| 摘要 |
<p>The cap (1) has clipable retention units constituted by an external peripheral collar (6) and a prominent peripheral zone (5) that is carried on an internal wall (3) of a flanged or skirt edge (4) of the cap at proximity of its free end. The prominent peripheral zone is constituted by a permanent deformation towards interior of constant thickness that is realized on the flanged or skirt edge of the cap according to a determined profile. A peripheral end (8b) of the prominent peripheral zone is directed towards outside and is enrolled in a volume generated by the cap.</p> |
