| 摘要 |
PROBLEM TO BE SOLVED: To provide a bag in which a deforming process for a discharging opening is easy and which makes it possible to discharge its contents in a stable direction without causing a blockage. SOLUTION: In a self-supporting container 10 made by sealing together a pair of superimposed side-wall films 11 and a bottom-wall film 12 and provided with a discharging opening 14 so formed as to project from a peripheral edge portion, reinforcing lines 17 and 18 whose cross-sections have projecting shapes are formed on the side-wall films 11 of the discharging opening 14, the reinforcing lines 17 and 18 extending asymmetrically on opposite sides with the central line X-X between them in the projecting direction of the discharging opening 14. Each of the reinforcing lines 17 and 18 is formed in a curve that bends on opposite sides with its center line between them, crosses the vertical center line Z-Z of the corresponding side-wall film 11, and extends at least to the middle of it.
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