JPS62252494A - Method of forming adhesive layer for polarization film - Google Patents
Method of forming adhesive layer for polarization filmInfo
- Publication number
- JPS62252494A JPS62252494A JP61094769A JP9476986A JPS62252494A JP S62252494 A JPS62252494 A JP S62252494A JP 61094769 A JP61094769 A JP 61094769A JP 9476986 A JP9476986 A JP 9476986A JP S62252494 A JPS62252494 A JP S62252494A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- film
- adhesive layer
- peel
- release
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012790 adhesive layer Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000010287 polarization Effects 0.000 title abstract 4
- 239000000853 adhesive Substances 0.000 claims abstract description 47
- 230000001070 adhesive effect Effects 0.000 claims abstract description 47
- 238000003825 pressing Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 abstract description 3
- 244000043261 Hevea brasiliensis Species 0.000 abstract description 2
- 229920001477 hydrophilic polymer Polymers 0.000 abstract description 2
- 229920001600 hydrophobic polymer Polymers 0.000 abstract description 2
- 229920003052 natural elastomer Polymers 0.000 abstract description 2
- 229920001194 natural rubber Polymers 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract description 2
- 229920003002 synthetic resin Polymers 0.000 abstract description 2
- 239000000057 synthetic resin Substances 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は偏光フィルムに対する粘着層の形成方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming an adhesive layer on a polarizing film.
近年、偏光板は液晶表示袋ｆ（ＬＣＤ）をはじめとして
、幅広い用途に使用されているが、殆どの場合、ガラス
板等の支持基板に接着して使用されるので、一般には片
面もしくは両面に粘着剤を塗布した、いわゆる粘着型偏
光板が提供されている。In recent years, polarizing plates have been used in a wide range of applications, including liquid crystal display bags f (LCDs), but in most cases, they are glued to a support substrate such as a glass plate, so they are generally used on one or both sides. A so-called adhesive polarizing plate coated with an adhesive is provided.
而して、従来より粘着型偏光板を製造するには、二色性
色素或いはヨウ素を一方向に配列させて製造した偏光フ
ィルムに粘着剤を塗布、乾燥した後、離型フィルムを貼
り合わせる方法、或いは離型フィルムに粘着剤を塗布、
乾燥した後偏光フィルムを貼り合わせる方法等のいわゆ
る「コーティング法」が採用されている。Therefore, the conventional method for producing adhesive polarizing plates is to apply an adhesive to a polarizing film made by arranging dichroic dyes or iodine in one direction, dry it, and then attach a release film. , or apply adhesive to the release film,
A so-called "coating method" is used, such as a method in which a polarizing film is attached after drying.
然しなから、これらの方法では、多（の品種、銘柄が存
在する偏光フィルムの各種別、寸法等に応じて粘着剤の
塗布、乾燥工程を種々変更しなければならず、場合によ
ってはエージング（硬化剤による架橋硬化）という煩雑
で長い工程を経ねばならず、製造コストが高くなり、し
かもこの間に粘着剤もしくは偏光フィルムの変質、変形
等を引き起こし、品質的に問題が生じたり、ロスが多く
なる等の欠点があった。However, with these methods, it is necessary to make various changes to the adhesive application and drying processes depending on the type and size of the polarizing film, which is available in many varieties and brands, and in some cases, aging ( This requires a complicated and long process (cross-linking and curing with a hardening agent), which increases manufacturing costs.Moreover, during this process, the adhesive or polarizing film may deteriorate or deform, resulting in quality problems and high losses. There were drawbacks such as:
特に、コーティング中にゴミ等の異物が混入すると、一
般に軟らかい粘着剤層の表面が微小な凹凸となり、光学
的歪みの原因となったり、また、疎水性樹脂を基材とす
る偏光フィルムを有機溶剤系の粘着剤で直接コーティン
グしようとすると、溶剤によっては基材の変質を招（場
合もあり、利用可能な粘着剤の種類が限、定されるとい
う問題がある。In particular, when foreign matter such as dust gets mixed into the coating, the surface of the generally soft adhesive layer becomes minutely uneven, causing optical distortion. If an attempt is made to directly coat the base material with a type of adhesive, the problem is that depending on the solvent, the quality of the base material may change (sometimes), and the types of adhesives that can be used are limited.
本発明は上記の問題点を解決するためなされたものであ
り、その目的とするところは、簡便で経済的な、しかも
粘着剤層の変質、変形による光学的歪みのない優れた粘
着型偏光フィルムを製造する方法を提供することにある
。The present invention was made to solve the above problems, and its purpose is to provide an excellent adhesive polarizing film that is simple, economical, and free from optical distortion due to deterioration or deformation of the adhesive layer. The purpose is to provide a method for manufacturing.
