Apparatus for molding a composite material article

Details Apparatus for molding a composite material article Apparatus for molding a composite material article

1994-03-16

1995-01-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

By fluid pressure actuated flexible diaphragm

156382, 4254051, 425415, 425420, B29C 5110, B29C 5128

Patent

active

053821505

ABSTRACT:
A method and apparatus of molding articles from composite materials are dlosed in which a stack of prepregs are placed on a first forming surface of a former, which forming surface has a surface configuration matching that of one side of the composite article, placing a semi-rigid molding shelf onto the former such that a second forming surface of the molding shell, which matches the surface configuration of an opposite side of the composite article, bears against the stack of prepregs and urging the molding shell towards the former, thereby compressing the plies of prepregs by drawing a vacuum between an impermeable membrane covering the molding shell and the former. The assembly of the former, the molding shell, the stack of prepregs and the impermeable membrane are placed in an autoclave such that it may be heated while the vacuum is drawn between the membrane and the former to compress the stack of plies of prepregs.

REFERENCES:
patent: 2644985 (1953-07-01), Crandon
patent: 4062917 (1977-12-01), Hill et al.
patent: 4267142 (1981-05-01), Lankheet
patent: 4562033 (1985-12-01), Johnson et al.
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patent: 4683018 (1987-07-01), Sutcliffe et al.
patent: 4824631 (1989-04-01), Yeager
patent: 5059377 (1991-10-01), Ashton et al.
patent: 5078938 (1992-01-01), Munk et al.
patent: 5122176 (1992-06-01), Goettler
Mold Making Handbook, Klaus Stoeckhart, McMillan Pub. Co. (1983).

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