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:
Mar. 28, 2023
Filed:
Sep. 19, 2019
Applicant:
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 27/36 (2006.01); B32B 1/08 (2006.01); B32B 7/12 (2006.01); B32B 29/00 (2006.01); A47G 21/18 (2006.01);
U.S. Cl.
CPC ...
D21H 27/36 (2013.01); B32B 1/08 (2013.01); B32B 7/12 (2013.01); B32B 29/005 (2013.01); A47G 21/18 (2013.01); A47G 2400/10 (2013.01); B32B 2307/732 (2013.01); B32B 2597/00 (2013.01);
Abstract
An object is to provide a base paper for paper tubes that has lower environmental impact and is used for manufacturing of paper tubes offering excellent water resistance. As a solution, a base paper for paper tubes is provided, wherein: it has two or more but no more than five paper layers; the paper layers are bonded by a water-soluble or water-dispersible adhesive; and its elution rate is 2.0 percent or lower.