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Prepreg

Prepreg is a fibre fabric or tape pre-impregnated with a controlled amount of resin and stored at low temperature.

Prepreg plies are laid up according to the ply book and cured in an autoclave, with RAT (Reverse Autoclave Technology), under a vacuum bag in an oven (OOA – out-of-autoclave) or in a press (PCM – prepreg compression moulding).

Read more: Autoclave.

All terms in the glossary

Related terms

  • Laminate porosity

    Laminate porosity is the volume fraction of voids (air and gas bubbles) in a cured composite.

  • Autoclave

    An autoclave is a pressurised heated chamber in which a laminate under a vacuum bag cures under gas pressure at an elevated temperature.

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