| 摘要 |
The envelope is formed from one section (1) and has a front wall (2), a rear wall (4) which is connected to the base, a closure flap (3) and two side flaps (5). The side flaps each have a fold having two side edges (7a,8a) from which one forms the rear wall and the other the front wall. Both side edges of at least one side flap are located are offset with respect to one another. |
