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Surface protection film and optical part bonded with the surface protection film

A surface protection film and single-sided technology, which is applied in the direction of optical components, optics, film/sheet adhesive, etc., can solve the problems of air bubbles mixed in the adhesive layer, reduced bonding area, and reduced adhesive force. Reliable protection, less pollution, and production efficiency are achieved

Active Publication Date: 2016-08-31
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when it is used for an optical film with irregularities on the surface such as a polarizing plate after anti-glare treatment to prevent glare, the adhesive layer cannot meet the irregularities on the surface of the optical film and bubbles are mixed, or the optical film and The bonding area of ​​the adhesive is reduced to reduce the adhesive force, and there will be problems of separation or peeling of the protective film during use

Method used

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  • Surface protection film and optical part bonded with the surface protection film
  • Surface protection film and optical part bonded with the surface protection film
  • Surface protection film and optical part bonded with the surface protection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] (manufacture of surface protection film)

[0081] Addition reaction polysiloxane (product name is SRX-345 of 5 parts by weight, manufactured by Dow Corning Toray Co., Ltd.), 10% ethyl acetate solution of lithium perchlorate of 7.5 parts by weight, 95 parts by weight Toluene and ethyl acetate as a 1:1 mixed solvent, 0.05 parts by weight of platinum catalyst (product name is SRX-212, manufactured by Dow Corning Toray Co., Ltd.) are mixed together and stirred and mixed, and prepared for forming Coating for the release agent layer of Example 1. Using a Meller rod, the paint for forming the release agent layer of Example 1 was applied to the surface of a polyethylene terephthalate film having a thickness of 38 μm so that the thickness after drying was 0.2 μm. , and dried in a hot air circulation oven at 120° C. for 1 minute to obtain the release film of Example 1. On the other hand, 30 parts by weight of an acrylate copolymer having a weight average molecular weight of 470...

Embodiment 2

[0083] Except having applied the paint for forming the release agent layer of Example 1 so that the thickness after drying might become 0.1 micrometer, it carried out similarly to Example 1, and obtained the surface protection film of Example 2.

Embodiment 3

[0085] Except that SRX-211 (product name) manufactured by Dow Corning Toray Co., Ltd. was used as the addition reaction polysiloxane of Example 1, and ethyl acetate of 10% lithium bis(trifluoromethanesulfonyl)imide was used. The surface protection film of Example 3 was obtained in the same manner as in Example 1, except that 10 parts by weight of the ester solution was used instead of 7.5 parts by weight of a 10% lithium perchlorate ethyl acetate solution.

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Abstract

PROBLEM TO BE SOLVED: To provide a surface protective film that can be used even for an optical film having a rugged surface, gives little contamination to an adherend and shows no change in low contamination property to an adherend with lapse of time, and that has excellent peeling antistatic performance without degradation with time, and to provide an optical component using the surface protective film.SOLUTION: A surface protective film 10 includes an adhesive layer 2 formed on one surface of a base film 1 comprising a resin having transparency, and a release film 5 having a release agent layer 4 laminated on the adhesive layer 2. The release film 5 includes the release agent layer 4 containing a release agent essentially comprising dimethyl polysiloxane and an antistatic agent that does not react with the release agent, layered on one surface of a resin film 3. As a component of the antistatic agent is transferred from the release film 5 to the surface of the adhesive layer 2, a peeling electrification voltage when the adhesive layer 2 is peeled from an adherend is reduced.

Description

technical field [0001] The present invention relates to a surface protection film bonded to the surface of optical components (hereinafter, sometimes referred to as "optical film") such as polarizing plates, retardation plates, and lens films for displays. More specifically, the present invention provides a surface protection film with less contamination to an adherend, a surface protection film having excellent anti-peeling static performance without deterioration over time, and a product bonded with the surface protection film. optics. Background technique [0002] At present, when manufacturing and transporting optical films such as polarizing plates, retardation plates, lens films for displays, anti-reflection films, hard coat films, transparent conductive films for touch panels, and optical products such as displays using them, A surface protective film is bonded to the surface of the optical film to prevent surface contamination and scratches in subsequent steps. In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09D183/04C09D7/12G02B1/10G02B5/30
CPCB32B7/06B32B7/12B32B27/08B32B2307/21C09J133/08C09J133/10G02B1/04G02B1/14
Inventor 小林弘幸春日充远藤佳子林益史
Owner FUJIMORI KOGYO CO LTD
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