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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.:

US 11713528 B1

PDFFull Text
Date of Patent:
Aug. 01, 2023

Filed:

Aug. 31, 2022

Textile recycling

Applicant:

Apani Systems Inc., Redmond, WA (US);

Inventors:

Emily Grace Robinson, Blaine, WA (US);

Scot E Land, Redmond, WA (US);

Assignee:

APANI SYSTEMS INC., Redmond, WA (US);

Attorney:

24HourIP, PLLC

Primary Examiner:

Leo B Tentoni

Int. Cl.
CPC ...
B01D 37/00 (2006.01); B01D 43/00 (2006.01); B07C 5/342 (2006.01); D01D 4/02 (2006.01); D01D 13/00 (2006.01); D01D 13/02 (2006.01); D01F 1/06 (2006.01); D01F 1/07 (2006.01); D01F 1/10 (2006.01); D01F 2/02 (2006.01); D21C 7/00 (2006.01); D21C 7/12 (2006.01); D06B 9/00 (2006.01); C08J 11/08 (2006.01); D01D 1/02 (2006.01); D01D 5/06 (2006.01); D01F 2/00 (2006.01); B07C 5/36 (2006.01);
U.S. Cl.
CPC ...
D06B 9/00 (2013.01); B07C 5/3422 (2013.01); B07C 5/361 (2013.01); C08J 11/08 (2013.01); D01D 1/02 (2013.01); D01D 5/06 (2013.01); D01F 2/00 (2013.01); C08J 2301/02 (2013.01); D10B 2201/22 (2013.01); Y02W 30/66 (2015.05);
Abstract

A textile recycling method receives textile-waste-to-be-recycled, sorts the waste to isolate cellulose-containing articles from non-cellulose-containing articles, and re-sizes at least some of the cellulose-containing articles to create feedstock. The feedstock is processed in a cellulose solvent reactor, which has at least one ionic liquid. The ionic liquid dissolves intermolecular cellulose bonds of the feedstock to create a spinning dope. Cellulose fibers dissolved in the cellulose-bearing spinning dope solution are extruded in a cellulose coagulation bath reservoir to reconstitute at least some of the cellulose fibers, and the reconstituted fibers are wet-spun to form a continuous cellulose thread that is commercially indistinguishable from virgin fiber thread. Synthetic fiber material is vacuum-extracted or mechanically extracted from the cellulose-bearing solution and recycled into a continuous synthetic thread. Original color of textile-waste-to-be-recycled can be retained or removed, and new color can be added.

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