Tetra Laval Holdings & Finance S.a.

Novembal USA Inc.

Fabien Flamand

Michel Luzzato

Grégory Antier

Jerome Mezerette

Anthony Gaillard

Ronald Kirk Dodd

Jean-Luc Giraud

Jérome Mezerette

The present disclosure relates to a manufacturing method for a plug for a container neck. In one implementation, a skirt of the plug is molded and provided with an attachment device adapted to removably attach to the container neck and with a permanent retention strip around the container neck. The retention strip is adapted to pass, by folding, from a molding configuration to an operating configuration. A peripheral break line is then cut out in the skirt, adapted so as to be broken during the first opening of the plug. In some implementations, the retention strip may be prefolded and thereby pass from a molding configuration to an intermediate prefolded configuration. The retention strip is then folded until it passes into an operating configuration. In some implementations, the folding of the retention strip may pass the retention strip from an intermediate prefolded configuration to an operating configuration.

Method for manufacturing a plug for a container neck

This method makes it possible to fabricate a stopper () starting from a tubular skirt () suitable for surrounding a container neck, and provided both with retainer means for retaining it permanently around the neck, and also with fastener means for fastening it removably to the neck. In this method, the skirt and a blade () are moved in rotation relative to each other about the axis (X-X) of the skirt so that the blade cuts a peripheral line of weakness in the skirt, which line of weakness is made up firstly of through notches and secondly, between said notches around the periphery of the skirt, of breakable bridges that interconnect, in the same direction as the axis, a non-removable portion of the skirt, which portion is provided with the retainer means, and a removable portion of the skirt, which portion is provided with the fastener means. With a view to improving the method simply and inexpensively, provision is made for the skirt and the blade to be driven relative to each other through an angular stroke that is strictly greater than 360&#xb0;, while progressively modifying the relative axial position between the skirt and the blade by a movement in axial translation (T). The line of weakness is thus in the shape of a helix having its two peripheral ends defining between them a non-breakable strip that permanently interconnects the removable and the non-removable portions of the skirt.

Method and machine for making a stopper for the neck of a container, and stopper as produced by this method

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Saint Bernard, France

Fabien Flamand