Abstract: 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 D0, a slit width E0 and a section S0; b) a stage wherein the extruded tube is radially expanded in order to form a radially expanded tube having a diameter D2, a thickness E2 and corresponding section of area S1; 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 D1 which is typically smaller than D0 and D2, and a thickness E1 which is typically lower than E0, such that S0/S1 typically ranges between 2 and 10.

Abstract: A method comprising: a) providing sheet or format metal; b) swaging said metal by means of a swaging lubricant, so as to form a swaged blank; c) degreasing said swaged blank, so as to typically remove the remains of the swaging lubricant, to form a degreased blank capable of being lacquer coated; d) lacquer coating said degreased blank, said resulting lacquer coated blank being then optionally decorated; e) an optional finishing step. The method is characterized in that during the degreasing at step c), said swaged blank is subjected to an energetic radiation emission treatment of selected intensity and duration to eliminate or decompose said remains of lubricant, said treatment being wholly carried out at a metal temperature less than 150 degree C., and for a duration typically less than 1 second, so as to obtain, following said treatment, a surface tension not less than 34 dynes/cm.

Abstract: A stopper cap and method for its manufacture, the stopper cap including a shell with a head, a skirt and a seal, in which the seal is a form seal, and the form seal has a resilient layer and a set of adjacent layers. The adjacent layers include a barrier layer, a malleable support layer to provide the adjacent layers a global malleable property such that the seal can be shaped without creation of folds, and an outer layer having an outer surface which can be compressed by the axial compression resulting from stoppering so as to match the form of the mouth of the neck.

Abstract: A bottle opener for a closure cap for a bottle neck, includes a hood equipped with a first hook including a contact surface with a lower surface of the closure cap, and a transmission lever hinged onto the hood and provided with a gripping section and a working section able to come to bear against an upper surface of the closure cap. It is also provided with two other hooks which include a contact surface with the lower surface and which are offset in the circumferential direction on both sides of the position diametrically opposite the first hook, by an angle of less than 90°, typically ranging between 40° and 80°, and preferably ranging between 40° and 50°.

Abstract: An anti-refilling device, designed to be fixed irreversibly to the neck of a container containing a liquid and to be closed by a stopper cap. The device has an axis coinciding with the axis of the neck when it is fixed on the neck, and has an axial dispensing duct for the liquid through which a transverse wall extends, fixed irreversibly to the anti-refilling device and provided with a plurality of traversing channels, each of the channels connecting an external opening, directed towards the outside of the container, to an internal opening, directed towards the inside of the container. The smallest dimension of the external opening is less than a critical dimension determined according to the critical surface tension of the material making up the transverse wall, typically about 0.7 mm, and the smallest dimension of the internal opening is greater than the critical dimension.

Abstract: Composite stopper cap includes: a) a metal cap having a crimp region and a means of easy initial opening, b) a plastics insert joined to a top part of the metal cap, the insert having a sealing head and an internally threaded skirt, and c) at least one first outer component assembled to the metal cap, the first outer component having at least one peripheral hand grip part. The cap is also includes a second outer component assembled to a metal connecting skirt in such a way as to cover and conceal the lower part of the metal cap.

Abstract: A bottle-opener for a closure for a bottle neck includes a hood 30 equipped with a first hook 38 comprising a contact surface with a lower surface of the closure, and a transmission lever hinged 32 on the hood and provided with a grip section 52 and a working portion 54 suitable for coming to bear against an upper surface of the closure.

Abstract: The screw capsule includes two parts, a) an insert with a so-called internal head and an internally-threaded skirt a metallic shell, including an external head and an external skirt, the capsule being typically provided with a sealing element, a tamper-protection element and a member for first opening, characterised in that the external skirt includes at least one piece, typically cylindrical, of height, diameter corresponding to the neck for sealing and at least one radially-expanded section, of height, within a circle of diameter D2>D1, such as to form an annular radial cavity. The above offers the advantage that the expanded section particularly facilitates the manipulation of the capsule (1) and the rotation thereof with relation to the neck for opening/closing the container by unscrewing/screwing up the capsule on the neck.

Abstract: 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 D0, a slit width E0 and a section S0; b) a stage wherein the extruded tube is radially expanded in order to form a radially expanded tube having a diameter D2, a thickness E2 and corresponding section of area S1; 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 D1 which is typically smaller than D0 and D2, and a thickness E1 which is typically lower than E0, such that S0/S1 typically ranges between 2 and 10.

Abstract: A closure, embodied to cooperate with a neck of a container, the neck, having a wide mouth on the upper part thereof, an external thread and a tapering piece on the lateral wall, for sealing the closure which includes a) an external body having an external head and skirt, b) an insert, enclosed within the body and fixed thereto, including an internal head and skirt, provided with an internal thread, for cooperation with the external thread of the neck and c) a sealing joint, forming an inset piece, fixed to the insert. The joint has a central piece and a border piece. The insert includes a radial compression element, for the sealing joint against the neck, such that when the bottle closure is screwed to the neck, the border is compressed radially between the insert and the neck.