Self-cleaning twin-screw

Figure 3.35 Geometry description of a double-flighted, co-rotating, self-cleaning twin screw...

The fabrication of the polyester mixtures including a lubricant masterbatch, and a branching agent masterbatch is done in a corotating, self-cleaning twin screw extruder (51). 

The desired self-cleaning function led to the development of the intermeshing twin screw. The counter-rotating screw was discarded, because it tended to get blocked by solids and was a poor mixer attention focused instead on the intermeshing, co-rotating extruder. 

Erdmenger s patent for single-flighted and double-flighted self-cleaning kneading discs is considered to be the basic patent of the twin screw extruder. The patent describes the eccentric disc as well as the traditional profiles. 

The intermeshing twin-screw extruder has a self-cleaning effect that reduces... 

Depending on the exact geometry, self-cleaning co-rotating twin-screw extruders... 

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