| 摘要 |
<p>The invention relates to a device (1) for closing bottles containing a liquid under pressure, especially champagne or similar products, of the type comprising a cylindrical, hollow stopper (2) having a longitudinal axis (3) and a lateral surface (6), the stopper (2) being designed to be inserted into the opening (4) of a bottle neck (5) and closed by a transversal surface (7) having a projecting rim (8) that rests on the annular end face (9) of the neck (5); a closing cap (10) having a peripheral portion (11) that engages the annular outer edge (12) of the neck (5); a seal (13) engaged to an inner end (14) of the closing cap (10) and acting on the annular end face (9) of the neck (5) and on the transversal surface (7) of the stopper (2). The seal (13) comprises an annular protuberance (16) extending continuously towards the inside of the bottle and having a first, thick outer portion (30) that acts on an outer portion (18) of the annular end face (9) of the bottle neck (5), and a second, thin portion (31) that extends towards the longitudinal axis (3) in such a way as to act on the annular end face (9) of the neck (5) and on the transversal surface (7) of the stopper (2). <IMAGE></p> |
