Closure system for containers and related container and process for the realization
AssigneeBrevetti Angela S.r.l.
InventorRoberto Consolaro
Life of this patent
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Abstract
A closure system and method of forming containers comprising a closing element. The closing element is integrally sealable to the container at one of the openings to be closed, and a preferential separation zone between the container and the closing element, the closure system comprising a first guiding and/or coupling portion for guiding and controlling the movement of the closing element from a first blocking position, wherein the closing element is integral to the container, to a second unblocking position, wherein the closing element is separated from the container via the preferential separation zone. The closure system further includes a first thread on the insert and a second thread formed within the closing element.
Claims10
A process for forming a container equipped with a closure system, comprising:
- a closing element integrally sealable with at least one opening of the container, and a preferential separation zone between said container and said closing element, said closure system further comprising:
- first guiding or coupling portion for guiding and controlling the movement of the closing element from a first blocking position, wherein the closing element is integral with the container, to a second unblocking position, wherein the closing element is separated from the container via the separation zone, wherein the process of forming the container comprises:
- extruding a tube of plastic material at a melting temperature of the plastic material;
- inserting the tube in a mold comprising two halves for forming the container;
- closing a first part of the tube, for forming a hollow body of the container;
- and
- blowing, venting, and closing a second part of the container, wherein the guiding or coupling portion comprises a first thread on an insert placed within the container, in correspondence of the opening to close off the container, and equipped with a set diameter, said first thread acting as a countermold for forming and mating with a second thread on the closing element.
A process for forming a filled container having a re-closable closing element, comprising:
- extruding a tube of plastic material at a melting temperature of the plastic material;
- inserting the extruded tube of plastic material into a mold comprising two halves;
- closing a first part of the tube;
- inflating the extruded tube of plastic within the mold to form an expanded portion of the extruded tube of plastic within the mold;
- providing an insert to a portion of the extruded tube of plastic, wherein the insert comprises a first thread;
- and
- forming the re-closable closing element between the insert and a second mold, wherein the re-closable closing element conforms to the mold and the first thread to form a second thread that mates with and is selectively engageable with the first thread.
Dependencies are inferred from the claim text.