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Surface protection film

A surface protection film and protective layer technology, which is applied in the direction of protective clothing, protective equipment, film/sheet adhesive, etc., can solve the problems of discoloration and expansion of the surface protection film, achieve excellent plasticizer resistance, and handle Excellent performance and good self-healing effect

Active Publication Date: 2020-01-07
BANDO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, various oils derived from cosmetics such as hand cream and sunscreen or food may adhere to the fingers, and various oils attached to the surface of the surface protection film from the fingers may penetrate into the inside of the surface protection film to cause surface damage. When the protective film discolors, swells, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] "Example 1"

[0116] Add 100 g of succinate polyol (manufactured by Tosoh Co., Ltd., trade name: ON-300), 10 g of trimethylolpropane, 32.6 g of xylylene diisocyanate (Mitsui Chemicals Co., Ltd. Made by the company, trade name: Takenate (Takenate) T500), and 50 ppm of an organotin compound were stirred and mixed to prepare a material composition (α ratio: 0.95).

[0117] A laminate obtained by laminating a silicon-treated PET film with a thickness of 75 μm (equivalent to a release film) / a silicon-based adhesive layer with a thickness of 50 μm / a PET film with a thickness of 100 μm (equivalent to a transparent base film) was used as As the first gap maintaining member, a silicon-treated PET film (equivalent to a release film) with a thickness of 125 μm is used as the second gap maintaining member, and a succinic acid-containing polyester-based polyester film having a thickness of 100 μm is produced by the above-mentioned molding method. The surface protection film laminat...

Embodiment 2

[0118] "Example 2"

[0119] Except having made 15 g of trimethylolpropane and 43.7 g of xylylene diisocyanate, it carried out similarly to Example 1, and obtained the surface protection film laminated body.

Embodiment 3

[0120] "Example 3"

[0121] Except having used 5 g of cyclohexanedimethanol instead of trimethylolpropane, and made 17.4 g of xylylene diisocyanate, it carried out similarly to Example 1, and obtained the surface protection film laminated body.

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Abstract

The present invention addresses the problem of providing a surface protection film which is resistant to discoloration, expansion, etc. due to the penetration of oils or plasticizers. To solve the problem, a surface protection film having a protective layer made of polyester-based polyurethane on the outermost surface thereof is provided.

Description

technical field [0001] The invention relates to a surface protection film for a transparent substrate used to protect the surface of a display. Background technique [0002] In electronic devices equipped with displays such as smartphones, tablet personal computers (PCs), and portable music players, a surface protection film may be attached to protect the transparent substrate on the surface of the display. Light transmission, non-coloring, scratch resistance, weather resistance, self-healing properties, etc. are required for surface protection films. In addition, in recent years, these electronic devices are generally operated through capacitive touch panels, and new demands have been placed on sliding properties, touch panel operability, and the like. [0003] Among such surface protection films, a surface protection film having excellent operability by a stylus pen, as Patent Document 1, the present applicant proposed a surface protection film in which polyether polyol a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25B32B27/40
CPCC09J7/25C09D175/06C08G18/7642C08G18/3206C08G18/3212C08G18/4238C08G18/664C08G18/6644B32B37/15B32B37/06B32B2307/748B32B7/12B32B27/281B32B2307/584B32B27/40B32B2307/412B32B2457/20B32B27/365B32B2250/04B32B2307/732B32B7/027B32B2307/30B32B2307/762B32B27/36B32B2307/712B32B2307/546B32B27/325B32B2307/7265B32B7/06B32B2571/00B32B27/26B32B27/08B32B38/004B32B2305/72B32B2307/714C08L75/06
Inventor 鎌田穣坂野一海
Owner BANDO CHEM IND LTD
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