JPH0338565B2 - - Google Patents
Info
- Publication number
- JPH0338565B2 JPH0338565B2 JP18485581A JP18485581A JPH0338565B2 JP H0338565 B2 JPH0338565 B2 JP H0338565B2 JP 18485581 A JP18485581 A JP 18485581A JP 18485581 A JP18485581 A JP 18485581A JP H0338565 B2 JPH0338565 B2 JP H0338565B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- polarizing
- heating
- iodine
- dichroic dye
- 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.)
- Expired
Links
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000011630 iodine Substances 0.000 claims description 11
- 229910052740 iodine Inorganic materials 0.000 claims description 11
- 229920001477 hydrophilic polymer Polymers 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000975 dye Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- 235000010338 boric acid Nutrition 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 4
- 229960002645 boric acid Drugs 0.000 description 4
- 125000005619 boric acid group Chemical class 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 3
- BPHHNXJPFPEJOF-UHFFFAOYSA-J chembl296966 Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]S(=O)(=O)C1=CC(S([O-])(=O)=O)=C(N)C2=C(O)C(N=NC3=CC=C(C=C3OC)C=3C=C(C(=CC=3)N=NC=3C(=C4C(N)=C(C=C(C4=CC=3)S([O-])(=O)=O)S([O-])(=O)=O)O)OC)=CC=C21 BPHHNXJPFPEJOF-UHFFFAOYSA-J 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- XDVOLDOITVSJGL-UHFFFAOYSA-N 3,7-dihydroxy-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound O1B(O)OB2OB(O)OB1O2 XDVOLDOITVSJGL-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 235000019646 color tone Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- VGTPKLINSHNZRD-UHFFFAOYSA-N oxoborinic acid Chemical compound OB=O VGTPKLINSHNZRD-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00865—Applying coatings; tinting; colouring
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
Description
【発明の詳細な説明】
本発明は良好な染色濃度と偏光特性を有するパ
ターン状偏光フイルムの製法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a patterned polarizing film having good dyeing density and polarizing properties.
従来、偏光フイルムは、親水性高分子フイルム
を沃素及び／又は二色性染料を含む水浴中に浸漬
してフイルムを膨潤させ、沃素及び／又は二色性
染料を吸着配向させて製造している。 Conventionally, polarizing films are manufactured by immersing a hydrophilic polymer film in a water bath containing iodine and/or dichroic dyes to swell the film and adsorbing and orienting the iodine and/or dichroic dyes. .
しかして、この従来方法では、水浴中の沃素及
び／又は二色性染料の濃度が経時的に変動するた
めに、煩雑な濃度管理を必要とすること、浸漬法
であるために任意のパターン状に偏光能を付与す
ることができないこと、一枚のフイルム内に複数
色の色調を有する多色偏光フイルムが得られない
こと、及び水溶液の廃液処理が煩雑であることな
どの欠点を有するものである。 However, in this conventional method, the concentration of iodine and/or dichroic dye in the water bath fluctuates over time, requiring complicated concentration control, and since it is a dipping method, it is difficult to create an arbitrary pattern. It has drawbacks such as the inability to impart polarizing ability to the polarizing ability, the inability to obtain a multicolor polarizing film having multiple color tones in one film, and the complicated treatment of waste liquid of the aqueous solution. be.
本発明はかかる従来技術の欠点を解決した新規
な偏光フイルムの製法を提供するもので、その要
旨とするところは、一軸延伸親水性高分子フイル
ムに、沃素及び／又は二色性染料を含有する溶液
を部分的に塗布乾燥した後、50〜85℃、85〜98％
R.Hで１〜15分間の条件で加熱加湿処理すること
にある。 The present invention provides a novel method for manufacturing a polarizing film that solves the drawbacks of the prior art, and its gist is that a uniaxially stretched hydrophilic polymer film contains iodine and/or a dichroic dye. After partially applying the solution and drying, 50-85℃, 85-98%
The process involves heating and humidifying at RH for 1 to 15 minutes.
