A method for producing plastic molded skins, particularly for motor vehicle interior parts such as for example instrument panels and door trim, wherein the plastic molded skins are built up by successive continuous melting of a plurality of different plastic powders of different properties on surface regions of a heated mold and the surface regions provided with the plastic powders of different properties are separated from one another by webs projecting from the surface of the mold, wherein while a first plastic powder is being melted on, at least one of the surface regions limited by the webs is provided with a covering or mask having a seal provided at its peripheral areas and resting on the webs, wherein the seal is inserted into a groove situated in the covering / mask and disposed within same so as to be movable, wherein the seal is movable within the groove by means of an expandable tube disposed on its underside, wherein a) a first plastic powder is initially deposited onto the mold in a powder spraying process, wherein the mold is maintained at a first temperature during said spraying, b) the temperature of the mold is thereafter increased such that the first plastic powder applied in the powder spraying process will adhere to the unmasked regions of the mold by fusing, c) the covering or mask is removed from the surface of the mold, d) the mold is thereafter placed atop a powder box containing a second plastic powder and tightly sealed to same, wherein the surface of the mold faces the interior of the powder box, e) the mold and the powder box are set into motion/rotation such that the second plastic powder trickles over the surface of the mold, wherein the second plastic powder adheres by means of fusing to the surface of the mold and to the first plastic powder via rotational sintering, f) the temperature of the mold is then increased such that the first and the second plastic powder react completely and fuse into a homogeneous plastic molded skin, g) the mold is removed from the powder box and thereafter cooled such that the homogeneous plastic molded skin can be removed from the mold. a) a first plastic powder is initially deposited onto the mold in a powder spraying process, wherein the mold is maintained at a first temperature during said spraying, b) the temperature of the mold is thereafter increased such that the first plastic powder applied in the powder spraying process will adhere to the unmasked regions of the mold by fusing, c) the covering or mask is removed from the surface of the mold, d) the mold is thereafter placed atop a powder box containing a second plastic powder and tightly sealed to same, wherein the surface of the mold faces the interior of the powder box, e) the mold and the powder box are set into motion/rotation such that the second plastic powder trickles over the surface of the mold, wherein the second plastic powder adheres by means of fusing to the surface of the mold and to the first plastic powder via rotational sintering, f) the temperature of the mold is then increased such that the first and the second plastic powder react completely and fuse into a homogeneous plastic molded skin, g) the mold is removed from the powder box and thereafter cooled such that the homogeneous plastic molded skin can be removed from the mold.