Container closure having an improved liner

Claim 1

A container closure for a container having an upwardly facing annular surface forming an opening therein having an outer opening diameter and an inner opening diameter, said closure including a metal shell having a circular top surface and a substantially cylindrical skirt depending from the peripheral edge of the top surface, and a synthetic resin liner press-formed on the inside top surface of the shell; the improvement comprising in that said liner has at least first and second circular projecting rims on the surface thereof opposite said inside top surface of the shell and where the second rim has an inner end second rim diameter and an outer second rim diameter, in that the first rim is positioned radially outwardly of the second rim and has an inner circumferential surface adapted to engage an outer circumferential surface of a container when said closure is sealed to said container, in that said second rim has a height greater than a height of said first rim, in that said second inner rim diameter is greater than said inner opening diameter, and in that said second rim is adapted to engage the upwardly facing surface of said container during initial application of said liner to said container and when sealed to said container.