FR2699507A1 - Metallic closure cap by rotation, for bottles, method for its crimping, and use thereof. - Google Patents

Abstract

The new metal twist-off cap for bottles has a cap cover (1.1) for receiving the inner seal of the cap, a straight cap tube (1.2), a snap ring safety device (1.3), which guarantees the indication of first opening and at the same time ensures the connection between the upper part and the lower part of the closure cap tube, also after the first opening. The safety force ring is a single or double safety ring, comprising connecting ribs (1.4) and areas intended for breaking (1.5), arranged in a particular way. This twist cap is intended for the first closure of twist lock bottles, with the aim of retaining liquids, with or without overpressure, to indicate the first opening of the closure cap, in accordance with safety requirements, as well than to reclose the bottles, the closure cap being reused as a complete assembly.

Description

The invention relates to a metallic capsule for closing by rotation,

  for bottles, a process for its crimping on a bottle with a threaded neck, as well

than using this capsule.

  The use of metal capsules

  rotation closure for bottles is known.

  Optimization of the economical production of the closure cap, of the simple fitting of the cap, even in the case of bottle necks with relatively wide tolerances, of a reliable indication of first opening, of the reuse of the closure capsule, recycling of the closure capsule and of the bottle, as well as aspects relating to aesthetics, is however obtained, following research by the applicant, only thanks to the metallic capsule for closing by rotation, for bottles,

according to the present invention.

  In accordance with the invention, the metal rotary closure capsule for bottles, intended for closing bottles with a threaded neck, is characterized by a closure capsule cover intended to receive the internal seal of the closure capsule. by rotation, a rectilinear closure capsule tube, and a safety force ring, which guarantees the indication of first opening and at the same time ensures the connection between the upper and the lower part of the closure capsule tube, also

after the first opening.

  The closure cap cover is intended to receive, in a protected manner, as an internal seal, a seal in the form of a circular plate, which has ribs on its side directed towards the orifice of the bottle. sealing, sealing lips or elements

similar.

  The safety force ring is preferably a simple safety ring, which has horizontally extending material recess slots and comprising connecting ribs intended to ensure the connection between the upper part and the lower part of the closure capsule tube, and of the zones intended for rupture extending vertically under the recess slots, substantially centered with respect to these slots and in the immediate vicinity thereof, as well as, as the case may be if necessary, a horizontal reinforcing ring, under the zones intended for rupture, the pull-out energy of the zones intended for rupture being, in a statistically proven manner, less than the energy

  tearing of the connecting ribs.

  However, the safety force ring can also be a double safety ring, which is connected to both the upper part and the lower part of the closure capsule tube, by means of connecting ribs, and which comprises zones intended for rupture in the two safety rings, the pull-out energy of the zones intended for rupture being, in a statistically proven manner, less than the pull-out energy of the connecting ribs. When the upper and lower connecting ribs are arranged one under the other, the zones intended for rupture may extend between the connecting ribs, either straight and substantially centered, or obliquely, or from each side of the ring, only substantially to the middle of the double safety ring. When the upper and lower connecting ribs are arranged offset from each other, the areas intended for rupture may extend between the connecting ribs, either straight, oblique or from each side of the ring, only substantially

  to the middle of the double safety ring.

  The position of the safety ring, with respect to the whole of the closure capsule tube, is preferably such that, after crimping the closure capsule, the safety ring can be

  folded back under the bulge of the bottle ring.

  The connecting ribs are individual ribs or ribs arranged in groups, and the zones intended for rupture are notches or zones of weakening of the material, which extend to near the recess slots, the ribs being arranged at regular angular intervals, their number preferably being between six and sixteen, and more particularly between eight and

ten.

  The closure cap according to the invention is normally made of a metal which can be mechanically deformed at room temperature, more particularly aluminum or aluminum alloys. To crimp the closure cap by rotation, on a bottle having a threaded neck, the following process steps are followed: fitting of the closure cap over the orifice of the bottle, immobilization of the closure cap and of the bottle one with respect to the other, production of the closure groove by rotation, in the closure cap of the bottle, by deformation discharge, in accordance with the external diameter of the ring of the bottle and in accordance with the closure thread by rotation on the bottle ring, and folding of the safety ring under the ring

the bottle.

  The rotary closure cap for bottles according to the invention is therefore used firstly for the first closure of bottles with rotary closure, in order to store liquids up to an overpressure of 4,105 Pa, for indicate the first opening of the closure capsule, in accordance with safety requirements, as well as to close the bottles, the closure capsule

  being reused as a complete set.

