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1. (WO2018060559) METHOD FOR PRODUCING COMPOSITE MATERIAL PARTS BY IMPREGNATING A SPECIFIC PREFORM

Pub. No.:    WO/2018/060559    International Application No.:    PCT/FR2017/000176
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Sat Sep 23 01:59:59 CEST 2017
IPC: B29C 70/38
B29C 70/08
Applicants: CORIOLIS GROUP
Inventors: HAMLYN, Alexander
JOB, Sophie
Title: METHOD FOR PRODUCING COMPOSITE MATERIAL PARTS BY IMPREGNATING A SPECIFIC PREFORM
Abstract:
The present invention concerns a method for producing a composite material part comprising - a step of producing an initial dry preform (101), formed from unidirectional continuous dry fibres, - a step of applying non-woven filaments to a first main face (111) of the dry preform, - a step of needle-punching said filaments by means of a needle-punching device (5) comprising a plurality of needles (51), each provided with at least one notch, such that filaments are drawn by the needles and arranged in a direction substantially perpendicular to the continuous fibres of the dry preform, and - a step of impregnating the dry preform with an impregnation polymer in order to form the matrix of the composite material part.