Abstract: The invention concerns an overcapping cover (1), comprising a head (5) and a skirt (4), and easy-to-open means, consisting of a line of weakness, borne by the skirt, and characterised in that: a) the easy-to-open means comprises at least a so-called lower line of weakness (44) located on the cover at a height H which defines a partition of said cover with a so-called upper part (10) and a so called lower part (11); b) said upper part (10) comprises a gripping tab (46) interposed between notches or recesses (460, 461); c) said cover comprises at least additional means selected among: a second line of weakness (43) in said upper part (10), means reinforcing (67) all or part of the lower part (11) means for fixing (66) on the neck of all or part of said lower part (11), means for reinforcing all or part of said upper part (10), such that when it is opened for the first time, the tear strip (45) formed by pulling the tab (46) removes along with it the whole upper part (10).

Abstract: A bottle cap seal having a long skirt in which the seal is of the type which is used on sparkling wine and champagne bottles.The cap, formed by rolling a thin metal sheet on a punch and by gluing the superposed lateral edges, is formed with a depression in the gluing zone, adjacent its upper edge. The depression operates to prevent excessive penetration of one cap into the other during handling, with the result that the caps are easily adapted for use with automatic distribution and sealing machines.