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A product from: ColVisTec AG Inline Prozess Monitoring

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Inline probes for reflectance and transmission

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Reflection probe RPMP for opaque media and transmission probe TPMP for transparent/clear media are melt measuring probes specially developed for use in extruders, for temperatures up to 400 °C. Both probes can be easily integrated into any extruder. All that is required for the RPMP is a free 1/2"-20UNF threaded hole (typ. Dynisco) and two opposite threaded holes for the TPMP.

RPMP stands for "Reflection Polymer Melt Probe", it is a reflection probe for use on opaque melts. The probe has six illumination fibers arranged in a ring and a central detection fiber for the reflected light from the melt.

TPMP stands for "Transmission Polymer Melt Probe" and is a transmission probe for use on transparent melts. Two probes are positioned directly opposite each other. One transmits the light, the opposite one detects the incoming light through the melt (transmitted light method).

In both variants, the probe tips are equipped with self-cleaning sapphire windows. Connected via fiber optic cable to the spectrophotometer "InSpectro X", the spectrum of the plastic melt is continuously recorded and displayed as a trend diagram to the reference value, e.g. with the color values (L*, a*, b*, dE*, yellowness etc.). It thus provides complete information on the homogeneity and stability of the plastic melt in the process, without loss of process control. This avoids contamination, false batch or drift. Deviations of this kind can be caused by variations in process parameters (temperature, pressure, speed, etc.) or by the wrong selection of screw components, variations in dosing and quality of raw materials used.

COLVISTEC Inline technology allows continuous monitoring of the production process and immediate intervention to prevent losses in the production and further development of production processes.

ColVisTec cooperates with the world's leading manufacturers in the paint, pharmaceutical, plastics and chemical industries. Our team of highly experienced engineers and scientists support these industries with reliable and industry-standard inline spectroscopy solutions combined with fiber optic probes for continuous process monitoring.

With the integration of inline spectrophotometers into production lines, the final processed product is measured directly in the process. This allows the entire production process to be monitored seamlessly in real time, based on the measurement data of the manufactured product. The production process is not disturbed, no samples are taken. This allows to achieve increases in productivity and quality. It becomes an integral part of digitalized manufacturing.

Our technology can be integrated into a wide range of processes. For this purpose, we combine our spectrometers with different probes for liquid, pasty, powdery or molten media in the process for temperatures up to 400 °C (752 °F) and process pressures up to 250 bar (3625 psi). With the standardized solutions it can be integrated very easily and quickly into existing production lines. Flexible hardware configurations and data output in various formats are possible.

Comprehensive and competent customer support as well as training options ensure a smooth transition from cumbersome, time- and labor-intensive offline measurement to fully automated inline process monitoring.

From our headquarters in Berlin, Germany, we support our products worldwide and work closely with our customers. In addition, we cooperate with other process equipment manufacturers to offer complete solutions. Usually our technology is integrated into existing production lines to increase their productivity and quality. We do not see ourselves as a hardware supplier, but as a provider of unique solutions that are specifically tailored to the processes of the customers.

We look forward to learn about your batch or continuous process and discuss the details for an inline process monitoring solution.

Realized applications: Plastics industry (compounding, reactive extrusion, recycling, powder coating, etc.), pharmaceutical industry as PAT in hot melt extrusion, paints and coatings industry in liquid media, etc.