| 摘要 |
PROBLEM TO BE SOLVED: To provide a gusset packaging bag, which can be opened with a neat open shape with desired size, at an optional portion of an upper face, and which can be used as a container after opening.SOLUTION: A gusset packaging bag comprises: a bottom face film 10a; a pair of facing side face films 10b, 10c coupled to both end edges of the bottom face film respectively, and on which a folding is formed respectively; and an upper face film 10d coupled to upper end edges of the side face films, in which an almost center part is a hutt seam type, and a back seal part 13 is provided, in which the gusset packaging bag is formed into a cylindrical body whose both ends are opened, one opening 10e is sealed in advance, the other opening 10f is sealed after filling a packed object in the gusset packaging bag. The upper face film 10d has open cut lines 11 on both end edges, and is heat deposited to end edges of the side face films, and the back seal part comprises a tear cut line 12.SELECTED DRAWING: Figure 1 |