本発明の実施に当つて使用される一軸延伸親水
性高分子フイルムとしては、概して３〜５倍に一
軸方向に延伸してなるポリビニルアルコール系フ
イルム、部分ホルマール化ポリビニルアルコール
系フイルム、エチレン−酢酸ビニル共重合体ケン
化物（EVOH）フイルムなどが使用されるが、
延伸前にフイルムにオルトホウ酸、メタホウ酸、
四ホウ酸またはその塩などのホウ酸類を含有させ
て延伸してなるフイルムは、フイルムの配合性が
良いので好ましいものである。 The uniaxially stretched hydrophilic polymer film used in the practice of the present invention is generally a polyvinyl alcohol film stretched 3 to 5 times in the uniaxial direction, a partially formalized polyvinyl alcohol film, and an ethylene-vinyl acetate film. Saponified copolymer (EVOH) films are used, but
Orthoboric acid, metaboric acid,
A film obtained by stretching a film containing a boric acid such as tetraboric acid or a salt thereof is preferred because the film has good blendability.
ホウ酸類をフイルムに含有させる方法として
は、ホウ酸類を溶解させた水溶液中に延伸前のフ
イルムを概して0.5〜５分間浸漬する方法、或い
は予め親水性高分子フイルムを作る段階でホウ酸
類を添加する方法などがある。 The method of incorporating boric acids into the film is to immerse the film before stretching in an aqueous solution containing boric acids for 0.5 to 5 minutes, or to add boric acids at the stage of preparing the hydrophilic polymer film in advance. There are methods.
このような一軸延伸親水性フイルム（ホウ酸類
含有フイルムを含む）には、沃素及び／又は二色
性染料を含有する溶液を緊張下で片面又は両面に
パターン（又は多色）状に塗布後風乾等して乾燥
し、次いで加熱加湿処理（条件は50〜85℃×85〜
98％R.H×１〜15分間である）することによつ
て、偏光特性に優れた沃素及び／又は二色性染料
系偏光フイルムが得られる。 Such uniaxially stretched hydrophilic films (including films containing boric acids) are coated with a solution containing iodine and/or dichroic dye on one or both sides under tension in a pattern (or multicolor) and then air-dried. dry, then heated and humidified (conditions are 50~85℃ x 85~
98% RH for 1 to 15 minutes), an iodine and/or dichroic dye-based polarizing film with excellent polarizing properties can be obtained.
また沃素及び／又は二色性染料を含む溶液に
は、溶液の粘度を調整するゲル化剤例えばアルギ
ン酸ナトリウムを適量配合して、溶液の粘度を50
ポイズ以上、好ましくは100〜500ポイズに調整し
ておくことは、パターン状の偏光フイルムを得る
場合、パターンを直線状で形成することができる
ので好ましいものである。 In addition, in solutions containing iodine and/or dichroic dyes, an appropriate amount of a gelling agent such as sodium alginate is added to adjust the viscosity of the solution, and the viscosity of the solution is adjusted to 50%.
It is preferable to adjust the temperature to 100 to 500 poise or more, preferably 100 to 500 poise, because when obtaining a patterned polarizing film, the pattern can be formed in a straight line.
また加熱加湿処理をするに際して、前述の如く
緊張下で行うのは、処理時に一軸延伸親水性高分
子フイルムが収縮するのを防止するために行うも
のであるが、例えば予め処理前の前記フイルムの
片面に、耐熱性良好なプラスチツクフイルムを接
着しておき、加熱加湿処理時に前記延伸フイルム
を装着しておき、加熱加湿処理時に前記延伸フイ
ルムが収縮しないようにしてから処理してもよ
い。上記プラスチツクフイルムとしては、ポリエ
ステル系フイルム、ポリアクリル系フイルム、ア
セテート系フイルムなどが挙げられる。 Furthermore, when performing the heating and humidifying treatment, the purpose of performing the heating and humidifying treatment under tension as described above is to prevent the uniaxially stretched hydrophilic polymer film from shrinking during the treatment. A plastic film with good heat resistance may be adhered to one side, and the stretched film may be attached during the heating and humidifying treatment to prevent the stretched film from shrinking during the heating and humidifying treatment. Examples of the plastic film include polyester film, polyacrylic film, and acetate film.
