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:
Apr. 17, 2018
Filed:
Jul. 11, 2014
Nippon Paper Industries Co., Ltd., Kita-ku, Tokyo, JP;
Keiko Hashiguchi, Tokyo, JP;
Hirofumi Kondo, Tokyo, JP;
Hiroaki Noguchi, Tokyo, JP;
Yuji Abe, Kushiro, JP;
Satoshi Ishikawa, Kushiro, JP;
Yukio Shini, Kushiro, JP;
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Abstract
Clupak paper is manufactured using a gap-former paper-making machine equipped with a Clupak system, in such a way that its longitudinal tensile energy absorption index and lateral tensile energy absorption index as specified in JIS P8113 become 2.5 J/g or more and 1.0 J/g or more, respectively. The paper has excellent strength characteristics in both the longitudinal and lateral directions, especially in the longitudinal direction so that when the Clupak paper can be processed into a sack, the sack rarely breaks.