Prepregs

Prepreg is a term used for a composite material that has been “pre-impregnated” with a resin system. Most commonly used prepregs are impregnated with thermosetting epoxy resin and remain tacky until cured. Prepregs often require cold storage and a combination of pressure and heat to fully cure. In general, prepregs are environmentally cleaner, use less toxic materials and produce less outgassing and fumes than those products used during the wet layup process.