| 摘要 |
<p>1. A screw-type sealing cap (1), for a container (5) whose neck (4) is provided with a tear-off cover (6), comprising internally a spiral blade (12) which, when the cap is screwed on the neck (4) of the container, penetrates into the aforementioned cover (6) and cuts away a portion thereof, characterised in that the blade (12) has a so-called "trailing" end (12'), with respect to the direction of rotation of the blade (12), which is bent towards the inside of the spiral blade so as to raise the cover (6).</p> |
