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Some melt flow and mechanical design aspects of large extruders
Author(s) -
Fenner R. T.,
Williams J. G.
Publication year - 1971
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.760110606
Subject(s) - dimensionless quantity , plastics extrusion , materials science , flow (mathematics) , mechanical engineering , scale up , scale (ratio) , thermal , mechanics , composite material , thermodynamics , engineering , classical mechanics , physics , quantum mechanics
This paper examines two aspects in the design of large extruders. An analysis of the thermal problems in the flowing melt is given in terms of dimensionless groups and the results are applied to the scale‐up problem in extruder design. An analysis of the mechanical stability of extruder screws is also given including the effect of axial buckling and whirling. The results are examined as a possible limitation on extruder dimensions.