Myllykoski's new paper manufacturing line at Plattling Papier up and running
Feb 4 2008 The new PM1 paper manufacturing line was successfully started up at Myllykoski’s Plattling Papier in Germany in the beginning of December. The line is one of the largest in the world and represents the latest SC paper technology.
With a width of over eleven meters, the Metso supplied machine makes use of state-of-the-art technologies for SC paper. Unlike many other current SC producers, Plattling Papier decided to use pressure grinders rather than refiners for pulping wood. This produces a groundwood pulp that has a particularly high content of fines and offers a wood yield of nearly 100 percent coupled with low specific energy consumption.
Running the pulp through the high turbulence headbox and the symmetrical dewatering of the fiber slurry over the twin-wire ensure an even formation on both sides, giving an optimized print quality on both sides of the paper, according to a mill spokesman. The proven technologies used in the press section make sure that the paper web is dewatered evenly on both sides and that a homogeneous surface is created at the thickening stage. The high mechanical pressure is provided by four nips.
The new line at Plattling Papier is equipped with the first online SC-A calendaring in the world combined with “moisture gradient” technology and the use of pressurized groundwood. When the paper web enters the calender after the drying section, the web is re-moisturized so that the core of the paper remains dry and the fibers on the surface become elastic.
The PM1 is of Metso Paper's OptiConcept design and has a wire width of 11.3 meters and a design speed of 2,000 meters per minute. A special feature of the PM1 is the OptiLoad TwinLine on-line multi-nip calender. The whole production is handled with two WinRoll winders with an automatic StreamLine roll wrapping and handling system. The winders and roll wrapping system are capable of handling large customer rolls up to a width of 5.2 meters. Metso Automation has provided a comprehensive automation and quality management solution. /AA