be installed so that the adhesive can be heated by the heating lamp before the ultraviolet irradiation by the ultraviolet lamp, or before and after the ultraviolet irradiation by the ultraviolet lamp, respectively. You may install so that an adhesive agent can be heated with a heating lamp.
本発明における遠赤外ヒーターとしては、タングステン、カーボン等を発熱体とし遠赤外線を放射する、従来から知られているものを用いることができる。 As the far-infrared heater in the present invention, a conventionally known heater that emits far-infrared rays using tungsten, carbon or the like as a heating element can be used.
本発明における紫外線ランプは、フィルム間に塗布された、40℃以上に加温された光カチオン硬化型エポキシ樹脂系接着剤を硬化し、フィルムを接着するためのものである。紫外線ランプとしては、高圧水銀ランプ、低圧水銀ランプ、メタルハライドランプ、ハイパワーメタルハライドランプ、ガリウムランプ、キセノンランプ、キセノンフラッシュランプ、エキシマランプ、紫外線LED、無電極ランプ等が挙げられる。 The ultraviolet lamp in the present invention is for curing a photocationically curable epoxy resin adhesive applied between the films and heated to 40 ° C. or more to bond the films. Examples of the ultraviolet lamp include a high pressure mercury lamp, a low pressure mercury lamp, a metal halide lamp, a high power metal halide lamp, a gallium lamp, a xenon lamp, a xenon flash lamp, an excimer lamp, an ultraviolet LED, and an electrodeless lamp.
本発明の装置は、好ましくは、紫外線ランプと被着体フィルムの間に位置する400nm以下、特に390nm以下の波長の光の少なくとも一部、好ましくは全部をカットする光学フィルタを含む。かかる光学フィルタとしては、石英ガラス、熱線カットフィルタ(IRCF)、310nm以下カットフィルタ、320nm以下カットフィルタ、340nm以下カットフィルタ、390nm以下カットフィルタ、ソーダライムガラス、400〜450nmバンドパスフィルタ等が挙げられる。これらの光学フィルタにより、400nm以下、特に390nm以下の波長の光によるフィルムの変形や偏光子フィルムからのヨウ素抜けを抑制できる。 The apparatus of the present invention preferably includes an optical filter that is located between the ultraviolet lamp and the adherend film and cuts at least part, preferably all, of light having a wavelength of 400 nm or less, particularly 390 nm or less. Examples of such optical filters include quartz glass, heat ray cut filter (IRCF), 310 nm or less cut filter, 320 nm or less cut filter, 340 nm or less cut filter, 390 nm or less cut filter, soda lime glass, 400 to 450 nm band pass filter, and the like. . These optical filters can suppress deformation of the film and iodine loss from the polarizer film caused by light having a wavelength of 400 nm or less, particularly 390 nm or less.
本発明の装置による紫外光の照射は、光カチオン硬化型エポキシ樹脂系接着剤の温度が40℃以上に到達しているときに行う。紫外光の照射強度は、目的とする接着剤や樹脂フィルムによって異なり、限定されないが、光重合開始剤の活性化に有効な波長領域の照射強度が好ましくは10〜1000mW/cm2、より好ましくは50〜300mW/cm2である。光の照射時間は、使用する光硬化性エポキシ樹脂の種類やフィルムの材質によって異なり、限定されないが、照射強度と照射時間との積として表される積算光量が100〜3000mJ/cm2(波長405nm)、好ましくは700〜2000mJ/cm2(波長405nm)となるようにする。 Irradiation of ultraviolet light by the apparatus of the present invention is performed when the temperature of the photocationically curable epoxy resin adhesive reaches 40 ° C. or higher. The irradiation intensity of ultraviolet light varies depending on the target adhesive or resin film, and is not limited, but the irradiation intensity in the wavelength region effective for activating the photopolymerization initiator is preferably 10 to 1000 mW / cm 2 , more preferably 50-300 mW / cm 2 . The light irradiation time varies depending on the type of the photocurable epoxy resin used and the material of the film, and is not limited. However, the integrated light amount expressed as the product of the irradiation intensity and the irradiation time is 100 to 3000 mJ / cm 2 (wavelength 405 nm). ), Preferably 700 to 2000 mJ / cm 2 (wavelength 405 nm).
紫外線ランプは、接着剤を硬化できれば、1つでも2つ以上を用いてもよく、また、被着体フィルムの一方の片面、他方の片面又は両面を照射できるように配置してもよい。 As long as an adhesive agent can be hardened | cured, you may use 1 or 2 or more ultraviolet lamps, and you may arrange | position so that one side of an adherend film, the other side, or both sides can be irradiated.
本発明のフィルム接着装置で使用できる偏光子フィルムは、公知の偏光子フィルムであり、例えば、一軸延伸されたポリビニルアルコール系樹脂にヨウ素又は二色性色素が吸着配向されたフィルムが挙げられる。 The polarizer film that can be used in the film bonding apparatus of the present invention is a known polarizer film, and examples thereof include a film in which iodine or a dichroic dye is adsorbed and oriented on a uniaxially stretched polyvinyl alcohol resin.
