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Melting model for intermeshing counter‐rotating twin‐screw extruders
Author(s) -
Wilczynski Krzysztof,
White James L.
Publication year - 2003
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10145
Subject(s) - barrel (horology) , materials science , pellets , melting point , composite material , calendering , plastics extrusion , work (physics) , mechanics , thermodynamics , physics
Previous experimental studies of melting of pellets in an intermeshing counter‐rotating twin‐screw extruder have shown that melting is initiated both between the screws and at the barrel. Models are developed for melting in both those regions. The melting between the screws is initiated by frictional work on the pellets by the calendering stresses between the screws. The melting action at the barrel is induced by a barrel temperature higher than the melting point and propagated by viscous dissipation heating of the melt film produced.