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:
Oct. 02, 2018
Filed:
Aug. 22, 2017
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventor:
Atsushi Nakazawa, Niihama, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29C 55/12 (2006.01); H01M 2/14 (2006.01); B29K 105/04 (2006.01); B29K 105/00 (2006.01); B29K 23/00 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
H01M 2/145 (2013.01); B29C 55/12 (2013.01); B29K 2023/0683 (2013.01); B29K 2105/041 (2013.01); B29K 2105/256 (2013.01); B29L 2007/008 (2013.01);
Abstract
A film-stretching apparatus in accordance with an embodiment of the present invention includes a stretching furnace having (i) an entrance through which a material film is transferred into the stretching furnace and (ii) an exit through which the material film having been stretched is transferred out of the stretching furnace. An airflow in the entrance is controlled so as to be directed toward an inside of the stretching furnace. A gas in the stretching furnace is controlled so as to be discharged outside the stretching furnace.