Hexcel Composites Limited

Hexcel Holding Gmbh

Esteban Villalon

Stephen Mortimer

Jimmy Grondin

Neal Patel

Andreas Gabor

A reinforcing composite comprising a plurality of layers of reinforcing composite material forming a stack wherein at least one layer of the stack comprises a moulding compound () comprising consolidated resin impregnated fiber elements, wherein the resin impregnated fiber elements are obtained from off-cuts or scrap material () derived from cutting single layers of reinforcing composite material and/or stacks comprising multiple layers of reinforcing composite material ().

Fibre reinforced composites

Treating an uncured resin matrix composition to impart energy to the resin matrix composition enables a stable Tg to be achieved whereby the resin matrix composition may be stored and has a low tack enabling subsequent processing and handling. The invention provides a method of achieving a stable Tg without the resin matrix composition starting to cure and a method of determining the treatment regime by which a resin matrix composition with a stable Tg may be obtained. The resin matrix composition may be fresh or reused uncured resin matrix composition and may contain fibrous reinforcement.

Growing community of inventors

Dagneux, France

Esteban Villalon