Abstract: The invention describes a method for producing a decorative ornamental part, eg a control key, having a symbol in relief that is defined by a clearance gap free as far as possible of webs and connections in the frame of the control key, wherein the decorative ornamental part is back-injected with a plastic melt by the plastic injection moulding process. In order to obtain a surface on the visible side of the inner part which is free of traces of clamping and retaining it is proposed: that the production method consists of a cutting operation to produce the clearance gap, that the stamping punch carrying out the cutting operation remains as a place-holder in the cut contour of the clearance gap during the injection operation, and that the subsequent injection operation producing a bond ensures the exact connection of the contour of the cut free inner part to the frame of the ornamental part.

Abstract: The invention describes a method for producing a decorative ornamental part, eg a control key, having a symbol in relief that is defined by a clearance gap free as far as possible of webs and connections in the frame of the control key, wherein the decorative ornamental part is back-injected with a plastic melt by the plastic injection moulding process. In order to obtain a surface on the visible side of the inner part which is free of traces of clamping and retaining means it is proposed that the production method consists of a cutting operation to produce the clearance gap, that the stamping punch carrying out the cutting operation remains as a place-holder in the cut contour of the clearance gap during the injection operation, and that the subsequent injection operation producing a bond ensures the exact connection of the contour of the cut free inner part to the frame of the ornamental part.

Abstract: A button, knob or control key with an etchable support plate which is engraved on the backside with a fine symbol by laser, erosion or mechanical engraving, which only cuts into the material of the support plate, but not through the support plate. The backside of the support plate is optionally coated. A foil is applied on the laminated layer and affixed thereto. The front side of the support plate is treated with a material-removing substance. The material removal with the material-removing substance is performed until the engraving extending into the support plate is at least partially or completely exposed on the front side. Application of a protective layer to the front side of the support plate from which the material was removed. A function symbol is provided on the button such that it can be backlit. It is engraved in a fine line width providing a sharp optical definition erosion, mechanical engraving.

Abstract: The present invention is concerned with a decorative trim piece consisting substantially of a carrying element of plastic and a decorative plate of thin metal fastened thereon, to decorate the interior, in land vehicles, aircraft or watercraft, predominantly for use as dashboard elements, center console or as door trim strips. The decorative trim piece is characterized in that the completely finished decorative plate is inserted into an injection mold and that the carrying element is injection-molded as an injection molding compound directly onto the back of the decorative plate so that both elements are connected to one another at least in partial areas so solidly that they form a sturdy unit.