26 PROJECTS & CONTRACTS
Productivity improvements for PKV’s PM4 machine at Varel
(PKV) is having its PM4 machine rebuilt by Voith to increase its output by 15 per cent, improve runnability and reduce energy consumption.
G PKV has been using the PM4
to produce packaging papers in a wide range of basis weights, from 120 to 280 grams per square metre. As part of the rebuild, the web width at the pope roller will be increased from 5.25m to 5.45m which will necessitate a number of adjustments to upstream components. The Voith team will increase the widths of the first dryer group, the existing headboxes, the wire and press sections and the Fourdrinier wire. Key items on PKV’s objectives included the improvement of the dewatering capacity to raise the dry content downstream of the Tandem NipcoFlex press by at least one per cent. Voith says that an essential
prerequisite to achieving the desired effects was the integration of the latest Papermaking 4.0
erman paper and board manufacturer Papier- und Kartonfabrik Varel
Pulp Paper & Logistics
technologies. “In this context, the OnCumulus
platform is absolute crucial, as it enables fast, reliable and secure access to data from local machines and systems in the cloud and makes them available for efficient use,” says Voith. “Other modules from the Voith OnCare product range like
OnEfficiency.Strength or
OnEfficiency.Dewatering are used to monitor paper production at PKV. All modules and components are networked with one another.”
OnEfficiency.Strength uses
statistical models and virtual sensors to reduce strength fluctuations in machine direction.
As a result, fibre use and starch use are optimised. Continuous measurements and automatic adjustments to parameters ensure fewer fluctuations, which in turn minimises broke, reduces deviations in production output and improves paper quality during grade changes. Systematic regulation of
the former vacuum by the
OnEfficiency.Dewatering module helps stabilise the dry content upstream of the press. This saves energy, while the Papermaking 4.0 technology ensures consistently high ply bond strength. To ensure the requested one
Voith helps improves efficiencies at Freudenberg non-woven plant
Specialist textile manufacturer Freudenberg Performance Materials has engaged Voith to improve the energy efficiency of an existing air system at its non-woven production facility at Weinheim in Germany. The contract covers the
September/October 2019
programming and retrofitting of the control unit and air ducts with the necessary hardware and software, including the digital data exchange between the control unit and Freudenberg’s own formulation management system. “The retrofit makes it possible
to realise significant energy savings during operation and reduce carbon dioxide, and therefore lower the production costs associated with air conditioning. The deciding factors that resulted in the contract included the relatively
short ROIs for the energy saving investments, the flexibility offered in the definition of the digital interfaces, and the expert advice provided,” says Oswin Schader, electrical engineering chief at Freudenberg Performance Materials.
per cent improvement in dry content, Voith installed a Tandem NipcoFlex system designed in this case for web widths of up to 5.7m. Its design enables optimum dewatering for the entire basis weight range of the PM4. As a result, PKV can further improve the strength and surface quality of its corrugated baseboard made from secondary and virgin fibres. A closed web run in combination with separation suction boxes allows production speeds of up to 1,200 metres per minute, providing the increase in production capacity requested by customer.
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