Ultraviolet energy and vapor-phase hydrogen peroxide sterilizati

Details Ultraviolet energy and vapor-phase hydrogen peroxide sterilizati Ultraviolet energy and vapor-phase hydrogen peroxide sterilizati

1998-08-31

2000-08-01

Moon, Daniel B.

Package making

Methods

Sterilizing cover only

53412, 53167, 531332, 422 24, B65B 5504

Patent

active

060948876

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 carton is sprayed with gaseous hydrogen peroxide from a hydrogen peroxide nozzle. The carton is then conveyed to a UV radiation source for irradiation of the carton with UV energy. The carton is then dried with heated air to flush/remove any residual hydrogen peroxide. The present invention sterilizes the carton allowing for filling of the carton with a desired product such as milk, juice or water. The invention allows for the efficacious use of hydrogen peroxide having a concentration of up to 53% while providing a carton having less than 0.5 ppm hydrogen peroxide.

REFERENCES:
patent: 4289728 (1981-09-01), Peel et al.
patent: 4375145 (1983-03-01), Mosse et al.
patent: 4979347 (1990-12-01), Shibauchi et al.
patent: 5350568 (1994-09-01), Tuckner et al.
patent: 5433920 (1995-07-01), Sizer et al.
patent: 5809739 (1998-09-01), Eno
patent: 5843374 (1998-12-01), Sizer et al.

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