| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily unsealable packaging bag in which even a breakable content can be easily and reliably unsealed, the content and a film can be easily separated from each other even in a gusset type package with the content such as sweet jellied bean-paste being tightly attached to the film, an unsealing end can be easily opened, and any trouble hardly occurs during the unsealing. SOLUTION: A substantially axis-symmetric packaging bag is constituted of a laminate film consisting of a base layer and a heat-bonding resin layer with the heat-bonding resin layer inside. One end in the axial direction is sealed, and the laminate film has a straight cutting property in the direction substantially parallel to the axial direction. The end comprises a substantially trapezoidal unsealing tab part and an easily unsealable and sealed heat-bonded part. The heat-bonded part has at least one shape to be converged in an inverted V-shape toward the end. COPYRIGHT: (C)2006,JPO&NCIPI
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