Abstract: The apparatus for producing bags comprises three processing areas (4-6), wherein two foil webs (1, 2) are lying on top of each other in the first processing area (4), are guided separately in a second processing area (5) and again lie on top of each other in a third processing area (6). In the second processing area (5) a spout, e.g. having the shape of a tube, is inserted between the foils and welded to both foils in the third processing area (6). In the first processing area the foils can e.g. be pre-formed or pre-cut. By separating the foil path into these three different processing areas, it becomes possible that the two adjacent foils are pre-processed in the first processing area while there is enough space for introduction of the spout in the second processing area.