本発明者らは、上記目的を達成するため、耐溶剤性と平
滑性に優れ、かつ互いに異なる剥離力の剥離面を有する
離型フィルム間に、予めクリーンな環境下で粘着剤を挟
み込んで粘着剤シートを作製し、必要に応じて一方の剥
離面で離型フィルムを粘着剤から引き剥がし、これを偏
光フィルムに圧着することにより、上記の問題点を解決
し得ることを見い出し、本発明を完成した。In order to achieve the above object, the present inventors sandwiched an adhesive in advance in a clean environment between release films that have excellent solvent resistance and smoothness and have release surfaces with different peeling forces. We have discovered that the above problems can be solved by preparing a release film, peeling off the release film from the adhesive on one peeling surface as necessary, and press-bonding this to a polarizing film, and have developed the present invention. completed.
すなわち、本発明は、離型フィルムの互いに剥離力の異
なる二つの剥離面間に粘着剤を層状に挟持せしめるステ
ップと、上記粘着剤層の一面から離型フィルムを引き剥
がして粘着剤層を露出せしめるステップと、上記露出し
た粘着剤層の表面を偏光フィルムに圧着するステップと
から成る偏光フィルムに対する粘着層の形成方法である
。That is, the present invention includes a step of sandwiching an adhesive in a layered manner between two release surfaces of a release film having mutually different peeling forces, and peeling off the release film from one surface of the adhesive layer to expose the adhesive layer. This is a method for forming an adhesive layer on a polarizing film, which comprises a step of pressing the exposed surface of the adhesive layer onto the polarizing film.
本発明でいう偏光フィルムとは、ポリビニルアルコール
系等の親水性高分子或いはポリオレフィン、ポリエステ
ル、ポリアミド系等の疎水性高分子等の基材中に、ヨウ
素或いは二色性色素等の光二色性物質を一方向に配列さ
せた状態で着色したフィルムであり、光の入射方向によ
り吸光度の異なる性質を有するフィルムである。通常は
、これらの高分子担持体に光二色性物質を含有させた後
、−軸方向に延伸する方法、或いは一軸方向に延伸した
後、同物質を吸着せしめる方法等により製造され、更に
必要に応じてこれらのフィルムの片面若しくは両面にセ
ルロース系若しくはアクリル系等の高分子フィルムを保
護の目的で貼り合わせる場合もある。このようにして作
製された偏光フィルムの厚さは通常０．０１〜ＩＩＩＩ
ｌｌ程度で、長尺ロール若しくは定尺板として提供され
ている。The polarizing film as used in the present invention refers to a base material such as a hydrophilic polymer such as polyvinyl alcohol, or a hydrophobic polymer such as polyolefin, polyester, or polyamide, and a photo dichroic substance such as iodine or a dichroic dye. This is a colored film in which the rays are arranged in one direction, and the absorbance differs depending on the direction of light incidence. Usually, these polymer carriers are manufactured by a method in which a photodichroic substance is contained in the carrier and then stretched in the -axial direction, or by a method in which the same substance is adsorbed after stretching in the uniaxial direction. Depending on the situation, a cellulose-based or acrylic-based polymer film may be attached to one or both sides of these films for the purpose of protection. The thickness of the polarizing film produced in this way is usually 0.01 to III.
It is provided as a long roll or a fixed length plate.
本発明で用いる粘着剤としては、天然ゴム系或いは合成
樹脂系のもので、常温で粘着性を有し透明なものであれ
ば任意のものが使用可能であるが、一般には透明で耐久
性のあるアクリル系、ウレタン系、エステル系、エポキ
シ系等の一液若しくは二液タイプの粘着剤が好適である
。これらは通常、有機溶剤或いは水に溶解若しくは分散
した形で市販されている。As the adhesive used in the present invention, any natural rubber-based or synthetic resin-based adhesive can be used as long as it is adhesive and transparent at room temperature, but in general, transparent and durable adhesives can be used. One-component or two-component adhesives such as certain acrylic, urethane, ester, and epoxy adhesives are suitable. These are usually commercially available in a form dissolved or dispersed in an organic solvent or water.
