摘要 |
The present invention provides an insulating microwave heating package with at least one and preferably a multiplicity of latent, uninflated or potential insulation chambers capable of inflating when exposed to microwave energy. The package includes at least two sheets of material bonded together at selected points, patches or along seal lines separated by unsealed areas which define unfilled inflation chambers between the lines, patches or points. Upon exposure to microwave energy, the package and its contents become heated. As a result of this heating process, the unfilled chambers also become heated, causing them to become filled with hot expanding air or moisture vapor. These chambers serve as insulation for the package and enhance heating of the food by reducing heat loss from the package. |