  Preferred embodiments of the metal closure cap by rotation, for bottles, according to the invention, as well as its crimping will be described in detail in

  below, with reference to the accompanying drawings.

  The figures of these drawings are diagrammatic representations, in section, of closure caps by rotation, for bottles, with interior view of the safety rings; they show: Fig la a closure capsule according to the invention, comprising only a single safety force ring; Fig lb a closure capsule with two safety force rings, comprising connecting ribs arranged one under the other; Fig lc a closure capsule with two safety force rings, comprising connecting ribs arranged offset from each other; Fig 2 a to 2 c of the connecting ribs according to Figure 1b, comprising zones intended for rupture, straight (2 a), oblique (2 b), and interrupted (2 c); and FIG. 3 a to 3 c of the connecting ribs in accordance with FIG. 1 c, comprising zones intended for rupture, straight (3 a), oblique (3 b), and

interrupted (3 c).

  In FIG. 1a, the assembly of the closure capsule cover is designated by the reference 1 1 It is intended to receive the internal seal of the closure capsule, this seal being able to take

  various shapes and be made of different materials.

  However, the interior seal may above all have sealing ribs, sealing lips, or the like, on the side facing the orifice of the bottle. The materials of the interior seal may

be partly elastic.

  The closure capsule cover 1 1 is crimped into the closure capsule tube 1 2, by being folded down mechanically, before or after the first closure. To increase the grip grip of the closure capsule, the closure capsule cover can be ribbed on its cylindrical part,

parallel to its central axis.

  In the closure capsule tube 1 2 is made the simple safety force ring 1 3 Between the horizontally extending material recess slots are located the connecting ribs 1.4 Under these ribs, and up to their proximity immediate of these, the notches 1 5 are provided by way of zones intended for breaking. If necessary, these can start from a reinforcement ring 1 6

extending horizontally.

  In FIG. 1b, the reference 1 1 also designates the whole of the closure capsule cover. The closure capsule tube 1 2 is interrupted, substantially in the middle, by the double safety force ring 1 3, that is to say is divided into an upper section and a lower section The connecting ribs 1 4 are , as already mentioned, arranged one under the other, and connecting the two sections of capsule tube of

  closure, to safety rings.

  The embodiment according to Figure 1c corresponds to that of Figure 1b, with the exception that the connecting ribs 1 4 of the two safety rings are arranged in an offset manner by one

compared to others.

  In FIGS. 2 a to 2 c inclusive, there are shown closure caps by rotation, for bottles, according to the invention, comprising connecting ribs arranged one under the other, in accordance with FIG. 1 b, but comprising zones intended for rupture 1 5 arranged differently (not shown in FIGS. 1b and 1c) In 2 a, the zones intended for rupture extend in a centered manner between the ribs, through the safety rings, in 2 b so oblique and between the ribs, and in 2 c straight, from each side of the ring, only substantially to the middle of the rings and in

  being offset from each other.

  In FIGS. 3 a to 3 c inclusive, there are shown closure caps by rotation, for bottles, in accordance with the invention, comprising connecting ribs arranged in an offset relation to each other, in accordance with FIG. 1c, and comprising zones intended for rupture 1 5 arranged differently (not shown in FIGS. 1b and 1c) In 3 a, the zones intended for rupture extend in a centered manner between the ribs, through safety rings, in 3 b obliquely and between the ribs, and 3 c straight, from each side of the ring, only substantially to the middle of the rings and being

  offset from each other.

  When the closure cap is put in place, at the same time or also after the groove has been produced by deformation delivery, the safety ring is pushed back under the shoulder or the groove, located under the ring of the bottle , in order to guarantee a sufficient antagonistic force against the opening of the closure capsule, without tearing off all the zones intended for rupture. As already mentioned, the safety ring 1 3 is connected to the sections of closure capsule tube, by means of the ribs 1 4 The number of ribs is between six and sixteen, and preferably between eight and ten ribs The ribs can be formed by massive individual bridges of

  material, or by individual bridging groups.

  The safety ring has zones intended for rupture 1 5 These can be formed by interruptions of material or weakening of the material In all cases, the energy that must statistically be used to tear off all the zones of rupture, must surely be less than the energy necessary to tear off all the ribs It is obvious that this energy must be able to be supplied by hand, by an adult person. The material recesses between the ribs, and, where appropriate, also the zones intended for rupture, may be formed by cutouts or

  usual perforations, or by notches.

