Sheet temperature measurement in thermoforming

J. F. Lappin*, P. J. Martin

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)


One of the most important stages in the thermoforming process is heating the plastic sheet. Proper heat control is essential for materials such as polypropylene where the thermoforming operating window is very narrow. In industrial thermoforming, sheet temperature is usually not measured directly. Instead, the roll speed of the plastic sheet being fed through the panels of heaters is adjusted until acceptable mouldings have been achieved. Installation of a sheet temperature monitoring system usually proves to be quite expensive. This paper investigates the possibility of a less expensive system and describes the problems which can be encountered when attempting to make accurate infrared readings.

Original languageEnglish
Number of pages5
Publication statusPublished - 1996
EventProceedings of the 1996 54th Annual Technical Conference. Part 2 (of 3) - Indianapolis, IN, USA
Duration: 05 May 199610 May 1996


ConferenceProceedings of the 1996 54th Annual Technical Conference. Part 2 (of 3)
CityIndianapolis, IN, USA

Bibliographical note

Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics


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