Fitment and resealable dispensing closure assembly for high-pressure sealing andbi-modal dispensing

摘要

A fitment is provided for incorporation into a closure assembly to provide at least one high-pressure seal suitable for maintaining high-positive pressures in a container having pressurized contents, such as carbonated beverages. The fitment and closure assembly also provide for bi-modal dispensing operations, because the fitment it can be removed from the closure assembly to provide alternative flow characteristics from the container through the closure assembly. The fitment may also be provided with one or more projections adapted to engage a thread on the closure body such that rotation of the closure body relative to the container results in removal of the fitment from the container. The fitment may also be provided with one or more projections for engaging the closure body to limit its movement relative to the container, thereby defining a fully open dispensing position of the closure body. The projection(s) preferably take the form of a plurality of radially extending ratchet shaped projections or the form of a single, helical flange extending around a peripheral surface of the fitment. A closure assembly incorporating the fitment also may include a plurality of seals formed between various features on the fitment and the closure body, which may include a hinged lid, to enhance the sealing characteristics of the closure assembly.