In other infusion processes (SCRIMP, RIFT, VARTM), fabrics are laid up as a dry stack of materials as in RTM. The fibre stack is then covered with peel ply and a knitted type of non-structural fabric. The whole dry stack is then vacuum bagged, and once bag leaks have been eliminated, resin is allowed to flow into the laminate. The resin distribution over the whole laminate is aided by resin flowing easily through the non-structural fabric, and wetting the fabric out from above.
Resins: Generally epoxy, polyester and vinylester.
Fibres: Any conventional fabrics. Stitched materials work well in this process since the gaps allow rapid resin transport.
Cores: Any except honeycombs.
Semi-production small yachts, train and truck body panels.
Published courtesy of David Cripps, Gurit
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