Title:
部分分繊繊維束とその製造方法、および部分分繊繊維束を用いた繊維強化樹脂成形材料とその製造方法
Document Type and Number:
Japanese Patent JP7001997
Kind Code:
B2
Abstract:
A partially separated fiber bundle that comprises separation-processed sections, each divided into a plurality of bundles of at least three bundles, and not-separation-processed sections, that are alternately formed along the lengthwise direction of a fiber bundle that comprises a plurality of single fibers. The partially separated fiber bundle is characterized in that, at any width-direction cross-section taken along the lengthwise direction thereof, a rate of single fibers contained in a region at which adjacent divided fiber bundles are joined by a not-separation-processed part is 67% or less relative to the total single fibers in the width-direction cross-section. 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. When the partially separated fiber bundle has been made into an intermediate base material of fiber bundles of discontinuous fibers that is to be used in molding of a composite material, it is possible to control thin fiber bundles and thick fiber bundles at an optimal ratio and an optimal distribution state and to exhibit the flowability during molding and the mechanical properties of a molded article at a good balance.
Inventors:
Tetsuya Motohashi
Takashi Hashimoto
Yasumiki Noguchi
Yoshihiro Kawahara
Suzuki Ho
Tomoma Sato
Takashi Hashimoto
Yasumiki Noguchi
Yoshihiro Kawahara
Suzuki Ho
Tomoma Sato
Application Number:
JP2017535845A
Publication Date:
January 20, 2022
Filing Date:
June 01, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
D02J1/18; C08J5/04; D06H7/00
Domestic Patent References:
| JP2006219780A | ||||
| JP2011241494A |
Foreign References:
| WO2017006989A1 | ||||
| WO2016043037A1 | ||||
| WO2016136812A1 | ||||
| WO2016104154A1 | ||||
| WO2017159263A1 |
Attorney, Agent or Firm:
Ban Toshimitsu
Koichi Hosoda
Koichi Hosoda