The invention concerns a method and an apparatus for producing a tubular packaging casing, wherein a film web is fed in a feeding direction to forming means for forming a tubular casing having edge areas which extend in the feeding direction and which are arranged adjacent to each other, and wherein the edge areas are bonded together in a bonding station having one bonding tool. Moreover, the bonding tool can be moved in a first and a second working position for carrying out two alternative processes of firmly bonding in one of each of the working positions for bonding the edge areas of the tubular casing together.