Viscosity Control for Extrusion Processes Using Recycled Polymers

ALAN, CLARKE and BAO KHA, NGUYEN and GERARD, MCNALLY (2015) Viscosity Control for Extrusion Processes Using Recycled Polymers. In: Second International Conference on Advances in Mechanical and Automation Engineering - MAE 2015, 18 - 19 April, 2015, Rome, Italy.

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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.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: viscosity, control, extrusion, recycled polymers
Depositing User: Mr. John Steve
Date Deposited: 01 May 2019 11:02
Last Modified: 01 May 2019 11:02

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