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Experimental analysis of the kneading disk region in a co-rotating twin screw extruder: Part 1. Flow characteristics of the kneading disk region

✍ Scribed by Y. Shimizu; S. Arai; T. Itoyama; H. Kawamoto

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 501 KB
Volume: 15
Category: Article
ISSN: 0730-6679
DOI: 10.1002/(sici)1098-2329(199624)15:4<307::aid-adv3>3.0.co;2-x

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✦ Synopsis

Co-rotating twin screw extruders are extensively used in polymer compounding. In co-rotating twin screw extruders, the kneading disk region is the most influential for compounding efficiency. However, only a few studies have so far been made for the flow analysis of the kneading disk region. This may be due to the fact that phenomena relating to kneading are overly complicated. In this study, the flow in the kneading disk region was investigated using a closed-type co-rotating twin screw single-staged mixer. We measured torque, pressure, and resin temperature under various compounding conditions of polypropylene. It was found that the flow characteristics obtained were identical with those measured using a capillary rehometer. m

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