Threaded closure with free-floating liner

A thermoplastic closure for fitment to a container having a threaded neck terminating in a lip which defines an open mouth, said closure comprising:

• a. a circular top wall;
• b. an annular skirt downwardly depending from said top wall, said skirt having about its inside surface a closure thread for cooperation with said neck thread to achieve said fitment;
• c. a circular, flexible liner positioned adjacent said top wall and having a diameter substantially equal to the outside diameter of said lip, said liner being freely rotatable with respect to said closure, and a plurality of studs radially displaced from the center axis of said closure whereby said studs will overlie said container lip when said closure is fitted to said container, said studs having a height such that said studs, prior to the tightening of said closure to said container, do not substantially interfere with said free rotation of said liner but that said studs penetrate the surface of said liner subsequent to said closure being tightened to said container so that said liner is no longer freely rotatable with respect to said closure.