This is basically an extension of the wet lay-up process described above where pressure is applied to the laminate once laid-up in order to improve its consolidation. This is achieved by sealing a plastic film over the wet laid-up laminate and onto the tool. The air under the bag is extracted by a vacuum pump and thus up to one atmosphere of pressure can be applied to the laminate to consolidate it.
Resins: Primarily epoxy and phenolic. Polyesters and vinylesters may have problems due to excessive extraction of styrene from the resin by the vacuum pump.
Fibres: The consolidation pressures mean that a variety of heavy fabrics can be wet-out.
Large, one-off cruising boats, racecar components, core-bonding in production boats.
Published courtesy of David Cripps, Gurit
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