Question: what is the difference between laminate and prepreg?
Answer: Prepreg is a type of base material, fiberglass or fabric, that has been pre-impregnated or reinforced with resin, typically epoxy, or polyimide that is partially cured. PCB laminate may contain an inner prepreg; for example, copper clad laminate (CCL), which is a common PCB material, and copper on one of both sides.