Study on the Polymer Melt Flow in a Closely Intermeshing Counter-Rotating Twin Screw Extruder
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K. Wilczyński
Abstract
An extensive study has been presented on the polymer melt flow in a closely intermeshing counter-rotating twin screw extruder. A fully three-dimensional non-Newtonian FEM computations have been performed to design the screw pumping characteristics which may be implemented into the composite model of the process. ANSYS Polyflow software has been applied to model the melt flow in the machine. An analysis has been performed for the flow in the C-chamber, and the leakage flows have been identified over the calender gap, tetrahedron gap, flight gap, and side gap. Screw pumping characteristics have been calculated and modeled for screw elements at various power law indices. It has been observed that a thick flighted element due to the positive displacement effect has got high pumping capacity increasing with an increase of the power law index. A shearing element has got no pumping capacity, and in this case a pressure gradient must be applied to push the material through an element, and the gradient increases with an increase of the power law index. Negative pressure gradient has been observed for thick flighted elements at some simulation data, and a respective reorientation of the velocity flow field has been seen.
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© 2014, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Converging-Diverging Flow in a Novel Extruder and its Application in Film Blowing
- Modeling of Plasticating Injection Molding – Experimental Assessment
- Viscosity Analysis of a Polymer-Based Drug Delivery System Using Open-Source CFD Methods and High-Pressure Capillary Rheometry
- Thermal Properties and Morphology Characteristics of a PP Mono-Filament and its Foam
- Thermal and Tensile Behavior of HD-PE Films Containing Iron (III) Acetylacetonate after UV Irradiation
- Carbon Black Reinforced Thermoplastic Vulcanizates Based on High Impact Polystyrene/Styrene-Butadiene-Styrene Block Copolymer/Styrene-Butadiene Rubber Blends
- A Study of the Bubbles in UV Micro Roll-to-Roll Imprinting
- An Annular Rotating-Die Technique in Extrusion Process: Effect of Mandrel Rotating Speed on Extrudate Swell Behavior of HDPE Parison
- Investigation of the Structural Robustness of Deep Depth Injection Mold with Cavity Pressure and Mold Design
- Verifying the Melting Behavior in Single-Screw Plasticization Units Using a Novel Simulation Model and Experimental Method
- Processing of Polyetherimide/Cloisite 30B Nanocomposite by Vibration Casting Method
- Comparison between 1D and 3D Approaches for Twin-Screw Extrusion Simulation
- Study on the Polymer Melt Flow in a Closely Intermeshing Counter-Rotating Twin Screw Extruder
- The Influence of Moisture and Laminate Setup on the De-Consolidation Behavior of PA6/GF Thermoplastic Matrix Composites
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Converging-Diverging Flow in a Novel Extruder and its Application in Film Blowing
- Modeling of Plasticating Injection Molding – Experimental Assessment
- Viscosity Analysis of a Polymer-Based Drug Delivery System Using Open-Source CFD Methods and High-Pressure Capillary Rheometry
- Thermal Properties and Morphology Characteristics of a PP Mono-Filament and its Foam
- Thermal and Tensile Behavior of HD-PE Films Containing Iron (III) Acetylacetonate after UV Irradiation
- Carbon Black Reinforced Thermoplastic Vulcanizates Based on High Impact Polystyrene/Styrene-Butadiene-Styrene Block Copolymer/Styrene-Butadiene Rubber Blends
- A Study of the Bubbles in UV Micro Roll-to-Roll Imprinting
- An Annular Rotating-Die Technique in Extrusion Process: Effect of Mandrel Rotating Speed on Extrudate Swell Behavior of HDPE Parison
- Investigation of the Structural Robustness of Deep Depth Injection Mold with Cavity Pressure and Mold Design
- Verifying the Melting Behavior in Single-Screw Plasticization Units Using a Novel Simulation Model and Experimental Method
- Processing of Polyetherimide/Cloisite 30B Nanocomposite by Vibration Casting Method
- Comparison between 1D and 3D Approaches for Twin-Screw Extrusion Simulation
- Study on the Polymer Melt Flow in a Closely Intermeshing Counter-Rotating Twin Screw Extruder
- The Influence of Moisture and Laminate Setup on the De-Consolidation Behavior of PA6/GF Thermoplastic Matrix Composites
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts