초록 ▼

A squeeze-type container package that comprises a flexible resilient container body and a self-sealing closure assembly mounted to the mouth of the container body. The self-sealing closure assembly includes a dispensing valve of one-piece integrally molded elastic construction having an annular base

A squeeze-type container package that comprises a flexible resilient container body and a self-sealing closure assembly mounted to the mouth of the container body. The self-sealing closure assembly includes a dispensing valve of one-piece integrally molded elastic construction having an annular base, an internal wall portion that extends radially inwardly and axially from the base, and a mouth portion that includes a slit opening oriented diametrically of the annular base. Internal stresses within the wall portion bias the slit to the closed position. An annular lip that extends radially outwardly from the valve cooperates with an annular internal rib on the closure for venting the interior of the container body to atmosphere when the container body is released following dispensing of product.

대표청구항 ▼

[ I claim:] [1.] A valve for a self-sealing dispensing closure, said valve comprising a one-piece construction of integrally molded elastic composition that has an annular base, an internal wall portion that extends radially inwardly and axially from said annular base, a mouth portion that includes

[ I claim:] [1.] A valve for a self-sealing dispensing closure, said valve comprising a one-piece construction of integrally molded elastic composition that has an annular base, an internal wall portion that extends radially inwardly and axially from said annular base, a mouth portion that includes a slit opening oriented diametrically of said annular base, lugs on said wall portion that extend radially and axially along said wall portion, said lugs being internally stressed for resiliently biasing said slit closed, and ribs on said mouth portion that extend along each side of said slit, said ribs being internally stressed for maintaining diametric orientation of said slit.