| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging container for by microwave cooking in which a projecting part is formed over the entire periphery of a flange part of the packaging container, a lid body is heat-sealed to the projecting part, any positional deviation of an inwardly projecting part forming an automatic opening part generated when heat-sealing the lid body is eliminated, melting of the flange part inward of the container of the projecting part and forming of any resin pool are prevented, the taste of a content is enhanced by the steaming effect during the heat-cooking by the microwave oven, and the lid body is reliably and automatically opened from the projecting part by the increase of the pressure in the container. <P>SOLUTION: In the packaging container for by microwave cooking in which the projecting part is formed over the entire periphery of the flange part of a synthetic resin-made container body, and the lid body is heat-sealed to the projecting part, the projecting part inward of the container is formed on the heat-sealed part, and the seal width of the projecting part is larger than the seal width of a peripheral edge other than the projecting part. <P>COPYRIGHT: (C)2009,JPO&INPIT |
