According to the Controller General of Patents, Designs & Trade Marks, "The invention relates to a device (1) and a method for producing film tubing (3), comprising; a blow film die (5) having an annular nozzle (4) from which a plastic melt can be extruded in a transport direction (y) for forming the film tubing (3), at least one fluid application unit, at least sections of which are formed in an annular manner and which is arranged downstream the blow film die (5) in a transport direction (y) and which encloses the film tubing (3) in an annular manner, and by means of which a fluid can be conducted onto the film tubing, and at least one ring (20), the diameter of which is greater than the annularly formed area of the fluid application device.