发明名称 |
Heat-peelable pressure-sensitive adhesive sheet and method for processing adherend using the heat-peelable pressure-sensitive adhesive sheet |
摘要 |
Disclosed is a heat-peelable pressure-sensitive adhesive sheet that can prevent the deformation of a pressure-sensitive adhesive layer due to pressurization in a pressing process and can be easily peeled off from the processed article. The heat-peelable pressure-sensitive adhesive sheet includes a substrate, and a heat-expandable pressure-sensitive adhesive layer arranged on or above at least one side of the substrate and containing a foaming agent, in which the heat-expandable pressure-sensitive adhesive layer has a shear modulus (23° C.) in an unfoamed state of 7×106 Pa or more. The heat-expandable pressure-sensitive adhesive layer preferably has a shear modulus (95° C.) in an unfoamed state of less than 7×106 Pa. The foaming agent in the heat-expandable pressure-sensitive adhesive layer preferably has a foam initiating temperature higher than 80° C.
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申请公布号 |
US7811647(B2) |
申请公布日期 |
2010.10.12 |
申请号 |
US20050592132 |
申请日期 |
2005.02.18 |
申请人 |
NITTO DENKO CORPORATION |
发明人 |
ARIMITSU YUKIO;MURATA AKIHISA;KISHIMOTO TOMOKO |
分类号 |
B32B9/00;B32B7/12;B32B15/04;B32B33/00;C09J5/00;C09J5/08;C09J7/02;C09J201/00;H01G4/12;H01G13/00;H01L21/68;H01L21/78 |
主分类号 |
B32B9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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