本発明の接着装置で使用できる保護フィルムは、公知の保護フィルムであり、例えば、非晶性ポリオレフィン系樹脂フィルム、ポリエステル系樹脂フィルム、アクリル系樹脂フィルム、ポリカーボネート系樹脂フィルム、ポリサルホン系樹脂フィルム、脂環式ポリイミド系樹脂フィルムなどの透湿度の低い樹脂フィルム等が挙げられる。これらのほか、トリアセチルセルロースフィルムやジアセチルセルロースフィルムなどのセルロースアセテート系樹脂のような透湿度の比較的高い樹脂フィルム等が挙げられる。偏光子の両面に保護フィルムを接着する場合、両者は、同じ種類のものであってもよいし、異なる種類のものであってもよい。 The protective film that can be used in the bonding apparatus of the present invention is a known protective film, for example, an amorphous polyolefin resin film, a polyester resin film, an acrylic resin film, a polycarbonate resin film, a polysulfone resin film, an oil Examples thereof include a resin film having a low moisture permeability such as a cyclic polyimide resin film. In addition to these, a resin film having a relatively high moisture permeability such as a cellulose acetate-based resin such as a triacetyl cellulose film or a diacetyl cellulose film may be used. When bonding a protective film on both surfaces of a polarizer, both may be the same type or different types.
非晶性ポリオレフィン系樹脂は、通常、ノルボルネンや多環ノルボルネン系モノマーのような環状ポリオレフィンの重合単位を有するものであり、環状オレフィンと鎖状環状オレフィンとの共重合体であってもよい。市販されている非結晶性ポリオレフィン系樹脂として、JSR(株)の商品名アートン、日本ゼオン(株)のZEONEX、ZEONOR、三井化学(株)のAPO、アペルなどがある。 The amorphous polyolefin-based resin usually has a polymerization unit of a cyclic polyolefin such as norbornene or a polycyclic norbornene-based monomer, and may be a copolymer of a cyclic olefin and a chain cyclic olefin. Examples of commercially available non-crystalline polyolefin resins include JSR Corporation's trade name Arton, Nippon Zeon Corporation's ZEONEX, ZEONOR, Mitsui Chemicals, Inc. APO, and Appel.
本発明の接着装置で使用できる光学補償フィルムは、公知の光学補償フィルムである。
複屈折性を有する光学補償フィルム材料は、例えばポリカーボネート、ポリビニルアルコール、ポリスチレン、ポリメタクリレート、ポリプロピレンのようなポリオレフィン、ポリアリレート、ポリアミドなどが挙げられる。またノルボルネンや多環ノルボルネン系モノマーのような環状ポリオレフィンの重合単位を有するもの、あるいは環状オレフィンと鎖状環状オレフィンでもよい。これらの延伸フィルムであり、一軸や二軸等の適宜な方式で処理したものである。また広帯域化など光学特性の制御を目的とした2枚以上の組み合わせでも良い。
The optical compensation film that can be used in the bonding apparatus of the present invention is a known optical compensation film.
Examples of the optical compensation film material having birefringence include polycarbonate, polyvinyl alcohol, polystyrene, polymethacrylate, polyolefins such as polypropylene, polyarylate, polyamide and the like. Moreover, what has the polymerization unit of cyclic polyolefin like norbornene and a polycyclic norbornene-type monomer, or a cyclic olefin and a chain cyclic olefin may be sufficient. These stretched films are processed by an appropriate method such as uniaxial or biaxial. Also, a combination of two or more sheets for the purpose of controlling optical characteristics such as a broad band may be used.
本発明の接着装置で使用できる光カチオン硬化型エポキシ樹脂系接着剤は、光カチオン硬化型エポキシ樹脂と光重合開始剤、もしくはこれらに増感剤を加えたものなどを含むが、その他に慣用の添加成分を含んでもよい。 Photocationic curable epoxy resin adhesives that can be used in the bonding apparatus of the present invention include a photocationic curable epoxy resin and a photopolymerization initiator, or those obtained by adding a sensitizer to them. An additive component may be included.
光カチオン硬化型エポキシ樹脂は、一般に使用される光カチオン硬化型エポキシ樹脂であれば特に限定されず、例えば、芳香族エポキシ樹脂、脂肪族エポキシ樹脂、脂環式エポキシ樹脂等が含まれる。 The photo cation curable epoxy resin is not particularly limited as long as it is a generally used photo cation curable epoxy resin, and includes, for example, an aromatic epoxy resin, an aliphatic epoxy resin, an alicyclic epoxy resin, and the like.
本発明において使用できる光カチオン硬化型エポキシ樹脂として、上記したエポキシ樹脂を単独で用いてもよいし、複数種のエポキシ樹脂を任意の配合割合で混合して用いてもよい。 As the photocationically curable epoxy resin that can be used in the present invention, the above-described epoxy resin may be used alone, or a plurality of types of epoxy resins may be mixed and used in an arbitrary blending ratio.
本発明において使用できる光重合開始剤は、紫外線の照射によって、カチオンを発生し、エポキシ基の重合を開始するものであれば、特に限定されない。光重合開始剤の例として、スルホニウム塩、ヨウドニウム塩、ジアゾニウム塩が挙げられる。 The photopolymerization initiator that can be used in the present invention is not particularly limited as long as it generates a cation by the irradiation of ultraviolet rays and starts polymerization of an epoxy group. Examples of the photopolymerization initiator include sulfonium salts, iodonium salts, and diazonium salts.
光重合開始剤の市販品として、旭電化工業(株)製のアデカオプトマーSP−150及びSP−170、ロディア(株)製のPI2074、日本化薬(株)のカヤラッドPCI−220等が挙げられる。 As commercial products of the photopolymerization initiator, Adeka optomer SP-150 and SP-170 manufactured by Asahi Denka Kogyo Co., Ltd., PI 2074 manufactured by Rhodia Co., Ltd., Kayrad PCI-220 manufactured by Nippon Kayaku Co., Ltd., and the like are listed. It is done.
