Valmet presents high-efficiency coating driving with minimum energy consumption

 Monday, December 22, 2025

Valmet brings innovative OptiDry Coat air dryers which are designed for high drying capacity. Aided by patented air dryer nozzles, the dryers achieve uniform evaporation with minimum energy consumption, high efficiency and excellent runnability. They can prove that you get the best paper quality and lowest energy consumption with Valmet air dryers.

Features:

• Energy savings
• Less maintenance costs
• Better paper quality
• High drying capacity

Because coating drying is an energy-intensive process, optimising energy consumption is crucial. Air dryers can cut the energy costs of coating drying by up to half. Valmet air dryers offer energy efficiency rates between 70% and 80%, which is significantly higher than the 25% to 35% efficiency typically achieved with infrared (IR) dryers. This translates to energy savings of 50% or more when using air dryers instead of IR dryers. The OptiDry Coat air dryers are suitable for all coated paper and board grades and can be installed both on new machines and as part of rebuilds.

OptiDry Coat air dryers are available in different types to meet a wide range of coating drying requirements. For example:

• The OptiDry Coat high-intensity is an energy-efficient, high-performance air dryer that ensures fast and effective coating drying by optimally removing moisture.
• The OptiDry Coat air dryer is a versatile solution suitable for all coating drying applications, offering flexibility for various heating and layout configurations.

Using OptiDry air dryers provides several benefits:

• Outstanding energy efficiency
• High drying capacity
• Superior end product quality
• Excellent runnability
• Easy and low-cost maintenance
• Improved working environment
• Reduced fire hazard
• Reduced environmental impact

For positions currently equipped with IR dryers, the OptiDry Coat high intensity air dryer offers a highly effective alternative, with numerous successful references in paper and board machines. By adopting the OptiDry air drying family and PowerFloat nozzles, you start to significantly reduce your energy costs.

Upgrade your coating drying process with OptiDry Coat double-pass

To further enhance coating drying processes, OptiDry Coat double-pass takes the standard of high-intensity air drying followed by long air turn drying to a new level. OptiDry Coat double-pass combines three advanced air drying technologies in one compact solution, delivering superior coating quality while saving space and energy.

Why choose OptiDry Coat double-pass?

• Three dryers in one compact frame, saving space and reducing investment costs
• Contactless air drying with an ideal drying strategy for excellent coating and printing quality
• Best energy efficiency on the market with advanced Valmet Air Dryer Nozzles for optimal performance
• Modular and flexible design for all coating applications
• Compatible with multiple heating sources and supports fossil-free energy alternatives
• Three air drying stages for optimal results

The high-intensity air dryer section removes free water quickly to prevent absorption into the baseboard, ensuring a mottling-free surface with superior gloss and smoothness. The turning dryer section uses air to turn the web contactlessly and at a lower temperature, ensuring pigments and binders remain at their optimum temperature.

The moisture control section stabilises coat moisture and temperature with high air speed or heat, delivering perfect print quality without swelling or shrinking.

Sustainable and cost-efficient

OptiDry Coat double-pass is an energy-efficient, reliable and sustainable solution for coating drying. It offers the best energy efficiency on the market and features superior Valmet Air Dryer Nozzles for optimal performance. It supports fossil-free energy alternatives and works with all common heating sources, including electricity, steam and gas.

The design requires less maintenance and improves the working environment by reducing heat and humidity in the machine hall, thanks to its no free draw feature.

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Tags: coating, drying technology, energy, machinery, sustainability, Valmet, wood energy, wood product