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:
Dec. 05, 2023
Filed:
Dec. 14, 2020
Applicant:
International Paper Company, Memphis, TN (US);
Inventors:
Jyrki Tapio Jaakkola, Gainesville, GA (US);
Antti Heikkinen, Treasure Island, FL (US);
Assignee:
INTERNATIONAL PAPER COMPANY, Memphis, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21D 5/06 (2006.01); D21G 9/00 (2006.01); D21D 99/00 (2006.01); B03B 5/56 (2006.01); B03B 13/00 (2006.01);
U.S. Cl.
CPC ...
D21D 5/06 (2013.01); B03B 5/56 (2013.01); B03B 13/00 (2013.01); D21D 99/00 (2013.01); D21G 9/0018 (2013.01);
Abstract
A method for controlling a fiber fractionation system for fractionating an input material into a long fraction (LF) stream comprising LF fibers and a short fraction (SF) stream comprising SF fibers includes measuring an average LF fiber length at one or more locations post-fractionation, and maintaining the average LF fiber length within a target variability range by automatically altering a rotational speed of a rotor of the fiber fractionation system.