The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2010
Filed:
Dec. 08, 2005
Tomoko Doi, Ibaraki, JP;
Daisuke Shimokawa, Ibaraki, JP;
Yukio Arimitsu, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A method of thermal adherend release, wherein a part of adherends adherent to a heat-peelable pressure-sensitive adhesive sheet having a heat-expandable layer containing a foaming agent are selectively released from the pressure-sensitive adhesive sheet by partly heating the heat-peelable pressure-sensitive adhesive sheet, wherein the method comprises previously heating a sticking site of an adherend to be released at a temperature at which the heat-expandable layer of the heat-peelable pressure-sensitive adhesive sheet does not expand and then heating the sticking site of the adherend in the heat-peelable pressure-sensitive adhesive sheet at a temperature at which the heat-expandable layer expands to thereby selectively releasing the adherend.