GP Rubber
GP Rubber
Compression Molding | Transfer Molding | Injection Molding | Phenolic Molding

We use 4 primary molding methods:

Compression Molding
Compression molding consists of placing a pre-measured rubber charge directly into the mold cavity and compressing under a stated temperature for a calculated amount of time. Currently used in the manufacture of components that requires different materials to be layered on top of each other.

Transfer Molding

Transfer molding occurs when a rubber charge is measured out to encompass the entire cavity volume, then placed into the transfer pot where a piston will force the rubber through the sprue and into the cavity. Once this has taken, the rubber will sit at a stated temperature for a calculated amount of time, until the desired cure level is reached. This process is currently used in applications where a customer has a requirement for rubber to be injected around or into detailed areas.

Injection Molding
Injection molding is used for the production of high volume parts due to the fast manufacturing process. This process requires a pre-determined volume of rubber to be fed into the press, warmed to viscosity and shot into the mold where it will sit in temperature until the desired cure is met.

Phenolic Molding
Phenolic molding involves a fiber reinforced resin, either granular or strands of fiber, to mold a part that is designed for excellent heat resistance and dimensional stability. The molding process at GP Rubber consists of compression or transfer as listed above.
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