Double sided adhesive tape

A double-sided, adhesive tape technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of difficulty in imparting water resistance, damage between foam substrate layers, and difficulty in achieving water resistance, etc., to achieve Effect of imparting waterproof function, preventing intrusion, and excellent waterproof function
CN101857780AActive Publication Date: 2010-10-13DIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DIC CORP
Publication Date
2010-10-13

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Abstract

A double sided adhesive tape is provided with adhesive layers on two surfaces of foam substrate. The interlayer strength of the foam substrate is more than 12N / cm, and 25% compressive strength is 30-170kPa. The adhesive layer is composed of an acrylic acid series composition which comprises the following components: acrylic acid series copolymer which comprises (methyl)acrylate with 4-12 carbon atoms and vinyl monomer with carboxyl as monomer component, and polymerized abietate series adhesive resin. According to the double sided adhesive tape, even when the rigid members are bonded with eachother, excellent sealing performance, reprocessing adaptability and repeeling performance between the double sided adhesive tape and the member being bonded can be realized. Furthermore water impregnating can be effectively prevented.
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Description

technical field

[0001] The present invention relates to a double-sided adhesive tape with a foam substrate as the core. Background technique

[0002] In portable electronic devices such as electronic notebooks, mobile phones, PHS, cameras, music players, and TVs, double-sided adhesive tapes are used for fixing various parts and modules, represented by the lamination of the protective panel of the information display part and the case. . In order to secure a competitive advantage in the market, various functions are pursued, one of which is the function of imparting water resistance.

[0003] As an adhesive tape for fixing parts of electronic devices, surface adhesion to a specific adherend is disclosed, for example, having a maximum value of loss tangent (tan δ) in the temperature range of -40 to -15°C. The strength is 19N / cm 2 The above-described adhesive layer is provided on both surfaces of a support body in a double-faced adhesive sheet (refer to Patent Document 1). ...

Claims

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