| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-supporting bag which can be easily handled in a distribution stage before charge of contents and also can be easily prevented from clogging in the spout when the contents are poured out. SOLUTION: A pair of side wall films 11 and bottom wall films 12 superimposed with each other are sealed to form the bag 10 provided with a spout 14 formed at the peripheral edge. In this case, a shrinkable film member 15 made of thermoplastic resin is arranged between the pair of side wall films 11 so as to cross orthogonally to the pouring direction of the spout 14, and connected to the side face of the side wall films 11. Folding ruled lines 17 are formed along the pouring direction X-X of the spout 14 in the respective side wall films 11 of the spout 14.
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