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. 05, 2021
Filed:
Oct. 11, 2018
Applicants:
Toppan Printing Co., Ltd., Toyko, JP;
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Inventors:
Assignees:
TOPPAN PRINTING CO., LTD., Tokyo, JP;
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D 5/56 (2006.01); D21H 19/34 (2006.01); D21H 19/84 (2006.01); D21H 11/18 (2006.01); B32B 27/00 (2006.01); B32B 23/06 (2006.01); B65D 65/40 (2006.01);
U.S. Cl.
CPC ...
B65D 5/563 (2013.01); B32B 23/06 (2013.01); B32B 27/00 (2013.01); B65D 65/40 (2013.01); D21H 11/18 (2013.01); D21H 19/34 (2013.01); D21H 19/84 (2013.01); B65D 2565/382 (2013.01);
Abstract
A barrier paper includes a paper base material and a barrier layer containing cellulose fibers formed on the paper base material, in which an integrated value from 10.0 μm to 500.0 μm, obtained from a volume-based particle size distribution diagram when a dispersion containing the cellulose fibers is measured by laser diffraction, is 30% or more.