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Drag and Pressure Flow in Twin Screw Extruders
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D. B. Todd
Published/Copyright:
May 27, 2013
Abstract
Staggered arrays of kneading paddles in co-rotating intermeshing twin screw extruders have drag and pressure characteristics similar to those in conventional screws. The pressure flow term was determined by measuring pressure drop as a function of flow rate in a non-rotating configuration. The drag flow per revolution was estimated as half of the product of lead length and open barrel cross section. The preliminary determinations were subsequently confirmed in a flooded operating extruder.
Accepted: 1990-5-14
Published Online: 2013-05-27
Published in Print: 1991-05-01
© 1991, Carl Hanser Verlag, Munich
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Articles in the same Issue
- Contents
- Contents
- Internal Mixers
- Spreader Blade Analogy of Flow Past an Internal Mixer Rotor
- Observation and Analysis of Carbon Black Agglomerate Dispersion in Simple Shear Flows
- Non-Newtonian and Non-Isothermal Modeling of 3D-Flow in an Internal Mixer
- Relationship between Rotor Designs in an Internal Mixer and Physical Properties of Mixed Rubber Compounds
- Dynamic Modelling of Internal Mixers Using System Identification Techniques
- Single Screw Processing
- Theoretical Principles Governing the Design of Barrier Sections in Extruders
- A Model of Flow in the Mixing Section of the List KoKneader
- Twin Screw Extrusion
- Drag and Pressure Flow in Twin Screw Extruders
- Feed Variance Limitations for Co-rotating Intermeshing Twin Screw Extruders
- Fluid Mechanics of Distributive Mixing in a Modular Intermeshing Corotating Twin Screw Extruder
- New Ways in the Manufacturing of Finished and Semi-finished Products from Nylon
- Mixing in Non-intermeshing Twin Screw Extruders
Articles in the same Issue
- Contents
- Contents
- Internal Mixers
- Spreader Blade Analogy of Flow Past an Internal Mixer Rotor
- Observation and Analysis of Carbon Black Agglomerate Dispersion in Simple Shear Flows
- Non-Newtonian and Non-Isothermal Modeling of 3D-Flow in an Internal Mixer
- Relationship between Rotor Designs in an Internal Mixer and Physical Properties of Mixed Rubber Compounds
- Dynamic Modelling of Internal Mixers Using System Identification Techniques
- Single Screw Processing
- Theoretical Principles Governing the Design of Barrier Sections in Extruders
- A Model of Flow in the Mixing Section of the List KoKneader
- Twin Screw Extrusion
- Drag and Pressure Flow in Twin Screw Extruders
- Feed Variance Limitations for Co-rotating Intermeshing Twin Screw Extruders
- Fluid Mechanics of Distributive Mixing in a Modular Intermeshing Corotating Twin Screw Extruder
- New Ways in the Manufacturing of Finished and Semi-finished Products from Nylon
- Mixing in Non-intermeshing Twin Screw Extruders
