Heat-activated adhesive sheet

An adhesive sheet and adhesive technology, applied in the direction of adhesive, film/sheet release liner, film/sheet adhesive, etc., can solve the problem of difficult filming, achieve low adhesive force and improve yield , the effect of high adhesive force

Inactive Publication Date: 2008-07-16
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this adhesive sheet is an adhesive sheet in which a thermal adhesive is coated on a substrate such as a nonwoven fabric, it has a problem that it is difficult to reduce the film thickness.

Method used

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  • Heat-activated adhesive sheet
  • Heat-activated adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 10 parts by weight of styrene-butadiene-styrene block copolymer (manufactured by Asahi Kasei Chemical Co., Ltd., Asapuren T430 (5 parts by weight), Asapuren T420 (5 parts by weight)), hydrogenated petroleum resin (Arakawa Chemical Industry Co., Ltd. ; Alcon M115) 10 parts by weight, hydrogenated petroleum resin (manufactured by HERCULES; Picotex #120) 2.5 parts by weight, bisphenol anti-aging agent (Ouchi Shinko Chemical Industry Co., Ltd.; Nokrac NS-6) 0.2 parts by weight, double 0.1 weight part of phenolic antiaging agent (Ouchi Xinxing Chemical Industry Co., Ltd.; ノクラック MB) is uniformly dissolved with 22 weight parts of toluene and 0.8 weight part of isopropanol, and the adjustment solid content is 50 weight % to obtain the heat-adhesive sheet. Solution of hot adhesive composition.

[0055] Then, the solution of the obtained thermal adhesive composition was applied to a substrate having a polyethylene terephthalate film (thickness: 75 μm), and a silicone-based releas...

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Abstract

Disclosed is a heat-activated adhesive sheet which includes a heat-activated adhesive layer, and two release liners arranged so as to sandwich and protect the heat-activated adhesive layer. One of the two release liners is a release liner containing a polyolefinic film as a base material, and the other is a release liner containing a polyester film as a base material. This heat-activated adhesive sheet has a transfer heat-activated adhesive layer, can thereby have a small thickness, is unlikely to suffer from "unintended separation", and is unlikely to cause lifting and delamination of release liners when the sheet is stored as a roll.

Description

technical field [0001] This invention relates to thermal adhesive sheets. Background technique [0002] Conventionally, an adhesive sheet using a pressure-sensitive adhesive or the like has been widely used for fixing electronic components or their peripheral devices in so-called "mobile phones" or the like, from the viewpoint of the uniformity of the adhesive layer. However, these pressure-sensitive adhesives require strong adhesion in order to obtain adhesion reliability, and thus have a problem of difficulty in positioning and repositioning of adherends during adhesion. In addition, there is a problem that the adhesion reliability itself is not sufficient depending on the site of use. [0003] On the other hand, an adhesive sheet using a heat-adhesive adhesive is known as an adhesive sheet capable of solving the above-mentioned problems (refer to Patent Document 1). However, since this adhesive sheet is an adhesive sheet in which a thermal adhesive is coated on a substr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J153/02C09J7/10
CPCH01L24/83C09J2423/005C09J7/0221C09J7/00C09J2203/326C09J2467/006C09J2201/61C09J2453/00C09J7/0225H01L2224/83C09J7/40C09J7/10Y10T428/1457Y10T428/2852Y10T428/1462Y10T428/2813Y10T428/1452Y10T428/14Y10T428/1476C09J2301/304C09J2301/124
Inventor 池田功一上田翼玉井弘宣
Owner NITTO DENKO CORP
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