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Journal of Polymer Engineering

Editor-in-Chief: Grizzuti, Nino

IMPACT FACTOR 2017: 0.778

CiteScore 2017: 0.77

SCImago Journal Rank (SJR) 2017: 0.244
Source Normalized Impact per Paper (SNIP) 2017: 0.551

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Volume 33, Issue 8


An optical system for measuring the residence time distribution in co-rotating twin-screw extruders

Gregor Gerstorfer / Alexander Lepschi / Jürgen Miethlinger / Bernhard G. Zagar
Published Online: 2013-09-07 | DOI: https://doi.org/10.1515/polyeng-2013-0051


Expanding the general knowledge of the extrusion process in a co-rotating twin-screw extruder requires several parameters to be determined, among them the residence time distribution (RTD). This contribution introduces an optical measurement setup for acquiring the residence time density and distribution function. Based on our measurement results, we derive the influence of the rotational speed of the screws, mass flow rate and of different types of screw configurations on residence time.

Keywords: co-rotating twin-screw extruder; dispersive and distributive mixing; fluorescence; residence time distribution; UV


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About the article

Corresponding author: Gregor Gerstorfer, Institute for Measurement Technology, Johannes Kepler University, Linz, Austria, e-mail:

Received: 2013-03-01

Accepted: 2013-08-12

Published Online: 2013-09-07

Published in Print: 2013-11-01

Citation Information: Journal of Polymer Engineering, Volume 33, Issue 8, Pages 683–690, ISSN (Online) 2191-0340, ISSN (Print) 0334-6447, DOI: https://doi.org/10.1515/polyeng-2013-0051.

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