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

A surface protection film, a single-sided technology, applied in the direction of polarizing elements, adhesive types, chemical instruments and methods, etc., can solve the problem of reducing the bonding area between optical films and adhesives, adhesives mixed with air bubbles, and surface protection Film floating and other problems, to achieve the effect of no time-deteriorated anti-stripping static performance, reliable protection, and excellent anti-stripping static performance

Active Publication Date: 2020-03-03
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 having irregularities on the surface such as a polarizing plate that has been subjected to anti-glare treatment for anti-glare, there is a problem that the adhesive cannot follow the irregularities on the surface of the optical film and bubbles are mixed, 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
Comparison scheme
Effect test

Embodiment 1

[0082] With 3.125 parts by weight of a release agent (product name is "TessFine 303", manufactured by Hitachi Chemical Co., Ltd.) with a long-chain alkyl-containing resin as the main component, 0.5 parts by weight of tri-n-butylmethylammonium bis(trifluoromethanesulfonyl ) imine (FC-4400, manufactured by 3M Company), 96.875 parts by weight of toluene and ethyl acetate as a 50:50 mixed solvent, 0.09 parts by weight of catalyst (the product name is "Dryer (ドライヤー) 900" , manufactured by Hitachi Chemical Co., Ltd.) were mixed together and stirred and mixed to prepare the paint for forming the release agent layer of Example 1. Using a Meller rod, the coating material for the release agent layer of Example 1 was coated on the surface of a polyethylene terephthalate film having a thickness of 38 μm so that the thickness after drying was 0.2 μm, and It dried for 1 minute in the hot-air circulation oven of 120 degreeC, and obtained the peeling film of Example 1. On the other hand, 2-e...

Embodiment 2

[0084] With 1.5 parts by weight of a release agent (product name is "Piroiru 1010S", manufactured by Yibangsha Oil Industry Co., Ltd.) with a long-chain alkyl-containing resin as the main component, 0.5 parts by weight of tri-n-butylmethylammonium bis(trifluoromethyl) Sulfonyl)imide (FC-4400, manufactured by 3M Company), 98 parts by weight of toluene, ethyl acetate and isopropanol in a mixed solvent of 50:40:10 were mixed together and stirred to prepare The paint used to form the release agent layer of Example 2 was prepared. Using a Meller rod, the coating material for the release agent layer of Example 2 was coated on the surface of a polyethylene terephthalate film with a thickness of 38 μm so that the thickness after drying was 0.2 μm, and It dried for 1 minute in the hot-air circulation oven of 120 degreeC, and obtained the peeling film of Example 2. Except having used the release film of Example 2 instead of the release film of Example 1, it carried out similarly to Exa...

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Abstract

The present invention provides an optical film that can be used even with irregularities on the surface, has less contamination to the adherend, has no time-dependent change in the low-contamination property of the adherend, and has excellent peeling resistance that does not deteriorate over time A surface protection film with electrostatic properties and an optical part using the surface protection film. The surface protection film (10) has an adhesive layer (2) formed on one side of a base film (1) made of a transparent resin, and a release agent layer ( 4) The release film (5), the release film (5) is formed by laminating a release agent layer (4) on one side of the resin film (3), and the release agent layer (4) contains a long-chain alkyl-containing resin A release agent as the main component and an antistatic agent composed of an ionic compound that does not react with the release agent, the antistatic agent component transfers from the release film (5) to the surface of the adhesive layer (2), reducing the adhesion The peeling static voltage when the binder layer (2) is peeled from the adherend.

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, to provide a surface protection film with less contamination to an adherend, and further to provide a surface protection film that does not deteriorate over time (does not deteriorate with time) and has excellent anti-peeling electrostatic performance, and An optical part bonded with this surface protection film. 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 contam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/40C09D5/20C09D5/24C09J133/08B32B27/36B32B27/08
CPCB32B7/12B32B27/30C09J133/08G02B5/30
Inventor 小林弘幸新见洋人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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