Device for producing tubular bags sealed on multiple sides

A device for producing tubular bags sealed on multiple sides, the device comprising a forming shoulder for deforming a plane film web into an envelope web, a forming tube which is surrounded by the envelope web, and a longitudinal seal former which surrounds the forming tube and which has a film guide for forming film overlap areas extending in the transport direction of the film web and which comprises a heat sealer for forming longitudinal sealed seams in the film overlap areas, the forming tube having, adjacent to a forming shoulder outlet, a number of fins for forming the film overlap areas, the number of fins corresponding to the number of longitudinal sealed seams, and the film guide having first and second film guide elements, each of which is associated with one of the fins, each fin being disposed between a first and a second film guide element in such a manner that a double guide gap is formed, the first and second film guide elements being adjustable independently of each other in terms of their position relative to the fin, the first film guide elements are each displaceable in at least a first axial direction X1 on a first axis, and the second film guide elements are each displaceable in at least a second axial direction X5 on a second axis, the first axis being different from the second axis.