Patent ID: 7229681

Claim:
Device for satinizing and embossing flat materials, comprising a first embossing roll including individual embossing teeth and satinizing teeth and at least one mating roll, said rolls being connected to a driving system and adapted to be driven individually or in common and to be resiliently pressed against one another, the individual embossing teeth of said embossing roll being flattened, and the embossing teeth being designed so as to produce in corresponding locations of said flat material during its passage through the rollers, embossed variable marks whose appearance varies according to at least one of a viewing angle of the observer, a kind of light source, and a position of the lighting source, wherein the embossing teeth which produce said variable marks have at least one of a different geometrical shape and surface than the satinizing teeth which are intended for satinizing, and wherein at least one of the surface of said embossing teeth and portions of a tooth space bottom of said embossing roll are provided with microstructures that are located in an ordered and predefined pattern on the at least one of the surface of said embossing teeth and portions of the tooth space bottom of said embossing roll.