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1. (WO2018185383) METHOD FOR PRODUCING COMPOSITE MATERIAL PARTS FROM NEEDLED PREFORMS

Pub. No.:    WO/2018/185383    International Application No.:    PCT/FR2018/000086
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Sat Mar 31 01:59:59 CEST 2018
IPC: B29C 70/24
Applicants: CORIOLIS GROUP
Inventors: HAMLYN, Alexander
JOB, Sophie
Title: METHOD FOR PRODUCING COMPOSITE MATERIAL PARTS FROM NEEDLED PREFORMS
Abstract:
The present invention concerns a method for producing composite material parts comprising continuous fibres and a matrix composed of at least a first polymer, the method comprising - a step of producing a preform (101), formed from continuous fibres and the first polymer, - a step of applying non-woven filaments to at least a first main face (111) of the preform, - a step of needling said filaments by means of a needling device (5) comprising a plurality of needles (51), each having at least one notch, such that filaments are drawn by the needles and are arranged in a direction substantially perpendicular to the continuous fibres of the preform, and - a step of applying a heat treatment to the preform to obtain the composite material part.