| abstract |
A method for producing a layer arrangement in plate, sheet, or web form, having a photocatalytically active functional layer ( 4 ), comprising the steps of: providing a decorative or transparent substrate for coating; applying a solvent-free topcoat material comprising a radiation-curable binder, to produce a topcoat layer ( 3 ); applying a functional coating material which comprises a photocatalytically active substance and also an aqueous, dryable and also radiation-curable binder, to produce the photocatalytically active functional layer ( 4 ); jointly irradiating the topcoat material and the functional coating material, and hence further-crosslinking, the respective radiation-curable binders, wherein the radiation-curable binder of the topcoat material is preliminarily crosslinked by irradiation, but not cured, and in that the functional coating material is physically dried before the joint irradiation of the topcoat material and of the functional coating material, and wherein the dried functional coating material, is subjected prior to curing, to a surface treatment in the form of a corona treatment and/or a plasma treatment, in which binder of the dried functional coating material is removed. |