Aqua layering technology
Two-layer sheet with one headbox
Valmet's OptiFlo headbox with new innovative Aqua layering technology makes it possible to produce a two-layer sheet with very good layer coverage using only one headbox and forming unit. The Aqua layering technology has been developed for the most challenging stratified solutions where layer purity is a key feature. It produces a perfect, disturbance-free, purely layered structure that boosts strength properties.
30% less starch needed
Prevents mixing of stock layers
Enables feeding of functional additives between stock layers
Investment is both cost and energy efficient
How does Aqua layering technology work?
Valmet’s latest headbox innovations – Aqua layering technology – can be used to improve the internal strength of weak middle ply by feeding starch or other additives between the layers. The new Aqua layering technology uses a thin water layer as a headbox wedge to stabilize layers and to form an even film while layers of stratified paper are being joined together. It prevents the mixing of stock layers and also enables the feeding of functional additives between the stock layers.
Principle of the new Aqua layering technology is described in the image, where the thin water layer is used as a headbox wedge to stabilize layers.
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Contact our expertsNew resource-saving ideas
This type of layering provides possibilities to adjust the quality and especially strength properties. Cost savings can be achieved, for example, by using different furnish qualities, cheaper raw materials, and functional wet end additives between the layers. Furthermore, as layering is done with one headbox and forming section only, the investment is both cost and energy efficient.
30% less starch needed
At PM1 at Dongil Wolsan mill in South-Korea, the new OptiFlo layering headbox enables feeding starch between the layers. This increases significantly the strength properties of the end product while providing cost savings as 30% less starch is needed for the same strength increase. Read more here.
The Aqua layering technology can be combined with both OptiFlo Layering Fourdrinier and OptiFlo Layering Gap headboxes for optimized end-product quality and cost-efficient production.
Read our latest customer success stories about Aqua layering technology deliveries
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-bookLooking for headbox related services?
We provide a wide range of professional headbox maintenance and testing services to get the best out of your headbox. These services make it possible to eliminate web streakiness and jet inaccuracy, to lower the need for slice opening adjustments, and to improve dry weight profiles.
Go to headbox servicesInterested in pilot trials?
We offer the opportunity to experiment and develop paper and board products and processes without having to put your own production on hold. This is very cost-efficient compared to expensive tests in your own production. Follow the activities in the trials on site or remotely through live streaming cameras.
Contact our pilot trial expertsExplore our latest board and paper press releases
- Jan 11, 2024Valmet to supply key technology for Shandong Jin Tian He Paper’s board machine in China
- Oct 25, 2023Valmet has received a major order of multiple technologies from Liansheng Pulp & Paper in China
- Oct 4, 2023Valmet introduces a new rotating consistency measurement for pulp and paper producers
- Sep 26, 2023Valmet to supply a fine paper making line to Yueyang Forest Paper in China
- Aug 31, 2023Valmet to supply key pulp and paper technologies to Naini Papers in India
- Jul 19, 2023Valmet to supply a high-capacity winder to Gascogne Papier in France
- Jul 4, 2023Valmet to supply an OptiFlo headbox and Valmet Conical Refiners to Shree Ajit Pulp and Paper Limited in India
- May 8, 2023Valmet to rebuild ITC’s board machine in India
- Apr 25, 2023Valmet to deliver key technologies for Henan Longyuan Paper’s testliner line in China
- Mar 27, 2023Valmet to supply a new container board making line to DS Smith in Italy
