Cohesive‐driven particle circulation in the solids conveying zone of a single‐screw extruder

Abstract Aspects of heat transfer within the solids conveying zone of a single‐screw extruder were studied by using a specially constructed drum testing apparatus. Experiments were conducted with linear low‐density polyethylene, polystyrene (PS), and polypropylene (PP) samples by examining their transient temperature profile while the heated drum was stationary or moving. In accordance with classic solids conveying theory, the granular beds of …