| 摘要 |
The present invention is concerned with a one-piece pressure resistant container closure including a pilfer proof ring and associated sealing means provided in or towards the crown of the closure whereby it is possible to apply the closure to a container without substantial risk of rupture between a skirt extension portion of the closure constituting a security ring and the remainder of the closure. To this end, there is provided in combination a closure having a crown portion and a skirt depending from the periphery of the crown portion, the skirt including retaining means to cooperate with corresponding means to retain the closure about a container neck, and characterized by a flexible annular sealing ring depending from an internal surface of the closure inclined inwardly towards the closure axis and adapted to engage in sealing relationship with a container neck, a support ring juxtaposed the sealing ring to limit flexing of the sealing ring on application of the closure to a container, the skirt extension having a pilfer proof security portion which, on application to the container neck enters over a security band portion on the neck of the container without rupture. |
