| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag capable of preventing fluid substance stored inside from scattering from an opening when it is opened.SOLUTION: The packaging bag 1' includes a bag 2' formed by welding both right and left side parts and lower ends of two sheets 21 and 22 each other, and having an opening 2a at its upper end, and a fastener 3 opening/closing the opening 2a at the upper ends of the sheets 21 and 22, wherein a supporting plate 4 extending in a right-and-left direction along the lower part of the fastener 3 is welded on the inner surface of the sheet 21. The supporting plate 4 has prescribed elasticity well enough to be curved in a bow shape when its both ends are held and compressed. When the sheet 22 is drawn to separate from the sheet 21 in a curved state, the supporting plate 4 keeps the curved state until the fastener 3 is opened, and, besides, it has prescribed rigidity well enough to support the bag 2' inside which an object to be stored is stored. |
