Food or edible material: processes – compositions – and products – Treatment of packaged product by electrical or wave energy
Patent
1971-04-26
1978-09-05
Weinstein, Steven L.
Food or edible material: processes, compositions, and products
Treatment of packaged product by electrical or wave energy
426107, 426410, 53434, 53512, B65B 5516, B65B 5518
Patent
active
041121244
ABSTRACT:
Disclosed are a method of and system for packaging commercially sterile foods by placing the sterile food in a plastic container tending towards opacity to visible light radiation and tending towards transparency to ultraviolet radiation. The container is open and the food product is cooled to a temperature slightly above the freezing point of water preparatory to and while in a chamber having an atmosphere of cooled, dry inert, sterile gas. In the chamber, the inert gas and food product are irradiated by ultraviolet energy that propagates through the container. The container is sealed in the chamber, whereby the inert atmosphere is maintained on the surface of the food product while stored in the container, at temperatures slightly above the freezing point of water for prolonged time periods.
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Drisan Packaging Ltd.
Weinstein Steven L.
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