Method for the Optimisation of Screw Elements for Tightly Intermeshing, Co-rotating Twin Screw Extruders
-
H. Potente
Abstract
Demanding mixing tasks are usually solved through the use of tightly intermeshing, co-rotating twin screw extruders. Since both the barrel and the screw are of a modular design, the extruder can be optimised for a given task. In the framework of this investigation, the screw-element geometry for tightly intermeshing co-rotating twin screw extruders is optimised in order to achieve specific aims. The threaded elements have been optimised for different materials and operating conditions.
The investigation set out to achieve a screw-element geometry that would generate the maximum pressure gradient while, at the same time, ensuring that the temperature increase and the power consumption were kept to a minimum. The pressure profile, the temperature progression and the power consumption have been calculated on the basis of one-dimensional models of the type used in the SIGMA process simulation software. The geometrical data of the individual elements was varied with the aid of non-linear algorithms, and the quality of an individual geometry was assessed on the basis of quality functions. Subsequent to the theoretical optimisation, experimental analyses were performed for purposes of verifying the optimisation method used.
References
1Potente, H., Pape, J.: Paper presented at PPS-17 (2001)Search in Google Scholar
2Zelleröhr, M.: PhD Thesis, University of Paderborn (2000)Search in Google Scholar
3Gaspar Cunha, A.: PhD Thesis, University of Minho (1999)Search in Google Scholar
4Gaspar Cunha, A., Poulesquen, A., Vergnes, B., Covas, J. A.: Intern. Polym. Processing17, p. 201 (2002)10.3139/217.1701Search in Google Scholar
5Potente, H., Kretschmer, K.: Kunststoffe – Plast Europe91, p. 26, 76 (2001)Search in Google Scholar
6Kretschmer, K.: PhD Thesis, University of Paderborn (2004)Search in Google Scholar
7Potente, H., Bastian, M., Flecke, J.: Advances in Polymer Technology18, p. 147 (1999)10.1002/(SICI)1098-2329(199922)18:2<147::AID-ADV5>3.0.CO;2-XSearch in Google Scholar
8Potente, H., Kretschmer, K., Pohl, T.: Paper presented at PPS-18 (2002)Search in Google Scholar
9Booy, M. L.: Polym. Eng. Sci. 18, p. 973 (1978)10.1002/pen.760181212Search in Google Scholar
10Lasdon, L. S., Waren, A. D., Jain, A., Ratner, M.: ACM Transactions on Mathematical Software4, p. 34 (1978)10.1145/355769.355773Search in Google Scholar
11Lasdon, L. S., Smith, S.: ORSA Journal on Computing4, p. 28 (1992)Search in Google Scholar
© 2006, Hanser Publishers, Munich
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Pressure and Temperature Dependence of LDPE Viscosity and Free Volume: The Effect of Molecular Structure
- Correlations between Injection Molding Parameters, Morphology and Mechanical Properties of PPS Using Artificial Neural Networks
- Investigations into Kinematic Reversal in Non-isothermal Flows in Single-screw Machines
- The Effect of Post-extrusion Conditions in Ribbon Extrusion of Polymer Blends
- Effect of the Chemical and Morphological Conditions of the Die Wall on the Extrusion of Linear Polyolefins
- Investigation of the Heat Affected Zone of Hot-gas Welded PP Joints
- Method for the Optimisation of Screw Elements for Tightly Intermeshing, Co-rotating Twin Screw Extruders
- Rheology and Processing of Molten Poly(methyl methacrylate) Resins
- PLLA Morphology Controlled by Dry-cast Process
- Two Component Injection Molding of Phase Separating Blends
- A Low Force Valve for Dynamic Control of Molten Plastics in a Mold
- Influence of Drawing and Temperature on the Optical and Structural Properties of Monofilament PP Sutures
- Mechanical Properties of Rubber-toughened Post-industrial Glass-fiber-reinforced PA66
- Thermal Flow Instability in Metal Injection Molding: Experiment and Simulation
- Review Paper
- State of the Art: Recycling of EPDM Rubber Vulcanizates
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Pressure and Temperature Dependence of LDPE Viscosity and Free Volume: The Effect of Molecular Structure
- Correlations between Injection Molding Parameters, Morphology and Mechanical Properties of PPS Using Artificial Neural Networks
- Investigations into Kinematic Reversal in Non-isothermal Flows in Single-screw Machines
- The Effect of Post-extrusion Conditions in Ribbon Extrusion of Polymer Blends
- Effect of the Chemical and Morphological Conditions of the Die Wall on the Extrusion of Linear Polyolefins
- Investigation of the Heat Affected Zone of Hot-gas Welded PP Joints
- Method for the Optimisation of Screw Elements for Tightly Intermeshing, Co-rotating Twin Screw Extruders
- Rheology and Processing of Molten Poly(methyl methacrylate) Resins
- PLLA Morphology Controlled by Dry-cast Process
- Two Component Injection Molding of Phase Separating Blends
- A Low Force Valve for Dynamic Control of Molten Plastics in a Mold
- Influence of Drawing and Temperature on the Optical and Structural Properties of Monofilament PP Sutures
- Mechanical Properties of Rubber-toughened Post-industrial Glass-fiber-reinforced PA66
- Thermal Flow Instability in Metal Injection Molding: Experiment and Simulation
- Review Paper
- State of the Art: Recycling of EPDM Rubber Vulcanizates
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
