INSTRUMENTATION | COLOUR MEASUREMENT
The hardware is complemented by Equitech’s
EquiColor software, which is designed with security features that allow production managers or process engineers to set standards and tolerances while letting operators use, access, and recall previous operational files without affecting their settings, according to Gómez. He also highlights the system’s ability to use two probes simultaneously, for example both for colour or one for colour and the other for gloss. Probes are also available from German company
ColVisTec, which has cooperated with Equitech in the past as well as working on its own spectropho- tometer and probe developments. The two compa- nies now work independently but have an agree- ment to market technologies in separate territories. ColVisTec Sales, Marketing and Customisation
Director Fuat Eker says 90% of the systems it has installed so far are in extrusion applications for plastics and also other materials. “The integration into existing extruders is as easy as into new extruder lines, there are no differences,” he says. The company’s InSpectro X and fibre optic probes are designed for production environments as well as laboratories. Eker says InSpectro X allows fast measurements
for residence time detection and RTM (Residence Time Measurement) and ReTA (Residence Time Analysis) software tools also provide fast analysis of the measurements. Results are calculated and displayed in numbers as well as in graphs. “This function allows to define process windows very quickly and to find the optimal screw configuration. It opens up new insights in extrusion,” he says. “The trend is more and more towards control
loops to precisely control the dosing of raw materials for the right colour or composition of the final product,” Eker says. “We remain focused and continue to expand our product portfolio with innovative and new developments for the analysis and monitoring of continuous processes in the
Above: ColVisTec’s latest development is the GiANT system, which combines a three-function spectrometer platform with a combination probe (shown here) for UV-Vis and NIR spectra
polymer industry.” Colour values are not only an indicator of
product quality but are also useful in providing insight for process monitoring in the extrusion stage. “All parameters in the production process — temperature, pressure, production speed, feeders, pumps etc — have an impact directly on the colour values,” says Eker. “Immediate adjustments of the process parameters are therefore possible through immediate ‘off-specification’ detection.”
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.datacolor.com �
www.konicaminolta.com �
www.xrite.com �
www.hunterlab.com �
www.byk-instruments.com �
www.colorix.com �
www.colorlite.de �
www.equitechintl.com �
www.colvistec.de
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