| 摘要 |
<P>PROBLEM TO BE SOLVED: To substantially prevent an opening for releasing the steam from remaining in a bag opened after the bag is heated by the microwave oven, in a packaging bag for a microwave oven capable of releasing steam by automatically opening a predetermined position in accordance with increase of internal pressure due to generation of the steam when the bag is placed in the microwave oven to heat the contents of the bag. <P>SOLUTION: In the packaging bag for the microwave oven, an opening notch 10 is formed near an upper edge of a side edge seal portion 5, a projecting seal portion 11 projecting inwardly from an inner edge of the side edge seal portion 5 is formed to correspond to the position of the notch 10. An inner end of the notch 10 is located near the projecting seal portion 11, at the position brought in contact with the projecting seal portion 11, or within the projecting seal portion 11, and easily peelable films 4 are respectively held by the side edge seal portion 5 around the notch 10 and the projecting seal portion 11. <P>COPYRIGHT: (C)2010,JPO&INPIT |
