Pulp Paper & Logistics


HEIMBACH


ANDRITZ 21


Figure 3: In comparative tests the new fabric design gave superior results when measured against other, conventional fabrics


contamination, rather a fabric that was also easy to clean and which stayed clean for longer,” she said. Heimbach experts called upon Heimbach’s partner Kadant Nordic AB to help test and optimise the design. Heimbach worked with the manufacturer of high-pressure cleaners to clean the new fabric design as well as contaminated fabric samples of various designs under realistic conditions. The newly-developed fabric design gave superior performance from the start. “The tests showed that excellent cleaning results could be achieved independent


of the angle of impact of the water jet,” added Raschka. Trials on paper machines also revealed reduced dirt deposits with the new design.


Secoplan.V – a clean fabric design One of the special features of the newly developed dryer fabric Secoplan.V is the vertical funnel structure that enables efficient cleaning right into body of the fabric. Small channels prevent dirt being pressed through the fabric onto the roll. Then there is the smaller


Figure 5 (top) and 6 (above): A smaller number of contact points as well as a reduced contact area on the paper side prevent adhesion of dirt and make cleaning more efficient. Conversely, the density of yarns on the roll side increases wear resistance


number of contact points leading to a reduced contact area on the paper side of the dryer fabric that prevent adhesion of dirt. The particularly dense roll side helps prevent particles of dirt


being pressed through the fabric onto the roll, as well as increasing wear resistance – all in all a clean solution.


Figure 4: The funnel structure facilitates efficient cleaning right to the core of the fabric


Efficiency in the dryer section instead of ‘hot air’ It must always be said that the choice of the right kind of fabric design clearly depends on paper grade and the resulting intensity of contamination, on sensitivity to marking, as well as on conditions on the machine. Heimbach would be happy to take a look at your dryer section and help you make the right choice.


September/October 2016


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36