Valmet to collaborate with Metsä Board Husum in Sweden to increase folding boxboard production capacity and to improve efficiency and environmental performance

The order is included in Valmet's orders received of the fourth quarter 2021. The value of the order will not be disclosed. The total value of an order of this type and delivery scope is typically around EUR 70–80 million.

Currently, the annual FBB capacity of BM 1 is 400,000 tonnes, and after the investment it will rise to 600,000 tonnes. Metsä Board is responding to the growing demand for sustainably produced packaging materials that support the circular economy.

“We were looking for one reliable partner who could deliver this extensive project from stock preparation to winders, and additionally support our long-term efficiency improvement efforts. We also demanded quite low CO2 emission levels for the size drying as well as highly automated parent roll logistics. Valmet was able to meet all of these requirements,” says Ari Kiviranta, Senior Vice President, Technology, Metsä Board.

“At Valmet, we are extremely happy to continue this deep collaboration with Metsä Board to develop the Husum Mill further. Our long and trustworthy cooperation with both the customer and the mill have played a key role in this journey,” says Mikko Tani, Area Vice President, Sales and Marketing, Valmet.

Technical information about the delivery
Valmet’s delivery for the BM 1 rebuild will include a Performance Agreement, additional equipment for the stock preparation system, and significant improvements to the whole machine and the following parent roll handling, off-machine coater, and winder.

In 2022, already before the rebuild of BM 1, the life cycle Performance Agreement will be set up by establishing the tools and a common way to operate. The agreement work will be started by improving the current BM 1’s overall equipment efficiency (OEE). The work will continue by supporting the start-up and further optimization of BM 1’s efficiency. The agreement will be based on Valmet's Industrial Internet solutions and Performance Center operations. This collaboration will ensure a first-class start-up and high performance during the entire life cycle of the machine.

For BM 1, Valmet’s delivery will include equipment for stock preparation, and the broke collection system will be upgraded to meet the new requirements. Small improvements will be done in the wet end to improve the runnability and to increase the drying capacity. Most of the improvements will be done in the dry end of BM 1: the drying capacity of the predryer and afterdryer sections will be significantly increased by adding more dryer cylinders, a new OptiSizer Film with supply systems and air dryers, and a new OptiCalender Hard and OptiReel Linear will be also included in the delivery. The existing unwind and reel of the off-machine coater will be upgraded as well. The delivery will also include highly automated transfer rails and parent roll carts, which will connect BM 1, BM 2, and the off-machine coater to a new OptiWin Drum two-drum winder and other winders. All the machines and equipment included in Valmet’s delivery will be delivered installed.

The board machine with a 7,250-mm-wide fabric produces folding boxboard and liquid packaging board with a basis weight range of 155–355 g/m2. The mechanical design speed of the new parts will be 1,000 m/min.