Visualization studies of the solid conveying in the counter-rotating non-intermeshimg twin screw extruders

A non - intermeshing twin screw extruder was equipped with several glass windows on the top of barrel segments. The authors carried out visualization studies of the extrusion process, found many interesting solid conveying phenomena including three modes of solids conveying ( will be shown in the videotape). The authors derived three solid conveying models, first for the low and the second for the higher feeding rates, the third for the flooding feed. Experimental data were generated to compare with the model predictions.