The Adjustable Grooved Feed Extruder
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C. Rauwendaal
Abstract
Grooved feed extruders have been around since about the 1960s. These extruders offer considerable advantages over conventional extruders, such as higher throughput, better stability, and the ability to process very high molecular weight polymers. There are some important disadvantages as well, for instance, higher motor load, wear is more likely, high pressures in the grooved region, and the screw design has to be adapted.
The disadvantages of the grooved feed extruder disappear when the grooved feed extruder is made with a mechanism that allows adjustment of the groove depth. This paper will report on the development of grooved feed extruders that incorporate an adjustment mechanism that allows the depth of the grooves to be changed, during actual operation, from zero to full depth. Operational data from actual extrusion experiments are presented.
References
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© 2000 Walter de Gruyter GmbH, Berlin/Boston, Germany
Artikel in diesem Heft
- Contents
- Editorial
- Second of a Series: Pioneering Polymer Industry Developments—The IG Farbenindustrie and the Establishment of Synthetic Rubber
- Screw extrusion/mixing
- Analysis of Mixing in Corotating Twin Screw Extruders through Numerical Simulation
- Melt Conveying in Co-rotating Twin Screw Extruders
- The Adjustable Grooved Feed Extruder
- Reactive Extrusion
- Hydrolytic Depolymerization of Polyethylene Terephthalate by Reactive Extrusion
- Effect of Conversion on Chain Addition Copolymerizations Performed in a Backmixed Drag Flow Extruder Reactor
- Fiber and film
- Single and Double Bubble Tubular Film Extrusion of Polybutylene Terephthalate
- Molding
- Viscoplastic Material Modeling for the Stretch Blow Molding Simulation
- The Effects of Compression Pressure on Injection Compression Molding
- Numerical Simulation of Compression Molding of UHMWPE
- Numerical Simulation of Compression Molding of UHMWPE
- Mechanical Properties of Isotactic Polypropylene with Oriented and Cross-hatched Lamellae Structure
- Morphological Characterisation of Long Glass Fibre Composites for the Thermoforming Process
- PPS News
- PPS News
- Professional news
- New Petrochemical Complexes
Artikel in diesem Heft
- Contents
- Editorial
- Second of a Series: Pioneering Polymer Industry Developments—The IG Farbenindustrie and the Establishment of Synthetic Rubber
- Screw extrusion/mixing
- Analysis of Mixing in Corotating Twin Screw Extruders through Numerical Simulation
- Melt Conveying in Co-rotating Twin Screw Extruders
- The Adjustable Grooved Feed Extruder
- Reactive Extrusion
- Hydrolytic Depolymerization of Polyethylene Terephthalate by Reactive Extrusion
- Effect of Conversion on Chain Addition Copolymerizations Performed in a Backmixed Drag Flow Extruder Reactor
- Fiber and film
- Single and Double Bubble Tubular Film Extrusion of Polybutylene Terephthalate
- Molding
- Viscoplastic Material Modeling for the Stretch Blow Molding Simulation
- The Effects of Compression Pressure on Injection Compression Molding
- Numerical Simulation of Compression Molding of UHMWPE
- Numerical Simulation of Compression Molding of UHMWPE
- Mechanical Properties of Isotactic Polypropylene with Oriented and Cross-hatched Lamellae Structure
- Morphological Characterisation of Long Glass Fibre Composites for the Thermoforming Process
- PPS News
- PPS News
- Professional news
- New Petrochemical Complexes
