A pre-measured slug of rubber is placed between two halves of matched metal molds. The mold is closed under pressure and the heat and pressure liquifies the rubber and causes it to fill the mold. The heated molds initiate the chemical reaction that cures the rubber. This process produces parts of a lower tolerance than injection molding.

Process Characteristics:

• Part Cost - low
• Tooling Cost - moderate
• Production rate - low to high
• Tools can be produced with large numbers of cavities to produce large numbers or parts at low cost.
• Compression molded parts have looser tolerances than injection molded ones.

KEYWORDS for this process: moulds, moulding, moulders, molders