Patent ID: 6919547

Claim:
A microwave packaging material comprising: a substrate; a microwave interactive material layer supported upon the substrate, wherein the microwave interactive material layer and the substrate together form a laminate material; and an indentation pattern formed in the nature of a plurality of scored impressions in the laminate material, wherein the scored impressions are at least partially defined by the microwave interactive layer and substantially maintain the integrity of the microwave interactive layer, a first side of the microwave interactive layer faces away from the substrate and includes a plurality of substantially flat, coplanar surfaces that are at least partially separated from one another respectively by the scored impressions, the scored impressions extend below the substantially flat, coplanar surfaces of the first side of the microwave interactive layer while the substantially flat, coplanar surfaces are facing upward, the scored impressions are not fold lines, each of the scored impressions is respectively positioned between at least two of the substantially flat, coplanar surfaces of the outer side of the microwave interactive layer, and in a plan view of the first side of the microwave interactive layer: a summation of all areas of the first side that are in the form of the substantially flat, coplanar surfaces exceeds a summation of all areas of the first side that are in the form of the scored impressions.