NFM: Reliable Counter-Rotating Non-Intermeshing Twin Screw Extruders

When it comes to counter-rotating non-intermeshing (CRNI) twin-screw extruders, NFM understands the importance of reliability in both design and performance. Everything we do centers around the philosophy that you should be able to depend on your polymer processing equipment day-in and day-out.

Originally designed by Welding Engineers Inc., NFM’s experts have mastered the science behind the manufacture of counter-rotating non-intermeshing twin-screw extruders. Our counter-rotating non-intermeshing twin-screw extruder systems have been in service for over 60 years processing virtually every plastic in the world.

The unique features of the non-intermeshing design create the highest free volume and the lowest shear of any twin-screw extrusion process. WE Series extruders enhance feed acceptance, provide superior distributive mixing, enable multistage feeding, and produce optimum venting to accommodate a wide variety of applications over a broad base of polymers. Our screw diameters range from 0.80in (20mm) to 10.00in (250mm).

WE Series Applications


  • Excellent Distributive Mixing
  • Low Shear
  • Ideal for Devolatilization
  • Excellent Drying
  • Fully customizable to your process

Test your application with NFM. Whether you’re looking to increase throughputs or to prove a new polymer innovation, NFM’s Process Development Lab is fully equipped to provide the help you need. With multiple CRNI lab extruders in service, including one of the only Flammable Liquids Pilot Plants in the United States, NFM can help optimize your process for improved profitability.

Put NFM to work on your next counter-rotating non-intermeshing twin-screw extruder challenge. Call us at 330-837-3868 or initiate a quote today.