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WORLD PULPPAPER 77 TISSUE IN FOCUS The production of tissue paper makes extremely high demands on the press felta high degree of dewatering must be achieved at extremely fast running speeds. Also a new press felt has to reach optimal performance within just a few hours. Another consideration is when drying energy requirements gas and steam consumption demand greater consideration than in the production of graphic papers. The fine fibre batt layers typically used means that tissue felt has a tendency toward compacting and contamination. Here Atrojet press felts can have a particularly positive effect thanks to their tailored adaptation. This makes them ideal for use in the tissue sector one with very specific manufacturing requirements. The adaptability of the yarn structure enables the implementation of an extremely compact and very fine Atrojet module. This can for example be combined with an open substructure. REDUCING ENERGY REQUIREMENTS An Atrojet press felt used in tissue production opens opportunities for actively optimising energy requirements the fine homogeneous Atrojet MD yarn structure enables fast start-up and the highest possible dewatering. The best possible contact area yields optimum pressure transfer and contact pressure on the Yankee cylinder. Selecting an open-textured roll side base enables the press felt to be cleaned more efficiently it also improves the resistance to compacting and contamination thus potentially increasing the service life of the felt. Unsurprisingly Heimbach take an optimistic view of their market share potential given the growth currently being experienced in the tissue sector. With this product we wish to make future inroads into the tissue sector to a much greater degree than we have so far confirmed Mr. Kiefer. AT THE CUTTING EDGE The paper industry is our pacemaker summarised Jochen Pirig. The range of raw materials is constantly expanding as is the range of products. He considers Atrojet to be a product that meets the needs of the future because this felt does not need to be changed even when changing between batches of raw materials or rapidly changing recipes and grammages. Many of the customers in whose premises Heimbach conducted test runs have already placed repeat orders the potential for this new technology seems to have been recognised. The company has invested a seven-figure Euro sum in its Olten facility in Switzerland. Within the Heimbach Group the Olten facility is considered a competence centre for multi-axial products in web technology. Atrojet production at Olten should be in full swing by the end of the first quarter 2016. Franz Kiefer and Jochen Pirig are certain Atrojet represents the next evolutionary step in felts sector. Here we are presenting the product that will dominate through the next decade Selecting an open- textured roll side base enables the press felt to be cleaned more efficiently Figure 4. Atrojet press felt consisting of batt module and the Atrojet module combined with a woven base in the substructure