JPS5850501A - Polarizer - Google Patents
PolarizerInfo
- Publication number
- JPS5850501A JPS5850501A JP15011781A JP15011781A JPS5850501A JP S5850501 A JPS5850501 A JP S5850501A JP 15011781 A JP15011781 A JP 15011781A JP 15011781 A JP15011781 A JP 15011781A JP S5850501 A JPS5850501 A JP S5850501A
- Authority
- JP
- Japan
- Prior art keywords
- film
- polarizing
- vinyl acetate
- polarizing film
- ethylene
- 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.)
- Granted
Links
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 16
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 13
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 13
- 239000005977 Ethylene Substances 0.000 claims abstract description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 8
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007127 saponification reaction Methods 0.000 claims abstract description 4
- 229920000642 polymer Polymers 0.000 claims description 5
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 13
- 230000001070 adhesive effect Effects 0.000 abstract description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 12
- 239000011241 protective layer Substances 0.000 abstract description 11
- 239000010410 layer Substances 0.000 abstract description 10
- 239000012046 mixed solvent Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 22
- 239000000243 solution Substances 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 3
- 229920002284 Cellulose triacetate Polymers 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 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
- 238000005299 abrasion Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- UPZFLZYXYGBAPL-UHFFFAOYSA-N 2-ethyl-2-methyl-1,3-dioxolane Chemical compound CCC1(C)OCCO1 UPZFLZYXYGBAPL-UHFFFAOYSA-N 0.000 description 1
- DSVJACBOTXNJFR-UHFFFAOYSA-N 2-ethylhexyl prop-2-enoate;2-methylprop-2-enoic acid Chemical compound CC(=C)C(O)=O.CCCCC(CC)COC(=O)C=C DSVJACBOTXNJFR-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 240000009088 Fragaria x ananassa Species 0.000 description 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 description 1
- 229940015043 glyoxal Drugs 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 235000021012 strawberries Nutrition 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- -1 vinyl halide Chemical class 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、偏光フィルムに特定の保護層を設けた偏光板
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polarizing plate in which a polarizing film is provided with a specific protective layer.
偏光フィルム用の保護フィルムとしてｄ、（１１可視光
線透過性が良好であること、（２）光学的に等方である
こと、（３）耐熱性が良好であること、（４）耐紫外線
性が良好であること、（５）耐、透湿性がすぐれている
こと、（６）耐摩耗性が良好であること、（７）偏光フ
ィルムとの密着畦がすぐれていることなどの特性を全て
具備すること−ｊＫ要求されるが、これらの条件を全て
満足する材料は未だ見出されていない。As a protective film for polarizing film, (11) Good visible light transmittance, (2) Optically isotropic, (3) Good heat resistance, (4) Ultraviolet resistance. (5) good resistance and moisture permeability, (6) good abrasion resistance, and (7) good adhesion to the polarizing film. However, a material that satisfies all of these conditions has not yet been found.
しかして比較的すぐれている保護フィルムとして三酢駿
セルロースフィルムがあげられ、このフィルムが現在で
は保護フィルムとして最も多く使用されているが、耐透
湿性が若干不足するため、たとえばヨ９素牽偏光素子と
するポリビニルアルコール偏光フィルムの場合、ポリビ
ニルアルコール・ａり素コンプレックスの分解に基＜ａ
光度の低下を招くこと、耐摩耗性が充分でないため表両
に傷がつきやすく透明性を損なうことがあること、ポリ
ビニルアルコール系偏光フィルムなど汎用の偏光フィル
ムとの貼合に際し適当なｉ着剤が見当らず、貼合強度が
必ずしも充分でないことなどの間層がある。However, a comparatively excellent protective film is the Sansujin cellulose film, which is currently the most commonly used protective film, but because of its slightly insufficient moisture permeability, it In the case of a polyvinyl alcohol polarizing film used as an element, the decomposition of the polyvinyl alcohol/arsenic complex
It may cause a decrease in luminous intensity, it may cause scratches on both surfaces due to insufficient abrasion resistance, and it may impair transparency. It is an adhesive that is suitable for lamination with general-purpose polarizing films such as polyvinyl alcohol-based polarizing films. There are some problems, such as the lack of bonding strength, and the bonding strength is not necessarily sufficient.
