| abstract |
When a microwave cooking packaging body having a steam release seal portion is cooked in a microwave oven, the steam release seal portion of the microwave cooking packaging body is completely peeled to the side to open steam. Provided is a microwave oven cooking package capable of completely preventing a container from being deformed by closing a punched seal portion with a lid. In a packaging for microwave oven cooking, in which a synthetic resin container body having a flange portion is filled with contents, and the peripheral portion of a lid is heat sealed to the flange portion, the peripheral heat seal portion A steam release seal portion is formed by providing a protruding portion toward the inner side of the container, and the seal width t 1 of the peripheral seal portion, the seal width t 2 of the side portion of the protrusion portion, and the seal of the tip portion of the protrusion portion Assume that width t 3 satisfies the following equations (1) and (2): t 3 > t 2 (1) t 1 ≧ t 2 (2) [Selection] Figure 3 |