PROBLEM TO BE SOLVED: To provide a package for microwave oven cooking which can completely prevent a container from being deformed due to the closing of an opened steam vent sealing part by a lid body when the package which includes the steam vent sealing part is cooked in a microwave oven.SOLUTION: In the package for microwave oven cooking formed by filling a stuff in a container body formed of a synthetic resin and having a flange part and then heat-sealing the peripheral edge part of the lid body on the flange to tightly close it, the steam vent sealing part is formed by providing the heat sealed portion of the peripheral edge with a projecting part toward the inside direction of the container. In addition, the steam vent sealing part is formed so as to be asymmetrical.COPYRIGHT: (C)2010,JPO&INPIT【課題】蒸気抜きシール部を有する電子レンジ調理用包装体を電子レンジで加熱調理した際に、開口した蒸気抜きシール部が蓋体によって塞がれて容器が変形するのを完全に防止することができる電子レンジ調理用包装体を提供する。【解決手段】フランジ部を有する合成樹脂製の容器本体に内容物を充填し、該フランジ部に蓋体の周縁部をヒートシールして密封した電子レンジ調理用包装体において、該周縁ヒートシール部に容器の内側方向に向かう突出部を設けることによって蒸気抜きシール部を形成し、且つ、前記蒸気抜きシール部の形状を非対称に形成する。【選択図】図3
