UV radiation and vapor-phase hydrogen peroxide sterilization pac

Details UV radiation and vapor-phase hydrogen peroxide sterilization pac UV radiation and vapor-phase hydrogen peroxide sterilization pac

1997-08-15

2000-03-21

McKane, Elizabeth

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using direct contact with electrical or electromagnetic...

422 28, 422304, 53425, A61L 210, A61L 220, B65B 5518, B65B 5510

Patent

active

060399228

ABSTRACT:
The present invention discloses a method and apparatus for sterilizing packaging with vapor-phase hydrogen peroxide and ultraviolet radiation on a packaging machine. A partially formed packaging material is sprayed with gaseous hydrogen peroxide thereby allowing the gas to condense on the packaging material. The packaging material is then conveyed to a UV radiation source for irradiation of the packaging material. The packaging material is then dried with heated air to flush/remove any residual hydrogen peroxide. The present invention sterilizes the packaging material allowing for filling of the packaging material with a desired product such as milk, juice or water. The packaging material may be any number of possibilities such as gable top cartons, parallelepiped containers, flexible pouches, and the like. The invention allows for the efficacious use of hydrogen peroxide having a concentration of up to 53% while providing a packaging material having less than 0.5 ppm hydrogen peroxide.

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