Microwave food package

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 81/34 (2006.01)

Patent

CA 2397530

Apparatus for and method of controlling heating of a foodstuff using microwave energy having a food package with a microwave shielding layer (30) containing a plurality of apertures (32) therein sized to permit entry of both evanescent microwave energy and propagating microwave energy into the interior of the package with the microwave shielding layer being moved outward as the package expands due to generation of water vapor such that an interior volume of the package is subsequently protected against substantial evanescent microwave irradiation of the foodstuff during completion of the microwave heating cycle using propagating microwave energy to further heat the foodstuff.

L'invention concerne un dispositif et un procédé permettant des chauffage un produit alimentaire de manière régulée au moyen d'une énergie micro-ondes. Cette invention comprend un emballage alimentaire comprenant une couche de protection (30) contre les micro ondes contenant une pluralité d'ouvertures (32) dimensionnées de manière à permettre à l'énergie micro-onde évanescente et à l'énergie micro-onde de propagation de pénétrer à l'intérieur de l'emballage. La couche protectrice contre les micro ondes est déplacée vers l'extérieur à mesure que l'emballage se dilate sous l'effet du dégagement de vapeur d'eau, de manière que le volume intérieur de l'emballage est ensuite protégé contre une irradiation importante des aliments par les micro-ondes évanescentes lorsque le cycle de chauffage par micro-ondes s'achève, le chauffage additionnel des aliments étant effectué par l'énergie micro-onde de propagation.

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Profile ID: LFCA-PAI-O-1972016

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