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. 07, 2025
Filed:
Feb. 20, 2020
Applicant:
Treetotextile Ab, Bjärred, SE;
Inventors:
Assignee:
TREETOTEXTILE AB, Bjarred, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D 5/06 (2006.01); D01D 5/22 (2006.01); D01D 10/06 (2006.01); D01F 1/10 (2006.01); D01F 2/24 (2006.01);
U.S. Cl.
CPC ...
D01D 5/06 (2013.01); D01D 5/22 (2013.01); D01D 10/06 (2013.01); D01F 1/10 (2013.01); D01F 2/24 (2013.01);
Abstract
A process for forming a fiber tow, involves a wet spinning procedure comprising the steps of: dissolving cellulose pulp N in an alkaline aqueous solvent to form a cellulose spin dope composition, spinning the cellulose spin dope composition in a coagulation having a p H of more than 7.0, preferably a pH of at least 10, to produce a fiber tow, and passing the produced fiber tow through a sequence of consecutive stretching and washing steps in which the formed fiber tow is washed with a washing liquid by a counter-current flow washing procedure.