このようにして作られた偏光フイルムの片面又
は両面には、表面保護層としての光学的透明性を
有するプラスチツクフイルムなどが接着され、偏
光板とされる。 An optically transparent plastic film or the like as a surface protective layer is adhered to one or both sides of the polarizing film thus produced to form a polarizing plate.
本発明の製法は、以上の如く、一軸延伸親水性
高分子フイルムに、沃素及び／又は二色性染料を
含有する溶液を部分的に塗布乾燥し、加熱加湿処
理するものであるから、下記するような特徴を有
する。 As described above, the manufacturing method of the present invention involves partially applying a solution containing iodine and/or dichroic dye to a uniaxially stretched hydrophilic polymer film, drying it, and subjecting it to heating and humidification treatment. It has the following characteristics.
イ 塗布する溶液の濃度管理が簡単であり、従つ
て均一な偏光フイルムが得られる。B) It is easy to control the concentration of the solution to be applied, and therefore a uniform polarizing film can be obtained.
ロ 部分的に溶液を塗布乾燥することにより、沃
素及び／又は二色性染料が一旦固形分状態とな
り、これを加熱加湿して吸着配合させることに
より部分偏光フイルムが簡単に得られる。(b) By partially applying a solution and drying, the iodine and/or dichroic dye once becomes a solid content, and by heating and humidifying and adsorbing and blending this, a partially polarizing film can be easily obtained.
ハ 溶液を塗布乾燥することにより、沃素及び／
又は二色性染料が一旦固形分状態となり、従つ
て次に塗布乾燥される溶液との界面部分での混
じりがなく、これを加熱加湿して吸着配向させ
ることにより美麗な境界線を有する多色偏光フ
イルムが簡単に得られる。C. By applying and drying the solution, iodine and/or
Or, once the dichroic dye is in a solid state, there is no mixing at the interface with the solution that is then applied and dried, and by heating and humidifying it to adsorb and orient it, you can create multicolors with beautiful border lines. Polarizing film can be easily obtained.
ニ 後述の実施例からも明らかであるが、従来の
浸漬法に比して、良好な偏光特性を有する偏光
フイルムが得られる。D. As is clear from the examples described below, a polarizing film having better polarizing properties can be obtained compared to the conventional dipping method.
以下本発明の実施例を示す。文中％とあるのは
重量％を意味する。 Examples of the present invention will be shown below. % in the text means weight %.
実施例
オルトホウ酸３％を含む水溶液（液温30℃）
に、厚さ75μｍのポリビニルアルコール系フイル
ムを１分間浸漬後、４倍に延伸し、70℃で10分間
乾燥する。Example Aqueous solution containing 3% orthoboric acid (liquid temperature 30°C)
A polyvinyl alcohol film with a thickness of 75 μm was immersed in the solution for 1 minute, stretched 4 times, and dried at 70° C. for 10 minutes.
次にダイレクト・スカイブルー6Bを0.2％含す
水溶液を、緊張下にある前記一軸延伸ポリビニル
アルコールフイルムに部分的に塗布して風乾し、
さらに60℃×95％R.Hの条件下に５分間放置して
加熱加湿処理を行い、二色性染料系部分偏光フイ
ルムを得る。 Next, an aqueous solution containing 0.2% Direct Sky Blue 6B was partially applied to the uniaxially stretched polyvinyl alcohol film under tension and air-dried.
Further, the film was left to stand for 5 minutes at 60° C. and 95% RH for heating and humidification to obtain a dichroic dye-based partially polarized film.
このフイルムの染料吸着配合部分の透過率は40
％で、偏光度は93％であつた。 The transmittance of the dye-adsorbing blended part of this film is 40
%, and the degree of polarization was 93%.
