Method of manufacturing articles from a composite material

Details Method of manufacturing articles from a composite material Method of manufacturing articles from a composite material

1983-06-21

1985-12-31

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264102, B29B 904

Patent

active

045620334

ABSTRACT:
A method of vacuum moulding a composite material in which laid-up prepregs uncured resin and reinforcing filaments are placed on a heated former and covered with a sheet of a microporous film material a breather material and an impermeable membrane. The volume enclosed by the membrane is evacuated and the temperature of the mould increased to firstly outgas the resin and mould the prepregs to the shape of the former and finally cure the resin. The arrangement ensures excellent access of the prepregs to the vacuum during the moulding operation, thereby in turn ensuring that the resultant moulded article has very low porosity as a result of gas or vapor inclusions or is porosity-free.

REFERENCES:
patent: 3575756 (1971-04-01), Maus
patent: 3666600 (1972-05-01), Yoshino
patent: 4065340 (1977-12-01), Dickerson
patent: 4311661 (1982-01-01), Palmer
patent: 4350545 (1982-09-01), Garabedian

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