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. 31, 2023
Filed:
Mar. 23, 2020
Applicant:
Nippon Paper Papylia Co., Ltd., Fuji, JP;
Inventors:
Masaki Kishimoto, Tokyo, JP;
Yoshiaki Ishino, Tokyo, JP;
Assignee:
NIPPON PAPER PAPYLIA CO., LTD., Fuji, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 27/38 (2006.01); C09J 7/29 (2018.01); B32B 29/00 (2006.01); B32B 29/06 (2006.01); D21H 19/12 (2006.01); G09F 3/02 (2006.01); G09F 3/10 (2006.01);
U.S. Cl.
CPC ...
D21H 27/38 (2013.01); B32B 29/005 (2013.01); B32B 29/06 (2013.01); C09J 7/29 (2018.01); D21H 19/12 (2013.01); G09F 3/02 (2013.01); G09F 3/10 (2013.01); B32B 2405/00 (2013.01); C09J 2203/334 (2013.01); C09J 2301/162 (2020.08); C09J 2400/283 (2013.01);
Abstract
An object is to provide a water-dispersible paper that exhibits excellent dispersibility in water. As a solution, a water-dispersible paper is provided, which has: a base paper that has a bulky layer containing 10% by weight or higher of a softwood pulp with a lumen width (l) to fiber diameter (D) ratio (l/D) of 0.60 or lower on average; and a water-soluble polymer impregnated into the base paper.