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A New Style Single Screw Extruder with Improved Plastification and Output Power

Published/Copyright: June 3, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 17 Issue 4

Abstract

A single-screw-extruder is presented, consisting of a barrel with grooved feed zone (helical grooves), a grooved melting zone (axial or helical grooves) and a barrier-screw with mixing and shearing elements. Compared with extruders with a smooth melting zone, significant process improvements are achieved regarding mass throughput, pressure build up, melt temperature, melt homogeneity, feed-zone cooling, processing wall-slipping polymers, abrasive wear, residence time, total degree of efficiency and economy. The processing principles of the new extruder are explained. Experimental results confirm the theoretical predictions. The system has proven to be very worthwile in more than 100 extrusion blow molding machines since 3 years.

* Mail address: E. Grünschloβ, Institut fuer Kunststofftechnologie, University of Stuttgart, Boeblingerstrasse 70, D-70199 Stuttgart, Germany
Received: 2002-7-24
Accepted: 2002-7-25
Published Online: 2013-06-03
Published in Print: 2002-12-01

© 2002, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Editorial
  2. Structure Development in Polyolefin Processing
  3. Screw Extrusion
  4. A New Style Single Screw Extruder with Improved Plastification and Output Power
  5. Visualisation and Analysis of the Flow along the Kneading Block of a Twin-screw Extruder
  6. Resonant and Invariant Advection in Single-Screw Extrusion
  7. Compounding
  8. PP-based Model Compounds as Tools for the Development of High-impact-ethylene-propylene Copolymers
  9. Die Extrusion
  10. Modelling of the Flow in the Distribution Plate of a Spin Pack
  11. Free-radical Reactions and Thermal Effects in PE during Pipe Extrusion
  12. Calendering
  13. Simultaneous Calculation of Roll Deformation and Polymer Flow in the Calendering Process
  14. Fiber and Film
  15. Investigation of Bubble Instabilities in Film Blowing Process
  16. Injection Molding
  17. Flow Visualization of Filling Process during Micro-Injection Molding
  18. Thermoforming
  19. The Role of Tool/Sheet Contact in Plug-assisted Thermoforming
  20. A Comparison of the Axisymmetric and Planar Elongational Viscosities of PE-LD
  21. Pultrusion
  22. Polymer Melt Impregnation of Glass Roving
  23. Reaction Injection Molding
  24. Operational and Design Study of RIM Machines
https://doi.org/10.3139/217.1703

Articles in the same Issue

  1. Editorial
  2. Structure Development in Polyolefin Processing
  3. Screw Extrusion
  4. A New Style Single Screw Extruder with Improved Plastification and Output Power
  5. Visualisation and Analysis of the Flow along the Kneading Block of a Twin-screw Extruder
  6. Resonant and Invariant Advection in Single-Screw Extrusion
  7. Compounding
  8. PP-based Model Compounds as Tools for the Development of High-impact-ethylene-propylene Copolymers
  9. Die Extrusion
  10. Modelling of the Flow in the Distribution Plate of a Spin Pack
  11. Free-radical Reactions and Thermal Effects in PE during Pipe Extrusion
  12. Calendering
  13. Simultaneous Calculation of Roll Deformation and Polymer Flow in the Calendering Process
  14. Fiber and Film
  15. Investigation of Bubble Instabilities in Film Blowing Process
  16. Injection Molding
  17. Flow Visualization of Filling Process during Micro-Injection Molding
  18. Thermoforming
  19. The Role of Tool/Sheet Contact in Plug-assisted Thermoforming
  20. A Comparison of the Axisymmetric and Planar Elongational Viscosities of PE-LD
  21. Pultrusion
  22. Polymer Melt Impregnation of Glass Roving
  23. Reaction Injection Molding
  24. Operational and Design Study of RIM Machines
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