B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 81/34 (2006.01)
Patent
CA 2362274
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 penetration of evanescent 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 microwave irradiation of the foodstuff (22) upon and beyond completion of the microwave heating cycle.
La présente invention concerne un dispositif et un procédé de régulation du réchauffement d'un aliment au four à micro-ondes. L'invention concerne plus particulièrement un emballage alimentaire comprenant une couche de protection (30) contre les micro-ondes faite de plusieurs ouvertures (32) aux dimensions adaptées pour permettre la pénétration de l'énergie évanescente des micro-ondes à l'intérieur de l'emballage. Ladite couche de protection se déplace vers l'extérieur au fur et à mesure que l'emballage se dilate en raison de la production de vapeur d'eau, le volume intérieur de l'emballage étant ainsi protégé contre une sensible irradiation de micro-ondes de l'aliment (22) lorsque s'achève le cycle de réchauffement micro-ondes et par la suite.
Ji Hong
Monforton Randal J.
Fetherstonhaugh & Co.
General Mills Inc.
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