Impregnated veils
AssigneeMagna Exteriors Inc.
InventorsJohn A. Ingram, David A. Calder, Daniel P. McNulty, Paul A. Trudeau, Henry E. Moore
Life of this patent
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Abstract
Impregnated veil and compression molding process of reinforcing fiber pre-impregnated continuous and discontinuous thermoset and thermoplastic materials. Veils are incorporated within the process, filming or laminating stages of the pre-pregging, either hotmelt or solvent based processes, in a variety of chosen resins. The veils help to improve visual part quality, reduce fiber splitting, and provide an isolating material in applications where incompatible materials must exist.
Claims10
A compression molding process for carbon fiber pre-impregnated materials, comprising:
- providing at least one pre-impregnated first ply;
- providing a plurality of pre-impregnated sub-plies below the first ply, said first ply and sub-plies have a predetermined orientation of either 0° or 90°;
- providing at least one impregnated veil incorporated into a predetermined surface of at least one ply of the pre-impregnated first ply and/or pre-impregnated sub-plies;
- cutting and/or pre-forming the pre-impregnated materials with the at least one impregnated veil to a predetermined shape forming a pre-impregnated blank;
- and
- compression molding the pre-impregnated blank under predetermined clamping pressure and temperature ranges to form a part;
- wherein the fiber content of the at least one impregnated veil is about 12 to 20 GSM, and the first ply and/or each sub-ply has a fiber areal weight of about 190 GSM;
- wherein the at least one impregnated veil is incorporated into the top surface of the first ply;
- and
- wherein the conditioned areal weight of the first ply with the impregnated veil is about 350 GSM and the sub-plies are about 317 GSM.
Dependencies are inferred from the claim text.