これらの光重合開始剤は、光カチオン硬化型エポキシ樹脂100質量部に対して、0.5〜20質量部、好ましくは1〜10質量部を使用する。光重合開始剤は、それぞれ単独で使用しても、又は二種以上を使用してもよい。 These photopolymerization initiators are used in an amount of 0.5 to 20 parts by mass, preferably 1 to 10 parts by mass with respect to 100 parts by mass of the cationic photocurable epoxy resin. A photoinitiator may be used individually, respectively, or may use 2 or more types.
本発明において使用できる光カチオン硬化型エポキシ樹脂系接着剤は、必要によりオキセタン化合物を含むことができる。本発明において使用できるオキセタン化合物は、光カチオン硬化型エポキシ樹脂100質量部に対して、50質量部以下の量で使用する。オキセタン化合物は、それぞれ単独で使用しても、又は二種以上を使用してもよい。 The photocationically curable epoxy resin adhesive that can be used in the present invention can contain an oxetane compound, if necessary. The oxetane compound that can be used in the present invention is used in an amount of 50 parts by mass or less based on 100 parts by mass of the photocationically curable epoxy resin. The oxetane compounds may be used alone or in combination of two or more.
本発明において使用できる光カチオン硬化型エポキシ樹脂系接着剤は、更に、必要に応じて光増感剤を併用することができる。光増感剤を使用することで、反応性が向上し、硬化物の機械強度や接着強度を向上させることができる。光増感剤としては、カルボニル化合物、有機硫黄化合物、過硫化物、レドックス系化合物、アゾ及びジアゾ化合物、ハロゲン化合物、光還元性色素などが挙げられる。これらの光増感剤は、単独で使用しても、又は二種以上を使用してもよい。光増感剤の市販品には、例えばカヤキュアDETX−S(日本化薬(株)製)などが挙げられる。光増感剤の量は、光カチオン硬化型エポキシ樹脂系接着剤100質量部に対して、0.01〜20質量部、好ましくは0.1〜5質量部である。 The photocationically curable epoxy resin adhesive that can be used in the present invention can be used in combination with a photosensitizer if necessary. By using a photosensitizer, the reactivity is improved, and the mechanical strength and adhesive strength of the cured product can be improved. Examples of the photosensitizer include carbonyl compounds, organic sulfur compounds, persulfides, redox compounds, azo and diazo compounds, halogen compounds, and photoreductive dyes. These photosensitizers may be used alone or in combination of two or more. Examples of commercially available photosensitizers include Kayacure DETX-S (manufactured by Nippon Kayaku Co., Ltd.). The quantity of a photosensitizer is 0.01-20 mass parts with respect to 100 mass parts of photocation curable epoxy resin adhesives, Preferably it is 0.1-5 mass parts.
本発明において使用できる光カチオン硬化型エポキシ樹脂系接着剤には、更に、本発明の効果を損なわない限り、上記以外の添加剤、例えばフィラー、酸化防止剤、シランカップリング剤を配合することできる。 The photocation curable epoxy resin adhesive that can be used in the present invention may further contain additives other than the above, for example, fillers, antioxidants, and silane coupling agents, as long as the effects of the present invention are not impaired. .
フィラーの例として、タルク、シリカ、マイカ等の無機フィラーや、ポリプロピレン、ポリエチレン等の樹脂フィラーが挙げられる。 Examples of the filler include inorganic fillers such as talc, silica and mica, and resin fillers such as polypropylene and polyethylene.
本発明において使用できる光カチオン硬化型エポキシ樹脂系接着剤は、好ましくは、粘度が200mPa・s以下(25℃)、さらに好ましくは150mPa・s以下(25℃)である。粘度が低い程、塗布が行い易く、また接着剤層の塗布厚みが薄くでき、例えば偏光板に保護フィルムまたは光学補償フィルムを貼り付けるのに使用した場合には、偏光板の外観も良好なものになる。高粘度の接着剤も使用できるが、その場合には塗布量を少なくする。 The photocationically curable epoxy resin adhesive that can be used in the present invention preferably has a viscosity of 200 mPa · s or less (25 ° C.), more preferably 150 mPa · s or less (25 ° C.). The lower the viscosity, the easier it is to apply, and the thinner the adhesive layer can be applied. For example, when used to attach a protective film or optical compensation film to a polarizing plate, the polarizing plate has a good appearance. become. High-viscosity adhesives can also be used, but in that case the coating amount is reduced.
本発明において、偏光子フィルム又は保護フィルム若しくは光学補償フィルムへの光カチオン硬化型エポキシ樹脂系接着剤の塗工方法は、特に限定されず、例えば、ドクターブレード、ワイヤーバー、ダイコーター、カンマコーター、グラビアコーターなどを用いた方法を含む。また、本発明におけるフィルムのラミネートは、金属ロール、ゴムロールを等を用いて行うことができ、その際のラミネート圧力は、0〜5Mpaであり得る。 In the present invention, the method of applying the photocationically curable epoxy resin adhesive to the polarizer film, the protective film, or the optical compensation film is not particularly limited. For example, a doctor blade, a wire bar, a die coater, a comma coater, Including methods using gravure coaters. The film lamination in the present invention can be performed using a metal roll, a rubber roll, or the like, and the laminating pressure at that time can be 0 to 5 MPa.
本発明の装置で製造できる接着フィルムは、2層、3層又はそれ以上のフィルムからなる積層構造を有し得る。 The adhesive film that can be produced by the apparatus of the present invention may have a laminated structure composed of two, three or more films.
