Schematic view of a gear pump

Gear pumps are less energy consuming than extraders and therefore implemented to reduce energy consumption. 

This technique is applicable where the polymer is already melted. Pelletisation of the polymer is sometimes carried out after compounding, which is a downstream operation outside the scope of this document. 

For compounding extrusion, the least energy is intended to be consumed. Therefore, online compounding is preferred over offline compounding because, in the ease of offline extrusion, another melting of the product is required. The choice of offline compounding also relates to the requirements of the market. 

Cross-media effects No cross-media effects known. 

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Figure 12.1 Schematic view of a gear pump Achieved environmental benefits...

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