Kreyenborg: Increase of throughput with melt pumps

Melt pumps form the core of modern extrusion lines. Their tasks include to build-up and ensure the necessary pressure at the respective tool. Thus also the operational demands of the extruder may be decreased in that way, that an efficiency increase of the complete line is achieved. An effect which also makes the retrofitting of a pump into existing lines interesting.

In extrusion lines which are working without melt pump the complete pressure for the process is built up by the extruder. A Kreyenborg melt pump effects the realisation of the necessary pressure and a constant volume flow at the extrusion tool and thus decreases the operational demands of the extruder in the line. Then the essential function of the extruder is limited to the melting and homogenising of the material as well as to the building up of the pump pressure.

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According to Kreyenborg GmbH (www.kreyenborg.de) the throughput of the complete line may be increased by 20–30 % with constant extruder output by the use of a Kreyenborg melt pump. The low investment costs for the retrofitting of a pump are not disproportionate to other possibilities which result in a corresponding increased efficiency. Furthermore owing to the higher line capacity the melt pump will pay for itself within the shortest time.

Kreyenborg GmbH, Münster