| 摘要 |
The invention relates to the field of packaging for a consumable product, the packaging being provided with a wall (15) provided with an orifice (13). The packaging is fitted with an opening and closing device (1) comprising a single-piece body (2) of molded material fastened on the wall (15), the body (2) comprising a plate (20) with a first hole (30) placed facing the orifice (13) and fastened to the edge (19) of the orifice (13) in the wall (15) in sealed manner, and a hatch (40) hinged to the plate (20), the hatch opening towards the inside of the packaging and being suitable for covering the first hole (30) in a closed position, the device (1) further including an arm (50) connected to the hatch (40), the arm (50) co-operating with position blocking means for holding the hatch (40) in a closed position, and for releasing the hatch (40) to pivot towards the inside of the packaging when it is disengaged from the blocking means, the device (1) further including a cap (80) that is distinct from the body (2) and from the arm (50), and that is provided with a safety capsule (100, 104) that is to be broken on first opening of the hatch (40) such that if the safety capsule is intact, it is guaranteed that the packaging has not been opened previously, the capsule forming a portion of the blocking means. The hatch (40) is provided with a second hole (70) providing communication between the inside and the outside of the packaging, and the arm (50) is provided with a gasket (57) that shuts the second hole (70) in sealed manner when the arm (50) co-operates with the blocking means, such that in the closed position, the device (1) closes the packaging in sealed manner, the gasket (57) releasing the second hole (70) when the arm (50) is disengaged from the blocking means and the pivot angle &bgr; of the arm relative to its closed position is greater than a strictly positive threshold angle &bgr;0. |