な自他の保護フィルム、たとえばポリカーボネートフィ
ルム、ポリメタクリル酸メチルフィルム、ポリ塩化ビニ
ルフィルムなどは三酢酸セルロースフィルムに比し種々
の点で保護フィルムとして難があり、実用上はほとんど
用いられていない。Other protective films, such as polycarbonate films, polymethyl methacrylate films, and polyvinyl chloride films, have various disadvantages as protective films compared to cellulose triacetate films, and are hardly used in practice.
本発明は上記のような従来の問題点を解決したものであ
る。The present invention solves the above-mentioned conventional problems.
本発明の偏光板は、偏光フィルムの少なくとも片面に、
エチレン含量１５〜５５モル％、酢酸ビニル成分のグン
化度９５モル動以上のエチレン−酢酸ビニル共重合体ク
ン化物の層を設けたものである。The polarizing plate of the present invention includes, on at least one side of the polarizing film,
A layer of an ethylene-vinyl acetate copolymer having an ethylene content of 15 to 55 mol% and a vinyl acetate component having a molar degree of 95 or more is provided.
本発明における保護層としてのエチレン−酢酸ビニル共
重合体グン化物層は、可視光線透過性、光学的等方性を
具備している上、汎用のポリビニルアルコール系偏光フ
ィルムと同系統の水酸基を含む重合体の層であることか
らも理解できるように両者を接着した際の密着強度が大
きく、又耐熱性、耐透湿性がすぐれているため偏光板を
湿島躯珊しても偏光度がほとんど低下しないという順着
な効果を奏し、さらには耐紫外線性、耐摩耗性もすぐれ
ているという特質を有する。The ethylene-vinyl acetate copolymer gunide layer as a protective layer in the present invention has visible light transmittance and optical isotropy, and also contains hydroxyl groups of the same type as general-purpose polyvinyl alcohol polarizing films. As can be understood from the fact that it is a polymer layer, the adhesion strength is high when the two are bonded together, and the heat resistance and moisture permeation resistance are excellent, so even when the polarizing plate is placed on a wet island, the degree of polarization is almost negligible. It has a consistent effect of not deteriorating, and also has excellent ultraviolet ray resistance and abrasion resistance.
エン系偏光フィルム（たとえばハロゲン化ビニル系重合
体を脱ハロゲン化水素したフィルムを一軸延伸したもの
、酢酸ビニル系重合体を脱酢酸したフイＡ／ＡＧ−軸−
伸したもの、ポリビニルアルコールフィルムを脱水した
フィルムを一軸延伸したものなど）、−ビニルアルコー
ル重合体・偏光素子系偏光フィルムをはじめ公知の偏光
フィルムがいずれも用いられる。En-based polarizing film (for example, uniaxially stretched film obtained by dehydrohalogenating a vinyl halide polymer, film A/AG-axis obtained by deacetating a vinyl acetate polymer)
Any known polarizing film can be used, including a stretched film, a uniaxially stretched film obtained by dehydrating a polyvinyl alcohol film, a vinyl alcohol polymer/polarizing element type polarizing film, and the like.
これらの中では−のビニルアルコール重合体・偏光素子
系偏光フィルムが特に重要である。ここテに’ 二Ａ’
７ Ａ／ ：ｌ−ル重合体とはポリビニルアルコール
のほか、不飽和カルボン酸又はその誘導体、不飽和スル
ホン竣又はその誘導体、炭素数３〜′５゜のα−１１／
フインなど゛で共重合変性されたポリビニルアルコール
、ホルムアルデヒド、アセトアルデヒド、ブチルアルデ
ヒド、グリオキザールなどでアセタール化されたポリビ
ニルアルコール エ＋ レン−酢酸ヒニル共菫合体クン
化物（特にエチレン含量１５〜５５モル％、酢酸ビニル
成分のグン化度９０モル゛％以上のもの）などがあげら
れ、偏光゛素子としてはヨウ素、二色性染料などがあげ
られる。偏光素子の吸着はビニルアルコール重合体フィ
ルムの一軸延伸の前又は後或いは延伸と同時に行われる
が、フィルム製造時の製膜液に偏光素子を添加するとと
もできる。Among these, - vinyl alcohol polymer/polarizing element type polarizing films are particularly important. '2A' here
7 A/:L polymers include, in addition to polyvinyl alcohol, unsaturated carboxylic acids or derivatives thereof, unsaturated sulfones or derivatives thereof, α-11/ having a carbon number of 3 to '5°.
