✦ LIBER ✦

The geometry of self-cleaning twin-screw extruders

✍ Scribed by Chris Rauwendaal

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 1009 KB
Volume: 15
Category: Article
ISSN: 0730-6679
DOI: 10.1002/(sici)1098-2329(199622)15:2<127::aid-adv2>3.0.co;2-x

No coin nor oath required. For personal study only.

✦ Synopsis

The geometric features of screws for both co-and counter-rotating twin screw extruders are developed frob kinematic principles. It is shown that in corotating twin screw extruders there are more design constraints because the flight flank angle has to equal the angle of intermesh. This is not the case for counter-rotating twin screw extruders. The various geometries possible in the two types of extruders are shown. Although the geometries used for corotating extruders are well known, the geometries for counter-rotating extruders are not well known. In fact, some of the geometries possible with counter-rotating extruders have not yet been made commerically available. The implications of the geometric analysis on actual extruder performance is discussed in detail.

📜 SIMILAR VOLUMES

The hydroxypropylation of starch in a se

The hydroxypropylation of starch in a self-wiping twin screw extruder

✍ Robbert A. de Graaf; Leon P. B. M. Janssen 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 272 KB 👁 2 views

Residence-time distribution model for tw

Residence-time distribution model for twin-screw extruders

✍ Jun Gao; Gregory C. Walsh; David Bigio; Robert M. Briber; Mark D. Wetzel 📂 Article 📅 1999 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 198 KB 👁 1 views

Wet granulation in a twin-screw extruder

Wet granulation in a twin-screw extruder: Implications of screw design

✍ M.R. Thompson; J. Sun 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 572 KB

Wet granulation in twin-screw extrusion machinery is an attractive technology for the continuous processing of pharmaceuticals. The performance of this machinery is integrally tied to its screw design yet little fundamental knowledge exists in this emerging field for granulation to intelligently cre

Impact of screw elements on continuous g

Impact of screw elements on continuous granulation with a twin-screw extruder

✍ Dejan Djuric; Peter Kleinebudde 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 311 KB

The influence of different screw element types on wet granulation process with a twin-screw extruder was investigated. Lactose granules were prepared with different screw configurations such as conveying, combing mixer and kneading elements. The use of kneading blocks led to an almost complete agglo

Engineering analysis and design of twin-

Engineering analysis and design of twin-screw extruders for reactive extrusion

✍ W. Michaeli; A. Grefenstein 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 1015 KB

Experimental investigation of the morpho

Experimental investigation of the morphology development of polyblends in corotating twin-screw extruders

✍ H. Potente; M. Bastian; A. Gehring; M. Stephan; P. Pötschke 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 637 KB

Compounding extruders are still designed based on experience and timeconsuming experimental examinations. This work investigates the morphology development of incompatible polyblends along a mixing zone at the end of a corotating twin-screw extruder. During the process, the samples are taken from th