Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using direct contact with electrical or electromagnetic...
Patent
1996-10-11
1998-03-24
Marschel, Ardin H.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using direct contact with electrical or electromagnetic...
210748, 422 1, 422 22, 4351731, 4351733, 4352874, C12M 112
Patent
active
057309345
ABSTRACT:
A method and apparatus for sterilizing packaging through irradiation with an excimer ultraviolet lamp which may be integrated on a packaging machine. The excimer ultraviolet lamp emits radiation at a substantially monochromatic wavelength within the ultraviolet band of the electromagnetic spectrum. The excimer ultraviolet lamp is composed of a quartz shell containing one of the following gaseous compounds: Ar.sub.2, Kr.sub.2, Xe.sub.2, ARCl, KrCl, KrF or XeCl. The KrCl gas excimer ultraviolet lamp which generates a wavelength of 222 nanometers is of particular interest for the present invention. In one embodiment, the lamp has a central aperture for flowing through a cooling fluid to remove heat from the lamp. If the excimer ultraviolet lamp is integrated on a form, fill and seal machine, the cooling fluid may be the desired contents filled into a container fabricated on the form, fill and seal machine. The materials sterilized by the present invention are fabricated into many different containers such as flexible pouches, stand-up pouches, parallelpiped containers and gable top cartons. The material may be subjected to a sterilant prior to irradiation by the excimer ultraviolet lamp. The sterilant may be hydrogen peroxide, ozone or the like.
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Catania Michael A.
Marschel Ardin H.
Tetra Laval Holdings & Finance S.A.
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