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. 11, 2025
Filed:
Dec. 18, 2020
Applicant:
Teijin Aramid B.v., Arnhem, NL;
Inventors:
Hanneke Boerstoel, Arnhem, NL;
Wido Nijenhuis, Huissen, NL;
Rene La Faille, Zwolle, NL;
Rasid Günes, Arnhem, NL;
Said Boudebah, Arnhem, NL;
Bert Gebben, Velp, NL;
Stan Maassen, Zeist, NL;
Naoya Komiya, Osaka, JP;
Assignee:
TEIJIN ARAMID B.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D 5/06 (2006.01); C08J 11/08 (2006.01); D01D 1/02 (2006.01); D01F 6/60 (2006.01); D01F 6/90 (2006.01); D01F 6/92 (2006.01); B29K 105/26 (2006.01);
U.S. Cl.
CPC ...
D01F 6/905 (2013.01); C08J 11/08 (2013.01); D01D 1/02 (2013.01); D01F 6/605 (2013.01); D01F 6/92 (2013.01); B29K 2105/26 (2013.01); C08J 2377/10 (2013.01); D10B 2331/021 (2013.01); D10B 2401/063 (2013.01); D10B 2501/04 (2013.01);
Abstract
A continuous process for the recycling of aramid fiber comprising the following steps: combining aramid fibrous material including non-continuous aramid fibers with sulfuric acid to obtain a spin dope comprising aramid, and processing the spin dope including aramid into a continuous aramid fiber. The invention also pertains to a continuous aramid fiber, preferably obtainable by said process, and to a multifilament yarn including the continuous aramid fiber.