Method for producing a packaging film strip for providing a number of individual packaging film parts for packing food or beverages, wherein the packaging film contains for each designated individual packaging film part an area having a printed two-dimensional code as unique packaging or product identifier. The process comprises the steps of providing at least one first substrate film strip (10, 25), applying on one side of said at least one first substrate film strip (10, 25) an artwork printing (20) for each individual packaging film part, depositing a DFC ink area (28) for each individual packaging film part onto the surface of the substrate film strip (10, 12) lying opposite to the artwork printing (20), slitting the packaging film to provide a series of individual packaging film parts running along the longside of the packaging film, ablating the individual DFC ink areas (28) by a computer-controlled laser beam (8) for providing a predetermined and individual code (2, 3, 30) as unique packaging or product identifier, cleaning the surface of the film strip comprising the individual codes (2, 3, 30), and checking the quality of the codes (2, 3, 30).