Polymer Processing Systems

Corporate | Global Directory | Languages

BKG® POLY Large Area Filter with Two Pistons for Continuous Operation

Normal operation:
8 screen cavities (100%) in the process

Not applicable

Screen change:
During a screen change two of the screen cavities (25%) are removed from the process, allowing for six of the screen cavities (75%) to remain in operation

The POLY is suitable for almost all polymerization processes (pelletizing, fiber, film). This system enables process runs to continue without any system shutdowns while changing the screen.


  • Low operating costs through the use of low-cost filter media (flat screen mesh); no cleaning and testing of the filter medium is necessary
  • Faster and safer screen change compared to filter pots (filter candles, filter discs)
  • Easy handling during a screen change since there is no need to use a hoist or lifting device
  • Optimized flow channel design (dead spaces free); short residence time eliminates degradation of the polymer
  • Fully automated venting procedure (via PLC) reduces operator intervention



  • Patented technology allows for 6 of the 8 screens to remain in production during a screen change 
  • Eight (8) oval-shaped screen cavities enable a large filter area in a compact and small housing 2 pistons with 4 oval-shaped screen cavities per piston
  • Optimized flow channels utilizing rheological data
  • Wear-free metallic sealing system – no additional seal required
  • Easily integrated into the line controls
  • Includes complete guard system, offering maximized safety for the operators