A Twin Screw Extruder not only shares the common operation
Principles with a single screw extruder: solid conveying, melting, admixture of pressurizing and pumping up, etc., but also owns its distinct characteristics. There are several factors that tackle the study of basic principles of co-rotating twin screw extruder, such as the late research of extrusion theory, various types, complex screw geometry, and complicated extruding process.
Basically speaking, the study of twin screw extruding theory is still at the initial stage, which indicates that the study is still more art than science. There are three links of its operation principles according to the extruding process:
The design of twin screw extruder and optimization of extruding process could be improved by material change laws, conveying theory ,including convey of solid and melt, also gas filling and ejecting characteristics, which can form a mathematics and physical model in the extruding process.