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Composite models of modular intermeshing corotating and tangential counter-rotating twin screw extruders

✍ Scribed by James L. White; Witold Szydlowski

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
588 KB
Volume
7
Category
Article
ISSN
0730-6679

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✦ Synopsis

Composite models of the pow rate and pressure projiles in moduhr intermeshing corotating and tangenital counter-rotatl'ng twin screw extruders are developed. The simulation of the intenneshing corotatl-ng machine involves both screw and kneading disc elemenb, including le$ and right-handed sections. The conditions under which starvation behavior develops in sections of the screws discussed. 'This research was supported by the Monsanto Chemical Co. patents of Ahnhudt? Eller~nann,~ Colombo,6 Fuller,' Pasquetti,' Meskat and Pawlowski? Erdmenger," Loomans and Brennan, * I and Boden et al. l 2 The patents of F ~l l e r , ~ and more specifically Meskat and Pawlowski' and Erdmenger, lo involve fitting together modules on shafts to produce modular screws. Welding Engineers were the first to commercially manufacture and develop a modular tangential counter-rotating twin screw extruder based on the above-cited Fuller patent2* 3* 7* 13-15 [Figure l(a)]. The Welding Engineers' machine had right-and left-handed screw elements of varying pitch. Werner and Pfleiderer have

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Scale-up of counter-rotating closely int
Scale-up of counter-rotating closely intermeshing twin screw extruders without and with reactions
✍ K. J. Ganzeveld; L. P. B. M. Janssen πŸ“‚ Article πŸ“… 1990 πŸ› Society for Plastic Engineers 🌐 English βš– 706 KB

## Abstract Many scale‐up rules and theories have been presented in the area of extrusion. Until now all the theories concerned the single screw extruder. As the use of counter‐rotating twin screw extruders is increasing, it becomes important to propose scale‐up rules for this kind of extruder. The