Extruders & Compounding Machines

ZSK MEGAcompounder

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High-capacity extruders for polyolefins

The twin screw extruder ZSK MEGAcompounder from Coperion is considered a milestone in the development of the high-performance compounding plants for the production of polyolefins. The extremely high productivity of the system is the result of more than 60 years of continuous research and development.

The ZSK MEGAcompounder series is ideally suitable for the economical processing of polyolefins. It constantly achieves maximum product quality especially in continuous processes with a high energy requirements. Its modular design principle allows optimal adaptation to every process. Whether it is a matter of continuously stabilizing, homogenizing and pelletizing LLDPE, HDPE or PP powder or concentrating a melt solution – with our many years of knowhow we configure the ZSK MEGAcompounder and the system auxiliary equipment to your individual process requirements. You achieve maximum throughput rates with the greatest possible cost effectiveness and the highest product quality with our systems.

The current series features a specific torque of 12.5 Nm/cm3. This brings polyolefin processing to the throughput rate of 135 t/h and beyond.

Advantages of the ZSK MEGAcompounder series

  • Specific torque of 12.5 Nm/cm3
  • Good intake and conveying properties
  • Gentle and stable melting of the powder (even at reduced throughput rate)
  • Good homogenization of additives in the polymer melt
  • Effective pressure build-up with low energy input
  • Maximum power density
  • Gentle product handling for maximum quality
  • Maximum productivity
  • Large number of application-specific solutions to increase throughput and productivity
  • Very wide range of wear protection solutions
  • Comprehensive process engineering support
  • High reliability and proven technology of the machines
  • Comprehensive after-sales services by worldwide Coperion service network

Related Industries

  • Plastics
  • Chemicals

Typical areas of application of the ZSK MEGAcompounder

  • Compounding and pelletizing of polyolefin powders
  • Pelletizing of polymer melts and elastomers
  • Discharge of LDPE/EVA from LPS
  • Devolatilization of polymer and rubber solutions
  • Processing of bimodal polyethylene

Production capacities

PP Throughput rates up to approx. 100 t/h
LLDPE  Throughput rates up to approx. 125 t/h
HDPE Throughput rates up to approx. 135 t/h
LDPE Throughput rates up to approx. 80 t/h


Technical Data of the ZSK MEGAcompounder

ZSK MEGAcompounder ZSK 177 Mc ZSK 250 Mc ZSK 320 Mc ZSK 350 Mc ZSK 380 Mc ZSK 420 Mc
Max. torque per shaft [Nm] 39,000 107,000 222,000 311,000 394,000 394,000
Spec. torque Md/a3 [Nm/cm3] 12,5 12,5 12,5 12,5 12,5 Increased drive power upon request
Max. screw speed [min-1] 550 500 400 350 320 Increased drive power upon request
Max. drive power N [kW] 4,500 11,200 18,600 22,800 26,400 Increased drive power upon request
Screw diameter [mm] 177 248 315 352 380 420

 Mc = MEGAcompounder

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