| 摘要 |
The cap, consisting of a lateral skirt (1) with an internal thread, a lower security strip and a top plate (2), has a seal in the form of an inner shoulder (4) in the zone where the skirt adjoins the top plate, equipped with an elastic peripheral lip (3) which points downwards when at rest and fits between a radial projection (41) on the shoulder and the rounded outer edge (b) of the container neck (C) when the cap is closed. A variant of the design has a second annular seal lip interacting with the inner edge of the container neck, and the lip can be carried by a separate component fitted inside the cap. |
