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Extrusion of Rubber Compounds and Highly Filled Thermoplastics through Coathanger Dies

  • Y. Wang
Published/Copyright: May 27, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 6 Issue 4

Abstract

The isothermal flow of plastic fluids in coathanger dies is studied. A general three-dimensional finite element code is developed for the flow analysis purpose. The pressure distribution, the velocity distribution and the transverse flow rate distribution are calculated. The yield value of filled compounds gives rise to a mobile plug in the flow channel. The development of plug zone along the flow direction is also shown by the finite element analysis. The effect of the die geometry on the transverse flow rate distribution is critically discussed. It is found that the cross sections of the flow channel in a coathanger die has the shape of a dog bone or a dumbell which make a nearly even transverse flow rate distribution possible.

* Mail address: Prof. Dr. Y. Wang, Department of Chemical Engineering, Tunghai University, Taichung, Taiwan, Republic of China.
Received: 1990-11-8
Accepted: 1991-4-18
Published Online: 2013-05-27
Published in Print: 1991-12-01

© 1991, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Review Paper
  4. Existing Scale-up Rules for Single-screw Plasticating Extruders
  5. Internal Mixers
  6. Scale-up Effect in Internal Mixers
  7. Mixing and Extrusion of High Silica and all Silica-natural Rubber Compounds
  8. Screw Extrusion
  9. An Analytical Model of Partial and Thorough Melting in Single-screw Extruders
  10. Dimensionless Non-Newtonian Isothermal Simulation and Scale-up Considerations for Modular Intermeshing Corotating Twin Screw Extruders
  11. Erratum
  12. Die Extrusion
  13. Extrusion of Rubber Compounds and Highly Filled Thermoplastics through Coathanger Dies
  14. Pressure Oscillations during Capillary Extrusion of High Density Polyethylene
  15. Frequency Analysis of Pressure Fluctuations in a Single Screw Extruder
  16. Fibers and Films
  17. Orientation and Mechanical Property Development in the Melt Spinning of Fibers from Polyetherimide and Polyarylate
  18. Study on the Formation of β-Crystalline from Isotactic Polypropylene Fiber
  19. Biaxially-oriented Polyethylene Films by Compression of Injected Moldings
  20. Modelling of the Cooling of Semi-crystalline Polymers during their Processing
  21. Molding
  22. Non-isothermal Mold Filling and Curing Simulation in Thin Cavities with Preplaced Fiber Mats
  23. Predicting the Skin-Core Boundary Location in Injection Moldings
https://doi.org/10.3139/217.910311

Articles in the same Issue

  1. Contents
  2. Contents
  3. Review Paper
  4. Existing Scale-up Rules for Single-screw Plasticating Extruders
  5. Internal Mixers
  6. Scale-up Effect in Internal Mixers
  7. Mixing and Extrusion of High Silica and all Silica-natural Rubber Compounds
  8. Screw Extrusion
  9. An Analytical Model of Partial and Thorough Melting in Single-screw Extruders
  10. Dimensionless Non-Newtonian Isothermal Simulation and Scale-up Considerations for Modular Intermeshing Corotating Twin Screw Extruders
  11. Erratum
  12. Die Extrusion
  13. Extrusion of Rubber Compounds and Highly Filled Thermoplastics through Coathanger Dies
  14. Pressure Oscillations during Capillary Extrusion of High Density Polyethylene
  15. Frequency Analysis of Pressure Fluctuations in a Single Screw Extruder
  16. Fibers and Films
  17. Orientation and Mechanical Property Development in the Melt Spinning of Fibers from Polyetherimide and Polyarylate
  18. Study on the Formation of β-Crystalline from Isotactic Polypropylene Fiber
  19. Biaxially-oriented Polyethylene Films by Compression of Injected Moldings
  20. Modelling of the Cooling of Semi-crystalline Polymers during their Processing
  21. Molding
  22. Non-isothermal Mold Filling and Curing Simulation in Thin Cavities with Preplaced Fiber Mats
  23. Predicting the Skin-Core Boundary Location in Injection Moldings
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