JP2003342386A - Release film - Google Patents
Release filmInfo
- Publication number
- JP2003342386A JP2003342386A JP2002155146A JP2002155146A JP2003342386A JP 2003342386 A JP2003342386 A JP 2003342386A JP 2002155146 A JP2002155146 A JP 2002155146A JP 2002155146 A JP2002155146 A JP 2002155146A JP 2003342386 A JP2003342386 A JP 2003342386A
- Authority
- JP
- Japan
- Prior art keywords
- release film
- resin
- jis
- durometer hardness
- film
- 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
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Polarising Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明は粘着フィルムや、粘着剤面
に使用される離型フィルムに関する。離型フィルムは、
液晶ディスプレイの表面保護フィルムの粘着剤面、光学
部品の粘着剤面、光学部品を粘着担持する粘着フィルム
等に好適に使用することができる。TECHNICAL FIELD OF THE INVENTION The present invention relates to an adhesive film and a release film used for the adhesive surface. The release film is
It can be suitably used for a pressure-sensitive adhesive surface of a surface protective film of a liquid crystal display, a pressure-sensitive adhesive surface of an optical component, a pressure-sensitive adhesive film for supporting an optical component.
【０００２】[0002]
【従来の技術】粘着剤面や粘着フィルムに使用される離
型フィルムにはポリエチレンテレフタレート樹脂単体、
あるいは、ポリエチレン樹脂単体からなるフィルムに、
必要に応じシリコーン樹脂をコーティングしたフィルム
が使用されている。これらには例えば特開平１１−３４
８１８６号や特許第３０３１５２０号、特開２００１−
２７２５４０号がある。2. Description of the Related Art Polyethylene terephthalate resin alone is used as a release film used for adhesive surfaces and adhesive films.
Alternatively, a film made of polyethylene resin alone,
A film coated with a silicone resin as needed is used. These include, for example, JP-A-11-34.
No. 8186, Japanese Patent No. 3031520, and Japanese Patent Laid-Open No. 2001-2001
There is 272540.
【０００３】[0003]
【発明が解決しようとする問題】本発明は、粘着剤面と
離型フィルムの間に異物が混入した場合、異物周辺のエ
ア噛みが小さいため、異物が目立たず、透明性、ハンド
リング性のよい離型フィルムを提供するものである。According to the present invention, when foreign matter is mixed between the pressure-sensitive adhesive surface and the release film, air entrapment around the foreign matter is small, so that the foreign matter is not conspicuous and has good transparency and handling property. A release film is provided.
【０００４】[0004]
【問題を解決するための手段】本発明は、ＪＩＳ Ｋ
７２１５によるデューロメータ硬さがＤ６０以下の樹脂
を用いた離型フィルムである。The present invention is based on JIS K
It is a release film using a resin having a durometer hardness according to 7215 of D60 or less.
【０００５】[0005]
【発明の実施の形態】ＪＩＳ Ｋ ７２１５によるデュ
ーロメータ硬さがＤ６０以下の樹脂としては、例えば、
低密度ポリエチレン、直鎖状低密度ポリエチレン、超低
密度ポリエチレン、アイオノマー、エチレン酢酸ビニル
コポリマーなどが好適に使用できる。ＪＩＳ Ｋ ７２
１５によるデューロメータ硬さがＤ６０以下の樹脂から
なる層の厚みは、混入する異物の大きさにより変更する
ことができる。厚みは１〜５０μｍの範囲好適に使用で
きる。薄いと異物混入によるエア噛みの効果が低下し、
厚いと透明性の低下につながる。光学部品用途に使用す
る場合離型フィルム全体での全光透過率は８０％以上、
好ましくは８５％、より好ましくは９０％以上である。
透明性が高いと、保護フィルムを貼ったまま光学部品の
検査をする上で好ましい。BEST MODE FOR CARRYING OUT THE INVENTION A resin having a durometer hardness of D60 or less according to JIS K 7215 is, for example,
Low density polyethylene, linear low density polyethylene, ultra low density polyethylene, ionomer, ethylene vinyl acetate copolymer and the like can be preferably used. JIS K 72
The thickness of the layer made of resin having a durometer hardness of D60 or less according to No. 15 can be changed depending on the size of the foreign matter to be mixed. The thickness is preferably in the range of 1 to 50 μm. If it is thin, the effect of air entrapment due to foreign matter is reduced,
If it is thick, it leads to poor transparency. When used for optical parts, the total light transmittance of the release film is 80% or more.
