Title:
PARTIALLY SEPARATED FIBER BUNDLE, PRODUCTION METHOD FOR PARTIALLY SEPARATED FIBER BUNDLE, FIBER-REINFORCED RESIN MOLDING MATERIAL USING PARTIALLY SEPARATED FIBER BUNDLE, AND PRODUCTION METHOD FOR FIBER-REINFORCED RESIN MOLDING MATERIAL USING PARTIALLY SEPARATED FIBER BUNDLE
Document Type and Number:
WIPO Patent Application WO/2017/221656
Kind Code:
A1
Abstract:
A partially separated fiber bundle that comprises separation-processed sections and not-separation-processed sections that are alternately formed along the long direction of a fiber bundle that comprises a plurality of single threads, wherein the separation-processed sections comprise a plurality of divided fiber bundles that have been divided by separation processing. The partially separated fiber bundle is characterized in that the number of single threads in the divided fiber bundles of the separation-processed sections is nonuniform. A production method for the partially separated fiber bundle, a fiber-reinforced resin molding material that uses the partially separated fiber bundle, and a production method for the fiber-reinforced resin molding material that uses the partially separated fiber bundle. Because the partially separated fiber bundle is separated into comparatively thin bundles and comparatively thick bundles that have different numbers of single threads, when the partially separated fiber bundle has been made into an intermediate substrate that is to be used in composite material molding, it is possible to achieve an optimal distribution of thin fiber bundles and thick fiber bundles and to achieve a good balance between fluidity during molding and the mechanical properties of a molded article.
Inventors:
MOTOHASHI TETSUYA (JP)
HASHIMOTO TAKAFUMI (JP)
MIYOSHI KATSUHIRO (JP)
SATO CHIASA (JP)
HASHIMOTO TAKAFUMI (JP)
MIYOSHI KATSUHIRO (JP)
SATO CHIASA (JP)
Application Number:
PCT/JP2017/020404
Publication Date:
December 28, 2017
Filing Date:
June 01, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D02J1/18; B65H51/005
Domestic Patent References:
| WO2016043037A1 | 2016-03-24 | |||
| WO2016104154A1 | 2016-06-30 | |||
| WO2017006989A1 | 2017-01-12 | |||
| WO2016136812A1 | 2016-09-01 |
Foreign References:
| JP2006219780A | 2006-08-24 | |||
| JP2011241494A | 2011-12-01 |
Other References:
See also references of EP 3473758A4
Attorney, Agent or Firm:
BAN Toshimitsu et al. (JP)
Download PDF: