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The Adjustable Grooved Feed Extruder

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Published/Copyright: February 23, 2022
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International Polymer Processing
From the journal International Polymer Processing Volume 15 Issue 2

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.

Dr. C. Rauwendaal, Rauwendaal Extrusion Engineering Inc., 12693 Roble Veneno Lane, Los Altos Hills, CA 94022-2668, USA

References

1 Kraemer, A.: Kunststoffe 1, p. 21 (1988)10.1007/978-3-662-08668-1_1Search in Google Scholar

2 del Pilar, M., Noriega, E.: Technologia del Plastico 4, p. 29 (1997)Search in Google Scholar

3 Davis, B.: Polym. Eng. Sci. 7, p. 1199 (1998)10.1002/pen.10288Search in Google Scholar

4 Boes, D.: Kunststoffe 5, p. 659 (1990)Search in Google Scholar

5 w UP RP Nr. P 303397 Sikora, R., Sikora, J., Diakun, J.Search in Google Scholar

6 w UP RP Nr. P 304302 Sikora, R., Sikora, J.Search in Google Scholar

7 US Patent 4 678 339 (1987) Peiffer, H., Eberhardt, H.Search in Google Scholar

8 US Patent 5 909 958 (1999) Rauwendaal, C.J.Search in Google Scholar
Received: 1999-06-14
Accepted: 2000-02-10
Published Online: 2022-02-23

© 2000 Walter de Gruyter GmbH, Berlin/Boston, Germany

Articles in the same Issue

  1. Contents
  2. Editorial
  3. Second of a Series: Pioneering Polymer Industry Developments—The IG Farbenindustrie and the Establishment of Synthetic Rubber
  4. Screw extrusion/mixing
  5. Analysis of Mixing in Corotating Twin Screw Extruders through Numerical Simulation
  6. Melt Conveying in Co-rotating Twin Screw Extruders
  7. The Adjustable Grooved Feed Extruder
  8. Reactive Extrusion
  9. Hydrolytic Depolymerization of Polyethylene Terephthalate by Reactive Extrusion
  10. Effect of Conversion on Chain Addition Copolymerizations Performed in a Backmixed Drag Flow Extruder Reactor
  11. Fiber and film
  12. Single and Double Bubble Tubular Film Extrusion of Polybutylene Terephthalate
  13. Molding
  14. Viscoplastic Material Modeling for the Stretch Blow Molding Simulation
  15. The Effects of Compression Pressure on Injection Compression Molding
  16. Numerical Simulation of Compression Molding of UHMWPE
  17. Numerical Simulation of Compression Molding of UHMWPE
  18. Mechanical Properties of Isotactic Polypropylene with Oriented and Cross-hatched Lamellae Structure
  19. Morphological Characterisation of Long Glass Fibre Composites for the Thermoforming Process
  20. PPS News
  21. PPS News
  22. Professional news
  23. New Petrochemical Complexes
https://doi.org/10.1515/ipp-2000-0004

Articles in the same Issue

  1. Contents
  2. Editorial
  3. Second of a Series: Pioneering Polymer Industry Developments—The IG Farbenindustrie and the Establishment of Synthetic Rubber
  4. Screw extrusion/mixing
  5. Analysis of Mixing in Corotating Twin Screw Extruders through Numerical Simulation
  6. Melt Conveying in Co-rotating Twin Screw Extruders
  7. The Adjustable Grooved Feed Extruder
  8. Reactive Extrusion
  9. Hydrolytic Depolymerization of Polyethylene Terephthalate by Reactive Extrusion
  10. Effect of Conversion on Chain Addition Copolymerizations Performed in a Backmixed Drag Flow Extruder Reactor
  11. Fiber and film
  12. Single and Double Bubble Tubular Film Extrusion of Polybutylene Terephthalate
  13. Molding
  14. Viscoplastic Material Modeling for the Stretch Blow Molding Simulation
  15. The Effects of Compression Pressure on Injection Compression Molding
  16. Numerical Simulation of Compression Molding of UHMWPE
  17. Numerical Simulation of Compression Molding of UHMWPE
  18. Mechanical Properties of Isotactic Polypropylene with Oriented and Cross-hatched Lamellae Structure
  19. Morphological Characterisation of Long Glass Fibre Composites for the Thermoforming Process
  20. PPS News
  21. PPS News
  22. Professional news
  23. New Petrochemical Complexes
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