Patent ID: 8852495
Filing Date: 2014-10-07
Classification: B29C,B29K

Abstract:
1. A process for manufacturing a piece made of composite material comprising a fiber preform that is embedded in a matrix, comprising: placing said preform in a first chamber that is delimited by a first semi-sealed wall which is permeable to gas and impermeable to a product that is able to form the matrix, the first semi-sealed wall comprising at least one sealed plate having a plurality of tapered pipes that empty on either side of the at least one sealed plate, a cross section of the plurality of tapered pipes being adapted so that pressure being exerted on the piece does not mark the piece, the cross section of the plurality of tapered pipes having a small cross section that is oriented toward the first chamber in a direction of the pressure exerted on the piece, the first semi-sealed wall also comprising at least one semi-sealed membrane that is superposed on said at least one plate, the semi-sealed membrane being arranged on a side of a surface of the plate opposite to a side that is in contact with the piece to be produced; and extracting gases in a second chamber that is delimited by a second gas-tight wall and said first semi-sealed wall so as to obtain the diffusion of the product that is able to form the matrix in the preform.