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:
Nov. 14, 2023
Filed:
Nov. 03, 2020
Applicant:
Billerudkorsnas Ab, Solna, SE;
Inventor:
Fredrik Nordstrom, Karlstad, SE;
Assignee:
BillerudKorsnas AB, Solna, SE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D 65/40 (2006.01); B65D 81/38 (2006.01); D21H 27/10 (2006.01); D21H 27/40 (2006.01); D21F 3/02 (2006.01); D21F 11/12 (2006.01); D21H 11/02 (2006.01); B65D 85/34 (2006.01);
U.S. Cl.
CPC ...
B65D 65/403 (2013.01); B65D 81/386 (2013.01); B65D 85/34 (2013.01); D21F 3/0209 (2013.01); D21F 3/0218 (2013.01); D21F 11/12 (2013.01); D21H 11/02 (2013.01); D21H 27/10 (2013.01); D21H 27/40 (2013.01);
Abstract
There is provided a method of producing a containerboard, comprising the step of pressing a web formed from a pulp comprising NSSC pulp in an extended nip press, such as a shoe press, wherein the line load in the extended nip press is above 1200 kN/m. Further, there is provided a corrugated board comprising a liner and a fluting, wherein the fluting is formed from a pulp comprising NSSC pulp, the density of the fluting is above 725 kg/mand the geometric SCT index (ISO 9895) of the fluting is above 37 Nm/g.