Polyvinyl alcohol copolymerized and modified with fins, etc.; polyvinyl alcohol acetalized with formaldehyde, acetaldehyde, butyraldehyde, glyoxal, etc.; Examples of polarizing elements include iodine and dichroic dyes. Adsorption of the polarizing element can be carried out before, after or simultaneously with the uniaxial stretching of the vinyl alcohol polymer film, but it can also be done by adding the polarizing element to the film forming solution during film production.
保護層を構成するエチレン−酢酸ビニル゛共重合体クン
化物−’ｈ Ｌでは、エチレン含量１５〜５５モル％、
酢酸ビニル成分のケン化度９５モル％以上のエチレン−
酢酸ビニル共重合体ケン化物が用いられる。エチレン含
量が１５モル％未満では耐透湿性、耐温熱性が−劣り、
５５モル％を越えると可視光線透過性が低下する。又グ
ン化度が９５モル％未満では耐透湿性が低下する。なお
エチレンと酢酸ビール（或いａＣれをグン化゛シたビニ
ルアルコール）の各成分のほかにプロピレンなど他の共
重合成分を少量含んで゛いてもよい。In the ethylene-vinyl acetate copolymer cyanide-'hL constituting the protective layer, the ethylene content is 15 to 55 mol%,
Ethylene with saponification degree of vinyl acetate component of 95 mol% or more
A saponified vinyl acetate copolymer is used. If the ethylene content is less than 15 mol%, the moisture permeability and temperature resistance will be poor.
When it exceeds 55 mol%, visible light transmittance decreases. Moreover, if the degree of gunning is less than 95 mol%, the moisture permeability resistance will decrease. In addition to the components of ethylene and beer acetate (or vinyl alcohol with acetic acid), it may also contain a small amount of other copolymer components such as propylene.
この層の厚みは特に限定はないが、通常は数戸ないし１
００声”程度とする。There is no particular limit to the thickness of this layer, but it is usually several to one
It should be about 00 voices.
偏光フィルム上に上記保護層を設ける方法としては、
ビ） 偏光フィルムとエチレン−酢酸ビニル共重合体ケ
ン化物フィルムとを接着する方法、−偏光ズイルム上に
ヱチレンー酢酸ビニル共重合体グン化物の溶液を塗布、
５乾燥する方法、かいずれも採用される。Methods for providing the above-mentioned protective layer on the polarizing film include: b) adhering the polarizing film and the saponified ethylene-vinyl acetate copolymer film; - applying a solution of the ethylene-vinyl acetate copolymer gun on the polarizing film; coating,
5 drying method may be adopted.
（イ）の方法の場合、エチレン−酢酸ビニル共重合体ケ
ン化物フィルム（保護フィルム）の製造は、エチレン−
酢酸ビニル共重合体グン化物を水と炭素数２〜４のアル
コールとの混合溶剤等に溶解してから流延製膜すること
により行うのが望ましい。In the case of method (a), the production of saponified ethylene-vinyl acetate copolymer film (protective film) is
It is preferable to dissolve the vinyl acetate copolymer gunnide in a mixed solvent of water and an alcohol having 2 to 4 carbon atoms, and then cast it into a film.
