TEXTILE COMPLEX INTENDED TO BE USED AS REINFORCING LAYER FOR THE MANUFACTURE OF COMPOSITE PARTS, AND PROCESS FOR MANUFACTURING SUCH A COMPLEX

摘要

The invention relates to a textile complex (1) intended to be used as reinforcing layer for the manufacture of three-dimensional composite parts by resin injection or infusion processes, comprising at least one fibre-based reinforcing layer (2). The textile complex is characterized in that it includes, on one of its bases, a fixing layer (3) based on a thermoplastic material having an almost zero cold elongation and a melting point below the melting point of the other materials of the complex, and in that said fixing layer (3) is apertured in order to allow the passage of the injected or infused resin. The invention also relates to a process for manufacturing a flexible preform, during which the shape of the reinforcement is maintained by the presence of a fixing layer fastened to the reinforcement in a preform mould.