WETTING METHOD AND WETTING APPARATUS FOR REWETTING AFTER APPLICATION ELEMENT APPLICATION AND VALUE DOCUMENT SUBSTRATE

摘要

In a method for applying an application element to a web (3) of a printing material (19), the printing material (19) is rewetted after the application of the water-impermeable application elements (20) in order to counteract drying out of the printing material (19) caused, for example, by the application. In this case, the moistening is carried out in a structured manner in that areas (23) in which the application elements (20) are applied to the web (3) are omitted during moistening. A device for wetting a web (3) of a printing substrate (19) following application of application elements (20) has a moisture supply device (11) and a moisture-supplied transfer roller (9), which is provided with a web (3 ) has been in contact rolling roll shell (14), which is structured with respect to the transmission of moisture. By means of the moistening of the web (3) after application of the at least one application element (20), a security substrate produced in this way, in particular for producing a value document, a banknote or the like, has a swelling area (22) in which the printing material (19) swells and so a thickness of the printing material (19) is increased. Due to the structured moistening, the source region (22) adjoins the application element (20) without locally stronger swelling and thus caused excessive thickness.