Rondo Ganahl, the Austrian manufacturer of premium corrugated cardboard, recently invested in a new quality control system for the PM 2 in Frastanz. Among other adaptations, the existing measuring system was replaced by a new Voith LSC scanner with moisture, ash and basis weight measurement and a color sensor. As the Voith LSC measurement system is rugged and easy to service, future maintenance and service costs will be lower.
Due to the inability to measure ash before the rebuild, moisture content was being measured as too low and unnecessary drying energy was expended. Using the ash sensor combined with the basis weight sensor, it is now possible to accurately determine the final moisture content. This reduces fiber consumption by around 1%, while drying energy is reduced by about 2.5%.
Installing a color sensor reduced the amount of broke when switching paper grades from brown to white test liner. The display of the chromaticity coordinate on the monitor also allows a faster response time. In addition, the measurement system reduces the response time when there are process fluctuations, thus ensuring consistent quality.
Another component of the automation solution is the OnQ GradeManager. This automatic grade changer substantially reduces grade change time and the broke resulting from startup loss. Altogether, this amounts to an additional production volume in A-grade quality of 5.6 metric tons per grade change.
Due to the teamwork between Voith Paper and Rondo Ganahl, the rebuild was successfully carried out in only three days of downtime.
Monday, 25 July 2011 10:00
New quality control system increases process stability at Rondo Ganahl
Ian Melin-Jones
Published in
European News
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