Stopper for a container

Abstract

A stopper for a container with a lid with a peripheral wall engaging around the neck of the container and with an olive seal provided with an outer, peripheral annular bead for jamming engagement in the container opening includes an inner surface of the olive seal having a ribbed wall surface, which is defined by a plurality of grooves and webs extending in the longitudinal direction on the wall of the olive seal.

1 . A stopper for a container with a lid with a peripheral wall engaging around the neck of the container and with an olive seal provided with an outer, peripheral annular bead for gripping engagement in the container opening, the stopper comprising an inner surface of the olive seal having a ribbed wall surface, which is defined by a plurality of grooves and webs extending in the longitudinal direction on the wall of the olive seal. 
     
     
         2 . A stopper as claimed in  claim 1 , wherein the grooves have a shape and depth which is constant in the longitudinal direction. 
     
     
         3 . A stopper as claimed in  claim 1 , wherein the grooves have a depth of 10% to 50% of the minimum wall thickness of the olive seal. 
     
     
         4 . A stopper as claimed in  claim 1 , wherein the webs between the grooves have a domed cross-sectional shape. 
     
     
         5 . A stopper as claimed in  claim 1 , wherein the lid has a continuous circular shape and that the olive seal is integrally formed on the lid. 
     
     
         6 . A stopper as claimed in  claim 1 , wherein formed in the lid there is a circular, concentric recessed channel, which includes a radially outer annular wall and a radially inner annular wall, which are connected by a base wall and that the radially outer annular wall is formed as the olive seal. 
     
     
         7 . A stopper as claimed in  claim 1 , wherein integrally formed on the lower edge of the peripheral wall there is a peripheral security ring, which may be torn off, for tamper-evident security of the contents of the container with inwardly directed locking formations, which, in the fastened position of the stopper, engage below an outwardly directed annular projection on the container. 
     
     
         8 . A stopper as claimed in  claim 1 , wherein the stopper consists of LDPE.