Coperion's Melt Pump MP

For the necessary pressure build-up for the melt filtration

Use of a melt pump is necessary in individual cases in plants for processing and pelletizing polyolefins. It ensures the necessary pressure build-up for the melt filtration and pelletizing at a very low energy input.

We equip our ZSK high-performance compounding system with melt pumps from our own production for these individual cases. Their design is the result of years of development work and has been proven in practice many times.

A pair of gears with straight involute gear teeth runs in polymer-lubricated, hydrodynamic sliding bearings. These components are built into a housing which is closed off from the outside on both sides by covers and the threaded shaft seals operating without contact inside. The exact process design, e.g. the type of cooling and the size of the operating clearances, are calculated and determined project and product-specific by our experts. The melt pump has either a single or twin-shaft drive.

Advantages at a glance

  • Compounder, melt pump and pelletizer from one provider
  • Economical solution
  • Maximum product quality in long-term operation
  • Sizes of the melt pumps are adapted to ZSK twin screw extruder sizes
  • Individual adaptation to the project requirements
  • Efficient cooling

Related Industries

  • Plastics

Technical Data

Technical data MP 280 MP 360 MP 450 MP 500 MP 560
Throughput rate [t/hr] 8-20 15-40 30-70 35-85 50-110
Weight [t] 5 9 18 25 34
Single- and twin-shaft drive [kW] 250-500 500-1,000 900-1,800 1,100-2,200 1,500-3,000
Cooling variants          
Shaft cooling x x x x x
Combined shaft and bearing cooling x x x x x


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