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

A surface protection film and peeling film technology, applied in optical components, optics, film/sheet adhesives, etc., can solve the problems of high peeling electrostatic voltage, difficult to stick FPR film, etc., to achieve improved productivity and less pollution , The effect of reducing the peeling electrostatic voltage

Active Publication Date: 2021-03-23
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the change of the constituent material of the polarizing plate, there was a problem that the peeling electrostatic voltage generated when peeling off the surface protection film was higher than when using a polarizing plate with a conventional structure
However, if the surface of the optical film of the polarizer is contaminated by the adhesive or antistatic agent used in the surface protection film, there is a problem that it is difficult to attach the FPR film

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

[0094] (Preparation of surface protection film)

[0095] 5 parts by weight of addition reaction silicone (manufactured by Dow Corning Toray Co., Ltd., trade name: SRX-345), 0.75 parts by weight of lithium bisfluorosulfonyl imide, 0.75 parts by weight of tetraethylene glycol di- 2-Ethylhexanoate, 95 parts by weight of a 1:1 mixed solvent of toluene and ethyl acetate, and 0.05 parts by weight of a platinum catalyst (manufactured by Dow Corning Toray Co., Ltd., trade name: SRX-212) were mixed and stirred Mixed to prepare a paint for forming the release agent layer of Example 1. On the surface of a polyethylene terephthalate resin film with a thickness of 38 μm, the paint forming the release agent layer of Example 1 was coated with a Meyer bar so that the thickness after drying was 0.2 μm, and hot air at 120° C. was used. Drying was performed for 1 minute in a circulating oven to obtain the release film of Example 1.

[0096] On the other hand, compared to the copolymer formed b...

Embodiment 2

[0099] The surface protection film of Example 2 was obtained in the same manner as in Example 1, except that the thickness after drying of the paint forming the release agent layer of Example 1 was 0.1 μm.

Embodiment 3

[0101] In addition to changing the addition reaction type silicone in Example 1 to Dow Corning Toray Co., Ltd. product name: SRX-211, and changing lithium bisfluorosulfonyl imide to lithium bistrifluoromethanesulfonyl imide, The surface protection film of Example 3 was obtained in the same manner as in Example 1.

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Abstract

The present invention provides a surface protection film and an optical component using the same, wherein the surface protection film can be bonded even to an optical film having unevenness on the surface, has little pollution to an adherend, and The low contamination of the adherend does not change over time, and it has excellent anti-peeling static performance that does not deteriorate over time. A surface protection film 10 is formed by forming an adhesive layer 2 on one surface of a base film 1 made of a transparent resin, and is bonded on the adhesive layer 2 via a release agent layer 4 A release film 5 of a release agent layer 4 is formed on one side of the resin film 3. The release agent layer 4 contains an alkali metal salt, an ester plasticizer containing at least one ether bond, a silicone release agent, and the release agent layer. The alkali metal salt component contained in 4 exists only on the surface of the adhesive layer 2 .

Description

technical field [0001] The present invention relates to a surface protection film bonded to the surface of an optical member (hereinafter, may be referred to as an optical film). More specifically, there are provided a surface protection film that has little contamination to an adherend and does not change over time in the staining property of the adherend, and an optical component using the surface protection film. In addition, the present invention also provides a method that can be used even if the constituent material of the polarizer as an optical component is changed (changing a TAC film to an acrylic film or a polyester film, or changing a water-based adhesive to an ultraviolet-curable adhesive). A surface protection film that effectively suppresses peeling static electricity generated when the surface protection film is peeled off, and an optical component using the surface protection film. [0002] In addition, the optical member in this invention means a polarizing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C09J7/40C09J7/30C09J133/08C09J11/06C09D5/20C08J7/04C09D183/04C09D7/63C08L67/02
CPCC08K5/435C08K2201/017C09D5/20C09J11/06C09J133/08C09J2433/00C09J2467/006C09J7/255C08J7/0427C09J2301/122C09J2301/408C09J5/04C09J7/40G02B5/3041G02B1/14
Inventor 小林弘幸新见洋人铃木千惠木俣绘美子林益史
Owner FUJIMORI KOGYO CO LTD
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