Amcor Flexibles Capsules France

Alcan Packaging Capsules

Andre Luciani

Jacques Granger

Jean-Marie Bourreau

The invention relates to a stopper capsule, having an axial direction, including a shell, with a head, a skirt, and a joint, where a) the joint is a form joint, b) the form joint has b1) a resilient layer, a set of adjacent layers, b2.1) a barrier layer, b2.2) a malleable support layer with the function of providing the set of adjacent layers a global malleable property such that the joint can be shaped without creation of folds, b2.3) an outer layer having an outer surface which can be compressed by the axial compression resulting from stoppering such as to match the form of the mouth of the neck. The invention further relates to a method of production of the capsule and a method of stoppering.

Corking or secondary corking cap with a tearable injury-proof strip, and method for making same

The method comprises a) an extrusion stage wherein a extruded tube made of a thermoplastic material is formed by extrusion with the aid of an extrusion die having a diameter D, a slit width Eand a section S; b) a stage wherein the extruded tube is radially expanded in order to form a radially expanded tube having a diameter D, a thickness Eand corresponding section of area S; c) a truncating stage wherein the expanded tube is broken down into tube portions; d) a stage in which the tube portions are formed in such a way that a heat-shrinkable cap is obtained and in which an axial drawing stage is incorporated, between extrusion stage a) and expansion stage b), at the output of the extrusion die, in order to obtain an axially drawn tube having a diameter Dwhich is typically smaller than Dand D, and a thickness Ewhich is typically lower than E, such that S/Stypically ranges between 2 and 10. The advantages of the invention are as follows: it is possible to obtain caps which are economic, easily heat-shrinkable and which have a stable axial dimension, thereby avoiding any axial distortion, i.e. any axial distortion of the impression.

Growing community of inventors

Teche, France

Andre Luciani