A new infrared pyrometer for polymer temperature measurement during extrusion moulding

We describe a novel two-wavelength infrared system that we have developed for the on-line measurement of the temperature profiles of extruded polyethylene terephthalate (PET) microfibres. The key feature of the developed system is the use of two specific wavelengths that correspond to fundamental ab...

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Bibliographic Details
Published inInfrared physics & technology Vol. 46; no. 1; pp. 11 - 15
Main Authors Bendada, A., Lamontagne, M.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 01.12.2004
Elsevier
Subjects
Bolometer; infrared, submillimeter wave, microwave and radiowave receivers and detectors
Bolometers; infrared, submillimeter wave, microwave, and radiowave receivers and detectors
Exact sciences and technology
High-temperature techniques and instrumentation; pyrometry
Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques
Instrumentation
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optical sensing
Physics
Plastics processing
Thermal instruments, apparatus and techniques
Instrumentation
Plastics processing
87.61.Ff
61.41.+e
Optical sensing
42.81.Cn
Infrared detectors
Ethylene terephthalate polymer
Temperature measurement
Infrared pyrometer
Instruments
Synthetic fiber
Plastics industry
Plastics processing industry
Optical sensors
Experimental study
Polymers
Extrusion molding
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Summary:We describe a novel two-wavelength infrared system that we have developed for the on-line measurement of the temperature profiles of extruded polyethylene terephthalate (PET) microfibres. The key feature of the developed system is the use of two specific wavelengths that correspond to fundamental absorption bands of PET. The two wavelengths are located in the far infrared region, which allows accurate measurements even in the low-temperature range. Moreover, they are quite spaced out apart, which allows the achievement of a very good temperature resolution. A particular characteristic of the new infrared device is the use of mirror reflectors as collection optics to overcome problems of optical chromatic aberrations. On-line experimental data obtained from trials carried out on an industrial-scale extrusion die are presented and discussed
ISSN:1350-4495
1879-0275
DOI:10.1016/j.infrared.2004.03.002