Patent ID: 6136236
Filing Date: 2000-10-24
Classification: B29C

Abstract:
A process for manufacturing composite material parts by resin transfer moulding in a mould containing a fibre pellet, said process comprising the following steps:a) compressing of the fibre pellet in the mould to obtain a fibre content of more than 58%, and simultaneously injecting resin into the mould through a mould inlet at a constant reference flow rate, while an instantaneous pressure at the mould inlet is lower than a reference pressure value,b) when this reference pressure value is reached, reducing the injection flow rate of the resin into the mould, so that the instantaneous pressure is maintained at a value that is virtually the same as the reference pressure value,c) temporarily reducing compression of the fibre pellet in the mould;d) progressively increasing the injection flow rate of the resin into the mould until the reference flow rate is reached; ande) returning to step a).