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:
Feb. 20, 2024
Filed:
Mar. 17, 2020
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Jujo Thermal Oy, Kauttua, FI;
Masaaki Fukunaga, Tokyo, JP;
Hiroshi Koyamoto, Tokyo, JP;
Yuri Oishi, Tokyo, JP;
Masatsugu Kato, Tokyo, JP;
Akio Miyajima, Tokyo, JP;
Masashi Okamoto, Kauttua, FI;
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
JUJO THERMAL OY, Kauttua, FI;
Abstract
An object is to provide a paper barrier material resistant to fractures due to water vapor expansion when heated. As a solution, a paper barrier material is provided, which is characterized in that it comprises a gas barrier layer, a seal layer, a paper base material, and a pigment coating layer, being stacked in this order, wherein the laminate consisting only of the paper base material and pigment coating layer has an air permeation resistance of 2,500 seconds or lower as measured based on JAPAN TAPPI No. 5-2: 2000.