What is the biggest difference between silicone extruder and rubber extruder

Because silicone is difficult to feed compared to rubber, the biggest difference between silicone extruder and rubber extruder is the biggest difference is the size of the screw compression ratio.

Silicone screw compression ratio is large, generally in the 2-2.5 or so, rubber screw compression ratio is small, hot feed screw is generally in the 1.3-1.4 or so, cold feed screw is generally in the 1.7-1.8 or so. At the same time, the silicone extruder is equipped with a forced feeding device to help silicone eat material.