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: Overcap (1, 11, 12) designed to overcap a neck (80) of a bottle (8) closed by a cork (82) containing a liquid to be packaged (83, 84) includes a rolled skirt (3) and a top (2) fixed to the rolled skirt around a circular junction area (4) common to the skirt and the top. The top is formed from a first strip of material chosen to have a nature and thickness so that it can be deformed, typically by stamping between a punch and a die or by thermoforming, to form a crease-free rim around the top. The rim is formed by the peripheral part of the top axially deformed over a height H between 1 and 5 mm, and the is a rim (20,21) that extends around an arc of a circle ? varying from 45 to 90°.

Abstract: The invention concerns an overcap (1, 11, 12) comprising a rolled skirt (3) and a head (2) fixed to said rolled skirt, along a circular junction zone (4) common to said skirt and said head. The invention is characterised in that: 1) said head is made of a first material capable of being deformed to form a head with fold-free rim, the rim having an axial height H between 1 and 5 mm; 2) said rolled skirt (3) comprises an upper end (30)), necked-in over at least a width of 1 mm, co-operating with said rim to form said circular junction zone, the rolled skirt (3) being made of a second strip material (6) with lower mechanical properties than those of the first material (5); 3) the circular junction zone (4), common to the rim (20, 21, 22) and to the upper end (30), extends over a width L not less than 0.5 mm.