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. 06, 2021
Filed:
Oct. 23, 2017
Applicants:
Nippon Paper Papylia Co., Ltd., Shizuoka, JP;
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Inventors:
Assignees:
NIPPON PAPER PAPYLIA CO., LTD, Shizuoka, JP;
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 13/06 (2006.01); D21H 19/12 (2006.01); D21H 27/00 (2006.01); B41M 5/41 (2006.01);
U.S. Cl.
CPC ...
B41M 5/41 (2013.01); D21H 13/06 (2013.01); D21H 19/12 (2013.01); D21H 27/00 (2013.01); D21H 27/004 (2013.01);
Abstract
A water-dispersible sheet is described having suppressed time degradation of the tacky adhesiveness of the tacky adhesive layer, while maintaining water dispersibility. The base paper of the water-dispersible sheet has a multilayer structure, including an inner layer which is not in contact with a tacky adhesive layer and a surface layer which is in contact with the tacky adhesive layer. The layers are independently mixtures of papermaking fibers and an alkalized fibrous carboxymethyl cellulose.