Chemical Reaction Processes via Twin Screw Extrusion

Chemical Reactions via Twin Screw Extrusion

Reactive extrusion describes a special process in extrusion technology in which individual components are bonded by a chemical reaction. Extrusion systems from Coperion are particularly suitable for the reactive extrusion process due to the excellent product handling and mixing properties.

Coperion has already developed many ZSK extrusion systems for a wide variety of chemical reaction processes. The continuous process ensures consistent, outstanding product quality. It can be reproduced at any time and only subjects the raw materials to low thermal stress.

The range of viscosities is very broad. Even highly viscous products, some of which may cause problems in the batch process, can be processed without difficulty using the ZSK extruder. A reliable scale-up from laboratory to production scale is possible at any time with the ZSK twin screw extruder.

Typical chemical reaction processes which have already been realized on ZSK twin screw extruders are PMMA, Polyamide 6 and TPU.

Typical end products

  • Technical components such as rollers, gears, drive belts, screens
  • Housings for electrical appliances
  • Components for the automotive industry such as wing mirror housings, bellows, decorative strips and panels
  • Sport shoe soles
  • Ice hockey skates and ski boots
  • Cable sheaths
  • Tubes and foils, also for medical technology
  • Artificial leather

Typical plant set-up for reactive extrusion shown by the example of linear thermoplastic polyurethane TPUs

Comprehensive product range

Coperion twin screw extruder ZSK twin screws


Due to its maximum flexibility in machine modifications the ZSK twin screw extruder of Coperion is the optimum system for reactive extrusion processes. With our comprehensive engineering know-how we design the ZSK extruder exactly to meet the requirements of your process.

Coperion Consulting


With our comprehensive range of services Coperion and Coperion K-Tron are able to ensure maximum productivity and operational reliability of your compounding lines.

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