It is preferably 85%, more preferably 90% or more.
High transparency is preferable for inspecting optical components with the protective film attached.
【０００６】ＪＩＳ Ｋ ７２１５によるデューロメー
タ硬さがＤ６０以下の樹脂には別の樹脂からなる層を積
層することができる。そのような樹脂としては、例え
ば、ポリエチレンテレフタレート、ポリプロピレン、ポ
リスチレン、ポリカーボネート、ポリメチルメタクリレ
ート、ポリアミド樹脂などを好適に使用することができ
る。A layer made of another resin can be laminated on the resin having a durometer hardness of D60 or less according to JIS K7215. As such a resin, for example, polyethylene terephthalate, polypropylene, polystyrene, polycarbonate, polymethylmethacrylate, polyamide resin and the like can be preferably used.
【０００７】離型フィルムの製造方法には特に限定され
ない。押し出しコーティングする方法、熱ラミネーショ
ンする方法、共押出する方法、接着剤層を設けて貼合す
る方法などが挙げられる。The method for producing the release film is not particularly limited. Examples thereof include extrusion coating, heat lamination, coextrusion, and a method of providing an adhesive layer and bonding.
【０００８】[0008]
【実施例】実施例１
住友化学工業社製超低密度ポリエチレン樹脂スミカセン
Ｆ４１２−１（デューロメータ硬さ：Ｄ５５）を３０μ
ｍ厚のフィルムを作成した。Examples Example 1 Sumitomo Chemical Co., Ltd. ultra low density polyethylene resin Sumikasen F412-1 (durometer hardness: D55) 30 μm
An m-thick film was made.
【０００９】実施例２
ポリエチレンテレフタレート樹脂の層として２５μｍ厚
のフィルム（Ｓ、帝人・デュポン社製）を使用し、この
フィルムにウレタン系のアンカーコート剤を介して、住
友化学工業社製超低密度ポリエチレン樹脂エクセレンＶ
Ｌ４００（デューロメータ硬さ：Ｄ４２）を３０μｍの
厚みになるように、３３０℃で押出コーティングし離型
フィルムを作成した。Example 2 A 25 μm-thick film (S, manufactured by Teijin DuPont) was used as a layer of polyethylene terephthalate resin, and an ultra-low density manufactured by Sumitomo Chemical Co., Ltd. was applied to this film through a urethane anchor coating agent. Polyethylene resin Excellen V
L400 (durometer hardness: D42) was extrusion coated at 330 ° C. to have a thickness of 30 μm to prepare a release film.
【００１０】比較例１
ポリエチレンテレフタレート樹脂からなる２５μｍ厚の
離型フィルムＥ７００２（東洋紡績社製）を用いた。Comparative Example 1 A 25 μm thick release film E7002 (manufactured by Toyobo Co., Ltd.) made of polyethylene terephthalate resin was used.
【００１１】（エア噛みの大きさの測定）３８μｍ厚の
ポリエチレンテレフタレート樹脂フィルム（ＳＬ、帝人
・デュポン社製）に、アクリル系粘着剤（ＳＫ１４２
５、綜研化学社製）に硬化剤（Ｌ−４５、綜研化学社
製）を０．３３重量部混ぜたものをコンマコーターを用
いて塗工し、１００℃で１分乾燥した粘着剤面に、粒径
１０μｍのガラスビーズを散布し、その上から粘着剤面
に上記各離型フィルムを張り合わせた。このときのエア
噛みの長径を光学顕微鏡で測定した。１０箇所のエア噛
みの平均値で評価した。(Measurement of air bite size) A 38 μm thick polyethylene terephthalate resin film (SL, made by Teijin DuPont) is coated with an acrylic adhesive (SK142).
