Patent ID: 9529264
Filing Date: 2016-12-27
CPC Classification: B05B,B30B,B44B,C23F,G03F

Claim Text:
1. A method for the surface structuring of a metal press plate or endless strip used for pressing, comprising the steps of: seating the press plate or endless strip on a work table with a flat surface to apply and harden a mask, wherein the press plate or endless strip is held on the flat surface by means of a vacuum generated by a vacuum device, and wherein the flat surface comprises a plurality of flat sub-surfaces each having a suction opening connected to the vacuum and the sub-surfaces are spaced apart in a regular two-dimensional array along the length and width of the flat surface in such a way that large press plates with a width of up to 3 meters and a length of up to 8 meters can be processed, applying the mask for partial passivation, comprised at least in part of a hardenable UV lacquer, with a spray head by means of a digitalized printing method, wherein the spray head is guided by means of a digitalized template, which is identical to the printed image of an impregnated paper used in a further pressing process, wherein the UV-hardening lacquer is preheated prior to the application and is applied at a constant temperature, the temperature of the UV-hardening lacquer being maintained at 50° C. to 100° C., wherein the spray head has a plurality of nozzles which are arranged in the form of a matrix and are actuated individually and a random selection of a nozzle from the matrix is made for the printing of a specified pattern dot to be printed, the randomly selected nozzle printing the dot when it passes over the area to be printed, and wherein the spray head is guided at a constant, short distance of 0.1 to 4 mm from the surface of the press plate or endless strip, at least partially irradiating the mask with a UV light source immediately after the application for hardening, chemically processing the surface of the press plate or the endless strip.