DryStar UV - Modular UV Technology for Creative Applications
Reliable Drying of UV Inks and Coatings
The advantages of the DryStar system - outstanding flexibility and reliable production - are now also available for UV printing. DryStar dryers and UV dryers from qualified suppliers are fully compatible and interchangeable. This level of integration is achieved by features ranging from a common cooling concept across ozone extraction to the possibility of controlling the UV dryers via the CP2000 Center.
Efficient Temperature Management
Sheet temperature plays a crucial role in UV printing. Because UV lamps also emit infrared (heat radiation), the substrate heats up. The heating effect can be so great that it becomes necessary to let the pile cool down for several hours before proceeding to finishing. When printing on temperature-sensitive plastics, too much heat can cause registration problems. With many dryers, the only remedy is to reduce their output, which means slower production speeds - not a very satisfactory solution.
While developing the DryStar UV, Heidelberg attached great importance to efficient temperature management. To achieve this, the UV radiation is reflected onto the sheet by a special patented "cold mirror reflector" (CMK).
The heat-inducing IR radiation passes right through the mirror and is absorbed by the metal dryer enclosure behind it. This has channels through which water flows to efficiently remove heat from the press.
The lamps are cooled by a continuous stream of air. This keeps them at a constant temperature to ensure consistent drying and brilliant results, while also extending their service life.