本発明においては、フィルムとして、フィルムの貼り合わせ面にコロナ処理、プラズマ処理、エキシマ処理、UV処理などを施したものを使用してもよい。 In the present invention, a film obtained by subjecting the bonding surface of the film to corona treatment, plasma treatment, excimer treatment, UV treatment, or the like may be used.
本発明は、前記したフィルム接着装置を組み込んだ偏光板製造装置も包含する。本発明の偏光板製造装置は、偏光子フィルムと保護フィルム及び/又は光学補償フィルムとを接着剤介してラミネートする装置及び前記したフィルム接着装置を含む。ラミネート装置は、偏光子フィルムと保護フィルム及び/又は光学補償フィルムのいずれかに接着剤を塗布する手段、各フィルムをラミネートする手段、及びフィルムを搬送する手段(コンベヤー、ローラ等)を含み得、水のりを使用する従来の偏光板製造装置におけるラミネート装置を使用できる。フィルム接着装置は、前述の通り、加温ランプ及び紫外線ランプを含み、さらに、フィルムを搬送する手段(コンベヤー、ローラ等)を含み得る。本発明においては、アフターキュアのための加熱オーブンは不要であるが、これを設けても良い。 The present invention also includes a polarizing plate manufacturing apparatus incorporating the above-described film bonding apparatus. The polarizing plate manufacturing apparatus of the present invention includes an apparatus for laminating a polarizer film and a protective film and / or an optical compensation film via an adhesive, and the above-described film bonding apparatus. The laminating apparatus may include means for applying an adhesive to either the polarizer film and the protective film and / or the optical compensation film, means for laminating each film, and means for conveying the film (conveyor, roller, etc.) The laminating apparatus in the conventional polarizing plate manufacturing apparatus using a water paste can be used. As described above, the film bonding apparatus includes a heating lamp and an ultraviolet lamp, and may further include means for conveying the film (conveyor, roller, etc.). In the present invention, a heating oven for after-curing is unnecessary, but it may be provided.
本発明の装置を図面を用いて説明する。 The apparatus of the present invention will be described with reference to the drawings.
図1は、本発明のフィルム接着装置の一例を示す。フィルム接着装置1は、加温ランプ2及び紫外線ランプ3を有し、さらにフィルム搬送のためのコンベア4も有している。コンベア13上を左から右に進行する、偏光子フィルムと保護フィルム及び/又は光学補償フィルムとを接着剤を介して貼り合わせた被着体フィルム5が加温ランプ2により40℃以上に加温される。加温ランプ2は、図1では、コンベア4の上方に2個配置してあるが、接着剤を所定の温度に加温できれば、1個でも2個以上を用いてもよく、また、コンベア4の上方、下方又はその両方に配置してもよい。40℃以上に加温された被着体フィルム5は、紫外線ランプ3により紫外線を照射され、完全に硬化しフィルム間を接着する。紫外線ランプ3は、図1では、コンベア4の上方に1個配置してあるが、接着剤の硬化を完結できれば、1個でも2個以上を用いてもよく、また、コンベア4の上方、下方又はその両方に配置してもよい。紫外線ランプ3はコールドミラー6を有するのが好ましい。フィルム接着装置1は、390nm以下の波長の光をカットする光学フィルタ7を紫外線ランプ3と被着体フィルム5の間に配置してもよい。 FIG. 1 shows an example of the film bonding apparatus of the present invention. The film bonding apparatus 1 includes a heating lamp 2 and an ultraviolet lamp 3, and further includes a conveyor 4 for film conveyance. The adherend film 5, which proceeds from the left to the right on the conveyor 13 and is bonded with a polarizer film and a protective film and / or an optical compensation film, is heated to 40 ° C. or more by the heating lamp 2. Is done. In FIG. 1, two heating lamps 2 are arranged above the conveyor 4, but one or two or more may be used as long as the adhesive can be heated to a predetermined temperature. It may be arranged above, below, or both. The adherend film 5 heated to 40 ° C. or higher is irradiated with ultraviolet rays from the ultraviolet lamp 3, and is completely cured to bond the films. In FIG. 1, one ultraviolet lamp 3 is arranged above the conveyor 4, but one or two or more may be used as long as the curing of the adhesive can be completed. Or you may arrange | position to both. The ultraviolet lamp 3 preferably has a cold mirror 6. In the film bonding apparatus 1, an optical filter 7 that cuts light having a wavelength of 390 nm or less may be disposed between the ultraviolet lamp 3 and the adherend film 5.
図2は、本発明の偏光板製造装置の一例を示し、この装置の一部に本発明のフィルム接着装置1が配置されている。偏光子フィルム10と保護フィルム11及び光学補償フィルム12とを接着剤を介して貼り合わせて被着体フィルム5を製造し、これをフィルム接着装置1中の加温ランプ2により接着剤を40℃以上に加温し、加温した接着剤をフィルム接着装置1中の紫外線ランプ3からの紫外線照射により完全に硬化させて偏光板を得る。この装置は、接着剤のアフターキュアが不要となるため、加熱オーブンを必要としない。なお、被着体フィルム5と紫外線ランプ3の間には、390nm以下の波長の光の少なくとも一部をカットする光学フィルタ7が配置されている。 FIG. 2 shows an example of the polarizing plate production apparatus of the present invention, and the film bonding apparatus 1 of the present invention is arranged in a part of this apparatus. The adherend film 5 is manufactured by laminating the polarizer film 10, the protective film 11, and the optical compensation film 12 via an adhesive, and the adhesive is applied at 40 ° C. by the heating lamp 2 in the film bonding apparatus 1. The polarizing plate is obtained by heating as described above and completely curing the heated adhesive by ultraviolet irradiation from the ultraviolet lamp 3 in the film bonding apparatus 1. This apparatus does not require an after-curing of the adhesive and therefore does not require a heating oven. An optical filter 7 that cuts at least part of light with a wavelength of 390 nm or less is disposed between the adherend film 5 and the ultraviolet lamp 3.
