| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a handbag made of a plastic film for a disk-like object wherein the disk-like object can be carried while being held horizontal, an appearance is good, an opening has a three-fold film structure, strength when it is hung is large and the opening is covered by a shield film to prevent the object in the bag from being exposed. SOLUTION: Two gusset folds wherein a distance between two outward fold lines 1, 1' is smaller than twice a distance between two inward fold lines 2, 2' are provided at the center of a long tube-like plastic film symmetrically with respect to a center line. The two gusset folds are reversed toward the center line to provide a gusset fold 7 of a three-fold film structure, only a piece of an upper film 5 inward from the distance between the outward fold lines 1, 1' is cut to provide an opening 6, a finger hole is opened on two upper films of the three-fold film structure, and the film is melt-cut by a width of a bag body. |
