Continuous Screen Changer for Melt Filtration in Foam Extrusion

screen changer foam extrusion polymer melt filtration

HITECH™ screen changers are installed world-wide in 4.5”/6.0” and 6.0”/8.0” tandem foam lines. They are used with equal success on foamed PS, PP, and PE.

  • Steady incremental rate of screen travel eliminates head pressure and melt pressure fluctuations due to screen clogging. As a result, the gauge is maintained within very close tolerances.
  • Formation of die lines is eliminated
  • There are no mechanical, metal-to-metal seals that can wear and begin to leak over time. Instead, cold circulating water form perfectly leak-proof seals. HITECH™  screen changers will not leak polymer or any of the blowing agent gas, even over many years of continuous operation.

HITEC™ belt type screen changers for plastic melt filtration are widely used in foam extrusion applications. Our continuous belt feed screen changers can be used on extruders from all the world’s leading extruder equipment manufactures.  Whether a retrofit of existing foam extrusion equipment or the purchase of a new foam extrusion line, HITECH™ screen changers have set the standard in polymer melt filtration equipment since 1969.