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:
Jul. 21, 2020
Filed:
May. 31, 2019
Toppan Printing Co., Ltd., Tokyo, JP;
Yasuhiro Miyauchi, Tokyo, JP;
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Abstract
In a protective layer transfer sheet, a heat-resistant lubricating layer is provided on a first surface of a substrate, and a thermally transferable protective layer is provided on at least part of a second surface of the substrate. The thermally transferable protective layer is composed of a peeling layer and an adhesive layer. The peeling layer contains cellulose acetate propionate resin having a glass transition temperature (Tg) in the range of 140° C. or more and 150° C. or less, and a number average molecular weight (Mn) of 30,000 or less, and polyester resin having a number average molecular weight of 15,000 or more.