Packaging body for microwave oven heating with conductive heating layer and heating method of food material sealed therein

摘要

Problem to be solved: to provide a microwave oven heating packaging body having a conductive heat generating layer which generates heat in a desired state regardless of the output state of the microwave irradiation and a heating method of the food material sealed therein.A packaging body (100) for microwave oven heating includes a first sheet member (1).A conductive heat generating layer (14) is formed on the first sheet member (1) in addition to the substrate layer (12) and the sealant layer (13).A conductive heating layer (14) is provided with a plurality of islands including conductive material made of an organic compound, and a bridge portion including the conductive material and connecting an adjacent island portion.In the microwave oven heating, the conductive heat generating layer (14) generates heat, thereby reducing a portion of the sealant layer (13) adjacent to the portion (the outlet of the steam outlet (5)) to form a steam outlet.When the output state of the microwave radiated by the microwave oven is high, and the bridge portion is heated excessively, the bridge portion separates the connection between the islands, and generates the island portion individually.