Patent ID: 9221201
Filing Date: 2015-12-29
Classification: B29C,B29K

Abstract:
1. A method for manufacturing a composite material constituted by a fiber-reinforced matrix resin by using a vacuum impregnation method, the method comprising: a fixing step of placing a reinforced fiber base material on a forming die having a concave part and fixing the reinforced fiber base material to the forming die by at least a pair of fixing members disposed on either side of the concave part; a covering step of covering, with a bag film, the reinforced fiber base material fixed to the forming die; decompressing step of decompressing a forming space formed between the forming die and the bag film; a flowing step of allowing the matrix resin to flow inside the decompressed forming space; and a curing step of curing the matrix resin so as to obtain a composite material in which the reinforced fiber base material and the matrix resin are integrally formed, wherein in the fixing step, the reinforced fiber base material is fixed to the forming die by the fixing members in a state where a gap is provided between the reinforced fiber base material and a bottom surface of the concave part of the forming die, and in the decompression step, the reinforced fiber base material is deformed by being pressed towards the forming die due to differential pressure between atmospheric pressure and pressure inside the forming space, and said gap becomes smaller.