US 11,926,088 B2
Prepreg, preform, fiber-reinforced composite material, and method for producing said prepreg, said preform or said fiber-reinforced composite material
Naokichi Imai, Ehime (JP); Kotaro Shinohara, Ehime (JP); and Masato Honma, Ehime (JP)
Assigned to Toray Industries, Inc., Tokyo (JP)
Appl. No. 17/778,077
Filed by Toray Industries, Inc., Tokyo (JP)
PCT Filed Nov. 16, 2020, PCT No. PCT/JP2020/042588
§ 371(c)(1), (2) Date May 19, 2022,
PCT Pub. No. WO2021/106651, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 2019-216113 (JP), filed on Nov. 29, 2019.
Prior Publication US 2022/0410465 A1, Dec. 29, 2022
Int. Cl. B29C 53/24 (2006.01); B29C 70/34 (2006.01); B29C 70/54 (2006.01); B32B 3/28 (2006.01); B32B 5/02 (2006.01); B29K 105/00 (2006.01); B29K 105/12 (2006.01); B29K 105/24 (2006.01); B29L 7/00 (2006.01)
CPC B29C 53/24 (2013.01) [B29C 70/34 (2013.01); B29C 70/54 (2013.01); B32B 3/28 (2013.01); B32B 5/022 (2013.01); B29K 2105/128 (2013.01); B29K 2105/24 (2013.01); B29K 2105/256 (2013.01); B29L 2007/002 (2013.01); B32B 2250/20 (2013.01); B32B 2260/021 (2013.01); B32B 2305/076 (2013.01); B32B 2307/732 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A prepreg comprising a planar reinforced fiber substrate (B) impregnated with a resin (A),
wherein the planar reinforced fiber substrate (B) exists in a folded state having a plurality of folds with a fold angle of 0° or more and less than 90° in the prepreg,
wherein the resin (A) is disposed in a space defined by the plurality of folds by the folded planar reinforced fiber substrate (B).