| 摘要 |
An opening/closing system, particularly for packaging bags, of the type that includes a planar base part defining at least in part an opening through itself, this base part includes guide means parallel to the opening and engaging with guide means belonging to a slider designed to close the opening or leave it open, which system is characterized in that, before the system is used for the first time, the opening is closed at least partly by a layer of material, and in that the slider includes a cursor directed toward the opening and capable of at least partly destroying the layer of material to open the opening when the slider is moved for the first time. |
