Hot-air Dryers for Printing Machines
Efficient, low-maintenance hot-air drying systems that use a flexible energy source for energy-efficient production in sheetfed and web printing.
When is hot-air drying the right choice?
Hot-air dryers can be used in all sectors of the printing industry. Their key advantages include low operating costs and the flexibility to use various heat sources.
If there is sufficient space available for a hot-air dryer, it is the right choice in terms of energy efficiency, maintenance costs, operating costs, and machine speed.
Technical Principles of Hot-Air Drying
The Duo-Technik Principle combines targeted heating with intelligent heat removal: Process air is evenly directed onto the substrate via high-performance nozzles, absorbs moisture, and removes it directly from the process area.
- Uniform Temperature Distribution: More stable processes across the entire working width.
- Power-Efficient: Demand-based air and power control saves resources.
- Versatile: Seamless inline integration into existing and new systems.
Flexible Heating Sources for Various Applications
Duo-Technik hot-air dryers can be operated using many different energy sources. These include natural gas, hydrogen, steam, thermal oil, and hot water. Biogas, biomethane, and hydrogen are also now being used. The specific design is always application-specific and tailored to the respective use case.
Why choose a Duo#Hot-Air Dryer?
- World-Class Width Control: Our exclusive technology precisely adjusts the drying width to your material. The result: Up to 30% lower energy costs.
- Intelligent Air Management: Speed-controlled fans and adaptive controls minimize warm-up times and power consumption.
- Maximum Substrate Protection: Precise thermal control prevents material warping, even with sensitive papers or films.
- Minimal OPEX: Extremely low maintenance, virtually no wear parts, and low operating costs.
Tailored Hot Air Solutions from Duo-Technik
Duo-Technik offers specialised hot-air dryers for different machine designs. Depending on the plant layout and production requirements, optimised solutions are available for sheet-fed and web-fed processes.
Limitations of Hot Air Technology
For applications with very limited installation space but high drying requirements, infrared technology can offer advantages or serve as a complement to hot-air dryers. In such cases, Duo-Technik offers high-performance infrared dryers or infrared-hot-air hybrid dryers to combine the best of both worlds.
Frequently Asked Questions About Hot-Air Drying
Which should I choose? Hot air or infrared?
This depends on your specific application. We’d be happy to advise you.
Is hot air suitable for high-speed lines?
Yes, our systems are custom-designed for your web speed and ink volumes to ensure complete drying.
Can a hot-air dryer be retrofitted?
Many of our systems can be integrated into existing printing presses as an efficient retrofit.