  With regard to the first opening, it can be seen that due to the forces acting primarily horizontally, it is first of all the notches embedded by the crimping, which open widely, and even, if necessary, the short ones. sections between the vertical sections intended for breaking and the horizontal material recess slots, which are torn off, as a result of which, the transmission of forces acting first horizontally, towards the lower section of the closure capsule, decreases, and the forces acting first vertically can act on the part of the upper section of the closure capsule which is still folded under the ring of the container, to also flare this part, thus allowing the assembly of the closure capsule to be removed. The open notches, and possibly the sections torn off between the sections intended for rupture and the material recess slots, then indicate in a sufficiently clear manner, the first opening; the capsule can be reused, or recycled, as a complete set Similarly, after removing the closure capsule, the container is ready for

  recycling, without foreign materials.

Claims (8)

CLAIMS.   1 metal closure cap by rotation, for bottles, characterized by a closure cap cover (1 1) intended to receive the inner seal of the closure cap by rotation, a closure capsule tube (1 2) rectilinear, and a safety force ring (1 3), which guarantees the indication of first opening, and at the same time ensures the connection between the upper part and the lower part of the closure capsule tube, also after the first opening.   2 closure cap by rotation, for bottles, according to claim 1, characterized in that the closure cap cover (1 1) is intended to receive in a protected manner, a seal in the form of a circular plate, which can present on its side directed towards the orifice of the bottle, sealing ribs, lips   sealing or similar elements.   3 closure cap by rotation, for bottles, according to claim 1 or 2, characterized in that the safety force ring is a simple safety ring (1 3), which has slots for recessing material s' extending horizontally and comprising connecting ribs (1 4) intended to ensure the connection between the upper part and the lower part of the closure capsule tube, and zones intended for rupture (1 5) extending vertically under the slots recess, substantially centrally with respect to these slots and up to their immediate proximity, as well as, where appropriate, a horizontal reinforcement ring (1 6), under the zones intended for rupture, the pull-out energy of the zones intended for rupture being, in a statistically proven manner, lower than the pull-out energy of the connecting ribs. 4 closure cap by rotation, for bottles, according to claim 1 or 2, characterized in that the safety force ring is a double safety ring (1 3), which is connected to both the upper part and at the lower part of the closure capsule tube, by means of connecting ribs (1 4), and which has zones intended for rupture in the two safety rings, the energy of tearing of the zones intended for the failure being, statistically proven, less than the energy   tearing of the connecting ribs.   Rotary closure cap, for bottles, according to claim 4, characterized in that the upper and lower connecting ribs are arranged one under the other (figure lb), and in that the zones intended for rupture (1 5 ) extend between the connecting ribs, either straight and substantially centered (Figure 2 a), or obliquely (Figure 2 b), or from each side of the ring, only substantially to the middle   of the double safety ring (figure 2 c).   6 closure cap by rotation, for bottles, according to claim 4, characterized in that the upper and lower connecting ribs are arranged offset from each other (Figure lc), and in that the areas for the rupture (1 5) extend between the connecting ribs, straight (Figure 3 a), obliquely (Figure 3 b), or from each side of the ring, only substantially to the middle of   the double safety ring (figure 3 c).   7 closure cap by rotation, for   bottles, according to one of claims 3 to 6,   characterized in that the position of the safety ring is such that, after crimping the closure cap, the safety ring is folded under the   bulging of the bottle ring.   8 closure cap by rotation, for   bottles, according to one of claims 1 to 7,   characterized in that the connecting ribs are individual ribs or ribs arranged in groups, and in that the zones intended for rupture are notches or zones of weakening of the material, which extend as close as possible to the recess slots, the ribs being arranged at regular angular intervals, their number preferably being between six and sixteen, and more   especially between eight and ten.   9 Rotation closure cap, for   bottles, according to one of claims 1 to 8,   characterized in that it is made of a metal which can be mechanically deformed at room temperature, more particularly of aluminum or of aluminum alloys.   Method for crimping the closure cap by rotation, for bottles, according to claim 1, on a bottle comprising a threaded neck, characterized by the following process steps: fitting the closure cap over the orifice of the bottle, immobilization of the closure cap and the bottle with respect to each other, making the closure groove by rotation, in the closure cap of the bottle, by deformation discharge, in accordance with the outside diameter of the ring of the bottle and in accordance with the closing thread by rotation on the ring of the bottle, and folding of the safety ring under the ring the bottle.   11 Use of the closure cap by rotation, for bottles, according to claim 1, and the closure cap rotated crimped on the bottle, according to claim 10, for the first closure of bottles with closure by rotation, for the purpose to store liquids up to an overpressure of 4 105 Pa, to indicate the first opening of the closure capsule, in accordance with safety requirements, as well as to close the bottles, the closure capsule   being reused as a complete set.