Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2005-12-16
2010-06-01
Del Sole, Joseph S (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C264S102000, C264S313000, C264S511000, C425S388000
Reexamination Certificate
active
07727448
ABSTRACT:
A fiber structure for forming the reinforcement of a part to be made is placed in a mold (22) having at least one wall formed by a flexible membrane, and then a resin composition is injected into the mold, the composition having a volatile material content of less than 25% by weight and being at a temperature of a value such that its viscosity lies in the range 0.1 Pa·s to 0.3 Pa·s. The resin is polymerized in the mold placed in an enclosure (20) with temperature being raised progressively and with polymerization including at least a final stage of polymerization under pressure in order to obtain a composite material part presenting residual porosity of less than 11% by volume.
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Boutefeu Brigitte
Cauchois Jean-Pierre
Dauchier Martine
Fages Marie-Laure
Del Sole Joseph S
SNECMA Propulsion Solide
Sultana Nahida
Weingarten Schurgin, Gagnebin & Lebovici LLP
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