PACKAGING CONTAINER FOR MICROWAVE OVEN

PROBLEM TO BE SOLVED: To provide a packaging container for a microwave oven which facilitates recognition that cooking of contents in the packaging container is completed and the packaging container is opened spontaneously and is capable of avoiding the danger of spilling the contents and scalding by touching an opening section, by processing a wrapping material itself forming the packaging container for the microwave oven, such as a packaging bag, a cup and a tray, without requiring a special member or a complicated process. SOLUTION: The packaging container for microwave oven which is provided with a steam vent sealing section having a weakened section in the packaging container sealed by heat-sealing a plastic film is provided with a sign appearance means. The sign appearance means shows the steam vent sealing section into a different color from the color of a circumference section as seen from the outside of the container by changing the separation face into an opaque or white color with separation due to the cohesive failure of the steam vent sealing section. COPYRIGHT: (C)2007,JPO&INPIT