Double-sided adhesive sheet

An adhesive sheet, double-sided technology, applied in the direction of adhesive type, acid copolymer adhesive, film/sheet adhesive, etc., can solve problems such as insufficient and reduced adhesion

Inactive Publication Date: 2008-11-12
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as a countermeasure against the above-mentioned interlaminar damage problem, it is not sufficient to simply adopt a simple solution that reduces the adhesive force until no interlaminar damage occurs.

Method used

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  • Double-sided adhesive sheet
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] Hereinafter, several examples related to the present invention will be described, but the present invention is not limited to the examples described above. In addition, in the following description, "part" and "%" are mass basis unless otherwise indicated.

[0042]

[0043] In the reaction vessel that has condensation pipe, nitrogen inlet pipe, thermometer and stirrer, drop into 2,2'-azobis[N-(2-carboxyethyl)-2-methylpropionamidine] hydrate (initiator ) (product of Wako Pure Chemical Industries, Ltd., trade name "VA-057") 0.279 g and ion-exchanged water 100 g, and stirred for 1 hour while introducing nitrogen gas. The reaction system was kept at 60°C, and 29 parts of butyl acrylate, 67 parts of 2-ethylhexyl acrylate, 4 parts of acrylic acid, 3-methacryloxypropyltrimethoxy Add 0.02 parts of silane (manufactured by Shin-Etsu Chemical Co., Ltd., trade name "KBM-503"), 0.033 parts of dodecanethiol (chain transfer agent) and 2 parts of polyoxyethylene sodium lauryl sulfat...

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Abstract

A double-sided PSA sheet 11 comprises PSA layers 2 formed of a water-dispersed PSA composition and a non-woven fabric substrate 1 to support the PSA layers. The substrate 1 contains hemp as a fiber component and is processed with an impregnating agent selected from a group consisting of viscose and starches. The substrate 1 has a grammage of 7 g / m 2 to 17 g / m 2 . The sheet 11 provides excellent adhesive performance and can be removed without substrate failure. Therefore, it is suitable, for example, for fastening recyclable parts.

Description

technical field [0001] The present invention relates to the double-sided adhesiveness of an adhesive layer formed by using a water-dispersed adhesive (also called a pressure-sensitive adhesive, the same below) composition using a non-woven fabric as a base material adhesive sheet (double-sided pressure-sensitive adhesive sheet (double-sided pressure-sensitive adhesive sheet)). In particular, the present invention relates to a double-sided PSA sheet suitable for use as affixed to recycling components. [0002] This application claims priority based on Japanese Patent Application No. 2007-126461 filed on May 11, 2007, the entire contents of which are incorporated herein by reference. Background technique [0003] Double-sided PSA sheets based on non-woven fabrics (supports) are widely used in various industrial fields from home appliances to automobiles and OA equipment as joining means with good workability and high adhesive reliability. In addition, in recent years, in con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/02C09J7/21C09J7/38
CPCC09J2201/128C09J7/045C09J2400/263Y10T442/2754C09J7/048C09J2433/00C09J7/38C09J7/21C09J7/205C09J2301/124
Inventor 高桥亚纪子池谷真实
Owner NITTO DENKO CORP
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