US 12,076,945 B2
Method for molding composite material and apparatus for molding composite material
Yuichi Yui, Tokyo (JP); and Akihisa Okuda, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/626,448
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Mar. 19, 2020, PCT No. PCT/JP2020/012206
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/186659, PCT Pub. Date Sep. 23, 2021.
Prior Publication US 2022/0258438 A1, Aug. 18, 2022
Int. Cl. B29C 70/44 (2006.01); B29C 43/36 (2006.01); B29C 43/56 (2006.01); B29C 70/54 (2006.01); B29K 105/08 (2006.01)
CPC B29C 70/44 (2013.01) [B29C 43/3607 (2013.01); B29C 43/3642 (2013.01); B29C 43/56 (2013.01); B29C 2043/562 (2013.01); B29K 2105/0872 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A composite material molding method of molding a composite material, the method comprising:
a disposing step of disposing the composite material on a jig molding surface of a molding jig provided in an internal space of a pressure vessel capable of being closed;
a sealing step of forming an endless first sealing region that surrounds the composite material by adhering a resin bag and the jig molding surface to each other with a first sealant, forming an endless second sealing region that surrounds the composite material and is disposed on an outer side from the first sealing region by adhering the resin bag and the jig molding surface to each other with a second sealant, and airtightly sealing the composite material with the resin bag;
a depressurizing step of depressurizing a first space on an inner side of the first sealing region and a second space between the first sealing region and the second sealing region; and
a heat-curing step of heat-curing the composite material by supplying steam with a predetermined temperature and a predetermined pressure to the internal space of the pressure vessel in a state where the pressure vessel is closed,
wherein in the sealing step, a ventilation member for securing a ventilation space is disposed in the second space to surround the first sealing region, and
in the sealing step, the ventilation member is disposed in the second space such that a distance from an outer periphery-side end portion of the ventilation member to the second sealant is shorter than a distance from an inner periphery-side end portion of the ventilation member to the first sealant.