Compound molding such as BMC and SMC involves co-mixing resin, filler and fiber reinforcement in a mechanical device, shaping the mixture for convenient handling and charging it into a shaped mold in a compression press. Chopped glass and carbon fibers constitute the major type of reinforcement for compound molding.

Significant technological advances have made SMC a viable alternative to steel for exterior body panels. The development of new low-shrink resin formulations, improvements in tool surface generation, improved process controls and the use of in-mold coatings (IMC) have all contributed to this progress. Soucy Composites participates intensively in the application and development of these technologies to guide future standards of quality and efficiency and is in a position to supply Class A surface finish requirements for the transportation industry (cars, buses, mass transit, trucks).

When continuous fiber reinforcements are in a fabric form and combined with a thermoset or thermoplastic resin matrix that can be stored prior to molding under controlled conditions, the term Prepreg is used. This technique is used for laying unto, into and around a mold to form a structure after heat curing under pressure.