Voith’s New C-bar Vertecs Screen Basket Sets a New Benchmark for Efficiency in Paper Recycling
In a breakthrough set to reshape screening technology in stock preparation, Voith has introduced the C-bar Vertecs, a next-generation screen basket that dramatically enhances sticky separation efficiency and boosts screening throughput all while slashing energy use.
According to results from its successful deployment at heinzelpaper’s mill in Laakirchen, Austria, the C-bar Vertecs delivers up to 50% better sticky removal and over 20% increased throughput compared to existing solutions. Perhaps most notably, this leap in performance comes without trade-offs pulp quality, throughput, and operational stability are all improved simultaneously.
Oliver Hunstein, process and plant technology lead at heinzelpaper, shared his assessment:
“Compared to all other screening profiles we’ve used, sticky removal has significantly improved. We’re also seeing minimized fine losses, resulting in a higher yield.”
The key lies in the completely re-engineered profile geometry. Traditionally, screen basket selection required paper mills to choose between pulp quality and efficiency. Now, C-bar Vertecs eliminates that compromise, unlocking benefits across the board. Whether for coarse, fine, or reject screening, the screen basket adapts seamlessly even when dealing with more challenging raw materials.
Energy efficiency also sees a considerable upgrade. Even with a 25% boost in throughput, the system maintains the same rotor speed and lowers the pressure differential enabling energy savings of more than 20%.
Built on Voith’s decades-proven C-bar slot screen technology, the Vertecs version incorporates an overlapping profile with a stable slot width, ensuring consistent results over the screen’s lifespan. It’s fully compatible with Voith’s BlueLine screens, earlier-generation Voith machines, and even third-party screening units, making adoption across operations frictionless.
From EMEA to North America, mills are embracing the C-bar Vertecs as a universal solution for high-efficiency, low-energy screening in the age of resource-conscious paper production.