US 11,667,102 B2
Preform and method of manufacturing fiber-reinforced resin composite material
Naoyuki Sekine, Tokyo (JP); and Keisuke Hamada, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on May 12, 2020, as Appl. No. 15/930,186.
Claims priority of application No. JP2019-142637 (JP), filed on Aug. 2, 2019.
Prior Publication US 2021/0031485 A1, Feb. 4, 2021
Int. Cl. B32B 5/08 (2006.01); B32B 27/34 (2006.01); B29C 70/08 (2006.01); B29K 77/00 (2006.01); B29K 105/08 (2006.01); B29K 277/00 (2006.01)
CPC B32B 5/08 (2013.01) [B29C 70/08 (2013.01); B32B 27/34 (2013.01); B29K 2077/00 (2013.01); B29K 2105/0872 (2013.01); B29K 2277/00 (2013.01); B29K 2995/0077 (2013.01); B32B 2262/0261 (2013.01); B32B 2307/54 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A preform comprising
a stack of a plurality of fiber materials each including:
a first fiber layer including a reinforcing fiber and having a sheet shape, the reinforcing fiber having a melting point and a tensile strength that are higher than a melting point and a tensile strength of an aliphatic polyamide fiber; and
a second fiber layer including the aliphatic polyamide fiber and having a sheet shape, and provided on at least one surface of the first fiber layer,
wherein the aliphatic polyamide fiber includes an outer peripheral part including a first polyamide resin, and a core including a second polyamide resin and covered by the outer peripheral part,
wherein the first polyamide resin is polyamide 12, and the second polyamide resin is at least one of polyamide 1010 and polyamide 6, and
wherein a ratio of mass of the first polyamide resin included in the aliphatic polyamide fiber and mass of the second polyamide resin included in the aliphatic polyamide fiber is in a range from 30:70 to 70:30.