Compression Molding

Compression molding is the simplest method used for the production of elastomeric materials. The term comes from the fact that the mold cavity compresses the material as it closes, forming the part. Material is placed directly into the cavity then closed , put under pressure (compressed) forcing the material to conform exactly to the cavity. The cure occurs as the pressure and heat cause the thermoset material to crosslink.

The advantages of this type of mold are:

• Lower tooling cost
• Less material waste (generally) than with transfer
• Less cost overall for smaller runs

Vertical rubber molding compression/transfer press capabilities:
from 15 tons to over 300 tons clamping force. Platen sizes range up to 30” x 30”.

We can process the following elastomers:

• Acrylic
• Aflas
• BUNA or Nitrile including hydrogenated Nitrile, HSN, or HNBR
• Butyl
• EPDM
• FKM
• Fluorosilicone
• Hypalon
• Natural rubber/polyisoprene
• Neoprene/chloroprene
• SBR
• Silicone
• Urethane
• Viton™