A DEVICE FOR CLOSING, WITH A SECURITY SEAL, A CONTAINER OF A RIGID MATERIAL, SUCH AS GLASS, BY MEANS OF A SCREW CAP OF RIGID THERMOPLASTICS MATERIAL

摘要

The end wall (1) of a screw cap (A) a rigid thermoplastic material has a sealing ring (3) plastisol thermopolymérisé, and the cylindrical skirt (2) of said lid comprises a multiple internal thread at its end top, a tear strip (5) via opening and a lower portion (7) having an inner annular rib attachment (8) engaging in an annular rib (13) of triangular cross section, located below the thread (12) of the threaded neck (B) of a rigid container. The annular rib (8) of the cover (A) is interrupted in a plurality of zones (9) and the neck (B) of the container comprises a plurality of projections (16) corresponding, which extend downwardly from the base of the triangular rib (13), and when completed the first screw of the cover (a) are each positioned in one of the interrupted zones (19) of the rib (8) of the cover (a), to prevent both accidental limited unscrewing it and its too hard screwing, ensuring the tightness of the closure in both cases.