以下に、本発明を実施例により示すが、本発明はこれらの実施例によって限定されるものではない。 Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.
調製例 光カチオン硬化型エポキシ樹脂系接着剤の調製
表1記載の原材料をポリエチレン製容器に計量して加え、攪拌機で混合・攪拌して均一な光カチオン硬化型エポキシ樹脂系接着剤A〜C(粘度:150mPa/s(25℃))を得た。
100MF:トリメチロールプロパントリグリシジルエーテル、共栄社化学(株)
エピクロンEXA−850S:4,4′−ジグリシジルオキシ−2,2′−ジフェニルプロパン、大日本インキ化学(株)
エピクロンN740:フェノールノボラック型エポキシオリゴマー、大日本インキ化学(株)
CEL2000:1,2−エポキシ−4−ビニルシクロヘキサン、ダイセル化学工業(株)
CEL3000:1,2:8,9ジエポキシリモネン、ダイセル化学工業(株)
CEL2021P:3,4−エポキシシクロヘキセニルメチル−3′,4′−エポキシシクロヘキセンカルボキシレート、ダイセル化学工業(株)
KBM403:3−グリシドキシプロピルトリメトキシシラン、信越化学工業(株)
CPI101A:4−ジフェニルスルホニオジフェニルスルフィド ヘキサフルオロアンチモネート、サンアプロ(株)
DBA:1,9−ジブトキシアントラセン、川崎化成工業(株)
Preparation Example Preparation of Photocationic Curable Epoxy Resin Adhesive Weighing the raw materials listed in Table 1 into a polyethylene container, mixing and stirring with a stirrer, uniform photocationic curable epoxy resin adhesives A to C ( Viscosity: 150 mPa / s (25 ° C.)) was obtained.
100MF: Trimethylolpropane triglycidyl ether, Kyoeisha Chemical Co., Ltd.
Epicron EXA-850S: 4,4'-diglycidyloxy-2,2'-diphenylpropane, Dainippon Ink & Chemicals, Inc.
Epicron N740: Phenol novolac type epoxy oligomer, Dainippon Ink and Chemicals, Inc.
CEL2000: 1,2-epoxy-4-vinylcyclohexane, Daicel Chemical Industries, Ltd.
CEL3000: 1, 2: 8,9 diepoxy limonene, Daicel Chemical Industries, Ltd.
CEL2021P: 3,4-epoxycyclohexenylmethyl-3 ′, 4′-epoxycyclohexenecarboxylate, Daicel Chemical Industries, Ltd.
KBM403: 3-glycidoxypropyltrimethoxysilane, Shin-Etsu Chemical Co., Ltd.
CPI101A: 4-diphenylsulfoniodiphenyl sulfide hexafluoroantimonate, San Apro Co., Ltd.
DBA: 1,9-dibutoxyanthracene, Kawasaki Chemical Industry Co., Ltd.
実施例 接着装置
以下の偏光板の製造例に用いた接着装置は図1に示されるものであり、次に記載の仕様を備えていた。
第1の赤外線(加温)ランプ:集光照射器若しくは平行光照射器を搭載したハロゲンランプ
第2の赤外線(加温)ランプ:集光照射器若しくは平行光照射器を搭載したハロゲンランプ
第1及び第2の赤外線ランプの中心間距離:60〜70mm
赤外線ランプと被着体の距離:25〜50mm
紫外線ランプ:メタルハライドランプ
紫外線ランプと被着体の距離:100〜300mm
第2の赤外線ランプと紫外線ランプの中心間距離:200mm
光学フィルタ:無し、熱線カットフィルタ、320nm以下カットフィルタ、340nm以下カットフィルタ、370nm以下カットフィルタ又は390nm以下カットフィルタ
コンベア速度:0.1〜25m/min
Example Adhesive Device The adhesive device used in the following polarizing plate production example is shown in FIG. 1 and had the following specifications.