比較例
厚さ75μｍのポリビニルアルコール系フイルム
を、３％のオルトホウ酸と１％のダイレクト・ス
カイブルー6Bを含有する水溶液（液温30℃）に
１分間浸漬後、４倍に延伸して加熱乾燥し、偏光
フイルムを得る。Comparative example A polyvinyl alcohol film with a thickness of 75 μm was immersed for 1 minute in an aqueous solution (30°C) containing 3% orthoboric acid and 1% Direct Sky Blue 6B, then stretched 4 times and dried by heating. and obtain a polarizing film.
このフイルムの透過率は40％で、偏光度は85％
であつた。 The transmittance of this film is 40% and the degree of polarization is 85%
It was hot.
Claims (1)
び／又は二色性染料を含有する溶液を全面又は部
分的に塗布した後、50〜85℃、85〜98％R.Hで１
〜15分間の条件で加熱加湿処理することを特徴と
する偏光フイルムの製法。1. After applying a solution containing iodine and/or dichroic dye to the entire surface or part of a uniaxially stretched hydrophilic polymer film,
A method for producing a polarizing film characterized by heating and humidifying the film for ~15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18485581A JPS5885405A (en) | 1981-11-17 | 1981-11-17 | Manufacture of polarizing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18485581A JPS5885405A (en) | 1981-11-17 | 1981-11-17 | Manufacture of polarizing film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5885405A JPS5885405A (en) | 1983-05-21 |
| JPH0338565B2 true JPH0338565B2 (en) | 1991-06-11 |
Family
ID=16160479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18485581A Granted JPS5885405A (en) | 1981-11-17 | 1981-11-17 | Manufacture of polarizing film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5885405A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370287C (en) * | 2005-02-02 | 2008-02-20 | 力特光电科技股份有限公司 | Method for instant monitoring dyeing solution composition change for polarized light plate process |
| KR20150086159A (en) * | 2014-01-17 | 2015-07-27 | 주식회사 엘지화학 | Preparing method for polarizer having locally depolarizied area, polarizer and polarizing plate manufactured by using the same |
| CN107533178B (en) * | 2015-04-20 | 2020-10-16 | 日本化药株式会社 | Polarizing element comprising a highly retardation film and a layer containing a dichroic dye laminated thereon, and display device provided with the polarizing element |
-
1981
- 1981-11-17 JP JP18485581A patent/JPS5885405A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5885405A (en) | 1983-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2400877A (en) | Optical device and method and manufacture thereof | |
| US2237567A (en) | Light polarizer and process of manufacturing the same | |
| JP2543748B2 (en) | Polarizing film and manufacturing method thereof | |
| US3051054A (en) | Light polarizing articles and method of making same | |
| JPS63311203A (en) | Production of polarizing film | |
| JPS58168020A (en) | Manufacture of partially polarizing film | |
| JPS59172610A (en) | Manufacture of polarizing film | |
| US4396642A (en) | Hydrolytically stabilized polarizer | |
| JP3505968B2 (en) | Manufacturing method of polarizing film | |
| JPH0338565B2 (en) | ||
| JPS58168019A (en) | Manufacture of partially colored polarizing film | |
| JP2018180022A (en) | Manufacturing method of polarizer | |
| JPS6136203B2 (en) | ||
| JPS6136206B2 (en) | ||
| JPS5995503A (en) | Manufacture of polarizing film | |
| JPS58168018A (en) | Manufacture of multicolored polarizing film | |
| JPS5850501A (en) | Polarizing plate | |
| JPH06313808A (en) | Manufacture of polarizing film | |
| JPH07333425A (en) | Production of polarizing plate | |
| JPS62240905A (en) | Polarizing film | |
| US2481189A (en) | Image-carrying element for lightpolarizing images | |
| JPH07134210A (en) | Production of polarizing film | |
| JPS6012367B2 (en) | Manufacturing method of polarizing film | |
| JPS6066205A (en) | Polarizing film | |
| JP3731757B2 (en) | Manufacturing method of polarizing plate |