Customer case: Koehler Kehl GmbH, Germany

PR Rolls solved the corrosion problem on Duostabi rolls Corrosion is a common issue on vacuum rolls, and PR Rolls have a lot of experience in solving such problems. One way is to grind the corrosion away and protect the cylinders with their TecnoClean coating. The grinding work must be done in the correct way to avoid felt wearing. Koehler Kehl GmbH is a major family-owned company in Germany. After some unsuccessful attempts to solve the problem with another supplier, they turned to PR Rolls for a solution to the corrosion. Koehler Kehl GmbH’s representative, Joachim Fuchs, Production Manager of Line 2, describes the collaboration as follows: Which problem did Koehler Kehl GmbH need PR Rolls’ help with? “We had a massive problem with corrosion on the Duostabi rolls in the pre-dryer section on the PM 2.” What did the solution look like? What did PR Rolls do for Koehler Kehl GmbH? “The solution was to grind and coat the Duostabi rolls with their TecnoClean coating, which means that the running times of the dryer fabric can now be restored from approximately four months to the standard running time of 540 days!!” What makes PR Rolls different from the competition? “The coating quality itself and the granting of a 5-year guarantee on this coating.” What benefits has Koehler Kehl GmbH gained from the solution implemented by PR Rolls? “By achieving the standard running time of the dryer fabric, downtimes could be reduced. The costs for the dryer fabrics could also be reduced to the normal level.” And what did you think of the service? “The service was carried out in a highly coordinated and systematic manner. PR Rolls fully met our requirements and expectations in terms of safe working, cleanliness, and tidiness.” Jani Westerlund, CEO of PR Rolls, is delighted that Koehler Kehl GmbH chose PR Rolls as their service provider. “We know that they have extremely high standards for their service providers. This was a challenging situation for the customer, as this type of corrosion also increases production costs. PR Rolls’ TechnoClean coating was a vital part of the solution. The secret to this coating’s long life is the right grinding method, the right materials and parameters, the right blade materials and our staff’s expertise,” Westerlund says.