Maintaining a consistent, stable extrusion pressure is critical for reciprocating screw extrusion blow molding machines when processing regrind materials.

The AutoScreen™ MAX, using the EPC system, maintains a stable, consistent extrusion pressure during the complete reciprocating extrusion blow molding cycle!

Using AutoScreen's™ PLC controller the desired pressure delta between the inlet and outlet sides of the AutoScreen™ is set. The EPC maintains the pressure delta automatically, regardless of changes in the polymer's bulk density or contaminate level. This is particularly beneficial when processing regrind or off spec materials. To keep the pressure delta constant, the PLC automatically controls the amount of fresh filter screen being introduced. The melt pressure leaving the AutoScreen™ and being delivered to the blow mold is always maintained. The result is a continuous, stable and uninterrupted reciprocating screw extrusion blow molding process.