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Patent Searching and Data


Title:
CARBON FIBER MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2014/157394
Kind Code:
A1
Abstract:
Provided is a carbon fiber manufacturing method with which high quality carbon fibers can be obtained. The carbon fiber manufacturing method satisfies all of (1)-(3) below. (1) The method comprises processes for introducing carbon fiber precursor fiber bundles that have been spread in sheet form into a flameproofing furnace, flameproofing the carbon fiber precursor fiber bundles introduced in the flameproofing furnace in a temperature range of 200°C - 300°C, introducing the flameproofed fiber bundles obtained from the flameproofing process into a carbonization furnace, and carbonizing the flameproofed fiber bundles introduced into the carbonization furnace in a temperature range of 300°C - 2500°C. (2) The flameproofing furnace has a heat-treatment chamber and a sealing chamber adjacent thereto and exhausts from the sealing chamber to the outside of the flameproofing furnace. (3) The space velocity (SV) (1/h) of the hot blast blown from the heat-treatment chamber into the sealing chamber satisfies the following relationship. 80 ≤ (SV) ≤ 400

Inventors:
HATAYAMA Akito (Mitsubishi Rayon Co. Ltd., 1-2, Ushikawadori 4-chome, Toyohashi-sh, Aichi 01, 〒4408601, JP)
SUGIURA Naoki (Mitsubishi Rayon Co. Ltd., 1-2, Ushikawadori 4-chome, Toyohashi-sh, Aichi 01, 〒4408601, JP)
HATA Masahiro (Mitsubishi Rayon Co. Ltd., 1-2, Ushikawadori 4-chome, Toyohashi-sh, Aichi 01, 〒4408601, JP)
Application Number:
JP2014/058647
Publication Date:
October 02, 2014
Filing Date:
March 26, 2014
Export Citation:
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Assignee:
MITSUBISHI RAYON CO., LTD. (1-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 53, 〒1008253, JP)
International Classes:
D01F9/12; D06C7/04; F27B9/28; F27D7/06
Foreign References:
JPH11173761A1999-07-02
JP2010223471A2010-10-07
JPH07118933A1995-05-09
JPS62228865A1987-10-07
JPH11173761A1999-07-02
JP2000136441A2000-05-16
JP2004143647A2004-05-20
Other References:
See also references of EP 2980283A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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