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

A surface protection film, single-sided technology, applied in the direction of optical components, optics, film/sheet adhesive, etc., can solve the problems of adhesive mixed with air bubbles, surface protective film floating, and adhesive force reduction, etc. Reliable protection, no deterioration over time, anti-stripping static performance, and less pollution

Active Publication Date: 2020-06-19
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 treated with anti-glare for anti-glare, there will be a problem that the adhesive cannot follow the irregularities on the surface of the optical film and bubbles may be 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] 3.125 parts by weight of a long-chain alkyl-containing resin as a release agent (product name is "TessFine (Tessfine) 303", manufactured by Hitachi Chemical Co., Ltd.), 10 parts by weight of bis(fluorosulfonyl) Lithium amine 10% ethyl acetate solution, 96.875 parts by weight of toluene and ethyl acetate as a 50:50 mixed solvent, 0.09 parts by weight of catalyst (product name is "Dryer (ドライyaー) 900", manufactured by Hitachi Chemical Co., Ltd.) mixed Together and stirring and mixing, the coating material which forms the release agent layer of Example 1 was prepared. 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-ethylhexyl acrylate and 2-hydroxyethyl acrylate are c...

Embodiment 2

[0084] With 8.33 parts by weight of a release agent (product name is "Piroiru (ピーロイル) HT", manufactured by Yifangsha Oil Industry Co., Ltd.) with a long-chain alkyl-containing resin as the main component, 10 parts by weight of bis(trifluoromethanesulfonate A 10% ethyl acetate solution of lithium imide, 91.67 parts by weight of toluene and a 50:50 mixed solvent of ethyl acetate were mixed together and stirred to prepare the coating for forming the release agent layer of Example 2. Using a Meller rod, the paint for the release agent layer of Example 2 was applied 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 2. Except having used the release film of Example 2 instead of the release film of Example 1, it carried out similarly to Example 1, and obtained the protective film of Example 2. ...

Embodiment 3

[0086] 1.5 parts by weight of a release agent mainly composed of a long-chain alkyl group-containing resin (the product name is "Piroiru 1010S", manufactured by Yibangsha Oil Industry Co., Ltd.), 10 parts by weight of lithium bis(fluorosulfonyl)imide 10% ethyl acetate solution, 98.5 parts by weight of toluene, ethyl acetate and isopropanol at a ratio of 50:40:10 were mixed together and stirred to prepare the coating for forming the release agent layer of Example 3. Using a Meller rod, the paint for the release agent layer of Example 3 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 3 instead of the release film of Example 1, it carried out similarly to Example 1, and obtained the protective film of Example 3.

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Abstract

The present invention provides a surface protection film that can be used for an optical film having irregularities on the surface, has little contamination to an adherend, and has no time-dependent change in the low-contamination property of the adherend, and has no time-dependent deterioration A surface protection film with excellent anti-stripping static properties, and an optical component using the surface protection film. In this surface protection film, an adhesive layer (2) is formed on one side of a base film (1) made of a transparent resin, and a release agent layer (4) is bonded on the adhesive layer (2). ), wherein 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 resin containing a long-chain alkyl group The release agent as the main component and the antistatic agent that does not react with the release agent, the antistatic agent component is transferred from the release film (5) to the surface of the adhesive layer (2), reducing the amount of adhesive layer (2) The peeling static voltage when peeling off 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): B32B27/08B32B27/00C09J7/30C09J9/02C09J133/04G02B1/10
CPCB32B7/12B32B27/30C09J133/08G02B5/30
Inventor 小林弘幸春日充新见洋人木俣绘美子林益史
Owner FUJIMORI KOGYO CO LTD
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