| 摘要 |
The bag (1) has a side flap (2) and another side flap, each comprising upper edges (2a, 3a) defining an opening. The former side flap has a bottom edge (2b) located opposite to the opening and connected to corresponding bottom edge of the latter side flap through bottom bellows. The former side flap has side edges (2c, 2d) attached respectively to corresponding side edges of the latter side flap. One of the side flaps has rectilinear pre-folds (7c, 7d) close to and partially separated from one of the side edges, where the pre-fold is extended from the bottom edges to the upper edges. |