First infrared (warming) lamp: halogen lamp equipped with condensing irradiator or parallel light irradiator Second infrared (warming) lamp: halogen lamp equipped with condensing irradiator or parallel light irradiator And the distance between the centers of the second infrared lamps: 60 to 70 mm
Distance between infrared lamp and adherend: 25 to 50 mm
UV lamp: metal halide lamp Distance between UV lamp and adherend: 100 to 300 mm
Center distance between the second infrared lamp and the ultraviolet lamp: 200 mm
Optical filter: None, heat ray cut filter, 320 nm or less cut filter, 340 nm or less cut filter, 370 nm or less cut filter or 390 nm or less cut filter
Conveyor speed: 0.1 to 25 m / min
製造例1〜6及び比較製造例1〜3 偏光板の製造
一軸延伸し、ヨウ素で染色したポリビニルアルコール偏光子フィルムの片面にトリアセチルセルロースフィルムを、他の片面に非結晶性ポリオレフィン系樹脂フィルム(日本ゼオン(株)製のゼオノアフィルム)を調製例で調製した光硬化性エポキシ樹脂系接着剤Aを介して貼り合わせて、3層構造のフィルムを得た。得られた3層構造のフィルムを、第1及び第2の赤外線ランプを用いて、室温(25℃)、30℃、40℃、50℃、60℃、70℃、80℃、100℃、120℃及び140℃に加温した後、直ちにメタルハライドランプ(アイグラフィックス社製)を用いて、照射強度200mW/cm2(405nm)、積算光量1000mJ/cm2(405nm)、搬送速度1.5m/minで光の照射を行って偏光板を得た。なお、光学フィルタは使用しなかった。偏光板フィルム間の接着剤層は、1〜3μm程度の厚みであった。この値は、電子顕微鏡により確認した。
表2に、材料温度、UV照射後の接着剤の状態、UV照射後の偏光板フィルムの変形、偏光板の耐久特性、耐湿試験後の光学特性を示す。
材料温度:UV照射直前の接着剤の温度(加温温度)
UV照射後の接着剤の状態:
以下の基準で評価した。
液状で硬化不十分:液体状態で硬化が不十分であり、接着していない
剥がれ:フィルムが剥がれている
△:接着しているが強度はやや弱い(〜100g/25mm)
○:接着しており、強度も中程度(100〜200g/25mm)
◎:接着しており、強度も十分(200g/25mm〜)
UV照射後のフィルムの変形:肉眼で観察した。
耐湿試験後の耐久特性:
偏光板を60℃−90%の条件の耐湿試験槽に500時間放置した後の外観(色抜けやフィルム変性)を以下の基準で評価した。
×:はがれや変形、偏光子部分の色抜けが強く起きる。
△:はがれや変形、偏光子部分の色抜けが起きる。
○:偏光子部分の色抜けが極くわずかに起きるが、はがれや変形は起きない。
◎:はがれや変形、偏光子部分の色抜けが起きない。
耐湿試験後の光学特性:
耐湿試験前及び後の偏光板について、偏光度と透過率を測定し、それらの劣化(耐湿試験前の偏光板の値からの低下)で評価した。
※偏光板の変性(変形、耐久特性、光学特性)については熱のみならず、紫外線によっても劣化を生じた。
表2から、40〜70℃に加温したのち光照射して硬化すると、光硬化型エポキシ樹脂系接着剤が十分に硬化して良好な接着性を示すとともに、フィルムの変形もほとんどないことが分かる。一方、加温温度が25℃、30℃の場合には、フィルムの変形はないものの、光硬化型エポキシ樹脂系接着剤が硬化不十分もしくは未硬化で、接着性が極不良であった。また、硬化温度が80〜100℃以上の場合には、光硬化型エポキシ樹脂系接着剤が十分に硬化して良好な接着性を示すが、フィルムがわずかに反った。また100℃超の場合には、光硬化型エポキシ樹脂系接着剤が十分に硬化して良好な接着性を示すが、フィルムが大きく変性した。
光硬化性樹脂B及びCについて同様の検討を行い、接着性に多少の相違はあるものの、ほぼ同様の結果が得られた。
製造例7〜13及び比較製造例4〜6 偏光板の製造
製造例1〜6及び比較製造例1〜3の偏光板の製造において、メタルハライドランプと被着体フィルムの間に、波長390nm以下の光をカットする光学フィルタ(アイグラフィックス社製)を配置して接着装置を使用し、同様にして、それぞれ製造例7〜13及び比較製造例4〜6の偏光板を得た。
表3から、波長390nm以下の光をカットする光学フィルタをメタルハライドランプと被着体の間に配置すると、これを配置しない場合と比べ、偏光子およびフィルムの変性も少なく、良好な接着性と耐久特性をもつ偏光板が得られた。またこれらは390nm以下の波長カットフィルタに代えて、320nm以下の波長カットフィルタ、340nm以下の波長カットフィルタ又は370nm以下の波長カットフィルタを使用しても同様の結果が得られたが、390nm以下の波長カットフィルタの使用が最も構成フィルムへの影響が少なかった。光学フィルタの使用により、120℃に加温した場合のフィルムの変形は抑制できたが、140℃に加温した場合のフィルムの変形は抑制できなかった。
比較製造例7〜12 偏光板の製造
実施例1と同様にして、3層構造貼り合わせフィルムを得た。得られた3層構造のフィルムを、加温せずに、メタルハライドランプ(アイグラフィックス社製)を用いて、照射強度500mW/cm2(405nm)、積算光量、500、1000、2000及び3000mJ/cm2(405nm)で光の照射を行って偏光板を得た。さらに、積算光量2000及び3000mJ/cm2(405nm)の場合には、メタルハライドランプと被着体フィルムの間に配置した波長390nm以下の光をカットする光学フィルタ(アイグラフィックス社製)を用いて光照射を行い、偏光板を得た。
表4から、光照射前に加温をしない場合には、光の照射光量を増減しても、接着性に優れかつフィルムの変形のない偏光板を得ることはできなかった。
Production Examples 1 to 6 and Comparative Production Examples 1 to 3 Production of Polarizing Plate Triacetyl cellulose film on one side of a uniaxially stretched and dyed iodine film with a triacetyl cellulose film and an amorphous polyolefin resin film on the other side ( A ZEONOR film manufactured by Nippon Zeon Co., Ltd.) was bonded via the photo-curable epoxy resin adhesive A prepared in the preparation example to obtain a film having a three-layer structure. Using the first and second infrared lamps, the resulting three-layer film was obtained at room temperature (25 ° C.), 30 ° C., 40 ° C., 50 ° C., 60 ° C., 70 ° C., 80 ° C., 100 ° C., 120 ° C. Immediately after heating to 140 ° C. and 140 ° C., using a metal halide lamp (manufactured by Eye Graphics Co., Ltd.), an irradiation intensity of 200 mW / cm 2 (405 nm), an integrated light quantity of 1000 mJ / cm 2 (405 nm), a conveyance speed of 1.5 m / A polarizing plate was obtained by performing light irradiation at min. An optical filter was not used. The adhesive layer between the polarizing films had a thickness of about 1 to 3 μm. This value was confirmed by an electron microscope.
