| 摘要 |
<p>A bag (1) comprising a receptacle (2) and first and second reclosable structures (10, 12) installed inside and across a mouth of the receptacle, the first and second reclosable structures being parallel and spaced apart from each other. At least portions of the first and second reclosable structures bound a passageway (11) within the mouth of the receptacle when the first and second reclosable structures are in fully closed states. The receptacle comprises a vent (20, 20') that is in flow communication with an interior volume of the receptacle via the passageway when both the vent and the first reclosable structure are in at least partially open states. If, while the first and second reclosable structures are in fully closed states, the pressure inside the interior volume is increased sufficiently, the first reclosable structure will open at least partly to allow gas from the interior volume to escape into the passageway while the second reclosable structure remains in a fully closed state.</p> |
