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Pressure generation mechanisms in the feed section of screw extruders
Author(s) -
Lovegrove J. G. A.,
Williams J. G.
Publication year - 1974
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.760140809
Subject(s) - section (typography) , mechanics , plastics extrusion , centrifugal force , materials science , mechanical engineering , computer science , engineering , composite material , flow (mathematics) , physics , operating system
The generation of pressure in the feed section of an extruder is analyzed. It is concluded that body forces must be considered since they provide the necessary conditions for pressure initiation. Solutions are given which take into account gravity forces in both vertical and horizontal screws together with centrifugal force. Some numerical results are also given which illustrate the practical importance of these effects.