更にまた、本発明でいう離型フィルムとは、上記粘着剤
層を軽い力で剥がすことのできる剥離面を有するもので
あり、通常、紙或いは樹脂フィルムの表面をシリコン系
離型剤等で処理したものが用いられる。これらの離型剤
の種類或いは塗布、硬化条件により、上記粘着剤に対す
る剥離力を調整することが可能である。本発明に於ては
、互いに異なる剥離力の剥離面を有する離型フィルムを
使用するものであり、互いに剥離力の異なる二枚の離型
フィルム、或いは両面が互いに異なる剥離力となるよう
に表面処理した一枚の離型フィルムが用いられる。これ
ら離型フィルムの厚さは通常ｏ、ｏｏｓ〜０．５ＩＩＩ
Ｉ１１程度である。Furthermore, the release film referred to in the present invention has a release surface that allows the adhesive layer to be peeled off with a light force, and is usually prepared by treating the surface of a paper or resin film with a silicone release agent or the like. is used. It is possible to adjust the peeling force against the above-mentioned pressure-sensitive adhesive by changing the type of release agent, coating, and curing conditions. In the present invention, release films having release surfaces with different release forces are used. A piece of treated release film is used. The thickness of these release films is usually o, oos to 0.5III
It is about I11.
本発明に於て、上述の如き粘着剤及び離型フィルムを用
いて、互いに異なる剥離面で粘着剤を層状に挾持するに
は、例えば一枚の離型フィルムの剥離面上に粘着剤を塗
布、乾燥した後、異なる剥離力を有する他の一枚の離型
フィルムの剥離面を貼り合わせる方法、或いは表面と裏
面で異なる剥離力を有する一枚の離型フィルムの片面に
粘着剤を塗布、乾燥した後、巻取りロール体とする方法
が一般的に利用でき、更に必要に応じてエージングを行
なうことによって、通常厚さが５〜５０μｍの粘着剤層
を形成し得る。なお、望ましくは上記粘着剤の塗布、乾
燥作業は、クリーンな環境下で行なうのが良い。In the present invention, in order to sandwich the adhesive in layers on different release surfaces using the above-described adhesive and release film, for example, the adhesive is applied on the release surface of one release film. , After drying, bonding the release sides of another release film with different release forces, or applying an adhesive to one side of a release film with different release forces on the front and back sides, After drying, a method of winding up the material into a roll can be generally used, and by further aging if necessary, a pressure-sensitive adhesive layer having a thickness of usually 5 to 50 .mu.m can be formed. Note that it is preferable that the above-mentioned adhesive application and drying operations be performed in a clean environment.
次いで、偏光フィルムの片面若しくは両面に粘着剤層を
形成するには、通常、粘着剤シートの剥離力の小さい剥
離面より離型フィルムを剥がして、粘着剤層を露出させ
た後、これを公知のラミネータ（貼り合せ装置）により
一定の押圧力で偏光フィルム面に圧着すれば良い、その
場合の押圧力や温度等の条件を、使用する粘着剤及び偏
光フィルムの組成、厚さ等により適宜選択することによ
り機能及び外観上欠点のない粘着型偏光フィルムを製造
することができる。Next, in order to form an adhesive layer on one or both sides of the polarizing film, the release film is usually peeled off from the peeling surface of the adhesive sheet with a small peeling force to expose the adhesive layer, and then the adhesive layer is formed using a known method. It is sufficient to press the polarizing film onto the surface of the polarizing film using a laminator (bonding device) with a constant pressure. In that case, conditions such as pressure and temperature can be selected as appropriate depending on the composition, thickness, etc. of the adhesive and polarizing film used. By doing so, it is possible to produce an adhesive polarizing film that is free from defects in function and appearance.
上記の如き構成であると、粘着剤層は上記離型フィルム
の二つの剥離面間に挟まれてその表面が平滑化され、厚
さも均一となるので、一方の剥離面を引き剥がすことに
より露出した粘着剤層の表面に偏光フィルムを圧着せし
めることによって、少量多品種の偏光フィルムに対して
簡便がっ経済的に粘着層を形成でき、しかも粘着剤或い
は偏光フィルムの変質、変形等を惹起することなく、光
学的歪みのない良好な粘着型偏光フィルムを製造し得る
等々、多くの利点が得られるものである。With the above structure, the adhesive layer is sandwiched between the two release surfaces of the release film, and its surface is smoothed and has a uniform thickness, so it can be exposed by peeling off one release surface. By pressing the polarizing film onto the surface of the adhesive layer, the adhesive layer can be easily and economically formed on polarizing films manufactured in small quantities and in a wide variety of products, and it does not cause deterioration or deformation of the adhesive or the polarizing film. Many advantages can be obtained, such as being able to produce a good pressure-sensitive adhesive polarizing film without optical distortion.
