| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that freshness of food during distribution and storage cannot be ensured in a perforated packaging. <P>SOLUTION: A notch 4 is formed at least in one part of an outer peripheral part of a bag body 1 with a pair of face and back side film members 2 and 2a of the food storage bag integrated with each other at the outer peripheral part so as to be bitten in a sealed storage space formed between the film members 2 and 2a. An outer peripheral portion of the notch 4 in the film members 2 and 2a is integrated with a sealed part 5. The seal strength of the sealed part 5 is less than the integrated strength of the outer peripheral part of other bag body 1 so that the sealed part 5 is peeled to open a release hole 6 by the increase of the internal pressure of the sealed storage space 3. When fresh food or the like is stored in the food storage bag, the physiological breathing effect of the fresh food is suppressed to suppress advancement of decomposition, degradation of freshness caused by gas trouble does not occur. In addition, during the cooking by using a microwave oven, steam-cooking can be realized before the internal pressure increased by generated steam reaches a preset pressure. The opened hole 6 is not covered even when the food storage bag is placed in the microwave oven with either side thereof underside, and steam can be released without any trouble. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
