초록 ▼

A self-sealing, tamper-evident closure including a cap body and an integrally-formed gasket valve is provided for use on a container. The cap body includes a tab integrally molded onto a removable frangible portion which breaks away from the cap body and exposes a self-sealing, flexible gasket valve

A self-sealing, tamper-evident closure including a cap body and an integrally-formed gasket valve is provided for use on a container. The cap body includes a tab integrally molded onto a removable frangible portion which breaks away from the cap body and exposes a self-sealing, flexible gasket valve. The gasket valve is molded in place on an inner surface of the cap body and includes a longitudinal slit to provide a dispensing orifice. A method for making a closure of the present invention is also disclosed, wherein an integral cap body is formed by injection molding, a quantity of liquid gasket material is deposited within a pocket formed on the cap body, a flexible gasket valve is formed by the liquid gasket valve material curing in place within the pocket and a longitudinal slit is imposed through the gasket valve to provide a dispensing orifice.

대표청구항 ▼

[ We claim:] [1.] A closure comprising:a cap body having a top wall with an outer perimeter and an inner perimeter, an annular skirt depending downwardly from said outer perimeter, an annular shoulder wall depending downwardly from said inner perimeter and a lower shelf coplanar with a lower end of

[ We claim:] [1.] A closure comprising:a cap body having a top wall with an outer perimeter and an inner perimeter, an annular skirt depending downwardly from said outer perimeter, an annular shoulder wall depending downwardly from said inner perimeter and a lower shelf coplanar with a lower end of said shoulder wall;said annular skirt having a first end opposite said top wall;a frangible portion spaced inwardly from said first end;a gasket valve integrally and concentrically formed on a lower surface of said top wall with an outer periphery surrounding said frangible portion; and,a removable sealing member integrally formed on an upper surface of said frangible member.