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Title:
METHOD OF MANUFACTURING CARBON FIBER PRECURSOR ACRYLIC FIBER BUNDLE
Document Type and Number:
WIPO Patent Application WO/2012/165574
Kind Code:
A1
Abstract:
Supply rolls (1) that transfer a carbon fiber precursor acrylic fiber bundle (T) along the transfer direction of the fiber bundle (T), an opening device (2) that opens the fiber bundle (T), a width control device (3) that controls the width of the fiber bundle (T), a steam box (4) that supplies steam to heat the fiber bundle (T) to a temperature at which the fiber bundle (T) can be stretched, take-up rolls (5) that transfer the fiber bundle (T) at a transfer speed faster than the transfer speed of the supply rolls (1) are arranged. The width control device (3), which is arranged on an arbitrary position between the supply rolls (1) and the steam box (4), controls the width of the fiber bundle (T) such that the width after passing through the width control device (3) is in the range of 65% to 110% of the width of the fiber bundle (T) before supply roll introduction. Provided is a method of manufacturing a carbon fiber precursor acrylic fiber bundle, which is capable of stably attaining faster and longer stretching by using a steam stretching device having the aforementioned configuration.

Inventors:
MIYAUCHI Akira (Mitsubishi Rayon Co. Ltd., 1-2, Ushikawadori 4-chome, Toyohashi-sh, Aichi 01, 〒4408601, JP)
宮内 亮 (〒01 愛知県豊橋市牛川通四丁目1番地の2 三菱レイヨン株式会社豊橋事業所内 Aichi, 〒4408601, JP)
OOKI, Isao (Mitsubishi Rayon Co. Ltd., 20-1, Miyuki-cho, Otake-sh, Hiroshima 93, 〒7390693, JP)
大木 勲 (〒93 広島県大竹市御幸町20番1号 三菱レイヨン株式会社大竹事業所内 Hiroshima, 〒7390693, JP)
Application Number:
JP2012/064146
Publication Date:
December 06, 2012
Filing Date:
May 31, 2012
Export Citation:
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Assignee:
MITSUBISHI RAYON CO., LTD. (1-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 53, 〒1008253, JP)
三菱レイヨン株式会社 (〒53 東京都千代田区丸の内一丁目1番1号 Tokyo, 〒1008253, JP)
MIYAUCHI Akira (Mitsubishi Rayon Co. Ltd., 1-2, Ushikawadori 4-chome, Toyohashi-sh, Aichi 01, 〒4408601, JP)
宮内 亮 (〒01 愛知県豊橋市牛川通四丁目1番地の2 三菱レイヨン株式会社豊橋事業所内 Aichi, 〒4408601, JP)
OOKI, Isao (Mitsubishi Rayon Co. Ltd., 20-1, Miyuki-cho, Otake-sh, Hiroshima 93, 〒7390693, JP)
International Classes:
D02J1/22; D01F6/18; D01F9/22; D02J1/18
Foreign References:
JPH1112874A1999-01-19
JP2002309438A2002-10-23
JPS61231213A1986-10-15
JPH11286845A1999-10-19
JPH0770862A1995-03-14
Other References:
See also references of EP 2716802A4
Attorney, Agent or Firm:
NOGUCHI, Takeo et al. (Mutsumi Int. Patent Bureau, p.c. Tousen kanda sudacho Bldg.9F, 28, Kanda-sudacho 1-chome, Chiyoda-k, Tokyo 41, 〒1010041, JP)
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Claims:



 
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