Method for manufacturing a plastic component, in particular a trim part and/or decorative part of a motor vehicle, said plastic component being composed of a plastic body and of a decorative coating that is connected to the plastic body and forms the visible face of the plastic component, said method comprising the following method steps: i) a film portion that is composed of a support layer and of a decorative layer is disposed as a component part of a film web between two opened tool halves (9, 10) of an injection moulding tool in such a manner that the decorative layer of the film portion faces away from a tool surface that represents a negative shape of the visible face of the plastic component; ii) a heated plasticized plastic compound is injected under pressure into a cavity that is configured between the tool halves (9, 10) when said two tool halves (9, 10) are closed in such a manner that the plasticized plastic compound urges the film portion under contact with the decorative layer against the tool surface of the cavity that represents the negative shape of the visible face of the plastic component, wherein the support layer of the film portion, after completion of the injection of the plastic compound, in the case of a cavity that is filled with the plastic compound bears on the full area of the tool surface of the cavity that represents the negative shape of the visible face of the plastic component; iii) the plastic body is configured from the plastic compound in the cooling of said injected plastic compound and, while forming the plastic component, said plastic body connects in a materially integral manner to the decorative layer of the film portion; iv) the support layer when the tool halves (9, 10) are opened, or thereafter, is removed from the decorative layer that is connected in a materially integral manner to the plastic body and forms the visible face of the plastic component, wherein - the plasticized plastic compound from a side that faces away from the decorative layer is injected through a cut-out in the film portion into the cavity that is disposed between the two tool halves (9, 10) of the injection moulding tool, and - the cut-out is incorporated into the film web during a closing movement of the opened tool halves (9, 10), and - the cut-out is incorporated into the film portion of the film web which, in the case of closed tool halves (9, 10), is disposed in the cavity. i) a film portion that is composed of a support layer and of a decorative layer is disposed as a component part of a film web between two opened tool halves (9, 10) of an injection moulding tool in such a manner that the decorative layer of the film portion faces away from a tool surface that represents a negative shape of the visible face of the plastic component; ii) a heated plasticized plastic compound is injected under pressure into a cavity that is configured between the tool halves (9, 10) when said two tool halves (9, 10) are closed in such a manner that the plasticized plastic compound urges the film portion under contact with the decorative layer against the tool surface of the cavity that represents the negative shape of the visible face of the plastic component, wherein the support layer of the film portion, after completion of the injection of the plastic compound, in the case of a cavity that is filled with the plastic compound bears on the full area of the tool surface of the cavity that represents the negative shape of the visible face of the plastic component; iii) the plastic body is configured from the plastic compound in the cooling of said injected plastic compound and, while forming the plastic component, said plastic body connects in a materially integral manner to the decorative layer of the film portion; iv) the support layer when the tool halves (9, 10) are opened, or thereafter, is removed from the decorative layer that is connected in a materially integral manner to the plastic body and forms the visible face of the plastic component, - the plasticized plastic compound from a side that faces away from the decorative layer is injected through a cut-out in the film portion into the cavity that is disposed between the two tool halves (9, 10) of the injection moulding tool, and - the cut-out is incorporated into the film web during a closing movement of the opened tool halves (9, 10), and - the cut-out is incorporated into the film portion of the film web which, in the case of closed tool halves (9, 10), is disposed in the cavity.