| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing structure for fixing without squeezing the circumference of an opening 4, for generating no level difference on the inside face of the opening and for opening/closing the opening fixedly with just one touch. SOLUTION: A bag 3 is formed of a front face 1 and a back face 2 facing each other, and is provided with an opening 4 in the corner area of the bag 3, and an inverting part 5 near the opening 4 closer to the center than the opening 4 in the corner area of the bag 3. The opening 4 opens when the part 5 is bulged and the opening 4 is closed when the part 5 is sagged. The part 5 is formed hollow for fixing the part 5 in the bulged and the sagged conditions. Each edge of the opening 4 is closed in a lightly curved parallel line condition and is not wrinkled. Since the opening 4 is fixed to open/close by the external pressure of the part 5 on the outside face, a level difference is not generated on the inside face of the opening 4 causing no problem such as a powder body, a content, is caught and does not come out easily or the open/close of the opening 4 is disturbed by the powder body fitted in a level difference. COPYRIGHT: (C)2011,JPO&INPIT
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