Abstract
In this chapter, a simplified analysis leads to equations relating output, pressure and screw speed for the melt pumping section for several typical screw types. The flow patterns within the screw and pressure profiles along it are discussed, together with an examination of leakage flow. Graphical presentations are used to analyse the output/pressure characteristics of the screw/die combination, for simple and some more complex situations, including venting. Corrections to the simplified equations are discussed, leading to those due to pseudoplastic and non-isothermal conditions. The mechanisms of solids conveying and melting are covered in Chapter 7.
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© 1995 Springer Science+Business Media Dordrecht
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Stevens, M.J., Covas, J.A. (1995). Principles of melt flow in single-screw extruders. In: Extruder Principles and Operation. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0557-6_6
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DOI: https://doi.org/10.1007/978-94-011-0557-6_6
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4247-5
Online ISBN: 978-94-011-0557-6
eBook Packages: Springer Book Archive