| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging bag capable of reducing an unsealing force required for releasing an outer layer material when it is used and smoothly releasing from starting releasing to finishing it. <P>SOLUTION: A plurality of hole portions 17 are formed of an inner face half-cut 16 formed on an inner layer material 12b, and an outer layer releasing portion 20 is formed of an outer face half-cut 19 on the outer layer material 12a by surrounding the neighborhood of a region of a plurality of the hole portions 17. Thereby, when the outer layer material 12a is released, only the outer layer releasing portion 20 of the outer layer material 12a is released to open a plurality of the hole portions 17 of the inner layer material 12b, to decrease the releasing area of the outer layer material 12a by a part of the outer layer releasing portion 20, so that the unsealing force can be remarkably reduced and unsealing can be performed by a small force, and unsealing can be done along the outer layer releasing portion 20, and releasing can be smoothly performed by avoiding the influence of the shape of a bottom part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
