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

A surface protection film, single-sided technology, used in optical components, optics, film/sheet adhesives, etc., can solve problems such as the inability of the adhesive to meet, the surface protection film floats, and the adhesive force is reduced, etc. To achieve the effect of excellent anti-peeling electrostatic performance, good wettability and reliable protection

Active Publication Date: 2020-04-28
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 that has been treated with anti-glare for anti-glare, there may be cases where the adhesive cannot follow (follow) the irregularities on the surface of the optical film, and air bubbles may be mixed in. Or, due to the reduction of the bonding area between the optical film and the adhesive, the adhesive force is reduced, and the surface protection film floats or peels off 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
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Effect test

Embodiment 1

[0084] With 5 weight parts of addition reaction type polysiloxane type release agent (product name is SRX-211, the content of release agent non-volatile matter is 30 weight %, manufactured by Dow Corning Toray Co., Ltd.), 5 parts by weight of 20% by weight of ethyl acetate solution of bis(fluorosulfonyl)imide lithium, 90 parts by weight of toluene and ethyl acetate as a 1:1 mixed solvent, and 0.05 parts by weight of platinum catalyst (the product name is SRX-212Catalyst, Dow Corning Toray Co., Ltd.) were mixed together and stirred and mixed to prepare the coating material for forming 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, 100 parts by weig...

Embodiment 2

[0086] Except having changed the antistatic agent into lithium bis(trifluoromethanesulfonyl)imide, it carried out similarly to Example 1, and obtained the protective film of Example 2.

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Abstract

The present invention provides a surface protective film having excellent peeling antistatic performance without degradation with time, which hardly produces foreign substances (adhesive lumps) caused by an adhesive even during cutting, has good affinity (wettability) for an optical film having irregularities on the surface thereof, has low contamination on an adherend, and provides low contamination on the adherend, which does not change even if the time elapses, and an optical component to which the surface protective film is bonded. In a surface protective film (10) in which a polyurethane adhesive layer (2) is formed on one surface of a base film (1) made of a transparent resin and a release film (5) having a release agent layer (4) is laminated on the adhesive layer (2), the release film (5) is formed by laminating the release agent layer (4) including a release agent and an antistatic agent, which does not react with the release agent, on one surface of a resin film (3), a component of the antistatic agent is transferred from the release film to the surface of the adhesive layer (2), and a peeling antistatic voltage when the adhesive layer (2) is peeled off 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, there is provided a film for optics that is difficult to cause foreign matter (block) caused by an adhesive during cutting and has good conformability (wettability) to the surface, and has good conformability (wettability) to A surface protection film that has little contamination of the adherend, and the low contamination of the adherend does not change over time, and also has excellent anti-peeling static electricity that does not deteriorate over time (does not deteriorate over time) High-performance surface protection film, and optical components bonded with the surface protection film. Background technique [0002] At present, when manufacturing and transporting optical films such as polarizing pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C09J7/40G02B1/10
CPCB32B7/12B32B27/30C09J133/00C09J175/04G02B5/30
Inventor 新见洋人小林弘幸春日充五十岚智美木俣绘美子林益史
Owner FUJIMORI KOGYO CO LTD
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