FR2739360A1 - Anti-fraud sealing cap - Google Patents

Abstract

The anti-fraud sealing cap (1) for a container (2) with a neck (3) comprises three elements. Firstly a plug (4) comprising a head (40) and a cylindrical skirt (41). Secondly a means of axially spacing (8) the head which avoids pushing the plug into the neck before first opening and is removable during the first opening. Thirdly a rigid collar (5) comprising an upper rim (50), a cylindrical portion (51) coaxial with the skirt and fixed to the neck. A lid (7) seals the collar internal cylindrical portion, its sealing being destroyed during first opening, when it is detached by tearing after raising the axial separator and breaking open the plug. The internal cylindrical portion is blocked by a rigid piece (52) fixed to the collar having an axial orifice. The cylindrical skirt comprises a shank (410) such that during first opening the shank lower end is detached or torn from the lid. The cap design reduces the possibility of fraud by recycling of the empty packaging by furnishing a clear indicator of first opening of the cap.

Description

ANTI-FRAUD CAPPING CAPSULE
FIELD OF THE INVENTION
The invention relates to the field of stopper capsules and more particularly that of anti-fraud stopper capsules for the packaging of high value or renowned products, typically in the field of alcohols, wines for keeping, liquors, spirits.

STATE OF THE ART
Are already known, in particular from the British patents Nos. 2,057,390 A and 2,236,999 A, capsules ensuring a non-refillable function
These capsules have a non-return valve preventing the filling of the container provided with such a capsule, with a liquid imitating the original content in order to deceive the end consumer.

PROBLEM
However, capsules such as those described in the British patents cited above do not constitute sufficient protection against fraud.

Indeed, there is a fairly widespread fraud which consists in recovering and recycling empty packaging, typically specific bottles of well-known brand, filling them with content unrelated to said brand, and crimping them using capsules, generally imitation.

The problem is first to find ways to reduce the possibility of fraud by recycling empty packaging.

It is then to provide a clear indicator of first opening, so that in case of recycling of empty packaging, the packaging bears the mark of fraud, or to prevent the reuse of empty packaging.

DESCRIPTION OF THE INVENTION
A first object of the invention consists of an anti-fraud closure cap (1) of a container (2) with a neck (3) comprising the following elements a) a head cap (4) comprising a head (40 ) and a cylindrical skirt (41), b) means for axial separation (8) of said head (40), intended to prevent a total depression of said plug in said neck before a first opening, removable during said first opening, c) a rigid ring (5) comprising an upper rim (50), a cylindrical portion (51) coaxial with said skirt (41) which can be joined to said neck by fixing means, d) a sealed closure means from the inside of said cylindrical portion (51), its sealing being destroyed during said first opening, after removal of said axial spacing means (8) and total insertion of said plug (4) during said first opening.

These means of the invention solve the problem posed. Indeed, during said first opening, the final consumer must perform two gestures: - on the one hand, he must remove said axial spacing means (8) from said head (40). Then, by removing the plug (4), it is possible to check the tightness of the capsule and the integrity of the content of the container (2), - on the other hand, after having removed said spacing means, and having possibly checking the inviolability of the container, the consumer, by filling the neck completely with the cap irreversibly destroys the tightness of said sealed closure means.

DESCRIPTION OF THE FIGURES
All the figures relate to the invention.

Figure la is an axial sectional view of a capsule (1) according to a method of the invention, before the first opening on the right half of the figure, after the first opening on the left half of the figure. I1 is the same for Figures lc.

The capsule (1) comprises a head cap (4) formed by a head (40) and a cylindrical skirt (41), and a rigid ring (5), made integral with said neck (3), during the capping. , by an adhesive layer (10) isolated from the content of said container by an annular seal (11) insulating said adhesive layer (10) from the content of container (2). To this rigid ring (5) is fixed a rigid part (52), but the rigid part (52) can be part of the rigid ring (5) itself. Said skirt (41) is extended by 4 rods (410) of cross section and shape chosen to pass through these 4 orifices (520).

FIG. 1b shows a cross-sectional view of said rigid part, where 3 orifices (520) in the form of angular sectors at 90 "have been represented with, inside, the 3 sections of rods (410 ).

Before the first opening, the axial spacing means (8) keeps the end (411) of the rods (410) above the cover (7) which closes the end of the rigid ring (5). After removal of the axial spacing means (8) during the first opening, the plug must be fully inserted to cause the irreversible opening of the cover (7) - see left part of Figure la.

Figure 1c is analogous to Figure 1a. It differs in that the cover (7) is fixed to the lower surface of said rigid part (52) so as to close off the 4 orifices (520).

Figure ld is a top view of the cover (7) used in Figure lc. I1 includes 4 weakening lines (73), which without reducing the sealing of the cover, facilitate and guide the tearing of 4 sectors of the cover (7) during the first opening.

FIG. 2a represents, in axial section, a capsule (1) before encapsulation on the left part of the figure, and after encapsulation (but before first opening) on the right part of the figure.