以下、図面を参照しつ＼本発明の詳細を具体的に説明す
る。Hereinafter, details of the present invention will be specifically explained with reference to the drawings.
第１図及び第２図は本発明にか＼る方法の第一の実施形
態を示す説明図、第３図及び第４図は第二の実施形態を
示す説明図であり、図中、１は離型フィルム、２は粘着
剤、３は偏光フィルム、４は離型フィルムである。1 and 2 are explanatory views showing the first embodiment of the method according to the present invention, and FIGS. 3 and 4 are explanatory views showing the second embodiment. 2 is a release film, 2 is an adhesive, 3 is a polarizing film, and 4 is a release film.
実施例−１
第１図に示す如く、シリコン系剥離剤で両面処理したポ
リエステル系離型フィルム１ （厚さ５０μｍ）の内側
の表面１ａに、アクリル系溶剤タイプ粘着剤２（三井東
圧化学株式会社製“ＭＴ−ＴＡＣＫ５５０１Ｓ”）をク
リーンルーム中で通常のコーターにより塗布、乾燥し、
ロール状に巻き取って、４０℃で三日間エージング処理
した。Example 1 As shown in Figure 1, an acrylic solvent type adhesive 2 (Mitsui Toatsu Chemical Co., Ltd. company's "MT-TACK5501S") was applied using a regular coater in a clean room, dried,
It was wound up into a roll and aged at 40°C for three days.
上記の如くして作製した粘着剤層２の厚さは約３０μｍ
であり、粘着剤２と離型フィルム１の内面１ａとの剥離
力は２５ｇ ／ ２５＋ｗｍ、同外面１ｂとの剥離力は
５ ｇ ／ ２５ｎ＋ｍであった。The thickness of the adhesive layer 2 produced as described above is approximately 30 μm.
The peeling force between the adhesive 2 and the inner surface 1a of the release film 1 was 25 g/25+wm, and the peeling force between the adhesive 2 and the outer surface 1b was 5 g/25n+m.
この粘着剤挟持ロールを、第２図に示す如く、離型フィ
ルム１の外面１ｂが粘着剤２から剥離するよう巻き戻し
、露出した粘着剤の表面に、ポリエステル樹脂／二色性
染料系から成る偏光フィルム３（三井東圧化学株式会社
製“ＭＴ−Ｈ”）の片面をラミネータを用いて連続的に
貼り合せ、離型フィルム付きの粘着型偏光フィルムを製
造した。The adhesive holding roll is rewound so that the outer surface 1b of the release film 1 is peeled off from the adhesive 2, as shown in FIG. One side of polarizing film 3 (“MT-H” manufactured by Mitsui Toatsu Chemical Co., Ltd.) was laminated continuously using a laminator to produce an adhesive polarizing film with a release film.
同フィルムの粘着剤層の表面の変形は殆ど認められず、
機能及び外観上欠点のない粘着型偏光フィルムが得られ
た。Almost no deformation was observed on the surface of the adhesive layer of the same film.
An adhesive polarizing film with no defects in function or appearance was obtained.
実施例−２
第３図に示す如く、ポリエステル系離型フィルム１ （
藤森工業株式会社製“バイナシ−１−ＧＴ”）の剥離面
１ａに、アクリル系エマルジョンタイプ粘着剤２（三井
東圧化学株式会社製“ＭＴ−ＴＡＣＫ５０４０ＥＥ”）
をクリーンルーム中で公知のコーターを用いて塗布、乾
燥し、他の離型フィルム４ （Ｉｉｉ森工業株式会社製
“バイナシ−） ＤＷ ” ）の剥離面４ａを上記粘着
剤に貼り合わせた。同粘着剤層の厚さは約２０μｍとし
た。その場合の上記離型フィルムｌに対する剥離力は２
３ｇ ／ ２５ｍｍ、離型フィルム４に対する剥離力は
８ ｇ ／ ２５＋ｍであった。Example-2 As shown in Fig. 3, a polyester release film 1 (
Acrylic emulsion type adhesive 2 (“MT-TACK5040EE” manufactured by Mitsui Toatsu Chemical Co., Ltd.) was applied to the peeling surface 1a of Fujimori Kogyo Co., Ltd. “Bi-Nacy-1-GT”).
was coated using a known coater in a clean room and dried, and the release surface 4a of another release film 4 (Iii "BINACEY DW" manufactured by Mori Kogyo Co., Ltd.) was bonded to the above adhesive. The thickness of the adhesive layer was approximately 20 μm. In that case, the peeling force against the release film l is 2
3 g/25 mm, and the peeling force against release film 4 was 8 g/25+m.
