Joseph Francis,P J; Dr.Rani,Joseph(Cochin University of Science And Technology, April 20, 1998)
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Abstract:
Starve feeding of single screw extruder was described as an
important means of improving the performance characteristics of the
extruder. In addition to such improvement with versatility, the starve
feeding technique also may affect the mechanical properties of the
extrudate since the heat transfer an(l mixing characteristics in the starve
fed and Hood fed extruders are not the same. Since the material is more
loosely packed in the channels of the starve fed extruder, there may be
greater bed mobility and uniformity. Further, the. thermal an(l shear
induced degradation are also less since possibilities of developing local
high temperatures are less compared to a densely compacted extruder
bed. This study has been undertaken mainly to explore the effect of
feeding rate on the mechanical properties of rubber and plastic extrudates
since the effect of feeding rate has not been analysed from this angle so
far.
Description:
Department of Polymer
Science and Rubber Technology
Cochin University of
Science and Technology