Surface protection thin film and optical element bonded with the same

A technology for protecting films and optical components, applied in optical elements, film/sheet-like adhesives, optics, etc., can solve the problems of the corresponding unevenness of the adhesive layer, difficult adhesion, mixed air bubbles, etc., and achieve peeling. Low withstand voltage, improved yield, and stabilized effects

Active Publication Date: 2012-11-21
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this case, it is difficult to adjust the adhesion to a predetermined value
In addition, in an adherend with an anti-glare treatment on the surface of an optical film such as a polarizing plate that has unevenness, the deformation of the adhesive layer of the surface protection film cannot correspond to the unevenness of the surface, and the unevenness of the surface of the optical film air bubbles

Method used

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  • Surface protection thin film and optical element bonded with the same
  • Surface protection thin film and optical element bonded with the same
  • Surface protection thin film and optical element bonded with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (The making of the surface protection film of Example 1)

[0070] In order to form a surface resistivity of 1×10 13 For the first adhesive layer above [Ω / □], 3 parts by weight of Adhesive composition (a) was prepared using an isocyanate-based hardener.

[0071] In addition, in order to form a surface resistivity less than 1×10 13 For the second adhesive layer of [Ω / □], bromoalkyltrimethylamine chloride, which is a bromoalkyltrimethylamine salt, is mixed with the adhesive composition (a) as an antistatic agent (manufactured by Kao Corporation, trade name: ELECTROSTRIPA-QN) to prepare an adhesive composition (b). Here, the mixture was mixed at a ratio of 1 part by weight of bromoalkyltrimethylamine chloride with respect to 100 parts by weight of the adhesive composition (a). Here, the adhesive composition (a) was applied to one side of a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 38 μm, and the adhesive composition (a) was applied ...

Embodiment 2

[0073] (The making of the surface protective film of embodiment 2)

[0074] The adhesive composition (a) was laminated on one side of the base film so that the coating thickness of the dried adhesive composition (a) was 17 μm, and the adhesive composition (b) was laminated to make the dried adhesive composition (a) The coating thickness of the adhesive composition (b) was 3 micrometers. Except for this, the surface protection film of Example 2 was obtained in the same manner as in Example 1.

Embodiment 3

[0075] (The making of the surface protective film of embodiment 3)

[0076] Adhesive composition (a) and adhesive composition (b) were laminated on one side of the base film, and the coating thickness of adhesive composition (a) and adhesive composition (b) after drying A total of 10 μm is reached. Except for this, the surface protection film of Example 3 was obtained in the same manner as in Example 1.

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Abstract

The invention provides a surface protection thin film, which is, on one surface of a transparent substrate thin film, provided with a first bonding agent layer with the surface resistivity of more than 1*1013 (Omega / square) and a second bonding agent layer with the surface resistivity of lower than 1*1013 (Omega / square) in a sequential lamination.

Description

technical field [0001] The present invention relates to a surface protection film to be attached to the surface of optical components (hereinafter referred to as optical film) such as polarizing plates, retardation plates, and lens films for displays. More specifically, the present invention relates to a surface protection film having a low peeling static voltage when the surface protection film is peeled off, a time-dependent change in antistatic performance, and less contamination of an adherend, and an optical component using the same. [0002] This application claims priority to Japanese Patent Application No. 2011-112518 filed on May 19, 2011, and the content is incorporated herein. Background technique [0003] When manufacturing and transporting optical products such as displays using optical films such as polarizing plates, retardation plates, and lens films for displays, a surface protection film is attached to the surface of the optical film to prevent subsequent p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/00G02B1/10G02B5/30B32B27/00C09J11/04C09J11/06
CPCC09J7/20C09J11/00C09J133/04C09J2301/208C09J2301/312
Inventor 春日充小林弘幸饭沼佳子林益史
Owner FUJIMORI KOGYO CO LTD
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