Compact infrared print dryer
02 January 2019
The Infradry Compact from Heraeus Noblelight is a high performance infrared (IR) dryer module for a range of water-based inks and coatings. It combines high power density infrared heating with controlled air introduction and extraction to provide efficient drying.
The heat to dry inks or colours is provided by powerful twin tube IR emitters. These can be of wavelengths from near infrared to medium wave, depending on the specific application. NIR emitters operate at a surface temperature of 2600°C for very rapid, intense drying, while medium wave emitters have a surface temperature of 900°C and offer an efficient mechanism for the removal of water from a product surface.
To remove the heat and water vapour from inside the module, the Infradry Compact features a specially-developed air duct, which feeds an evenly distributed air flow into the module’s drying area, either by internal or external fans. This air is heated by the IR emitters, absorbs the evaporated moisture and then removes it from the drying zone. This prevents saturation of the atmosphere inside the module and precludes leakage of hot air to surrounding, heat-sensitive machine components.
With its very high power density and its extremely efficient reflectors, which concentrate the IR onto the substrate surface, the new Infradry Compact offers very high drying performance. Its compact, modular design and plug-and-play installation allows easy retrofit and it is configurable with a wide range of interfaces, including Profi-Net and RS485. Lamp replacement is quick and easy through a slide-in drawer and an integral pyrometer and stepless power regulation ensure precise control of drying operations.