US 12,466,946 B2
Method for producing FRP precursor
Yuji Tosaka, Tokyo (JP); Takeshi Saitoh, Tokyo (JP); Masaki Yamaguchi, Tokyo (JP); Tetsuro Iwakura, Tokyo (JP); Yuichi Shimayama, Tokyo (JP); Kosuke Murai, Tokyo (JP); and Masashi Oji, Tokyo (JP)
Assigned to RESONAC CORPORATION, Tokyo (JP)
Appl. No. 18/025,456
Filed by Resonac Corporation, Tokyo (JP)
PCT Filed Sep. 10, 2021, PCT No. PCT/JP2021/033402
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2022/054928, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 2020-153144 (JP), filed on Sep. 11, 2020.
Prior Publication US 2023/0323108 A1, Oct. 12, 2023
Int. Cl. C08L 63/00 (2006.01); B29B 11/04 (2006.01); B29B 11/16 (2006.01); B29K 101/10 (2006.01); B29K 105/16 (2006.01); C08J 5/18 (2006.01)
CPC C08L 63/00 (2013.01) [B29B 11/04 (2013.01); B29B 11/16 (2013.01); C08J 5/18 (2013.01); B29K 2101/10 (2013.01); B29K 2105/16 (2013.01); C08J 2363/00 (2013.01); C08J 2463/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of producing an FRP precursor, the method comprising:
pre-coating a resin varnish having a filler content of 5 vol % or less in a solid content thereof, to a sheet-shaped aggregate;
providing a pair of resin films, each having a filler content of 30 vol % or more; and
melt-pasting the pair of resin films, each having a filler content of 30 vol % or more, to respective sides of the aggregate, after the pre-coating,
wherein in the pre-coating, an volume of solids in the resin varnish to be used is determined by the following formula (1):

OG Complex Work Unit Math