EMBOSSING DEVICE AND A METHOD FOR DEFINING A MICRO-STRUCTURED AREA PRODUCED BY EMBOSSING

摘要

Diffractive microstructured areas (41) are produced on the surface layer (40) of a substrate (30) by pressing the substrate (30) and its surface layer (40) between an embossing member (10) and a backing member (20) to process the surface (40) of the substrate, wherein the surface of the embossing member (10) is provided with a microstructured area (11) corresponding to the microstructured area (41 ) to be produced. According to the invention, the microstructured area (11) of the embossing member (10) is, in at least one direction, wider than the microstructured area (41 ) to be produced. In an embodiment, the width (W2) of the microstructured area (41) to be produced is defined by a bulge (51) located between the substrate (30) and the backing means (20), for example by a metal sheet whose shape corresponds to the shape of the microstructured area (41) to be produced.