| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealable packaging bag for microwave oven which is easy to handle by eliminating a protrusion at the central back joint section such as a conventional product, and in addition, in which an article to be cooked having a weight can be filled without applying any damage to an area equipped with a vapor discharging mechanism even when a drop-filling is performed from a specified height using a continuous fill-packaging machine, and wherein a vapor can be efficiently discharged when heated by a microwave oven. SOLUTION: This sealed packaging bag for microwave oven is equipped with a vapor-discharging mechanism which can discharge a vapor to the outside from there when heated by a microwave oven. In this case, for the vapor- discharging mechanism, the external layer film and the internal layer film at the back joint section of this sealed packaging bag for microwave oven having the back joint section wherein the internal layer films of the sealed packing bag main body are heat-welded are placed under an unbonded state or a weakly bonded state which is peelable. In such a sealed packaging bag, the back joint section is provided in the vicinity of the end section under a state wherein the back joint section is folded in the direction to the end section at one end of the sealed packaging bag.
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