This capsule comprises a rigid part (54), axially mobile thanks to the cooperation of an annular groove (56) formed on the interior surface of said rigid ring (5), and of the upper edge (550) of said mobile rigid part ( 54). The height of the groove is at least equal to the height of said axial spacing means (8), so that, during the first opening, the lower end (541) of said rigid part (54) comes to open said cover (7).

Figure 2a illustrates in particular another method of fixing said rigid ring (5) to said neck (3), different from that shown in Figure la. In this mode, said rigid ring has non-return notches (53) which will cooperate with non-return hollows (62) of a flexible ring (6) with flange (60). Before capping, the rigid ring (5) is not completely fitted into said flexible ring (6), so that the capsule can pass through the neck (3), as shown on the left side of FIG. 2a. The capping comprises a first step where the flexible ring (6) is supported on the inner rim (16) of the neck, then a second step where the plug (4) and the rigid ring (5) are pushed to the bottom, this which has the effect of radially spreading the lower part of the flexible ring (6), of pressing an open ring (64), generally metallic, against the inner wall of the neck, and thus of locking said rigid ring (5) to said neck (3), as shown on the right side of Figure 2a. The flexible ring (6) also has external non-return notches (63).

This locking mode can also be applied to the other methods of the invention illustrated in FIGS. 1a, 1c, replacing an attachment by adhesive (10).

FIG. 2a also illustrates the possibility of using necks (3) with stepped flanges, the external part (160) being higher than the internal part (16), so as to protect the edge edge (50,60) from rigid (5) and flexible (6) rings against fraudulent attempts to disassemble said capsule.

FIG. 2a finally illustrates the possibility of using a cap head (40) with a circular groove (401) cooperating with a circular rod (502) of said rigid ring (5), to facilitate sealing and alignment of the cap. (4).

Figures 2b and 2c, comparable to Figure la by the presence of a fixed rigid part (52), show a method of axial locking of said rigid ring (5) similar to that shown in Figure 2a, with however a variant with regard to the open ring (64). Instead of using an open metal ring (64) on the outer surface of said flexible ring (6), as in FIG. 2a, the end of said flexible ring (6) comprises an open metal ring (65) on the inner surface of said flexible ring (6), ring which, after axial fitting of the rigid ring (5) in the flexible ring (6), cooperates with an axial locking groove (503) on the external surface of said rigid ring, so as to radially separate said ring (65) and simultaneously prevent any axial withdrawal of said rigid ring (5), in particular by virtue of the right angle section of said ring (65) and said groove (503).

Figure 2d is a partial view in axial section illustrating a modification of Figure 2a: the cover (7), instead of being fixed to the end of the rigid ring (5) as in Figure 2a, is fixed under said movable part (54), this cover (7) being torn thanks to a cutting part (542) having a frustoconical part (5420), part fixed to said rigid ring (5) thanks to a thread (501). In this configuration, the cover (7), after said first opening, is retained between the movable part (54) and the cutting part (542).

Figures 3a and 3b on the one hand, 3c and 3d on the other hand, are similar to Figures 2b and 2c. In FIGS. 3a and 3b, the movable rigid part (55) is closed at its lower part, and has at least one lower orifice (554) located at the lower part of said skirt (551), so that this orifice is closed when said movable rigid part (55) is in the "high" position - see FIG. 3a - and when it is open when said part (55) is in the "low" position - see FIG. 3b following said first opening. from the "high" position to the "low" position is made irreversible thanks to the elasticity or the stressing of the upper part (5510) of the skirt (551) formed by tongues whose upper end (5511) has an acute angle profile intended to cooperate with the profile of the groove (562) of the rigid ring (5) during the first opening, so that this moving part (55) is blocked and cannot be removed from the neck (3) by pulling upwards on said piece (55).

The profile of this groove (562), which is substantially triangular, is therefore such that it constitutes a non-return hollow to prevent the upward withdrawal of the rigid part (55), the end (5511) of which forms an anti-notch return.

The lower part (5512) of said skirt (551) of the part (55) is rigid and of diameter less than the inside diameter of said rigid ring (5).

Figures 3c and 3d are similar to Figures 3a and 3b, but instead of having a movable part (55) closed at its lower part, the part (55) forms a socket with crenellated and sharp edges (555), provided with 'upper holes (553), and lower holes (554) positioned on the side skirt (551). Said moving part (55) can slide in a groove (560) open at its lower end. The inner surface of said rigid ring is provided with annular non-return recesses (562) cooperating with non-return notches (5511) arranged on the skirt (551) of said movable part (55), the notches being non-annular so as to allow the assembly of the capsule thanks to the relative flexibility of the open lower part of said movable part (55). A cover (7) is sealed on the end of said rigid ring (5) - see figure 3c before first opening. After the first opening - see figure 3d - the cover (7) is perforated by the crenellated circular end ( 555) of the part (55), and the contents of the container can therefore flow through the perforation of the cover or also through the lower orifices (554) which are then in the "open" position.

