Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1986-05-02
1987-05-05
Cannon, James C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
156221, 156228, 156245, 264119, 264122, 264126, 264257, 2643281, 428 35, 428174, 428296, B32B 100, B29C 4514, D04H 158
Patent
active
046632255
ABSTRACT:
A fiber reinforced, composite article is manufactured by forming a nonwoven, air-laid batt from a single fiber type or a mixture of fibers. The batt is either resinated with a thermoplastic material or includes a thermoplastic binder fiber. The batt is formed into a preform having the desired shape in a through-air mold and heated sufficiently to set the thermoplastic material, so that the resulting preform retains the desired shape and is sufficiently stiff to withstand the pressure of the injected resin. The preform is then transferred to a resin injection mold, where the interstices between the fibers are saturated with an appropriate resin matrix. As the fibers of the preform are saturated (or after a saturation but before the resin sets) the resin transfer mold is compressed, thereby forming the preform into its final desired thickness and increasing the concentration of the fibers to give the preform appropriate strength. Accordingly, the preform retains the open characteristics permitting easy injection of the resin, while later being compressed to increase the concentration of the reinforcing fibers to give the resulting composite the appropriate strength.
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Farley Radcliffe W.
Homonoff Edward C.
Rodman Clarke A.
Vaughn Edward A.
Allied Corporation
Antonis William N.
Cannon James C.
Decker Ken C.
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