US 11,987,013 B2
Composite material forming method
Toshiyuki Takayanagi, Tokyo (JP); Naomoto Ishikawa, Tokyo (JP); Wataru Nishimura, Tokyo (JP); Nobuyuki Kamihara, Tokyo (JP); Sota Kamo, Tokyo (JP); Kiyoka Takagi, Tokyo (JP); Takashi Ishida, Aichi (JP); Tomoharu Dengo, Aichi (JP); Mikio Muraoka, Akita (JP); and Yukihiro Yoshida, Akita (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP); and AKITA UNIVERSITY, Akita (JP)
Appl. No. 17/419,793
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP); and AKITA UNIVERSITY, Akita (JP)
PCT Filed Jan. 16, 2020, PCT No. PCT/JP2020/001292
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2020/158416, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-013582 (JP), filed on Jan. 29, 2019.
Prior Publication US 2022/0080682 A1, Mar. 17, 2022
Int. Cl. B29C 35/08 (2006.01); B29C 70/20 (2006.01); B29C 70/54 (2006.01)
CPC B29C 70/54 (2013.01) [B29C 35/0805 (2013.01); B29C 70/20 (2013.01); B29C 2035/0811 (2013.01); B29C 2035/0816 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for forming a composite material including reinforcing fibers, the method comprising:
connecting end portions of the reinforcing fibers with equipotential materials to form an electroconductive loop including the reinforcing fibers in the composite material before reaction;
applying a magnetic field in a direction intersecting a plane formed by the electroconductive loop; and
removing the equipotential materials after applying the magnetic field, wherein
connecting the end portions includes placing electrically conductive jig materials serving as the equipotential materials on the composite material to form the electroconductive loop, and
removing the equipotential materials includes withdrawing the electrically conductive jig materials as the equipotential materials from the composite material.