Patent ID: 6884978

Claim:
Expandable microwave package for holding a food product for heating in a microwave oven creating internal vapor pressure, comprising, in combination: a bag having an interior for holding a charge of food product to be subjected to microwave energy, with the bag having a first wall and a second wall, with the interior being at least partially defined by the first and second walls, with the bag holding the food product before heating having a collapsed condition with the first wall overlaying the second wall and with the bag having an expanded condition after heating the food product thereby releasing vapor or gas; an aperture formed in one of the first and second walls; and a coupler bonding the first and second walls together, with the coupler having an outer periphery, with the aperture located within the outer periphery, with the coupler and the first and second walls preventing communication with the interior through the aperture before heating of the food product, with the coupler at least partially releasing bonding of the first and second walls allowing communication with the interior through the aperture during heating of the food product.