| 摘要 |
PROBLEM TO BE SOLVED: To provide a using method of a packaging bag in which re-sealing can be achieved with a simple operation, and the sealing like at an initial time can be achieved even many times, even after re-sealing operation is repeated.SOLUTION: A packaging bag is generated by making a bag with the use of a packaging material in which a sealant layer is laminated on an inner surface, containing at least an upper side seal part 16 and side seal parts 14 on both left and right sides, to be used in a state in which an opening end is formed at a portion inside the upper end. A protruding piece P bridging the left and right side seal parts 14 is provided as a protruding state at a position farther inside the portion, being an opening end, on an outside surface of either one side of a front side or a rear side. The protruding piece P is equipped with an intermediate seal part 13 bridging the left and right side seal parts. Re-sealing is made by, with the root portion of the protruding piece P as a base point, folding back a portion which is farther upper side of the protruding piece P of the packaging bag to the side opposite to the protruding member P, toward a lower side portion than the protruding piece P of the packaging bag. |
