(57) This relates to a closure for containers wherein there is a relative twisting or
rotation of the closure with respect to the container neck finish in the application
and removal of the closure. In order to reduce the torque required in the removal
of the closure and also to eliminate the lubricant customarily incorporated in the
gasket material of the closure, the closure is of a composite construction including
a ring member and a closure panel, with the ring member being so constructed as to
provide for limited relative axial movement between the closure panel and the ring
member. Thus, when a closure is to be removed, the initial removal torque is very
low in that it is only necessary to rotate the ring member relative to the container
and there is no axial force required to break the seal between the gasket material
and the container neck finish. After an initial relative axial movement between the
ring member and the closure panel and at a time when the ring member has mementum,
the ring member engages the closure panel and moves the same axially to break the
seal between the closure panel and the container with a minimal additional torque
being required. This abstract forms no part of the specification of this application
and is not to be construed as limiting the claims of the application.
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