초록 ▼

The invention comprises a threaded plastic closure for a container for pressured fluids, such as a carbonated beverage bottle. The panel portion of the closure abuts the top of the bottle neck or finish to form a top seal, and the wall portion has an internal annular sealing rib for creating a seal

The invention comprises a threaded plastic closure for a container for pressured fluids, such as a carbonated beverage bottle. The panel portion of the closure abuts the top of the bottle neck or finish to form a top seal, and the wall portion has an internal annular sealing rib for creating a seal on an outside cylindrical portion of the bottle finish. The connecting material between the side seal rib and the top seal of the closure is deformed outwardly, away from the finish and is of reduced wall thickness to provide a flexible connection between the top seal and the side sealing rib.

대표청구항 ▼

A plastic closure for sealing a container of pressured fluid, said container having a threaded neck and an external cylindrical sealing wall above the neck threads, said closure comprising a top panel section, an integral depending annular skirt section defining internal threads to cooperate with th

A plastic closure for sealing a container of pressured fluid, said container having a threaded neck and an external cylindrical sealing wall above the neck threads, said closure comprising a top panel section, an integral depending annular skirt section defining internal threads to cooperate with the container neck threads, an annular side sealing rib forming a series connected part of said skirt section extending inwardly from the inside surface of said skirt above said threads and having an internal surface dimensioned to form an interference fit only with said external cylindrical sealing wall of said container, means on said panel portion engaging the top of said container finish to form a top seal with the end face of the container neck, and a flexible annular wall section integrally connecting the periphery of said top panel section and said side sealing rib, said flexible annular wall section being of less thickness than said panel and said annular sealing rib, whereby increased internal container pressure on said top panel section increases the radial compressing force on said side sealing rib.