In almost all fields of rubber extrusion, the Cold Feed Extruders are fast replacing the conventional Hot Feed Extruders. The elimination of the warm-up mill before feeding a cold feed extruder contributes to economic sense and reduced heat cycle for the rubber compound. The Cod Feed extruders also improve the geometric stability of the extrusion. The final die pressure achievable is also 30 percent higher. Well defined zone temperature controls are possible for scroll, barrel and die head with separate circulation systems for each zone resulting in superior quality for the product.