Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1992-01-02
1993-11-30
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264257, 264258, 264261, 264263, 264314, B29C 6722, B29C 5128
Patent
active
052662497
ABSTRACT:
A method of forming a hollow structure in a female mold includes the step of assembling a vacuum bag and an uncured composite layer assembly comprising a fiber reinforced resin in a female mold, so that the composite layer assembly extends along the inner surfaces of the mold, and so that the vacuum bag is received inside the composite layer assembly in the mold. The method further includes the step of evacuating the area between the vacuum bag and the composite layer assembly, so that the vacuum bag applies outward pressure to the composite layer assembly in order to urge the composite layer assembly outwardly against the inner surface of the mold. The method still further includes the steps of curing the composite layer assembly while maintaining a vacuum on the area between the composite layer assembly and the vacuum bag, and thereafter releasing the vacuum and removing the cured composite layer assembly from the mold.
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Duffy Timothy M.
Grimes, III Paul J.
Fusion Composites, Inc.
Kuhns Allan R.
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