What kinds of Vacuum pumps are suitable for used for silicone heat transfer label forming machine?

For a silicone heat transfer label forming machine, the vacuum pump must provide stable suction to assist in molding, de-airing, and ensuring bubble-free silicone labels. The commonly used vacuum pumps for this application are:

1. Rotary Vane Vacuum Pump (Oil-Sealed)

Type: Positive displacement pump

Vacuum Level: 0.1 mbar (100 microns)

Why?

Provides strong and consistent vacuum

Works well for removing trapped air in silicone forming

Reliable and widely used in molding applications

2. Dry Scroll Vacuum Pump

Type: Dry (oil-free) vacuum pump

Vacuum Level: 1 mbar to 0.1 mbar

Why?

No oil contamination (cleaner process)

Low maintenance and long lifespan

Suitable for sensitive applications like silicone label molding

3. Diaphragm Vacuum Pump

Type: Dry vacuum pump

Vacuum Level: 1 to 100 mbar

Why?

Ideal for small-scale machines

Oil-free operation prevents contamination

Energy-efficient but may not achieve deep vacuum

Best Choice?

If high vacuum and efficiency are needed → Rotary Vane Pump

If cleaner operation and no oil contamination are required → Dry Scroll Pump

If low vacuum is sufficient and cost is a concern → Diaphragm Pump

For industrial-scale production, a rotary vane pump is the most common choice. Do you need specific pump model recommendations?