| 摘要 |
To provide a packing bag, with which waste refuse is not generated, used in good appearance after opening, the bag is composed of a rectangular sheet piece 1 of synthetic resin, the sheet piece 1 is folded on two convex folded line portions 18 and a concave folded line portion to form a folded portion 10 serially having a first sheet layer 11, a second sheet layer 12, a third sheet layer 13, and a fourth sheet layer 14 on an end edge portion 1A to form M-shape in longitudinal cross section; the first sheet layer 1 and the second sheet layer 2 are fused, and the third sheet layer 3 and the fourth sheet layer 4 are fused; a separation-prepared line portion 5 to separate the second sheet layer 2 and the third sheet layer is formed along the concave folded line portion 19 between the second sheet layer 2 and the third sheet layer 3; a fastener 4 to mutually seal the second sheet layer 2 and the third sheet layer 3 is provided; and the separation-prepared line portion 5 is disposed on an inner side of the bag to the fastener 4. |
