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Rebuild of PM 1 at Stora Enso Sachsen Boosts Production 10%

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Stora Enso's Eilenburg PM 1 at its mill in Sachsen, Germany, has started up following a rebuild by Voith, Germany. Stora Enso undertook the rebuild to improve runnability and to eliminate existing bottlenecks in the system. In addition, the maximum operating speed of PM 1 was increased to 2,000 m/min, corresponding to a production increase of about 10% (depending on the grade range). One month after starting up, PM 1 operation speed exceeded 1,900 m/min.

The rebuild included the installation of a new NipcoFlex press module, which has increased the dryness content after the press by 3% to 4% after just a short time. In addition, a new exhaust system in the wet end and a JetCleaner for cleaning the bottom wire provide for more cleanliness and thus improved runability. The old machine calender was replaced by a Janus calender to improve paper quality. The project also included a rebuild of the dryer section together with fabric stretchers, fabric guides, and the machine air ventilation system. A new trim cutter and a new threading system completed the scope of supply.

Stora Enso Sachsen produces newsprint and telephone book paper in the basis weight range of 34 to 48.8 gsm. It uses 100% recycled fibers.


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