Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
1991-11-15
1992-04-21
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing multilayer work or article
264258, 264313, 425388, 156286, B29B 0904
Patent
active
051065681
ABSTRACT:
A method and apparatus for vacuum bag molding of composite materials which eliminates the need for a porous release sheet. Prepregs are placed on a forming tool and overlayed with at least one sheet of nonporous material and a breather sheet and then enclosed within an impermeable membrane. The volume enclosed by the membrane is evacuated, the resin in the prepregs is outgassed, and the prepregs are coalesced to mold the prepregs to the shape of the forming tool. After curing the resin, the temperature is reduced and the resultant article is removed from the forming tool.
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Courson Timothy H.
Durkin II Jeremiah F.
Gosnell Guy R.
Hudson, Jr. Benjamin
McDonnell Douglas Corporation
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