藺の場合、偏光フィルムと保護フィルムとの積層は、水
−アルコール混合Ｓ剤、水−アルコール−フェノール混
合溶剤、これらの混合溶剤にエチレン−酢酸ビニル共重
合体ケン化物を溶解した溶液、無機塩を水・有機溶剤・
水−有機溶剤混合溶剤に溶解した溶液、ポリビニルアル
コール水溶液、ウレタン系、エポキシ系、インシアネー
ト系、ポリエステル系、アクリル系、塩化ビニル−酢酸
ビニル共重合体系、エチレン−酢鹸ビニル共重合体系、
ポリアミド系、シアノアクリレート系、ブチラール系、
ポリビニルエーテル系、ニトリル系、天然又は合成ゴム
系の接着剤（感圧接着剤を含む）などの接着剤を用いて
接着するξとにより行われる。偏光フィルムと上記保護
フィルムとは本質的Ｅｔｉ同系統のフィルムであるため
、接着強度が大きいことが本発明の特長の−ってもある
。In the case of strawberries, the lamination of the polarizing film and the protective film is done using a water-alcohol mixed S agent, a water-alcohol-phenol mixed solvent, a solution of saponified ethylene-vinyl acetate copolymer dissolved in these mixed solvents, or an inorganic salt. Water, organic solvents,
Solutions dissolved in water-organic solvent mixed solvents, polyvinyl alcohol aqueous solutions, urethane systems, epoxy systems, incyanate systems, polyester systems, acrylic systems, vinyl chloride-vinyl acetate copolymer systems, ethylene-acetic acid vinyl copolymer systems,
Polyamide-based, cyanoacrylate-based, butyral-based,
This is done by adhesion using an adhesive such as polyvinyl ether, nitrile, natural or synthetic rubber adhesive (including pressure sensitive adhesive). Since the polarizing film and the above-mentioned protective film are essentially films of the same Eti family, one of the features of the present invention is that they have high adhesive strength.
−の方法の場合は、偏光フィルム上に直接又は偏光フィ
ルム上にアンカーコーティングを施してから、エチレン
−酢酸ビニル共重合体グン化物を水と炭素数２〜４のア
ルコールとの混合溶剤等に溶解した溶液を塗布又は浸漬
し、乾燥する。In the case of method -, the ethylene-vinyl acetate copolymer gunnide is dissolved directly on the polarizing film or after applying an anchor coating on the polarizing film in a mixed solvent of water and alcohol having 2 to 4 carbon atoms. Apply or dip in the solution and dry.
保護層は偏光フィルムの片面又は両面に設ける。The protective layer is provided on one or both sides of the polarizing film.
第１図は偏光フィルムの片ｉｉｉに保護フィルムを揮発
性液体接着剤を用いて接着するか或いは偏光フィルムの
片面に樹脂溶液を塗布、乾燥して保護層を形成させた例
、第２図、第５図は偏光フィルムの片面又は両面に接着
剤側介□在させて保護層を設けた例であり、１が偏光フ
ィルム、２が保護層、６が接着剤層である。Figure 1 shows an example in which a protective film is bonded to piece iii of the polarizing film using a volatile liquid adhesive, or a resin solution is applied to one side of the polarizing film and dried to form a protective layer. FIG. 5 shows an example in which a protective layer is provided on one or both sides of a polarizing film with an adhesive interposed therebetween, where 1 is a polarizing film, 2 is a protective layer, and 6 is an adhesive layer.
次に例をあげて本発明の偏光板をさらに説明する。以下
ｒ％Ｊとあるのは特にことわりのない限抄重量％である
。Next, the polarizing plate of the present invention will be further explained by giving an example. Hereinafter, r%J refers to limited paper weight % unless otherwise specified.
例１
流延製膜法により得た厚み６８声のポリビニルアルコー
ル（重合度１７００、グン化９９９．５モル％）フィル
ムをヨク素０．１＊ｉ、ｉｉつ化カリクム１．５％、轡
つ酸１．５％を含む温度２０つの水溶液に１分間浸漬し
て染色し、ついでこの水溶液中で５．５倍に」軸延伸し
た後、ホウ酸のｔ、Ｓ＊水溶液中に１分間浸漬し、７１
０で５分間乾燥を行って偏光フィルムを得た。Example 1 A 68-thick polyvinyl alcohol (degree of polymerization, 999.5 mol% polymerization) film obtained by casting film-forming method was mixed with 0.1% iodide, 1.5% potassium chloride, and 1.5% iodide. It was dyed by immersing it in an aqueous solution containing 1.5% acid at a temperature of 20 degrees for 1 minute, then axially stretching it 5.5 times in this aqueous solution, and then immersing it in a t, S* aqueous solution of boric acid for 1 minute. , 71
A polarizing film was obtained by drying at 0 for 5 minutes.
