Patent ID: 8187519

Claim:
A process for the production of a negative or positive die for the production of a surface-structured coating which can be bonded to a sheet-like substrate, and which is formed by application of a liquid plastic material to the surface of the die and subsequent solidification of the plastic material, the die having a surface structure corresponding to the surface structure of the coating, wherein the surface structure contains structure elements in the form of elevations or depressions having a diameter in the range from 10 to 500 μm, a depth or height, respectively, in the range from 20 to 500 μm and a spacing in the range from 10 to 500 μm, wherein structure elements on the surface of the die form an autotypical screen, an amplitude-modulated screen, a frequency-modulated screen or a stochastic screen, and wherein the structure elements are produced by laser engraving, and wherein the die has a fine surface structure in addition to a coarse surface structure, and the fine surface structure has a micro-roughness having a roughness amplitude in the range from 1 to 30 μm and a roughness frequency of from 0.5 to 20 μm.