Container closure.

摘要

A jar (1) has its closure (2) sealingly applied by means of a downthrust to compress a gasket (3). The head load applied to the closure of that jar as a result of subsequent stacking of other similar jars on top of the jar in question is limited by engagement of stop means, in this case a rib (5) of the closure with the rim of the jar; so that there is no possibility of permanent deformation of the gasket (3) imparted during such stacking and effective to completely neutralise the residual compression of the gasket which is intended and is actually applied as a result of the closing head load. The arrangement may be such that the closure (2) can be applied by simple downthrust, without the need for a twisting chuck.