A STUDY OF FILLED VOLUME IN A CO-ROTATING TWIN-SCREW EXTRUDER USING ANALYSIS OF RESIDENCE TIME DISTRIBUTION

摘要

The co-rotating twin-screw extruder is a mixing vessel with a certain free volume. The actual filled volume inside the extruder is expected to change at different screw speeds and at different feed-rates. The screw configuration plays a role in the actual filled volume in the extruder. Hitherto, the precise determination of the filled volume, a matter of great importance to understand the process, was not practical. A method based on using Residence Time Distribution (RTD) to determine filled volume is developed and presented in the form of a simple block diagram.