B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 5/28 (2006.01) B29C 70/02 (2006.01) B29C 70/24 (2006.01) B29C 70/46 (2006.01) B32B 5/26 (2006.01) B32B 27/04 (2006.01) D04H 1/48 (2006.01)
Patent
CA 2413842
16 A fiber preform constituting fiber reinforcement of a composite material part that is to be fabricated is made by superposing and bonding together fiber plies, and by densifying the needled preform by introducing a material constituting the matrix of the composite material into it. During the process of making the preform, a powder is dusted onto the surface of at least some of the plies, the powder comprising at least one ingredient selected from a solid resin. in powder form and solid fillers in powder form. The powder is dusted onto the surface of the top ply of the preform that is being made, prior to superposing and needling at least one additional ply.
16 Préforme de fibre constituant le renforcement de fibre d'une pièce en matériau composite à fabriquer; cette préforme est fabriquée en superposant et en liant ensemble des plis de fibre et en densifiant la préforme voulue en y introduisant un matériau constituant la matrice du matériau. Pendant le processus de fabrication de la préforme, une poudre est saupoudrée sur la surface d'au moins quelques plis, la poudre comprenant au moins un ingrédient choisi d'une résine solide sous forme de poudre, et de produits de remplissage sous forme de poudre. La poudre est saupoudrée sur la surface du pli supérieur de la préforme en cours de fabrication, avant de superposer et de piquer au moins un pli supplémentaire.
Bouillon Eric
Guirman Jean-Michel
Lavasserie Eric
Philippe Eric
Messier-Bugatti
Sim & Mcburney
Snecma Propulsion Solide
LandOfFree
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