又エチレンー酢酸ビニル共重合体グン化物（エチルシン
含量４０モル％、酢酸ビニル成分のグン化９９９．２モ
ル％）をイソプロパノ−ルー水（ｌ量比５５：４５）混
合溶剤に溶解して濃度２５％の溶液を調製し、流延製膜
法により厚み５０μのフィルム（保護フィル１ム）を作
成した。In addition, an ethylene-vinyl acetate copolymer gun compound (ethylsine content: 40 mol%, vinyl acetate component gun conversion: 999.2 mol%) was dissolved in a mixed solvent of isopropanol and water (l ratio 55:45) to give a concentration of 25%. A solution of the above was prepared, and a film with a thickness of 50 μm (1 film of protective film) was created by a casting method.
この保護フィルムに酢酸ビニル−アクリル酸エステル系
接着剤を乾燥基準で５μとなるよ−うに塗−層間密着性
は２０℃、６５％ＲＨにおける剥離強−０乾熱処履は８
０′ｏ、２００時間。A vinyl acetate-acrylic acid ester adhesive was applied to this protective film to a thickness of 5μ on a dry basis.The interlayer adhesion was 20°C and 65%RH, and the peel strength was 0.The dry heat treatment was 8.
0'o, 200 hours.
湿熱部層は５０′０１９５１１１１１下で２００時間。The heat and humidity layer was heated under 50'019511111 for 200 hours.
例２
エチレン−酢酸ビニル共重合体クン化物（エチレン含量
３０モル％、酢酸ビニル成分のケン化度９９．１モル弗
）をｎ−１０パノール−水＜を量比５０：５，０）５！
合溶剤に溶解して濃度２５ｇ６の溶液を編製し、流延製
膜法により厚み３６声のフィルムを作った。次にこのフ
ィルムをヨウ素０．２１１６゜ヨ９些カリウム１．５％
、ホウ酸１．５％を含む温度４０′ｏの水溶液に浸漬し
て染色し、ついで温度２００４水浴中で６．５倍に一軸
延伸し、さらにこれをホウ酸の１．５ ｇ６水溶液中に
、１分間浸漬し、７０℃で５分間乾燥を行って偏光フィ
ルムを得た。Example 2 An ethylene-vinyl acetate copolymer saponide (ethylene content 30 mol%, degree of saponification of vinyl acetate component 99.1 mol) was mixed with n-10 panol-water (quantity ratio 50:5,0) 5!
A solution having a concentration of 25g6 was prepared by dissolving it in a solvent mixture, and a film having a thickness of 36 tones was made by a casting method. Next, add this film to 0.2116° of iodine and 1.5% of potassium.
, immersed in an aqueous solution containing 1.5% boric acid at a temperature of 40'o for dyeing, then uniaxially stretched to 6.5 times in a water bath at a temperature of 2004°C, and then immersed in an aqueous solution of 1.5 g6 of boric acid. , immersed for 1 minute, and dried at 70° C. for 5 minutes to obtain a polarizing film.
ン化物の１−１０パノール−水混合溶剤溶液から流延製
膜法により厚み５０声のフィルム（保護フィルム）を作
成した。A film (protective film) with a thickness of 50 mm was prepared from a 1-10 panol-water mixed solvent solution of the compound.
、この保護フィルムに塩化ビニル−酢酸ビニル共重金体
系接着剤を乾燥基準で５μとなるよう（塗布した後、上
記偏光フィルムの両面に７０’ｌ）。, Apply a vinyl chloride-vinyl acetate co-heavy metal adhesive to this protective film to a thickness of 5μ on a dry basis (after application, apply 70′L to both sides of the polarizing film).
２．５−の条件でこの保護フィルムを加熱加圧接着して
偏光板を得た。This protective film was bonded under heat and pressure under conditions of 2.5- to obtain a polarizing plate.
かくして得られた偏光板について密着性、透過率を測定
した。結果を第２表に示す。Adhesion and transmittance of the thus obtained polarizing plate were measured. The results are shown in Table 2.
