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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 11598029 B1

PDFFull Text
Date of Patent:
Mar. 07, 2023

Filed:

Feb. 19, 2020

Method for manufacturing oxidized fiber bundle, method for manufacturing carbon fiber bundle, and joining apparatus

Applicant:

Teijin Limited, Osaka, JP;

Inventors:

Yosuke Nakamura, Osaka, JP;

Fumio Akiyama, Osaka, JP;

Assignee:

TEIJIN LIMITED, Osaka, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Leo B Tentoni

Int. Cl.
CPC ...
D01F 9/14 (2006.01); D01F 9/22 (2006.01); D02J 1/08 (2006.01); D01F 6/18 (2006.01); D02J 13/00 (2006.01); D06M 11/78 (2006.01); B29C 65/00 (2006.01); B29C 65/78 (2006.01); B65H 69/06 (2006.01); D01F 9/32 (2006.01); D06M 101/28 (2006.01); D06M 101/40 (2006.01);
U.S. Cl.
CPC ...
D02J 1/08 (2013.01); B29C 65/7832 (2013.01); B29C 66/0242 (2013.01); B29C 66/69 (2013.01); B29C 66/72141 (2013.01); B65H 69/06 (2013.01); B65H 69/061 (2013.01); B65H 69/063 (2013.01); B65H 69/066 (2013.01); D01F 6/18 (2013.01); D01F 9/225 (2013.01); D02J 13/00 (2013.01); D06M 11/78 (2013.01); B65H 2701/314 (2013.01); D01F 9/328 (2013.01); D06M 2101/28 (2013.01); D06M 2101/40 (2013.01);
Abstract

A manufacturing method and an apparatus enable high productivity. A method for manufacturing an oxidized fiber bundle includes joining an upstream precursor fiber bundle and a downstream precursor fiber bundle together with a joining fiber bundle, and oxidizing the joined precursor fiber bundles by feeding the joined precursor fiber bundles through an oxidization furnace. The joining includes applying an oiling agent to a joint area of a joining target precursor fiber bundle before joining the joining target precursor fiber bundle and the joining fiber bundle together. A quantity of the oiling agent adhering to the joint area is 0.15 to 0.85 wt %.

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