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Numerical Analysis of Cooling Air Systems in Film Blowing

  • D. Wolf , B. Feron and J. Wortberg
Published/Copyright: June 3, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 12 Issue 1

Abstract

Air rings, used today in film blowing systems, have been developed down the years through trial and error experiments. They represent the limiting factor concerning the efficiency of film blowing lines with respect to throughput and take-off speed. Numerical simulation of the cooling process in film blowing provides a tool for the design and optimization of future cooling systems. Individual process and geometric parameters can be changed interactively with the effects on flow and heat transfer processes being analysed and applied to similar situations. The knowledge acquired regarding the physical interactions in the cooling of blown film makes a targeted optimization possible. The purpose of this paper is to present the foundamentals for calculating turbulent air flows in blown film extrusion and, additionally, a model for complete FE-simulation of the flow and heat transfer processes. Furthermore, the achieved simulation results will be discussed.

* Mail address: J. Wortberg, Istitut für Konstruktionslehre und Kunststoffmaschinen, Universitüt-GH Essen, Essen, Germany
Received: 1995-4-12
Accepted: 1995-8-16
Published Online: 2013-06-03
Published in Print: 1997-03-01

© 1997, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Screw Extrusion
  6. Upgrading Recycled HDPE by Rheometer-Controlled Crosslinking
  7. Blend Morphology of Linear Low Density Polyethylene and Polystyrene in a Non-Intermeshing Twin Screw Extruder
  8. Mixing
  9. A Study on the Reactive Compatibilization of a PBT/LCP Blend: Catalyst Effect
  10. Influence of Processing Temperature on the Morphological and Mechanical Properties of a PC/TLCP Blend
  11. Fibers
  12. The Effect of Drawing and Annealing Conditions on the Structure and Properties of Bacterial Poly(3-hydroxybutyrate-co-3 hydroxyvalerate) Fibers
  13. Numerical Analysis of Cooling Air Systems in Film Blowing
  14. Moulding
  15. On the Simulation of Thermoplastic Injection Moulding Process
  16. Molding
  17. Rheology of Layered Thermoplastic Matrix Composites during Compression Molding
  18. Studies of the Trans-Quinacridone Nucleation of Poly-(ethylene-b-propylene)
  19. The Role of Long Molecules and Nucleating Agents in Shear Induced Crystallization of Isotactic Polypropylenes**
https://doi.org/10.3139/217.970038

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Screw Extrusion
  6. Upgrading Recycled HDPE by Rheometer-Controlled Crosslinking
  7. Blend Morphology of Linear Low Density Polyethylene and Polystyrene in a Non-Intermeshing Twin Screw Extruder
  8. Mixing
  9. A Study on the Reactive Compatibilization of a PBT/LCP Blend: Catalyst Effect
  10. Influence of Processing Temperature on the Morphological and Mechanical Properties of a PC/TLCP Blend
  11. Fibers
  12. The Effect of Drawing and Annealing Conditions on the Structure and Properties of Bacterial Poly(3-hydroxybutyrate-co-3 hydroxyvalerate) Fibers
  13. Numerical Analysis of Cooling Air Systems in Film Blowing
  14. Moulding
  15. On the Simulation of Thermoplastic Injection Moulding Process
  16. Molding
  17. Rheology of Layered Thermoplastic Matrix Composites during Compression Molding
  18. Studies of the Trans-Quinacridone Nucleation of Poly-(ethylene-b-propylene)
  19. The Role of Long Molecules and Nucleating Agents in Shear Induced Crystallization of Isotactic Polypropylenes**
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