US 12,263,667 B2
Composite material and method of forming composite material
Toshiki Kitazawa, Tokyo (JP); Shoya Mano, Tokyo (JP); Hiromichi Akiyama, Tokyo (JP); Kenji Murakami, Tokyo (JP); and Masahiko Shimizu, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/293,331
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Dec. 17, 2019, PCT No. PCT/JP2019/049275
§ 371(c)(1), (2) Date May 12, 2021,
PCT Pub. No. WO2020/137671, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-245054 (JP), filed on Dec. 27, 2018.
Prior Publication US 2021/0402674 A1, Dec. 30, 2021
Int. Cl. B29C 70/68 (2006.01); B29C 53/00 (2006.01); B29C 53/04 (2006.01); B29C 70/54 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B29K 105/00 (2006.01); C08J 5/24 (2006.01)
CPC B32B 7/12 (2013.01) [B29C 53/005 (2013.01); B29C 53/04 (2013.01); B29C 70/54 (2013.01); B29C 70/682 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/256 (2013.01); C08J 5/24 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of forming a composite material, the method comprising:
a preparation step of preparing the composite material, which includes a laminate in which plural fiber sheets are laminated, the laminate having a bendable portion that is to be bent along a die, and in a first region of the laminate from an end edge on a bending side to the bendable portion, the laminate is separated into plural layers along a plate thickness direction of the laminate; and
a forming step of forming the composite material by bending the composite material separated into the plural layers, layer-by-layer, along the bendable portion,
wherein, in the preparation step:
the plural layers of the laminate are bonded and integrated along the plate thickness direction of the laminate in a second region on a side opposite to the end edge on the bending side with respect to the bendable portion; and
a release material is provided between at least two of the plural layers in the first region of the laminate.