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, 2020
Filed:
Jun. 09, 2016
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B65H 18/28 (2006.01);
U.S. Cl.
CPC ...
B65H 18/28 (2013.01);
Abstract
An inclination of an outer circumferential surface of a film roll with respect to a widthwise axis is restricted. The roll includes: an outer cylinder part having a material thickness that is smaller toward a negative side of a y-axis than it is toward a positive side of the y-axis; and a slit separator which is wound around an outer circumferential surface of the outer cylinder part and which has a thickness that is larger toward the negative side of the y-axis than it is toward the positive side of the y-axis.