対照例５
保護フィルムとして厚み８０μの三酢駿セルロースフィ
ルムを用いたほかは例１と同様にして偏光板を作成し、
測定を行った。結果を第２表に合せて示す。Comparative Example 5 A polarizing plate was prepared in the same manner as in Example 1, except that an 80μ thick Sanzu Shun cellulose film was used as the protective film.
Measurements were taken. The results are also shown in Table 2.
第 ２ 表
例Ｓ
例２の保護フィルムの片函にアクリル系感Ｊｌｌｔｌ看
剤（アクリル酸２−エチルヘキシル−メタクリル酸共重
合体）の溶液を塗布して厚み２５声の粘着剤層を形成さ
せ、その上から剥離紙を積層した。Table 2 Example S A solution of an acrylic adhesive (2-ethylhexyl acrylate-methacrylic acid copolymer) was applied to a box of the protective film of Example 2 to form an adhesive layer with a thickness of 25 tones. A release paper was laminated on top of that.
この積層体から剥離紙を剥離しながら、保１ｍ［フルム
／感圧接着剤よ秒なるフィルムを例２で得偏光フィルム
上に圧着し、保護フィルム／粘着７偏光フイルムよりな
る構成の偏光板を得た。While peeling off the release paper from this laminate, the film made of film/pressure-sensitive adhesive was pressure-bonded onto the polarizing film obtained in Example 2, and a polarizing plate composed of protective film/adhesive 7 polarizing film was prepared. Obtained.
かくして得られた偏光板の層間制能強度ｔｆ２５０／１
５＠Ｉ巾てあった〇
照例６
保護フィルムとして対照例５の三酢酸セルローフィルム
を用いたほか社例５と同様にして偏光を得たが、偏光板
の層間制能強度は１２０Ｆ／１５巾と例３に比しては小
さかった。Interlayer control strength tf250/1 of the polarizing plate thus obtained
5@I width 〇Reference Example 6 Polarized light was obtained in the same manner as Example 5 except that the cellulose triacetate film of Control Example 5 was used as a protective film, but the interlayer control strength of the polarizing plate was 120F/15 width. This was smaller than that of Example 3.
例２の偏光フィルムの両面にアクリル系感圧接剤の厚み
２５μの層を形成させ、゛その上からそぞれ剥離紙を積
層した〇
この積層体から剥離紙を剥離しながら両面に例の保護フ
ィルムを圧着し、保護フィルム／粘着剤／偏光フィルム
／粘着剤／Ｊｌ護フィルムよりなる構成の偏光板を得た
。A 25μ thick layer of acrylic pressure-sensitive adhesive was formed on both sides of the polarizing film of Example 2, and a release paper was laminated on top of each layer.While peeling the release paper from this laminate, the protection of Example 2 was applied to both sides. The film was pressure-bonded to obtain a polarizing plate having a structure of protective film/adhesive/polarizing film/adhesive/Jl protective film.
かくして得られた偏光板の層間剥離強度Ｆｉ２４０ｐ／
１５ｍ巾であった＠
対照例６
保護フィルムとして対照例５の三酢酸セルロースフィル
ムを用いたほかは例４と同様にして偏光板を得たが、偏
光板の層間剥離強度は１３０ｒ／１５−巾と例４に比し
ては小さかった。The interlayer peeling strength of the polarizing plate thus obtained was 240p/
It was 15 m wide @ Control Example 6 A polarizing plate was obtained in the same manner as in Example 4 except that the cellulose triacetate film of Control Example 5 was used as a protective film, but the delamination strength of the polarizing plate was 130 r/15-width. This was smaller than that of Example 4.
例５
例１に詔けるポリビニルアルコール・ヨウ素系偏光フィ
ルムの両面にインシアネート系接着剤を塗布、乾燥して
約５声のアンカーコーチインク層を予め設け、ついでこ
の上から例１に怠ける保護フィルム製造用の原液を塗布
、、乾燥した。これにより偏光フィルムの両面に各１５
声の保請層が形成された。Example 5 Apply an incyanate adhesive to both sides of the polyvinyl alcohol/iodine polarizing film used in Example 1, dry it to pre-form an anchor coach ink layer of approximately 5 tones, and then apply the protective film on top of this as described in Example 1. The stock solution for manufacturing was applied and dried. As a result, 15
A voice support layer was formed.
