A packaging machine for processing a carton blank received from a magazine into a formed, filled and sealed carton package. The packaging machine includes an infeed sterilizer mechanism, a carton lift, a form and fill carousel and a sealing mechanism. The infeed sterilizer sterilizes an erected carton blank having an open top end and an open bottom end, and is disposed on a first level of the packaging machine. The carton lift lifts sterilized cartons from the infeed sterilizer mechanism on the first level to a second level. The form and fill carousel is located on the second level and has a central turret with a plurality of filling mandrels connected thereto. Each of the filling mandrels is in flow communication with a product supply and fills the carton as it is lowered for sealing. The sealing jaw mechanism is disposed to receive a filled carton from a mandrel on the form and fill carousel and to seal an open end of the carton.
An apparatus for providing sterilant to a packaging machine is provided. The apparatus comprises a conduit, for a predetermined mix of atomized hydrogen peroxide and air, within a heat exchanger. The heat exchanger is a conduit for steam heat under pressure and comprises and inlet for the steam and an outlet for condensation formed by cooling steam. As the pressurized steam surrounds the conduit heat is transferred to the atomized hydrogen peroxide and air causing the mixture to vaporize. An outlet for hydrogen peroxide vapor is provided at or near a sterilization location in a packaging machine, allowing the vapor to aid in the sterilization of packaging.
An automatic, continuous sterilization system is for use in a form, fill and seal packaging machine for forming, filling and sealing packages. The machine has a turret carrying a plurality of mandrels on which the packages are carried. A bottom panel heating station has a reciprocating bottom panel heater. The sterilization system includes a sterilant source for supplying a sterilant and a sterilant inlet at the bottom panel heater. Packages are positioned on one of the plurality of mandrels and are indexed to the bottom panel heater. The sterilant is introduced to the mandrel when the carton is positioned thereon. Introduction of the sterilant provides a log reduction of microbial colony forming units of at least about 5.9 after ten minutes of machine operation. A method for continuous mandrel sterilization is also disclosed.
