In its basic definition, Compression Molding is a forming process whereby a substance or material is placed directly into a heated metal mold then subjected to high pressure in order to produce a pre-defined shape. This method of production was originally developed in an effort to replacing heavier metal parts with lighter yet durable composite parts/components.

There are several important factors that must be considered for Compression Molding to be most effective; these include:

• The precise amount of material
• The time required to heat the material
• The energy needed to heat the material
• The most appropriate heating method/technique
• Designing the mold for rapid cooling after compression

The Compression Molding process is often considered to be less expensive than other types of molding. As it permits a consolidation of parts and produces less waste/less material loss. Additional reasons for manufacturers to use this methodology would include the following:

• Lower initial set-up costs; faster set-up times
• Ability to produce larger, more complex parts
• More suitable for smaller production quantities
• Fewer seams/joints – more aerodynamic parts