| 摘要 |
A can (1) made from metal or plastic including a cap (5) with an annular sealing element (25). A sealing lip (29) is formed on the sealing element that is essentially aligned radially outwardly. The lip contacts an apex (S) of the upper rim of the container (3) when the cap (5) is put on and twisted tight. In case of an overpressure inside the can (1), gas can exit by lifting the sealing lip (29). In case of a higher exterior pressure p0, the sealing lip (29) is pressed with greater force against the container (3) and prevents the entry of any air.
|
