Closure system for container, having a cap with an annular bead

摘要

Disclosed is a closure system for a container. The system includes a cap, and a ring defining a container opening. The cap includes an essentially circular top wall from which there extends a downward annular skirt having an annular bottom edge and a radially inward face provided with a screw thread. The ring includes an annular rim forming the opening, an annular collar projecting out radially as far as a radially outermost face and a screw thread located between the collar and the rim of the ring. The screw thread of the ring is complementary to the screw thread of the cap. The skirt of the cap includes at least one annular barrier member which projects from the radially inward face and is adapted for bearing in an substantially radial direction against the entire periphery of the radially outermost face of the collar.