Abstract: A unit (3) for sterilizing strip packaging material (2) with preapplied opening devices (5) on a packaging machine (1) for packaging pourable food products, the unit (3) having a bath (8) for containing a sterilizing agent in which the material (2) is fed continuously, and an aseptic chamber (15) having an input (12) connected to an output of the bath (8); the aseptic chamber (15) houses two drying rollers (20) cooperating with opposite faces of the material (2) and having respective recesses (20a) at a longitudinal portion (2a) of the material (2) fitted with the opening devices (5), and two nozzles (27) for directing sterile air onto the longitudinal portion (2a) of the material (2).

Abstract: A unit (3) for sterilizing strip packaging material (2) on a packaging machine (1) for packaging pourable food products, the unit (3) having a bath (8) for containing a sterilizing agent in which the packaging material is fed continuously; an aseptic chamber (15) having an input (12) connected to an output of the bath (8); and an auxiliary recirculating circuit (28) having a blower (30) for aspirating air from the aseptic chamber (15), and two nozzles (27) located close to the input (12) of the aseptic chamber (15) to direct a jet of sterile air onto an intermediate longitudinal portion (2a) of the packaging material (2) having preapplied opening devices (5).