Transfer molding

What is Rubber Transfer Molding?

Rubber transfer molding places uncured rubber into part of a mold called a pot. When the ram is closed, the rubber flows into the cavity through a runner and gate system. The elastomer remains under high pressure and temperature until curing is achieved.

The advantages of rubber transfer molding include:

• Mid-to-high volume production

• Shorter production cycle times than compression molding

• Support for complex geometries and tight tolerances

Rubber Transfer Molding Steps:

1. Uncured rubber is preformed to control weight, shape and specification

2. Rubber preform is placed into pot

3. Ram distributes (transfers) the rubber through the runner and gate system into the cavities

4. Mold remains closed under pressure and temperature to reach optimal cure

5. Parts are removed from the mold and the process is ready to begin again