Stora Enso has entrusted the leading full-line supplier Voith with the conversion of a former paper machine. The machine at the northern Finnish site in Oulu previously produced coated graphic papers. After the successful conversion, the machine will produce high-quality folding boxboard and coated kraft back (CKB). With a production volume of 750,000 tons per year, the plant will be the largest board machine in Europe. Start-up is scheduled for early 2025.
To achieve the high production volume, Voith together with Stora Enso developed a tailor-made concept that maximizes both efficiency and sustainability along the entire paper machine. The scope of supply includes a new, three-layer wire section with the DuoFormer D II. The high-performance Triple NipcoFlex shoe press concept will enable maximum production output at the highest quality level. At the same time, efficient technology will minimize specific energy and production costs. The machine will also feature maximum flexibility and top product quality thanks to a SpeedSizer system and four DynaCoat AT coating units with JetFlow F applicators. The SpeedSizer as well as the DynaCoat AT are partly made of carbon fiber to ensure stable cross-sections at all grades and speeds. In addition, Voith’s bulk-saving EcoCal HiBulk calender will provide excellent stiffness, outstanding smoothness and printability.
For ideal energy efficiency, Voith experts are also extensively rebuilding the existing dryer section. The high operating dew point of up to 65°C in the EcoHood 65 dryer hood lowers the supply and exhaust air volumes and thus reduces power and steam consumption.
In addition, Stora Enso relies on Voith’s leading digitalization and automation expertise. Thus, Voith will implement OnControl.Machine MCS for the automation of the board machine, the OnQuality quality control system, and the OnCare.Health condition monitoring solution. The dataPARC cloud serves as the IIoT platform.
Stora Enso is a leading provider of renewable products in packaging, biomaterials, wooden construction, and paper, and one of the largest private forest owners in the world.
The Voith Group is a global technology company.