Turbo-Screw of the Extruder

To minimize viscous heat generation in the channels, the Turbo-Screw is designed with a multiflight. 

Numerous openings on the flight cause the polymer melt to flow from the pushing side to the trailing side of the flight. 

This cross-flight flow results in efficient mixing and improved heat transfer. A perspective view of the Turbo-Screw is shown in Fig.