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Colored film and colored adhesive tape

A technology for colored films and adhesive tapes, applied in the direction of film/sheet-like adhesives, adhesives, etc., can solve the problem of peeling, difficulty in taking into account alcohol resistance and curl resistance. The problem of low film adhesion and other problems, to achieve the effect of suppressing curling and good alcohol resistance

Pending Publication Date: 2022-06-28
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the resin with high hardness is printed on the base material of the film, the problem of curling of the colored film and the problem of peeling due to low adhesion between the colored layer and the base film will occur.
Therefore, in a thin colored film and a colored pressure-sensitive adhesive tape including the colored film, it is difficult to simultaneously improve alcohol resistance, curl resistance, and interlayer adhesion of the colored film.

Method used

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  • Colored film and colored adhesive tape
  • Colored film and colored adhesive tape
  • Colored film and colored adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0142] Toray polyester film Lumirror 2F51 (thickness: 2.0 μm, tensile strength 3 N / 10 mm) was gravure-coated with black ink A so as to have a dry thickness of 3.0 μm, and aged at 40° C. for 1 day to obtain a black ink coating Cloth film A (colored film A). The reaction cured product of the polyester polyol resin A of the black ink A and the curing agent, that is, the glass transition temperature of the colored layer of the colored film A was 51.0°C. In addition, the glass transition temperature of a colored layer is a value measured using DSC in accordance with ISO 3146. The following is the same.

Embodiment 1-2

[0144] A black ink coating film B (colored film B) was obtained in the same manner as in Example 1-1, except that the black ink B was used instead of the black ink A. The reaction cured product of the polyester polyol resin B and the curing agent of the black ink B, that is, the glass transition temperature of the colored layer of the colored film B was 48.0°C.

Embodiment 1-3

[0146] A black ink coating film C (colored film C) was obtained in the same manner as in Example 1-1, except that the black ink C was used instead of the black ink A. The reaction cured product of the polyester polyol resin B and the curing agent of the black ink C, that is, the glass transition temperature of the colored layer of the colored film C was 62.0°C.

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Abstract

The purpose of the present invention is to provide a thin colored film having excellent alcohol resistance, curl resistance, and interlayer adhesion, and a colored adhesive tape provided with the colored film. The present invention provides a colored film having a resin film layer and a colored layer provided on one side surface of the resin film layer, the resin film layer having a thickness in the range of 1-12 [mu] m, the colored layer containing a cured resin and a coloring material and having a glass transition temperature in the range of 45-65 DEG C, the thickness of the colored layer is within the range of 1 [mu] m to 4 [mu] m.

Description

technical field [0001] The present invention relates to a thin colored film and a colored adhesive tape (the Japanese word for "adhesion" in Chinese is "adhesion") suitable for use in electronic equipment such as mobile phones and electronic notebooks, which are suitable for use in protecting circuits of electronic equipment. Background technique [0002] Adhesive tapes are used for fixing and protecting components in various industrial fields such as OA equipment and home appliances as bonding means with excellent workability and high bonding reliability. These OA equipments are required to be miniaturized and thinned while realizing various high functions, and are required in electronic terminals such as personal computers, digital video cameras, electronic notepads, mobile phones, smart phones, game consoles, and electronic books. The thickness of the main components is required to be thin, and the adhesive tape used for these protective purposes is also required to be th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/046C08L67/02C09J7/25
CPCC08J7/046C08J7/0427C09J7/255C08J2367/02C08J2475/06C09J2301/122C09J2203/326C09J2467/006
Inventor 白石奈奈山上晃今井克明
Owner DIC CORP
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