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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 elements, optics, film/sheet adhesives, etc., can solve the problems of air bubbles mixed in the adhesive layer, surface protection film separation, and reduced bonding area, etc. Reliable protection, less pollution, and production efficiency

Active Publication Date: 2016-09-14
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 surface protection 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

[0077] (manufacture of surface protection film)

[0078] Addition reaction type polysiloxane (product name is SRX-345 of 5 parts by weight, manufactured by Dow Corning Toray Co., Ltd.), 7.5 parts by weight of tri-n-butylmethylammonium bistrifluoromethanesulfonimide (FC -4400, 3M company (スリーエム company) manufactures) 10% ethyl acetate solution, the toluene of 95 parts by weight and ethyl acetate are the mixed solvent of 1:1, the platinum catalyst of 0.05 parts by weight (the product name is SRX-212, 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 ...

Embodiment 2

[0080] 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

[0082] Except that SRX-211 (product name) manufactured by Dow Corning Toray Co., Ltd. was used as the addition reaction polysiloxane of Example 1, the same operation was carried out as in Example 1, and the surface protection of Example 3 was obtained. membrane.

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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, causes little contamination on an adherend, maintains low contamination property on an adherend with time, and has excellent peeling antistatic performance while avoiding degradation with time, and to provide an optical component using the surface protective film.SOLUTION: A surface protective film 10 comprises: a substrate film 1 made of a transparent resin and having a pressure-sensitive adhesive layer 2 formed on one surface of the substrate film 1; and a release film 5 having a release agent layer 4 laminated on the pressure-sensitive adhesive layer 2. The release film 5 is obtained by depositing on one surface of a resin film 3, the release agent layer 4 comprising a release agent essentially comprising dimethyl polysiloxane and an antistatic agent that does not react with the release agent. A component of the antistatic agent is an ionic compound having a melting point of lower than 30°C. The component of the antistatic agent 7 is transferred from the release film 5 to the surface of the pressure-sensitive adhesive layer 2, which decreases a peeling charge voltage upon peeling the pressure-sensitive adhesive layer 2 from an 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, 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): C09J7/02G02B1/14
CPCB32B7/06G02B1/10
Inventor 小林弘幸春日充远藤佳子林益史
Owner FUJIMORI KOGYO CO LTD
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