| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a package with which cooked or semi-cooked food or the like can be completely sealed, the food can be cooked by heat in a microwave oven while stored in the package, and further an internal pressure in the package is discharged with a part of the package automatically opened while exhibiting effects of steaming the food stored in the package by steam generated during the cooking to prevent the package from breaking or deforming. <P>SOLUTION: A pillow-type packaging bag consists of a rectangular packaging material having an internal layer made of a heat-bonding resin layer. The bag has a back seal formed by aligning and heat-bonding the internal layers at opposite ends with each other and one overhang which is connected with the inner rim of the back seal and extended to be heat-bonded. In addition, it has folds at both side rims formed by heat-bonding both ends orthogonal to the back seal at an end heat-bonding region, and is formed with a cutting edge or a notch within a region of the overhang. <P>COPYRIGHT: (C)2004,JPO |
