Simulation of Blown-Film Process Taking Account of Cooling-air Effect
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O. Akaike
Abstract
Numerical simulation of blown-film process of plastics provides a tool for air ring designs and suitable polymer properties. Although cooling-air plays a key role in the process ability and film properties, there have been few research works taking correct account of the cooling-air effect. Numerical analyses of heat transfer from the surface of molten polymer to cooling-air were conducted using precise turbulence models and then simulations of bubble shape of blown-film process were performed under the air pressure and the thermal boundary conditions estimated from the numerical analyses of cooling-air. The film bubble shape predicted has coincided well with experimental data and it is confirmed that the bubble stability is strongly dominated by characteristics of cooling-air flow and heat transfer near the bubble surface.
© 1999, Carl Hanser Verlag, Munich
Articles in the same Issue
- Editorial
- First of a Series: Pioneering Polymer Industry Developments: Bayer and the First Synthetic RubberFirst of a Series
- Internal Mixer
- Modeling Non-isothermal Mixing in a Rotor Mixer
- Screw Extrusion/Mixing
- Chrome Nitride Coatings for Applications in Plastics Processing
- Using Computational Fluid Dynamics to Investigate the Flow of a Viscous Fluid in a Cavity with Oscillating Boundaries
- Simulation of Flow in an Intermeshing Modular Counter-rotating Twin Screw Extruder: Non-Newtonian and Non-Isothermal Behavior
- Reactive Extrusion
- Bulk and Dispersed Phase Polymerization of Urethane in Twin Screw Extruders
- Die Extrusion
- Wire Coating by Drawdown of an Extruded Annular Melt
- Fibers and Films
- Structure Development in Melt Spinning Polypropylene-EPM Blends and Dynamically Vulcanized Polyolefin TPEs
- Simulation of Blown-Film Process Taking Account of Cooling-air Effect
- Molding
- Analysis of Shrinkage Development of Injection Moulded PS Samples
- Optimization of the Weldline Strength in Gas-assist Injection Molded Thermoplastic
- Injection Velocity Control Using A Self-tuning Adaptive Controller
Articles in the same Issue
- Editorial
- First of a Series: Pioneering Polymer Industry Developments: Bayer and the First Synthetic RubberFirst of a Series
- Internal Mixer
- Modeling Non-isothermal Mixing in a Rotor Mixer
- Screw Extrusion/Mixing
- Chrome Nitride Coatings for Applications in Plastics Processing
- Using Computational Fluid Dynamics to Investigate the Flow of a Viscous Fluid in a Cavity with Oscillating Boundaries
- Simulation of Flow in an Intermeshing Modular Counter-rotating Twin Screw Extruder: Non-Newtonian and Non-Isothermal Behavior
- Reactive Extrusion
- Bulk and Dispersed Phase Polymerization of Urethane in Twin Screw Extruders
- Die Extrusion
- Wire Coating by Drawdown of an Extruded Annular Melt
- Fibers and Films
- Structure Development in Melt Spinning Polypropylene-EPM Blends and Dynamically Vulcanized Polyolefin TPEs
- Simulation of Blown-Film Process Taking Account of Cooling-air Effect
- Molding
- Analysis of Shrinkage Development of Injection Moulded PS Samples
- Optimization of the Weldline Strength in Gas-assist Injection Molded Thermoplastic
- Injection Velocity Control Using A Self-tuning Adaptive Controller
