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Pressure development in the melting zone of a single‐screw extruder
Author(s) -
Lindt J. T.
Publication year - 1981
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.760211708
Subject(s) - materials science , plastics extrusion , mechanism (biology) , channel (broadcasting) , composite material , mechanics , melting temperature , electrical engineering , engineering , philosophy , physics , epistemology
An analysis is given of the pressure generation mechanism in the tapered channel of a single‐screw extruder. It is shown that when increasing the throughput the pressure build‐up capacity of the melting zone tends to decrease. As a result, severe pressure drops may occur in the tapered sections. A relationship between the pressure profile and the melting mechanism (solid bed/melt pool configuration) is described in terms of the cross‐channel melt circulation.