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:
Jun. 23, 2015
Filed:
Mar. 19, 2007
Applicant:
Shinya Kurokawa, Gojo, JP;
Inventor:
Shinya Kurokawa, Gojo, JP;
Assignee:
Nippon Valqua Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 43/00 (2006.01); C08J 3/205 (2006.01); C08J 5/18 (2006.01); B29K 27/18 (2006.01); B29C 43/06 (2006.01); B29C 43/22 (2006.01); B29C 43/24 (2006.01); B29C 43/46 (2006.01); B29C 47/00 (2006.01); B29C 47/14 (2006.01); B29C 47/20 (2006.01); B29K 27/12 (2006.01); B29K 27/00 (2006.01); B29K 105/06 (2006.01); B29K 105/16 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29C 43/003 (2013.01); C08J 2327/18 (2013.01); B29K 2027/18 (2013.01); B29C 43/06 (2013.01); B29C 43/222 (2013.01); B29C 43/24 (2013.01); B29C 43/46 (2013.01); B29C 47/0021 (2013.01); B29C 47/14 (2013.01); B29C 47/20 (2013.01); B29K 2027/12 (2013.01); B29K 2027/16 (2013.01); B29K 2105/06 (2013.01); B29K 2105/16 (2013.01); B29K 2105/256 (2013.01); C08J 3/205 (2013.01); C08J 5/18 (2013.01); C08J 2327/12 (2013.01);
Abstract
A process for producing a fluororesin sheet containing a filler includes a step of rolling a sheet-forming resin composition including a fluororesin, a filler and a processing aid at a roll temperature of from 40 to 80° C. The processing aid includes at least 30% by mass of a petroleum hydrocarbon solvent having a fractionating temperature of not higher than 120° C. based on 100% by mass of the amount of the processing aid. The fluororesin sheet so produced provides high stress relaxation properties along with high hermetic sealing properties even when the content of the fluororesin is low and the content of the filler is high.