Transfer Molding

Uncured Rubber is forced through a "runner system" mould with small gate point by a plunger.
The rubber then fills the cavities of the and the rubber begins to cure in the heated mould.
Once cycle times is reached, the part is removed from the mould.

Liquid Injection Molding

Low viscosity liquid silicone material is injected into the cavity in the mould much similar to that of plastic injection.
To increase yield in the production process,1 cavity mould and 2 core mould are built.
As one core is used, the injected product is removed from the other core.

Considerations for Injection Molding

- only one color molding, either black or translucent
- on material hardness is possible, ranging between 40-60 ShoreA
- Key height maximum 10 mm
- If conductive pill is to be used, there must be only Circular in
  shape
- Preferable for keymats with similar key shapes and heights
- Preferably used in the production of rubbermat for computer
  keyboards