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Materiale Plastice
https://doi.org/10.37358/Mat.Plast.1964

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ISSN 0025-5289
ISSN 2668-8220 (online)
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Materiale Plastice, Volume 52, Issue 1, pp. (2015)




Cosmin V. JINESCU, Nicoleta TEODORESCU Extruder Performance based on a Correlated Extruder Head-screw-barrel Unit Working Field


Abstract:
A number of inventions, and theoretical and experimental research allowed to increase the thermal homogenous melt flow-rate delivered by the screw. On the other hand, quality of the extruded product depends on geometrical considerations of the extrusion head and on a large scale on the rheological behaviour (viscous and elastic) of the polymer melt. Non-harmonizing the design of the screw-barrel unit with the construction of the extrusion head can lead to low-quality products. In this paper, the extrusion head working field was drawn based on limitations imposed by the screw-barrel unit, i.e.: maximum flow-rate assuring required melt thermal homogeneity; - maximum flow-rate for which the heating system on the barrel (and screw, eventually) assures the extrusion temperature; -minimum flow-rate corresponding to screw diameter. Keywords: extruder head working field, extruder performance, rheological behaviour, screw-barrel unit



Issue: 2015 Volume 52, Number 1
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