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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 10052807 B1

PDFFull Text
Date of Patent:
Aug. 21, 2018

Filed:

Aug. 08, 2016

Fiber manufacturing method, non-woven fabric manufacturing method, and fiber manufacturing equipment

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Yukihiro Katai, Kanagawa, JP;

Shigehisa Sugiyama, Kanagawa, JP;

Seiji Kasahara, Kanagawa, JP;

Yasuhisa Shimoda, Kanagawa, JP;

Masahiro Esaki, Kanagawa, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorneys:

Edwards Neils, LLC

Jean C. Edwards, Esq.

Primary Examiner:

Mary Lynn F Theisen

Int. Cl.
CPC ...
D01D 5/06 (2006.01); D01D 5/11 (2006.01); D01F 2/28 (2006.01); D01F 13/02 (2006.01); D04H 1/4258 (2012.01); D04H 1/72 (2012.01); D04H 1/736 (2012.01); D21H 13/02 (2006.01); B29C 47/00 (2006.01); B29B 11/04 (2006.01); B29K 1/00 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
B29C 47/0021 (2013.01); B29B 11/04 (2013.01); B29C 47/0014 (2013.01); D01D 5/06 (2013.01); D01F 2/28 (2013.01); D01F 13/02 (2013.01); D04H 1/4258 (2013.01); D04H 1/72 (2013.01); D04H 1/736 (2013.01); B29K 2001/12 (2013.01); B29L 2007/008 (2013.01); D21H 13/02 (2013.01); Y02P 70/627 (2015.11);
Abstract

A fiber manufacturing method includes the following steps of: dissolving a polymer in a solvent to obtain a polymer solution; spraying the polymer solution into a liquid heated to a boiling point of the solvent or higher, and evaporating the solvent to precipitate a fibrous polymer in a sealed precipitation tank, the liquid being immiscible with the polymer and the solvent; conveying the precipitated fibrous polymer in a liquid from the precipitation tank; water-rinsing the fibrous polymer conveyed in the liquid in the conveying step in a sealed water-rinsing tank; conveying the water-rinsed fibrous polymer in a liquid from the water-rinsing tank; and cooling and condensing solvent gas that is generated in the spraying step and the water-rinsing step.

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