Device for inerting in UV irradiation in open-flow systems

摘要

The invention relates to a device for inerting the radiation zone in the UV crosslinking and the photochemical surface structuring of acrylate and methacrylate-based coatings on sheet or plate-shaped substrates, in particular with high demands on a low and evenly distributed lateral oxygen level, depending on the application 100 ppm, 50 ppm and 10 ppm, in an irradiation channel with inert gas feed, preferably high-purity nitrogen, formed from the irradiation channel for UV curing or for a combination of excimer VUV matting and UV curing with a flow zone (1), transport device ( 2) or web goods (13), inlet panel (3), covering nozzle (4), volume filling nozzle (6), excimer lamp with nitrogen feed (7) through the lamp ceiling, mercury UV medium pressure lamp (8) with quartz disc or UV LED unit ( 9), residual oxygen measuring probe with sensor (10) and when coating plate-shaped subs occurred on the outlet-side gas barrier, designed as a sealing lip or brush or the like (11) or, when irradiated, coated sheet goods were designed as a labyrinth (15), which is characterized in that the radiation channel (1) is designed by a flat design so that a high relative speed between Inert gas and product surface are generated without disturbing the liquid coating and that the inlet panel (3) and the outlet-side gas barrier (11 or 15) are formed from height-adjustable segments (12).