| 摘要 |
PROBLEM TO BE SOLVED: To provide a plastic bag which is easy to tie its mouth even if a lot of contents have been put in the bag, whose capacity is not reduced, and whose production cost is minimized. SOLUTION: Projections (1) for tying are provided on the right and left of a mouth of the bag, and right and left parts (2) on a bottom of the bag are removed in a form corresponding to the projection (1).
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