A closure

Abstract

A plastics closure (10) for a container is provided. The closure comprises a top plate (15), with a side skirt (20) depending from the periphery thereof. A sealing strip (45) depends from the top plate (15) and is adapted to sealingly engage a container neck finish (75). The closure (10) also comprises an abutment member (55) including a guide surface (65) for guiding the sealing strip (45) towards the neck finish (75) as the closure is applied, to increase the strength of the seal. The guide surface comprises a guide member (65) which projects from the abutment member (55), thereby minimising friction between the strip (45) and the abutment member (55). The sealing strip (45) is inclined radially towards the neck finish to improve the sealing effect.

Description

technical field

[0001] The present invention generally relates to a plastic closure for a container, in particular to a closure with a sealing structure for sealing a container.

[0002] Therefore, the present invention is particularly suitable for sealing the pressure generated in containers by carbonated beverages and the like. Background technique

[0003] One particularly effective system for providing a seal involves the use of a thin and flexible sealing strip that is suspended from the inner surface of the closure top plate. For example, US patent document US 4,623,070 describes a closure with an annular flexible sealing strip depending from the top plate of the closure. The sealing strip is angled radially outward and is positioned such that when the closure is threaded onto the container, the container neck surface contacts the sealing strip. As the closure is screwed progressively further onto the container, the sealing strip flexes around the outer radius of the...

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