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:
Jan. 05, 2021
Filed:
Sep. 29, 2017
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Masashi Okamoto, Tokyo, JP;
Yuri Oishi, Tokyo, JP;
Masatsugu Kato, Tokyo, JP;
Masaaki Fukunaga, Tokyo, JP;
Akio Miyajima, Tokyo, JP;
Hiroshi Koyamoto, Tokyo, JP;
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Abstract
An object is to provide a paper barrier material having excellent gas barrier property as well as excellent water vapor barrier property, wherein such paper barrier material is suitable for packaging applications such as food packaging materials, containers, and cups. The means for achieving the object is to provide a paper barrier material characterized in that it meets the conditions in (1) to (3) below: (1) the water vapor permeability at 40±0.5° C. in temperature and 90±2% in relative humidity is 3 g/m·day or below; (2) the oxygen permeability at 23° C. in temperature and 0% in relative humidity is 3 ml/m·day·atm or below; and (3) the oxygen permeability at 23° C. in temperature and 85% in relative humidity is 3 ml/m·day·atm or below.