Method for producing a plastic moulded part, having the following steps: a) providing a first decorative film which at least partially has an opaque coating; b) introducing at least one decorative element of a decoration into the first decorative film by processing by means of a processing tool, wherein, by means of the processing tool, the opaque coating is at least partially removed in a region processed by means of the processing tool, and/or the opacity of the opaque coating is reduced in a region processed by means of the processing tool, wherein the opaque coating has a transparency in the wavelength region that is visible to the human eye of less than 50% before the introduction of the at least one decorative element by processing by means of the processing tool, wherein, after the introduction of the decoration into the first decorative film, the region processed by means of the processing tool and the region not processed by means of the processing tool have a difference in transparency of at least 5%, and wherein the at least one decorative element introduced by means of the processing tool has at least one line with a line thickness of at least 50 μm; c) providing a second decorative film which is at least regionally transparent or translucent and has a transparency of 5% to 100%; d) placing the decorative films (11, 12) into an injection mould having a first and second mould half, which together form a cavity for moulding the plastic moulded part, wherein the first decorative film is attached to a first wall of the cavity, and the second decorative film is attached to a second wall of the cavity, which lies opposite the first wall; e) back-injecting the decorative films (11, 12) with a plastic compound, such that the first decorative film forms a first rear-side surface and the second decorative film forms a second front-side surface of the plastic moulded part, which lies opposite the first surface, wherein, after back-injecting, at least one backlighting device is attached to the side of the plastic moulded part formed by the first decorative film. a) providing a first decorative film which at least partially has an opaque coating; b) introducing at least one decorative element of a decoration into the first decorative film by processing by means of a processing tool, wherein, by means of the processing tool, the opaque coating is at least partially removed in a region processed by means of the processing tool, and/or the opacity of the opaque coating is reduced in a region processed by means of the processing tool, wherein the opaque coating has a transparency in the wavelength region that is visible to the human eye of less than 50% before the introduction of the at least one decorative element by processing by means of the processing tool, wherein, after the introduction of the decoration into the first decorative film, the region processed by means of the processing tool and the region not processed by means of the processing tool have a difference in transparency of at least 5%, and wherein the at least one decorative element introduced by means of the processing tool has at least one line with a line thickness of at least 50 μm; c) providing a second decorative film which is at least regionally transparent or translucent and has a transparency of 5% to 100%; d) placing the decorative films (11, 12) into an injection mould having a first and second mould half, which together form a cavity for moulding the plastic moulded part, wherein the first decorative film is attached to a first wall of the cavity, and the second decorative film is attached to a second wall of the cavity, which lies opposite the first wall; e) back-injecting the decorative films (11, 12) with a plastic compound, such that the first decorative film forms a first rear-side surface and the second decorative film forms a second front-side surface of the plastic moulded part, which lies opposite the first surface, wherein, after back-injecting, at least one backlighting device is attached to the side of the plastic moulded part formed by the first decorative film.