この粘着剤シートより、離型フィルム４を引き剥がした
後、第４図に示す如（市販のポリビニルアルコール／ヨ
ウ素系偏光フィルム３（′バリライトＬＬ−８２−１８
″）をローラーで圧接し、剥離フィルム１の付着した粘
着型偏光フィルムを作製した。After peeling off the release film 4 from this adhesive sheet, as shown in FIG.
'') with a roller to produce an adhesive polarizing film to which release film 1 was attached.
同フィルムの外観は良好であり、光学的にも均−な特性
が得られた。The film had a good appearance and uniform optical properties.
本発明は叙上の如く構成されるので、本発明の方法によ
れば、少量多品種の偏光フィルムに対する粘着層の形成
を簡便かつ経済的に行なうことができ、しかも粘着剤或
いは偏光フィルムの変質、変形等を惹起することなく、
光学的歪みのない良好な粘着型偏光フィルムを製造し得
るものである。Since the present invention is constructed as described above, according to the method of the present invention, it is possible to easily and economically form an adhesive layer on a small quantity of a wide variety of polarizing films, and moreover, it is possible to form adhesive layers on polarizing films of various types in small quantities, and to prevent deterioration of the adhesive or the polarizing film. , without causing deformation etc.
A good adhesive polarizing film without optical distortion can be produced.
第１図及び第２図は本発明にか＼る方法の第一の実施形
態を示す説明図、第３図及び第４図は第二の実施形態を
示す説明図である。FIGS. 1 and 2 are explanatory views showing a first embodiment of the method according to the present invention, and FIGS. 3 and 4 are explanatory views showing a second embodiment.
Claims (1)
間に粘着剤を層状に挟持せしめるステップと、 上記粘着剤層の一面から離型フィルムを引き剥がして粘
着剤層を露出せしめるステップと、上記露出した粘着剤
層の表面を偏光フィルムに圧着するステップと、 から成る偏光フィルムに対する粘着層の形成方法。 ２）上記偏光フィルムが疎水性樹脂から成る特許請求の
範囲第１項記載の偏光フィルムに対する粘着層の形成方
法。 ３）上記離型フィルムが表裏で剥離力の異なる一枚のフ
ィルムである特許請求の範囲第１項記載の偏光フィルム
に対する粘着層の形成方法。 ４）上記離型フィルムが異種の二枚のフィルムである特
許請求の範囲第１項記載の偏光フィルムに対する粘着層
の形成方法。[Claims] 1) A step of sandwiching an adhesive in a layered manner between two release surfaces of a release film having different peeling forces, and peeling off the release film from one side of the adhesive layer to remove the adhesive layer. A method for forming an adhesive layer on a polarizing film, comprising: exposing the surface of the adhesive layer; and pressing the exposed surface of the adhesive layer onto a polarizing film. 2) The method for forming an adhesive layer on a polarizing film according to claim 1, wherein the polarizing film is made of a hydrophobic resin. 3) The method for forming an adhesive layer on a polarizing film according to claim 1, wherein the release film is a single film having different peeling forces on the front and back sides. 4) The method for forming an adhesive layer on a polarizing film according to claim 1, wherein the release film is two films of different types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61094769A JPS62252494A (en) | 1986-04-25 | 1986-04-25 | Method of forming adhesive layer for polarization film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61094769A JPS62252494A (en) | 1986-04-25 | 1986-04-25 | Method of forming adhesive layer for polarization film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62252494A true JPS62252494A (en) | 1987-11-04 |
Family
ID=14119303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61094769A Pending JPS62252494A (en) | 1986-04-25 | 1986-04-25 | Method of forming adhesive layer for polarization film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62252494A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004196939A (en) * | 2002-12-18 | 2004-07-15 | Hitachi Chem Co Ltd | Pressure-sensitive adhesive sheet with separator, optical member assembly and assembling method therefor |
| JP2005206717A (en) * | 2004-01-23 | 2005-08-04 | Hitachi Chem Co Ltd | Substrate-provided adhesive, manufacturing method of substrate-provided adhesive, and circuit connecting structure using the adhesive |
-
1986
- 1986-04-25 JP JP61094769A patent/JPS62252494A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004196939A (en) * | 2002-12-18 | 2004-07-15 | Hitachi Chem Co Ltd | Pressure-sensitive adhesive sheet with separator, optical member assembly and assembling method therefor |
| JP2005206717A (en) * | 2004-01-23 | 2005-08-04 | Hitachi Chem Co Ltd | Substrate-provided adhesive, manufacturing method of substrate-provided adhesive, and circuit connecting structure using the adhesive |
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