Patent ID: 6660983
Filing Date: 2003-12-09
Classification: B65D,Y10S

Abstract:
Expandable microwave package for holding a food product for popping, puffing or expanding in a microwave oven comprising, in combination: a bag having an interior for holding a charge of food product to be subjected to microwave energy and having a wall including an access opening, with the bag further including a closure portion having an outer periphery of a size greater than the access opening, with the bag including a scal between the closure portion and the wall around the access opening, with the bag expanding into an expanded condition, with the seal being formed from wet seal adhesive which does not vent as the result of or during the popping, puffing or expanding of the food product in the interior of the bag, with the seal being formed by a plurality of spaced, generally parallel bands defining a plurality of spaced, parallel spaces therebetween for resisting any leakage from the interior of the bag through the seal, with one of the wall and the closure portion including a peel element allowing the closure portion to peel from the wall without requiring the failure of the seal, with the seal overlaying the peel element, with the bag further including a chamber including a first, V-shaped, seal portion having first and second legs interconnected at first ends at a juncture with the first and second legs extending at a non-parallel angle relative to each other from the juncture, wherein the juncture is located in the interior of the bag inward of the remaining portions of the seal portion, with the first, V-shaped seal portion being primarily subjected to tensile stress by the expansion of the bag as the result of popping, pulling or expanding of the food product in the interior of the bag resulting in release of pressure from the interior of the bag during the popping, puffing or expanding of the food product in the interior of the bag, with the bag further including a vent opening from the chamber to the outside of the interior of the bag, wherein pressure is released from the interior of the package through the chamber and through the vent opening, with the seal including a second, V-shaped, seal portion having first and second legs interconnected at first ends at a juncture with the first and second legs extending at a non-parallel angle relative to each other from the juncture.