Table 2 shows the material temperature, the state of the adhesive after UV irradiation, the deformation of the polarizing film after UV irradiation, the durability characteristics of the polarizing film, and the optical characteristics after the moisture resistance test.
Material temperature: Adhesive temperature just before UV irradiation (heating temperature)
Adhesive state after UV irradiation:
Evaluation was made according to the following criteria.
Insufficient curing in liquid state: Insufficient curing in liquid state, not adhered Peeling: Film is peeled Δ: Although adhered, the strength is slightly weak (˜100 g / 25 mm)
○: Adhesive and moderate in strength (100 to 200 g / 25 mm)
◎: Adhesive and sufficient strength (200g / 25mm ~)
Film deformation after UV irradiation: Observed with the naked eye.
Durability characteristics after moisture resistance test:
The appearance (color loss and film modification) after leaving the polarizing plate in a moisture resistance test tank at 60 ° C.-90% for 500 hours was evaluated according to the following criteria.
X: Peeling and deformation, and color loss at the polarizer portion occur strongly.
Δ: Peeling and deformation, and color loss of the polarizer portion occurs.
○: Color loss of the polarizer portion occurs very slightly, but no peeling or deformation occurs.
A: No peeling, deformation, or color loss of the polarizer part occurs.
Optical properties after moisture resistance test:
About the polarizing plate before and after the moisture resistance test, the degree of polarization and the transmittance were measured and evaluated by their deterioration (decrease from the value of the polarizing plate before the moisture resistance test).
* Deformation (deformation, durability, optical properties) of the polarizing plate was deteriorated not only by heat but also by ultraviolet rays.
From Table 2, when heated to 40-70 ° C. and then cured by light irradiation, the photo-curable epoxy resin adhesive is sufficiently cured to exhibit good adhesiveness, and there is almost no deformation of the film. I understand. On the other hand, when the heating temperature was 25 ° C. or 30 ° C., the film was not deformed, but the photocurable epoxy resin adhesive was insufficiently cured or uncured, and the adhesion was extremely poor. Further, when the curing temperature was 80 to 100 ° C. or higher, the photocurable epoxy resin adhesive was sufficiently cured to show good adhesiveness, but the film was slightly warped. On the other hand, when the temperature exceeds 100 ° C., the photocurable epoxy resin adhesive is sufficiently cured and exhibits good adhesiveness, but the film is greatly modified.
The same examination was performed on the photocurable resins B and C, and almost the same results were obtained although there were some differences in adhesiveness.
Production Examples 7 to 13 and Comparative Production Examples 4 to 6 Production of Polarizing Plate In production of the polarizing plates of Production Examples 1 to 6 and Comparative Production Examples 1 to 3, the wavelength between the metal halide lamp and the adherend film is 390 nm or less. An optical filter (manufactured by Eye Graphics Co., Ltd.) for cutting light was placed and an adhesive device was used, and polarizing plates of Production Examples 7 to 13 and Comparative Production Examples 4 to 6 were obtained in the same manner.
From Table 3, when an optical filter that cuts light with a wavelength of 390 nm or less is placed between the metal halide lamp and the adherend, the polarizer and film are less modified and better adhesion and durability than when not placed. A polarizing plate having characteristics was obtained. In addition, in place of the wavelength cut filter of 390 nm or less, the same result was obtained even when using a wavelength cut filter of 320 nm or less, a wavelength cut filter of 340 nm or less, or a wavelength cut filter of 370 nm or less. The use of the wavelength cut filter had the least influence on the constituent films. By using an optical filter, the deformation of the film when heated to 120 ° C. could be suppressed, but the deformation of the film when heated to 140 ° C. could not be suppressed.
Comparative Production Examples 7 to 12 Production of Polarizing Plate In the same manner as in Example 1, a three-layer structure laminated film was obtained. The obtained film having a three-layer structure was heated without using a metal halide lamp (manufactured by Eye Graphics Co., Ltd.), with an irradiation intensity of 500 mW / cm 2 (405 nm), an integrated light amount, 500, 1000, 2000 and 3000 mJ / Light irradiation was performed at cm 2 (405 nm) to obtain a polarizing plate. Furthermore, in the case of an integrated light quantity of 2000 and 3000 mJ / cm 2 (405 nm), an optical filter (made by Eye Graphics Co., Ltd.) that cuts light with a wavelength of 390 nm or less disposed between the metal halide lamp and the adherend film is used. Light irradiation was performed to obtain a polarizing plate.
From Table 4, when heating was not performed before light irradiation, it was not possible to obtain a polarizing plate having excellent adhesion and no deformation of the film even if the amount of light irradiation was increased or decreased.
本発明のフィルム接着装置は、電気・電子機器を含む産業分野において使用される偏光板を構成するフィルムの接着に用いることができる。 The film bonding apparatus of the present invention can be used for bonding a film constituting a polarizing plate used in an industrial field including electric and electronic devices.
