Home Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
Article
Licensed
Unlicensed Requires Authentication

Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model

  • S. Sarafrazi and F. Sharif
Published/Copyright: April 6, 2013
Become an author with De Gruyter Brill

Abstract

Plastic films are largely produced using the film blowing process. Branched polymers such as LDPE are commonly used in this process to produce a variety of plastic films. In this study, recently developed eXtended Pom-Pom (XPP) model, which focuses on describing rheological behavior of branched polymers, is employed to analyze the non-isothermal flow in the film blowing process. Furthermore, the Nakamura equation for crystallization kinetics is employed to consider crystallization effects and improve prediction of the state of the stress in the film. Results of the numerical analysis show good agreement with the experimental values reported by Tas (1994) for the bubble shape and film velocity of the LDPE films. Predictions for the strain rates in machine and hoop directions which are critical for the estimation of the stress are also compared with the reported data and showed reasonably good agreement.


Mail address: Farhad Sharif, Department of Polymer Engineering, Amirkabir University of Technology, 424 Hafez Avenue, Tehran, Iran. E-mail:

References

Alaie, S. M., Papanastasiou, T. C., “Modeling of Non-Isothermal Film Blowing with Integral Constitutive Equations”, Int. Polym. Proc., 8, 5165 (1993)Search in Google Scholar

Beaulne, M., Mitsoulis, E., “Effect of Viscoelasticity in Film-Blowing Process”, J. Appl. Polym. Sci., 105, 20982112 (2007)10.1002/app.26325Search in Google Scholar

Bishko, G. B., et al., “Numerical Simulation of the Transient Flow of Branched Polymer Melts Through a Planar Contraction using the Pom-Pom Model”, J. Non-Newt. Fluid Mech., 82, 255273 (1999)10.1016/S0377-0257(98)00165-7Search in Google Scholar

Blackwell, R. J., et al., “Molecular Drag-strain Coupling in Branched Polymer Melt”, J. Rheol., 44, 121136 (2000)10.1122/1.551081Search in Google Scholar

Cain, J. J., Denn, M. M., “Multiplicities and Instability in Film Blowing”, Polym. Eng. Sci., 28, 15271541 (1988)10.1002/pen.760282303Search in Google Scholar

Cao, B., Campbell, G. A., “Viscoplastic-Elastic Modeling of Tubular Blown Film Processing”, Am. Inst. Chem. Eng. J., 36, 420430 (1990)10.1002/aic.690360311Search in Google Scholar

Doufas, A. K., McHugh, A. J., “Simulation of Film Blowing Including Flow-Induced Crystallization”, J. Rheol., 45, 10851105 (2001)10.1122/1.1392300Search in Google Scholar

Graham, R. S., et al., “Using the Pom-Pom Equations to Analyze Polymer Melts in Exponential Shear”, J. Rheol., 45, 275290 (2001)10.1122/1.1332999Search in Google Scholar

Harrison, P., et al., “Birefringence Measurements on Polymer Melts in an Axisymmetric Flow Cell”, Rheol. Acta., 41, 114133 (2002)10.1007/s003970200011Search in Google Scholar

Inkson, N. J., et al., “Predicting Low Density Polyethylene Melt Rheology in Elongational and Shear Flows with ‘Pom-Pom’ Constitutive Equation”, J. Rheol., 43, 873896 (1999)10.1122/1.551036Search in Google Scholar

Lee, K., et al., “Experimental Observation and Numerical Simulation of Transient ‘Stress Fangs’ within Flowing Molten Polyethylene”, J. Rheol., 45, 12611277 (2001)10.1122/1.1389316Search in Google Scholar

Lungu, C. M.: Eng. Thesis, McGill University, Montreal, Ouebec, Canada (2000)Search in Google Scholar

Luo, X. L., Tanner, R. I., “A Computer Study of Film Blowing”, Polym. Eng. Sci., 25, 620629 (1985)10.1002/pen.760251008Search in Google Scholar

McLeish, T. C. B., Larson, R. G., “Molecular Constitutive Equations for a Class of Branched Polymers: The Pom-Pom Polymer”, J. Rheol., 42, 81110 (1998)10.1122/1.550933Search in Google Scholar

Muke, S., et al., “Numerical Modeling and Experimental Verification of Blown Film Process”, J. Non-Newt. Fluid Mech., 116, 113138 (2003)10.1016/j.jnnfm.2003.09.002Search in Google Scholar

