Overview of Twin Screw Extruders

The following three tables give a brief overview of important aspects of twin screw extruders. Table 10.7 compares intermeshing to non-intermeshing twin screw extruders. 

Screws have equal pitch Effective self-wiping action 

Limited number of screw geometries allow fully self-wiping action 

Sliding action in intermeshing region, most material will bypass intermeshing region 

Fair pumping capability, limited pressure development capability 

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