| 摘要 |
PROBLEM TO BE SOLVED: To improve a self-standing property and a holding property of a bag. SOLUTION: An upper corner part subsequent to a side seal 14 of a bag section 13 at a bag 10 is provided with a pouring seal section 16. A seal width of the side seal 14 is expanded upwardly. The side seal 14 and the pouring seal are made to be continuous at a curved line seal 18.
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