5. A mixture of 0.33 parts by weight of a curing agent (L-45, manufactured by Soken Chemical Industry Co., Ltd.) in (5, manufactured by Soken Chemical Industry Co., Ltd.) was applied using a comma coater, and the adhesive surface was dried at 100 ° C. for 1 minute. Then, glass beads having a particle diameter of 10 μm were scattered, and the above release films were attached to the adhesive surface from above. The major axis of the air bite at this time was measured with an optical microscope. The average value of air bites at 10 points was evaluated.
【００１２】[0012]
【表１】 [Table 1]
【００１３】実施例の離型フィルムはポリエチレンテレ
フタレート樹脂単独のフィルムに比べエア噛みが小さ
い。実施例１、２において粘着剤層と剥離フィルムとの
間に異物が挟まった場合の異物周辺にできるエア噛みが
小さく、仮に異物が混入した場合でも、目視しにくい。The release film of the embodiment has less air entrapment than a film made of polyethylene terephthalate resin alone. When foreign matter is sandwiched between the pressure-sensitive adhesive layer and the release film in Examples 1 and 2, air entrapment around the foreign matter is small, and even if foreign matter is mixed in, it is difficult to see.
【００１４】[0014]
【発明の効果】本発明の離型フィルムはポリエチレンテ
レフタレート樹脂単独のフィルムに比べエア噛みが小さ
く、特に液晶ディスプレイの表面保護フィルムの粘着剤
面に使用される離型フィルムや、液晶ディスプレイ等で
使用される光学部品の粘着剤面に使用される離型フィル
ム、光学部品を粘着担持する粘着フィルムの離型フィル
ム等に好適に使用することができる。EFFECTS OF THE INVENTION The release film of the present invention has less air entrapment than a film of polyethylene terephthalate resin alone, and is particularly used in a release film used for an adhesive surface of a surface protective film of a liquid crystal display, a liquid crystal display and the like. It can be suitably used for a release film used for the pressure-sensitive adhesive surface of an optical component, a release film for an adhesive film that carries an optical component by adhesion, and the like.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2H049 BA02 BB54 4F071 AA15 AA18 AA68 AF25 AF30 AH12 AH16 BB06 BC01 BC12 4F100 AK01A AK01B AK06 AK42B BA02 BA07 BA15 GB90 JK12A JL14 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 2H049 BA02 BB54 4F071 AA15 AA18 AA68 AF25 AF30 AH12 AH16 BB06 BC01 BC12 4F100 AK01A AK01B AK06 AK42B BA02 BA07 BA15 GB90 JK12A JL14
Claims (6)
タ硬さがＤ６０以下の樹脂からなる離型フィルム。1. A release film made of a resin having a durometer hardness of D60 or less according to JIS K7215.
タ硬さがＤ６０以下の樹脂が最外層に積層された離型フ
ィルム。2. A release film in which a resin having a durometer hardness of D60 or less according to JIS K 7215 is laminated on the outermost layer.
タ硬さがＤ６０以下の樹脂とポリエチレンテレフタレー
ト樹脂が積層された離型フィルム。3. A release film in which a resin having a durometer hardness of D60 or less according to JIS K 7215 and a polyethylene terephthalate resin are laminated.
のいずれか一項に記載の離型フィルム。4. The mold release process according to claim 1, wherein
The release film according to any one of 1.
載の離型フィルムを用いた保護フィルム。5. A protective film using the release film according to any one of claims 1 to 4.
載の離型フィルムを用いた偏光板。6. A polarizing plate using the release film according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002155146A JP2003342386A (en) | 2002-05-29 | 2002-05-29 | Release film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002155146A JP2003342386A (en) | 2002-05-29 | 2002-05-29 | Release film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003342386A true JP2003342386A (en) | 2003-12-03 |
Family
ID=29771733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002155146A Pending JP2003342386A (en) | 2002-05-29 | 2002-05-29 | Release film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003342386A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007069330A1 (en) * | 2005-12-16 | 2007-06-21 | Nichiban Co., Ltd. | Tipping film |
-
2002
- 2002-05-29 JP JP2002155146A patent/JP2003342386A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007069330A1 (en) * | 2005-12-16 | 2007-06-21 | Nichiban Co., Ltd. | Tipping film |
| US9586388B2 (en) | 2005-12-16 | 2017-03-07 | Nichiban Co., Ltd. | Chip-resistant film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050506 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070516 |
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| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070522 |
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| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20070925 |