Method of forming metal closures and closures for containers

Abstract

A method of forming a releasable closure for a container (10) having a circular opening (10A, 21B, 21), the method comprising inserting an annular skirt portion (21) of the closure such as Releasably fastened (23) to the neck portion of the container (10) by threads, the separate closure portion (22) of the closure is then positioned over the opening (10A, 21B, 21) in the skirt portion (21) , and the closure portion (22C, 22) is irreversibly fixed (23) to the skirt portion (21), for example by seaming, to form a closure that closes the opening (10A, 21B, 21) of the container (10) but Release from the container is possible by unscrewing the skirt portion (21) from the neck portion of the container (10). Also described is a closure comprising two initially separate parts: an annular skirt portion (21) and a closure portion (22C, 22), after the annular skirt portion (21) has been releasably After being secured to the neck portion of the container (10), the closure portion may be irreversibly secured to the skirt portion (21). Also described is an intermediate product comprising a container (10) having an annular skirt portion (21) of a releasable closure releasably secured to a neck portion of the container , and a method of filling a container (10) is described, the method comprising the steps of: providing a container (10) having an annular skirt portion releasably secured to a releasable closure of the container ( 21), filling the container (10) through the opening (10A, 21B, 21) in the skirt portion (21), and then positioning the separate closure portion (22) of the closure in the opening (10A, 21B, 21) in the skirt portion (21) 10A, 21B, 21), and irreversibly fix (23) the closure portion (22C, 22) to the skirt portion (21) to form a closure that closes the opening (10A, 21B, 21) But can be released from the container. The opening (10A, 21B, 21) of the annular skirt portion (21) can emulate the opening (10A, 21B, 21) of a conventional tank, and the closing portion (22C, 22) can have the same shape as that applied to a conventional tank. The ends are similar in form so that the closure portion (22C, 22) can be irreversibly secured to the skirt portion (21) (the skirt portion has been releasably secured to the container (10) on a conventional can filling and closure production line. on the neck).

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...

AI Technical Summary

Problems solved by technology

These prior art developments attempt to provide a closure capable of securely closing, for example, containers (particularly wide-mouthed containers) whose contents may be under elevated pressure during transport and / or when subjected to high temperatures. ), while still being relatively easy for consumers to remove

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