Muslet, I. A., Kamal, M. R., “Computer Simulation of the Film Blowing Process Incorporating Crystallization and Viscoelasticity”, J. Rheol., 48, 525550 (2004)10.1122/1.1718500Search in Google Scholar

Nakamura, K., et al., “Some Aspects of Non-Isothermal Crystallization of Polymers I. Relationship between Crystallization Temperature, Crystallinity and Cooling Conditions”, J. Appl. Polym. Sci., 16, 10771091 (1972)10.1002/app.1972.070160503Search in Google Scholar

Pearson, J. R. A., Petrie, C. J. S., “The Flow of a Tubular Film. Part 1. Formal Mathematical Representation”, J. Fluid Mech., 40, 119 (1970)10.1017/S0022112070000010Search in Google Scholar

Pearson, J. R. A., Petrie, C. J. S.,”The Flow of the Tubular Film. Part 2. Interpretation of the Model and Discussion of Solutions”, J. Fluid Mech., 42, 609625 (1970)10.1017/S0022112070001507Search in Google Scholar

Peters, G. W. M., et al., “On The Performance of Enhanced Constitutive Models for Polymer Melts in a Cross-Slot Flow”, J. Non-Newt. Fluid Mech., 82, 387427 (1999)10.1016/S0377-0257(98)00173-6Search in Google Scholar

Petrie, C. J. S., “A Comparison of Theoretical Predictions with Published Experimental Measurements on the Blown Film Process”, Am. Inst. Chem. Eng. J., 21, 275282 (1975)10.1002/aic.690210208Search in Google Scholar

Sirakov, I., et al., “Three-Dimensional Numerical Simulation of Viscoelastic Contraction Flows Using the Pom-Pom Differential Constitutive Model”, J. Non-Newt. Fluid Mech., 126, 163173 (2005)10.1016/j.jnnfm.2004.08.013Search in Google Scholar

Tas, P.: Ph.D. Thesis, Eindhoven University Of Technology, Eindhoven, The Netherlands, 1994Search in Google Scholar

Verbeeten, W. M. H., et al., “Differential Constitutive Equations for Polymer Melts: The Extended Pom-Pom Model”, J. Rheol., 45, 823843 (2001)10.1122/1.1380426Search in Google Scholar

Verbeeten, W. M. H., et al., “Viscoelastic Analysis of Complex Polymer Melt Flows Using the Extended Pom-Pom Model”, J. Non-Newt. Fluid Mech., 108, 301326 (2002)10.1016/S0377-0257(02)00136-2Search in Google Scholar

Ziabicki, A.: Fundamentals Of Fiber Formations, Wiley, New York (1976)Search in Google Scholar

Received: 2006-11-21
Accepted: 2007-8-6
Published Online: 2013-04-06
Published in Print: 2008-03-01

© 2008, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field
  5. Generation of Microcellular Foams by Supercritical Carbon Dioxidein a PMMA Compound
  6. Influence of Uniaxial Extension on the Mechanical Properties of PET and PEN Films
  7. Analysis of the Isothermal Compression in Nanoimprint Lithography Assuming a Power-Law Fluid
  8. Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
  9. Flow Analysis of Flat Spiral Dies and Comparison with Cylindrical Spiral Mandrel Dies
  10. Development of Polymer Blend Morphology along an Extruder with Different Screw Geometries
  11. A Mechanical Model for Stress Developmentin PA12 Tube Extrusion
  12. Shrinkage Analysis on Convex Shellby Injection Molding
  13. Melting Mechanism of Thermoplastic Elastomers and Comparison to Polyolefin Thermoplastic Melting Studies in a Single Screw Extruder
  14. Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres
  15. Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder
  16. Experimental Analysis of Heat Transfer in Rotational Molding Process
  17. Polyetheretherketone Films with Low Thermal Expansion for Flexible Printed Circuit Boards
  18. Experimental Study and Modeling of Flow Behavior and Orientation Kinetics of Layered Silicate/Polypropylene Nanocomposites in Start-up of Shear Flows
  19. Polystyrene/Phosphonium Organoclay Nanocomposites by Melt Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
Downloaded on 25.9.2025 from https://www.degruyterbrill.com/document/doi/10.3139/217.2010/html
Scroll to top button