Continuous Screen Changer

A Continuous Screen Changer (CSC), primarily a double-piston or dual-bolt hydraulic system, ensures uninterrupted melt filtration in plastic extrusion by incorporating two or more screen cavities; when one screen is contaminated, the hydraulic cylinder moves the corresponding piston out for screen replacement and venting, while the melt flow is instantaneously diverted through the clean screen remaining in the flow path, thus eliminating production downtime, minimizing pressure fluctuation, maintaining consistent melt quality, and being vital for high-contamination applications like recycling, compounding, and sheet production.