CLOSURE SYSTEM FOR CONTAINER

摘要

Closure system for a container including a stopper (20) and a collar (10) adapted to engage by screwing in order to seal the opening, the stopper including an upper wall (21) from which in a downwards direction there extends an annular skirt (22) that has a lower annular end (22b) and a radially inner surface fitted with a thread (26), the collar having an annular top (11), an annular flange (17) and a thread (16) complementary to the thread of the stopper provided between the flange and the top of the collar. The skirt (22) of the stopper comprises a projecting annular member (30; 34) forming a barrier, adapted to be supported against the whole periphery of the flange (17) of the collar in a substantially radial direction.