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Patent Searching and Data


Title:
METHOD FOR PRODUCING CARBON FIBER BUNDLE WITH SLIT, CARBON FIBER PACKAGE, AND METHOD FOR PRODUCING CARBON FIBER PACKAGE
Document Type and Number:
WIPO Patent Application WO/2021/251205
Kind Code:
A1
Abstract:
The present invention provides a means for improving a method for producing a carbon fiber bundle with a slit. A method for producing a carbon fiber bundle with a slit according to the present invention is characterized by comprising: a step wherein a resin film is formed on one surface of a flat carbon fiber bundle, thereby obtaining a single sided coated carbon fiber bundle; and a step wherein the single sided coated carbon fiber bundle is partially slit into sub-bundles with use of a slitter roll, thereby obtaining a carbon fiber bundle with a slit. This method for producing a carbon fiber bundle with a slit is also characterized in that a surface of the single sided coated carbon fiber bundle, on said surface the resin film having been formed, comes into contact with the circumferential surface of the slitter roll in the step for slitting.

Inventors:
OKAMOTO SATOSHI (JP)
MIZUTORI YUKIHIRO (JP)
KANEHAGI JUNJI (JP)
Application Number:
PCT/JP2021/020779
Publication Date:
December 16, 2021
Filing Date:
June 01, 2021
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
D02J1/18; B29B11/16; D06H7/04; D06M15/59; B29K105/14; D06M101/40
Domestic Patent References:
WO2019058910A12019-03-28
WO2017221658A12017-12-28
WO2020080238A12020-04-23
WO2020158496A12020-08-06
Foreign References:
JP2018076620A2018-05-17
JP2011241494A2011-12-01
JPH04317962A1992-11-09
JP2011006833A2011-01-13
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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