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:
Sep. 09, 2025
Filed:
Mar. 20, 2020
Applicant:
Billerudkorsnas Ab, Solna, SE;
Inventor:
Johan Magnusson, Frovi, SE;
Assignee:
BILLERUDKORSNAS AB, Solna, SE;
Primary Examiner:
Int. Cl.
CPC ...
D21D 1/26 (2006.01); D21H 11/02 (2006.01); D21H 11/18 (2006.01); D21H 27/30 (2006.01);
U.S. Cl.
CPC ...
D21D 1/26 (2013.01); D21H 11/02 (2013.01); D21H 11/18 (2013.01); D21H 27/30 (2013.01);
Abstract
There is provided a method of producing a highly refined pulp, comprising the steps of: providing a pulp; subjecting the pulp to a first conical refining step in at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, such as about 1.0 mm, and a groove width of 1.0-2.0 mm, such as 1.4-2.0 mm, such as about 1.6 mm; and subjecting the pulp from the first conical refining step to a second conical refining step in at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, such as about 1.0 mm, and a groove width of 0.8-1.6 mm, such as 1.0-1.5 mm, to obtain the highly refined pulp.