Study of mixing efficiency in kneading discs of co-rotating twin-screw extruders.(International Forum on Polymers - 1996): An article from: Polymer Engineering and Science

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From the author: Co-rotating twin-screw extruders are widely used for compounding and blending in polymer processing. In a modular machine, the dominant elements determining dispersive mixing efficiency are the kneading discs. A fluid dynamics analysis package - FIDAP, using the finite element method was implemented to simulate the 3-D isothermal flow patterns in the kneading disc region of a Werner & Pfleiderer ZSK-53 co-rotating twin-screw extruder. The kneading discs simulated are three-lobe discs. The flow field characteristics relevant for dispersive mixing are shear stresses generated and elongational flow components. We compare these flow characteristics for the three-lobe kneading discs of the ZSK-53 with the two-lobe discs of a ZSK-30 machine. We also discuss the influence of processing parameters on the flow field mixing efficiency.

Citation Details
Title: Study of mixing efficiency in kneading discs of co-rotating twin-screw extruders.(International Forum on Polymers - 1996)
Author: Hongfei Cheng
Publication:Polymer Engineering and Science (Refereed)
Date: June 1, 1997
Publisher: Society of Plastics Engineers, Inc.
Volume: v37 Issue: n6 Page: p1082(9)

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