Screw cap and tamper-evident ring, package provided with such a cap, method of manufacturing such a cap and such a package

摘要

The invention relates to a screw cap made of plastic material comprising a stopping section (3); possible means of fluid-tightness (7) added to or integrated with the stopping section (3); and, in one piece with the stopping section (3), a tamper-evident ring (8). According to the invention, the cap comprises a frangible zone (17) of the external section (9) allowing its opening when unscrewing the cap (1) resulting on the one hand in an empty space (18) between the external section (9) and the skirt (5), this empty space (18) being limited in the downstream direction, with respect to the direction of unscrewing the cap (1) by at least one attachment (19) which is non-frangible during the unscrewing of the cap (1) belonging to the said connection means (11), and on the other hand either in a frangible zone (20a), or in a cut (20b), or a solution of continuity (20c) of the internal part (10) such that when the cap (1) is being unscrewed, the tamper-evident band (8) remains attached to the stopping section (3). IMAGE