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Viscosity control for extrusion process using recycled polymers

conference contribution
posted on 2023-06-09, 07:14 authored by Alan Clarke, Bao Kha NguyenBao Kha Nguyen, Gerald McNally
The aim of this paper is to develop a new extruder control system for recycled materials which has ability to automatically maintain constant a polymer melt viscosity of mixed recycled polymers during extrusion, regardless of variations in the Melt Flow Index (MFI) of recycled mixed grade high density polyethylene (HDPE) feedstock. A closed-loop controller is developed to automatically regulate screw speed and barrel temperature profile to achieve constant viscosity and enable consistent processing of variable grade recycled HDPE materials. The experimental results of real time viscosity measurement and control using a 38mm single screw extruder with different recycled HDPEs with widely different MFIs are reported in this work.


Publication status

  • Published


Proceedings of the Second International Conference on Advances in Mechanical and Automation Engineering; Rome, Italy; 18-19 April 2015


Institute of Research Engineers and Doctors

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Department affiliated with

  • Engineering and Design Publications

Full text available

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Peer reviewed?

  • Yes

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