1:フィルム接着装置
2:加温ランプ
3:紫外線ランプ
4:コンベア
5:被着体フィルム
6:コールドミラー
7:光学フィルタ
10:偏光子フィルム
11:保護フィルム
12:光学補償フィルム
1: Film bonding apparatus 2: Heating lamp 3: UV lamp 4: Conveyor 5: Substrate film 6: Cold mirror 7: Optical filter 10: Polarizer film 11: Protective film 12: Optical compensation film
Claims (7)
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JP2007122696A JP5046735B2 (en) | 2007-05-07 | 2007-05-07 | Film bonding apparatus and polarizing plate manufacturing apparatus |
TW97114447A TWI466974B (en) | 2007-05-07 | 2008-04-21 | Film adhering apparatus and polarizing plate manufacturing apparatus |
CNA2008100967103A CN101301806A (en) | 2007-05-07 | 2008-05-05 | Film sticking apparatus and manufacturing method of polaroid sheet |
KR1020080041980A KR101227357B1 (en) | 2007-05-07 | 2008-05-06 | Film adhesion apparatus and polarizing plate manufacturing apparatus |
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JP2010262094A (en) * | 2009-05-01 | 2010-11-18 | Sumitomo Chemical Co Ltd | Polarizing plate, liquid crystal panel using the same, and liquid crystal display device |
JP5313297B2 (en) * | 2010-12-24 | 2013-10-09 | 日東電工株式会社 | Active energy ray-curable adhesive composition, polarizing plate, optical film, and image display device |
JP6298248B2 (en) * | 2010-12-24 | 2018-03-20 | 日東電工株式会社 | Active energy ray-curable adhesive composition, polarizing plate, optical film, and image display device |
JP5665622B2 (en) * | 2011-03-09 | 2015-02-04 | 株式会社サンリッツ | Polarizing plate manufacturing apparatus, polarizing plate manufacturing method, polarizing plate, and liquid crystal display device using the same |
JP2012208187A (en) * | 2011-03-29 | 2012-10-25 | Sumitomo Chemical Co Ltd | Method for manufacturing polarizing plate |
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KR101422664B1 (en) * | 2011-12-20 | 2014-07-24 | 제일모직주식회사 | Method for patterning coating layer and film comprising patterned coating layer fabricated using the same |
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JP6205180B2 (en) * | 2012-06-08 | 2017-09-27 | 日東電工株式会社 | Active energy ray-curable adhesive composition, polarizing film and method for producing the same, optical film and image display device |
JP6205179B2 (en) * | 2012-06-08 | 2017-09-27 | 日東電工株式会社 | Active energy ray-curable adhesive composition, polarizing film and method for producing the same, optical film and image display device |
JP6371031B2 (en) * | 2012-07-02 | 2018-08-08 | 住友化学株式会社 | Polarizing plate manufacturing method and manufacturing apparatus |
JP2014056040A (en) * | 2012-09-11 | 2014-03-27 | Sumitomo Chemical Co Ltd | Method and apparatus for producing polarizing plate |
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CN103325918A (en) * | 2013-04-03 | 2013-09-25 | 杭州杭科光电股份有限公司 | Packaging process of light emitting diodes |
JP6122337B2 (en) | 2013-04-26 | 2017-04-26 | 日東電工株式会社 | Polarizing film and method for manufacturing the same, optical film and image display device |
CN105263687B (en) * | 2013-06-25 | 2017-12-19 | 昭和电工株式会社 | The manufacture device and manufacture method of light-cured resin film |
KR101938411B1 (en) * | 2014-01-13 | 2019-01-15 | 동우 화인켐 주식회사 | Polarizing plate |
WO2016052244A1 (en) * | 2014-09-29 | 2016-04-07 | 株式会社Adeka | Photocurable adhesive, and polarizing plate, laminated optical member, and liquid crystal display device using same |
JP6180451B2 (en) * | 2015-02-06 | 2017-08-16 | 日東電工株式会社 | Polarizing plate, method for producing the polarizing plate, optical film, and image display device |
KR20230148394A (en) * | 2016-09-06 | 2023-10-24 | 스미또모 가가꾸 가부시키가이샤 | Polarizing plate and method for producing same |
WO2018180269A1 (en) * | 2017-03-31 | 2018-10-04 | Agc株式会社 | Optical element and manufacturing method for optical element |
JP6335360B2 (en) * | 2017-04-27 | 2018-05-30 | 日東電工株式会社 | Polarizing plate, method for producing the polarizing plate, optical film, and image display device |
JP6622347B2 (en) * | 2018-04-06 | 2019-12-18 | 住友化学株式会社 | Polarizing plate manufacturing method and manufacturing apparatus |
JP6909270B2 (en) * | 2018-04-06 | 2021-07-28 | 住友化学株式会社 | Polarizing plate manufacturing method and manufacturing equipment |
KR102471993B1 (en) * | 2018-08-10 | 2022-11-29 | 동우 화인켐 주식회사 | Film coating method |
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JP4306270B2 (en) * | 2003-02-12 | 2009-07-29 | 住友化学株式会社 | Polarizing plate, manufacturing method thereof, optical member, and liquid crystal display device |
JP4391177B2 (en) * | 2003-09-17 | 2009-12-24 | 株式会社リコー | Sealant for photo-curable display element |
KR100738810B1 (en) * | 2005-06-07 | 2007-07-12 | 엘지.필립스 엘시디 주식회사 | apparatus for forming photo alignment film and method thereof |
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KR101227357B1 (en) | 2013-01-28 |
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