US 11,746,200 B2
Fiber-reinforced resin molding material and molded article
Yasukazu Ono, Nagoya (JP); Takafumi Hashimoto, Nagoya (JP); Akira Shimoyama, Nagoya (JP); and Tetsuya Motohashi, Nagoya (JP)
Assigned to Toray Industries, Inc., Tokyo (JP)
Appl. No. 17/280,564
Filed by Toray Industries, Inc., Tokyo (JP)
PCT Filed Sep. 24, 2019, PCT No. PCT/JP2019/037367
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/067058, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-184573 (JP), filed on Sep. 28, 2018.
Prior Publication US 2022/0049061 A1, Feb. 17, 2022
Int. Cl. C08J 5/24 (2006.01); B29C 70/50 (2006.01); C08K 7/06 (2006.01)
CPC C08J 5/243 (2021.05) [B29C 70/502 (2013.01); C08K 7/06 (2013.01); B29C 2793/0027 (2013.01); C08J 2333/04 (2013.01); C08J 2363/00 (2013.01); C08J 2367/00 (2013.01); C08K 2201/004 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A fiber-reinforced resin molding material [C] of a chopped fiber bundle [A] impregnated with a matrix resin [B], having a layered structure including three or more layers in a thickness direction of the fiber-reinforced resin molding material [C] and satisfying Formula (1) and Formula (3), wherein Lao and Tao are respectively a number average fiber length and a number-average fiber bundle thickness of a chopped fiber bundle [Ao] in an outermost layer, Lam and Tam are respectively a number average fiber length and a number-average fiber bundle thickness of a chopped fiber bundle [Am] in a middle layer,
Lao>Lam  (1)
Tao>Tam  (3).