PAPER making! g! g FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL ® Volume 11, Number 3, 2025
Analysis variety for a wide range of configurations NipMaster analyses are tailored to every machine configuration – regardless of whether it is a Single, DuoCentri, Tandem or Triple NipcoFlex. The software tool considers the wide range of grammages that are commonplace, especially on board and packaging machines. "Ranges from 70 to 220 g/m² are not uncommon," explains Neumann. The challenge here is that as the basis weight increases, the basis weight, initial dry content and machine speed typically change as well, resulting in variable requirements for the dewatering concepts. These must therefore be designed to be flexible and precise. NipMaster has already proven itself many times over as an indispensable tool for papermakers. The software can be used to analyze numerous parameters, such as the current drainage situation, adjustment of the operating volume to specific pressure and water quantities, and optimal coordination of belt surfaces and felts for the respective drainage type, such as tube suction or lateral nip drainage. This holistic approach is essential, as excessive operating volume can have a negative impact on dewatering efficiency. "Our goal is to precisely calculate and continuously optimize quality – from the surface of the shoe press belt to the counter roll," says Neumann. Practical example Tandem NipcoFlex: fine tuning is crucial The Tandem NipcoFlex provides a good example of how NipMaster works: For an optimal configuration, precise drainage distribution between the first and second nip is crucial. Typically, the drainage performance of the first nip is around 75 percent, with the second nip handling the remaining 25 percent. NipMaster analyses can be used to further improve the dewatering profile of the machine by adjusting the roll contact design, optimizing the belt surfaces and avoiding over- or undercapacities. "This level of fine-tuning is comparable to Formula 1 – here, too, the perfect coordination of the smallest parameters determines success," explains Neumann. Conclusion: With NipMaster, Voith bundles its comprehensive expertise in the press section. Changes to roll covers, felts or belts are always considered in the context of the entire system. This not only increases dry content, efficiency and runability, but also optimizes existing plants over the long term. It is therefore no surprise that shoe press analysis with NipMaster has established itself as the standard solution in the paper industry.
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