spray edge 5 of the bell cup 3 as exactly as possible that is to say without a radial overlapping or a radial spacing in relation to the spray edge 5 the second shaping air nozzle annulus with the twisted shaping air nozzles 7 is therefore slightly inwardly offset in the radial direction with respect to the first shaping air nozzle annulus with the axially orientated shaping air nozzles 6 the radial offset being dimensioned in accordance with the angle of twist of the shaping air nozzles 7 in such a manner that the shaping air exiting from the twisted shaping air nozzles 7 impinges onto the spray edge 5 of the bell cup 3 exactly the axially orientated shaping air nozzles here have a nozzle diameter of 0 7 mm whilst an axial spacing a 6 3 mm lies between the spray edge 5 of the bell cup 3 and the shaping air nozzles 6 this has the consequence that the shaping air jets exiting from the axially orientated shaping air nozzles 6 overlap slightly in the circumferential direction at the spray edge 5 of the bell cup 3 the twisted shaping air nozzles 7 by contrast have a nozzle diameter of 0 65 mm which is slightly smaller than the nozzle diameter of the axially orientated shaping air nozzles 6 this makes sense as the shaping air jets exiting from the twisted shaping air nozzles 7 cover a longer distance until impinging onto the spray edge 5 of the bell cup 3 and therefore expand to a greater extent the reduction of the nozzle diameter of the twisted shaping air nozzles 7 compared to the axially orientated shaping.