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Title:
THERMOPLASTIC PREPREG, FIBER-REINFORCED PLASTIC, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/050213
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a fiber-reinforced plastic capable of conforming to shapes of higher complexity while remaining light in weight and maintaining mechanical characteristics.　Provided is a thermoplastic prepreg that is formed by impregnating a thermoplastic resin into a discontinuous reinforcing-fiber web and satisfies at least one of the following features (A) and (B). Feature (A): Has a plurality of cut marks that cut at least some of the discontinuous reinforcing fibers constituting the discontinuous reinforcing-fiber web. Feature (B): Has a region of variable fiber lengths in which the coefficient of variation of the fiber lengths of the discontinuous reinforcing fibers constituting the discontinuous reinforcing-fiber web is 40% or more.

Inventors:
ADACHI KENTARO (JP)
TSUDA TERUMASA (JP)
KAWAHARA KOTA (JP)
HONMA MASATO (JP)
MATSUTANI HIROAKI (JP)
Application Number:
PCT/JP2021/031685
Publication Date:
March 10, 2022
Filing Date:
August 30, 2021
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29B11/16; B29C70/12; B29C70/34; C08J5/24; B29K105/12
Domestic Patent References:
WO2017110533A12017-06-29
WO2016084824A12016-06-02
WO2018055932A12018-03-29
WO2019189384A12019-10-03
WO2017110528A12017-06-29
WO2015029634A12015-03-05
Foreign References:
JP2013166923A2013-08-29
JP2017043095A2017-03-02
JP2018043412A2018-03-22
JP2018043412A2018-03-22
JP2017119430A2017-07-06
JP2008207544A2008-09-11
JP2010235779A2010-10-21
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