| 摘要 |
PROBLEM TO BE SOLVED: To provide a packing bag capable of excellently maintaining both unsealing property and breaking strength.SOLUTION: In a packing bag, a first region A arranged with a plurality of band-like seal parts in a width direction at intervals and a second region B arranged with the single line of the band-like seal part are formed. The first region A and the second region B are alternately arranged to be adjacent in a longitudinal direction of the band-like seal part. The band-like seal part of the second region B has a wide width shape being continuous to the plurality of the band-like seal parts in the neighboring first region A. |
