Skip to main content
Article
Licensed
Unlicensed Requires Authentication

Theoretical and Experimental Investigations of the Melting of Pellets in Co-Rotating Twin-Screw Extruders

  • and
Published/Copyright: May 28, 2013
Become an author with De Gruyter Brill
Submit Manuscript Author Information
International Polymer Processing
From the journal International Polymer Processing Volume 11 Issue 2

Abstract

Knowledge of the plasticizing behavior in tightly intermeshing, co-rotating twin-screw extruders is of crucial importance for assessing the compounding process. Experiments were conducted on a laboratory extruder in order to establish the parameters that influence the melting process. Solidified samples of material were taken from the screw and microtome cuts produced from the plasticizing section. These were then assessed on the basis of image analysis. This visualization of the solid and molten phases which are present simultaneously together with the distribution of the two phases made it possible to quantify the reduction that occurs in the amount of solid material over the length of the screw configuration employed.

A model is additionally presented for the calculation of the melting lengths and the melting profiles. This works on the basis of individual particles which are uniformly dispersed in the polymer melt. Allowance is made for the temperature increase in the solid material conveying section. A comparison of calculated and experimentally determined melting lengths revealed a satisfactory level of agreement.

* Mail address: Prof. Potente, University of Paderborn, Pohlweg 47–49, 33098 Paderborn, Germany
Published Online: 2013-05-28
Published in Print: 1996-05-01

© 1996, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Eighteenth in a Series: Toshiba Machine
  5. Screw Extrusion
  6. Theoretical and Experimental Investigations of the Melting of Pellets in Co-Rotating Twin-Screw Extruders
  7. An Improved Flow Simulation Model for a Tangential Counter-Rotating Twin Screw Extruder
  8. Modeling and Experimental Study of the Flow in a Simplified Cavity Transfer Mixer
  9. An Analytical Model of the Conveying Behaviour of Closely Intermeshing Co-rotating Twin Screw Extruders
  10. Reactive Processing
  11. Simulation of Continuous Polymerization in a Modular Intermeshing Co-rotating Twin Screw Extruder
  12. Reactive Blending in a Twin Screw Extruder
  13. Die Extrusion
  14. Viscoelastic Simulations of Stratified Bicomponent Extrusion through Slit Dies
  15. Fibers
  16. Spinnability of Polymer Melts – a Complex Problem in Basic Research1)
  17. Molding
  18. Structure and Properties of Inflation Films of β-Phase Nucleating Agent-Added Polypropylene
  19. Inverse Modeling of Injection Molding Thermal Stresses to Optimize Temperature and Pressure History
  20. An Assessment of Thermal Stresses in Injection Moulded ABS Copolymer
  21. Rapid Communications
  22. Experimental Study on the Injection Compression Molding of Parts with Precision Contours
https://doi.org/10.3139/217.960101

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Eighteenth in a Series: Toshiba Machine
  5. Screw Extrusion
  6. Theoretical and Experimental Investigations of the Melting of Pellets in Co-Rotating Twin-Screw Extruders
  7. An Improved Flow Simulation Model for a Tangential Counter-Rotating Twin Screw Extruder
  8. Modeling and Experimental Study of the Flow in a Simplified Cavity Transfer Mixer
  9. An Analytical Model of the Conveying Behaviour of Closely Intermeshing Co-rotating Twin Screw Extruders
  10. Reactive Processing
  11. Simulation of Continuous Polymerization in a Modular Intermeshing Co-rotating Twin Screw Extruder
  12. Reactive Blending in a Twin Screw Extruder
  13. Die Extrusion
  14. Viscoelastic Simulations of Stratified Bicomponent Extrusion through Slit Dies
  15. Fibers
  16. Spinnability of Polymer Melts – a Complex Problem in Basic Research1)
  17. Molding
  18. Structure and Properties of Inflation Films of β-Phase Nucleating Agent-Added Polypropylene
  19. Inverse Modeling of Injection Molding Thermal Stresses to Optimize Temperature and Pressure History
  20. An Assessment of Thermal Stresses in Injection Moulded ABS Copolymer
  21. Rapid Communications
  22. Experimental Study on the Injection Compression Molding of Parts with Precision Contours
Downloaded on 23.4.2026 from https://www.degruyterbrill.com/document/doi/10.3139/217.960101/html?lang=en
Scroll to top button