Metal belt technology
Improve quality and efficiency in wet pressing
The newest OptiPress Center press section concept has a smooth, heated metal belt that goes around the center roll and guide stretcher roll. The steam-heated metal belt improves press section performance, as the temperature of the paper web increases on both sides of the press nip.
Up to 20% more effective water removal at press section with metal belt technology
Metal belt technology has made a major breakthrough as a revolutionary new calendering concept for papermaking. Now the benefits can also be utilized in wet pressing, too. The OptiPress with metal belt technology boosts production capacity by eliminating unsupported open draws. It also increases the dry content after the press by up to six percentage points due to more effective water removal at the press nip and evaporation over the hot metal belt. Furthermore, it improves several end product qualities, such as strength and porosity.
Ideal concept for rebuilds
The new concept is compact and increases dry content significantly, making it ideal for rebuilds to increase capacity by removing bottlenecks such as limited drying capacity or runnability.
Valmet’s new metal belt technology closes the draw between the press and dryer section, increases dryness and improves end-product qualities such as strength and porosity.
How to plan a successful rebuild?
Rebuilding a paper or board machine can improve the competitiveness of your business and your processes. But where do you start? Download our e-book to learn how to develop a winning rebuild concept, how to minimize rebuild related risks, and how to ensure smooth ramp up to full production.
Download e-bookCustomer success story with metal belt technology: Even thinner label papers thanks to new metal belt
PM 8 at the Tervasaari mill, which produces label release base papers, went through a renovation that included a press section rebuild along with modifications throughout the paper machine line. The targets were to increase speed and further improve paper quality, as well as increasing the capacity of the paper machine by 30,000 tonnes annually.
The heart of the investment in PM 8 was the rebuild of the existing center roll-based press section with Valmet’s latest innovation: a new steam-heated metal belt application.
The new press section with metal belt technology has delivered what was promised: The draw between press and drying section has decreased significantly. Water removal is more effective as the dryness after the press has increased significantly. The concept also has positive effect on paper quality. Runnability has also improved and thanks to the rebuild the maximum speed of the paper machine has considerably increased.
Want to talk to our press section experts?
If you wish to get further information like technical specifications, need a quotation, or wish to discuss different solutions, fill in the contact form and our experts will contact you shortly.
Contact our expertsExplore our latest board and paper press releases
- Oct 21, 2024Valmet’s change negotiations completed in Finland in its Paper business line’s Board and Paper Mills business unit
- Oct 3, 2024Valmet to supply an OptiConcept M board making line to Anhui Linping Circular Development in China
- Sep 5, 2024Valmet to start change negotiations in Finland in its Paper business line’s Board and Paper Mills business unit
- Aug 16, 2024Valmet and Spinnova Plc sign a partnership agreement regarding process equipment for textile fibre production
- Aug 1, 2024Valmet closes the agreement to acquire majority shares in FactoryPal, a subsidiary of Körber
- Jul 8, 2024Valmet to supply operator training simulator to Graphic Packaging International in Waco, Texas, United States
- Jul 2, 2024Valmet to supply a high-capacity winder to Wuzhou Special Paper in China
- Jun 26, 2024Valmet to supply both a papermaking line and a paper machine rebuild to a customer in Asia-Pacific
- Jun 25, 2024Valmet to deliver a tissue machine to Andhra Paper in India
- Jun 19, 2024Valmet receives the second order of converting lines to Metsä Tissue in Mariestad, Sweden