US 11,890,823 B2
Composite material structure manufacturing jig, method of manufacturing the same, and method of manufacturing composite material structure
Toshikazu Sana, Kobe (JP)
Assigned to KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
Appl. No. 17/423,494
Filed by Kawasaki Jukogyo Kabushiki Kaisha, Kobe (JP)
PCT Filed Jan. 17, 2020, PCT No. PCT/JP2020/001516
§ 371(c)(1), (2) Date Jul. 16, 2021,
PCT Pub. No. WO2020/149403, PCT Pub. Date Jul. 23, 2020.
Claims priority of provisional application 62/793,459, filed on Jan. 17, 2019.
Prior Publication US 2022/0072808 A1, Mar. 10, 2022
Int. Cl. B29C 33/50 (2006.01); B29C 70/34 (2006.01); B29C 33/62 (2006.01); B29C 70/54 (2006.01); B29K 105/08 (2006.01); B29L 31/30 (2006.01)
CPC B29C 70/345 (2013.01) [B29C 33/62 (2013.01); B29C 70/54 (2013.01); B29K 2105/0872 (2013.01); B29L 2031/3082 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A composite material structure manufacturing jig used when manufacturing a composite material structure by adhering prepreg to a framework structure including a frame component that includes a channel extending along a longitudinal direction of the frame component, the composite material structure manufacturing jig being inserted in the channel of the frame component and used therein, the composite material structure manufacturing jig comprising:
a tubular body formed of an elastic material containing a reinforcement fiber, the tubular body including a trapezoidal transverse section that is a cross section orthogonal to a longitudinal direction of the tubular body, the trapezoidal transverse section including an upper base and a lower base longer than the upper base, wherein
an inner surface of the tubular body is coated with a gas barrier layer, and
an interface between the gas barrier layer and the tubular body is treated by a surface treatment.