| 摘要 |
PROBLEM TO BE SOLVED: To provide a soft packaging container which can be more safely and reliably unsealed. SOLUTION: A bag is formed by tightly joining peripheries of a sheet material such as a laminate comprising a rigid plastic film, a metallic foil and a flexible plastic film. A notch 10 is provided on this joined region 2 by two notched rims 11 continuously comprising smooth curves from an outer periphery 3 of the container. A curve 12 which is smoothly continuous with the outer periphery 3 is formed at an opening end of the notch 10. In addition, a corner 4 which is the closest to the notch 10 among four corners 4 of the soft packaging container 1 is processed into a curve.
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