Method of forming a metal closure and closure for container

Abstract

A method of forming a releasable closure for a container (10) having a circular opening (10A, 21B, 21), the method comprising releasably securing (23) an annular skirt portion (21) of the closure to aneck portion of the container (10), eg by means of a thread, subsequently locating a separate closing portion (22) of the closure over an opening (10A, 21B, 21) in the skirt portion (21), and irreversibly securing (23) the closing portion (22C, 22) to the skirt portion (21), eg by seaming, to form a closure that closes the opening (10A, 21B, 21) of the container (10) but is releasable therefrom by unscrewing the skirt portion (21) from the neck portion of the container (10). A closure comprising two, initially separate, components is also described: an annular skirt portion (21) and a closingportion (22C, 22) which can be irreversibly secured to the skirt portion (21) after the annular skirt portion (21) has been releasably secured to the neck portion of a container (10). An intermediateproduct comprising a container (10) having an annular skirt portion (21) of a releasable closure releasably secured to a neck portion thereof is also described as well as a method of filling a container (10) comprising the steps of providing a container (10) having an annular skirt portion (21) of a releasable closure releasably secured thereto, filling the container (10) through an opening (10A,21B, 21) in the skirt portion (21) and subsequently locating a separate closing portion (22) of the closure over the opening (10A, 21B, 21) in the skirt portion (21), and irreversibly securing (23) the closing portion (22C, 22) to the skirt portion (21) so as to form a closure that closes the opening (10A, 21B, 21) of the container (10) but is releasable therefrom. The opening (10A, 21B, 21) of the annular skirt portion (21) may simulate the opening (10A, 21B, 21) of a conventional can body and the closing portion (22C, 22) may be of similar form to the can end applied to a conventional can body so the closing portion (22C, 22) can be irreversibly secured to a skirt portion (21) (that has been releasably secured to the neck portion of a container (10)) in a conventional can filling and closing line.

Description

technical field [0001] The invention relates to a method of forming a closure for a container having an opening, in particular a metal closure for a beverage container. The invention also relates to a closure formed by the method, a container having such a closure, an intermediate product during the formation of such a container and a method of filling such a container. The container can be of various sizes, for example it can be a wide mouth container, alternatively the container can be a bottle. In some cases, the container may be designed to hold carbonated beverages. Background technique [0002] Containers and closures for jars and bottles are known, such as those described in the applicant's earlier applications, eg WO2006 / 000774 and WO2011 / 151630. Further developments are disclosed in co-pending applications PCT / GB2015 / 052154 (WO2016 / 012810) and GB1518819.6, which describe integral closures, threaded structures that can secure these closures to containers (thread f...

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