かくして得られた積層板の層間密着性は５８０２
ｒ／Ｉｇ−であゆ、又透過率も例１に準する結果を示
した。The interlayer adhesion of the thus obtained laminate was 5802.
r/Ig-Ayu and the transmittance also showed results similar to Example 1.
４ １１ｍ１ｔの簡単な脱明
第１〜３図岐本発明の偏光板を例示的に示した断画図で
ある。FIG. 4 is a cross-sectional view illustrating a polarizing plate of the present invention in a simple manner.
１−−−−−−−−、・偏光フィルム ２−・・・・・・−・保護層 ５・・−−一・−・・接着剤層1----------, ・Polarizing film 2-・・・・・・-・Protective layer 5.--1.--adhesive layer
Claims (1)
５〜５５モル％、酢酸ビニル成分のケン化度９５モル％
以上のエチレン−酢酸ビニル具重合体グン化物の層を設
尋すでなる偏光板。 ２ 偏光フィルムがビニルアルコール重合体・偏光素子
系偏光フィルムで゛ある特許請求の範囲第１項記載の偏
光板。[Claims] 1. At least one side of the polarizing film has a 1-ethylene ethylene content of 1
5 to 55 mol%, degree of saponification of vinyl acetate component 95 mol%
A polarizing plate comprising a layer of the above ethylene-vinyl acetate polymer. 2. The polarizing plate according to claim 1, wherein the polarizing film is a vinyl alcohol polymer/polarizing element type polarizing film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15011781A JPS5850501A (en) | 1981-09-22 | 1981-09-22 | Polarizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15011781A JPS5850501A (en) | 1981-09-22 | 1981-09-22 | Polarizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5850501A true JPS5850501A (en) | 1983-03-25 |
| JPH0323881B2 JPH0323881B2 (en) | 1991-03-29 |
Family
ID=15489853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15011781A Granted JPS5850501A (en) | 1981-09-22 | 1981-09-22 | Polarizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850501A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60159706A (en) * | 1984-01-30 | 1985-08-21 | Sekisui Chem Co Ltd | Polarizing plate |
| JPS60190342A (en) * | 1984-03-12 | 1985-09-27 | 住友ベークライト株式会社 | High gas barrier property transparent conductive film |
| JPS60192621A (en) * | 1984-03-14 | 1985-10-01 | 住友ベークライト株式会社 | Transparent conductive film with high gas barrier property polarizing film |
| JPS62211602A (en) * | 1986-03-13 | 1987-09-17 | Nippon Kayaku Co Ltd | Polarizing film or polarizing plate |
| CN107921518A (en) * | 2015-08-26 | 2018-04-17 | 东洋制罐集团控股株式会社 | Processing punch die and punch die module is thinned |
-
1981
- 1981-09-22 JP JP15011781A patent/JPS5850501A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60159706A (en) * | 1984-01-30 | 1985-08-21 | Sekisui Chem Co Ltd | Polarizing plate |
| JPS60190342A (en) * | 1984-03-12 | 1985-09-27 | 住友ベークライト株式会社 | High gas barrier property transparent conductive film |
| JPS60192621A (en) * | 1984-03-14 | 1985-10-01 | 住友ベークライト株式会社 | Transparent conductive film with high gas barrier property polarizing film |
| JPS62211602A (en) * | 1986-03-13 | 1987-09-17 | Nippon Kayaku Co Ltd | Polarizing film or polarizing plate |
| CN107921518A (en) * | 2015-08-26 | 2018-04-17 | 东洋制罐集团控股株式会社 | Processing punch die and punch die module is thinned |
| CN107921518B (en) * | 2015-08-26 | 2020-05-08 | 东洋制罐集团控股株式会社 | Dies and Die Modules for Thinning |
| US12343778B2 (en) | 2015-08-26 | 2025-07-01 | Toyo Seikan Group Holdings, Ltd. | Die for ironing working and die module |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0323881B2 (en) | 1991-03-29 |
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