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. 20, 2020
Filed:
May. 24, 2013
Applicant:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Inventors:
Assignee:
HITACHI CHEMICAL COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 75/10 (2006.01); C09J 7/20 (2018.01);
U.S. Cl.
CPC ...
B65H 75/10 (2013.01); C09J 7/20 (2018.01);
Abstract
Provided is a winding core which has a cylindrical shape and on which an adhesive tape, formed by an adhesive layer formed on an elongated base film in the longitudinal direction of the base film, is wound as multiple layers, wherein the outer diameter of the winding core is a dimension in which a deviation amount of the adhesive layer in the circumferential direction of the winding core between adjacent inner and outer tape portions of the adhesive tape in the radial direction of the winding core becomes 55 mm or less when the adhesive tape is wound on the winding core.