FIGS. 4a and 4b are partial views in axial section according to a method of the invention in which said capsule (1) allows a visualization of the first opening, at the level of the neck. According to this method, the capsule does not include an axial spacing means (8). The end (411) of the skirt (41) of the plug (4) comprises a hooking means (412) cooperating with a hooking means (741) of the cover (74) with flexible tongue with spring effect ( 740), so that, as shown in FIG. 5b, after the first opening, said cover (74) is irreversibly positioned ("open" position) approximately 90 "from its initial position (" closed "position), which makes its external face (742) visible through said neck (3) and capable of carrying an inscription readable by the end consumer.

FIGS. 5a and 5b, similar to FIGS. 4a and 4b, illustrate another modality of capsule with display of said first opening, which differs from that illustrated in FIGS. 5a and 5b in that it comprises axial spacing means ( 8) of the head (40). According to this method, the tab cover (74) is, before said first opening, maintained in the "closed" position by the cooperation of "male" hooking means (741) connected by a weakening line (73) to said tongue seal (74), with a hooking groove (561) on the inner surface of said rigid ring (5).

DETAILED DESCRIPTION OF THE INVENTION
According to a first embodiment of the invention, said sealing means is a cover (7), sealingly closing the interior of said cylindrical portion (51), a cover which is irreversibly detached at least in part or torn during said insertion. total. Figures la to ld, 2a to 2d correspond to this modality.

The cover (7) can be detached or torn using different means. Thus, during said total insertion, the end (410) of said skirt (41) can at least partially detach or tear said cover (7), as shown in Figures la to ld, 2b and 2c
To protect said cover from any possibility of fraudulent restoration - or any replacement - after said first opening, it is desirable, as shown in FIGS. 1a, 1c, 2b and 2c, that the interior of said cylindrical portion (51) be obstructed by a rigid part (52) fixed to said rigid ring (5), perforated so as to present at least one axial orifice (520), and in which said cylindrical skirt (41) comprises at least one rod (410) of suitable section, and lower, than that of said orifice (520), so that, during said first opening, the lower end (411) of said rod (410) comes to loosen at least in part or tear said cover (7).

The interior of said cylindrical portion (51) can also, as shown in FIG. 2a, be obstructed by a rigid piece (54), integral with said rigid ring (5) but movable in the axial direction, thanks to a groove ( 56), with an axial stroke at least equal to said axial spacing means (8), possibly perforated by at least one conduit (540), so that, during said first opening, the lower end of said skirt (41) moves said rigid part (54), and so that the displacement of its lower end (541) comes to irreversibly loosen at least in part or tear said seal (7).

In this case, during the first opening, the end of the skirt (41) of the plug (4) presses on the upper surface of said rigid part (54) to move said part (54) axially downwards, which will cause the opening or irreversible tearing of said cover (7).

According to the invention, the covers can be of different types. Said cover (7) can be a cover (71) adhesive to said rigid ring, as in FIGS. 1a, 2a, 2b, or to said rigid part (52) as in FIG. 1c.

This cover may be made of plastic, metallic or metalloplastic material, the material being chosen both for its harmlessness, its inertness with respect to the content of said container.

Its mechanical properties and its thickness are such that its deformation is irreversible under low mechanical stress corresponding to that of the depression of the plug (4) by an average consumer, ie typically 10 to 30 daN.

The cover (7) can also be a bi-stable cover with two open / closed positions, similar to those found for the closure of certain containers containing cleaning products, which open / close by rotation of a closing valve around a hinge offering a certain resistance between the "open" position and the "closed" position, so that these two positions are stable. However, in the case of the invention, once in the "open" position, the presence of a rigid part (52, 54) prevents the valve from being able to be tilted to the "closed" position during an attempt at fraudulent reuse. of the container.

As it is not desirable according to the invention for said cover to detach from said capsule, said cover (7) is a cover which, preferably, remains linked to said rigid ring (5) or to said rigid part (52) , by bridges, a flexible tab, or a hinge.

A second embodiment of the invention relates to a capsule in which a) the interior of said cylindrical portion (51) is obstructed by a rigid piece (55) integral with said rigid ring (5) but movable in the axial direction thanks to its upper edge (550) adapted to said groove (56) of said rigid ring (5) of height at least equal to said axial spacing, having at its lower part a skirt (551) and a lower orifice (554) intended to ensure communication between the interior of said container (2) and the exterior, b) means for closing said orifice which can slide on said skirt (551), said closing means closing said orifice (554) when said rigid part (55) is in "high" position before said first opening, said closing means releasing said orifice (554) during said first opening after said total insertion.

According to a practical embodiment illustrated in Figures 3a and 3b, the skirt (551) of said movable rigid part (55) forms a socket with a vertical conduit closed at its lower part and having a lower orifice (554) at the end bottom of said skirt (551), and in which said rigid ring acts as a closure means, the lower orifice (554) being closed by the rigid ring (5) when said movable part (55) is in the "high" position , and being free when said movable part has irreversibly slid into the "low" position during said first opening.

In this method of the invention illustrated in FIGS. 3a and 3b, there is no longer a cover, but only a movable part (55) which ensures either the sealing or the communication of the interior and of the outside of said container (2), depending on whether said piece (55) is in the "high" or "low" position, by cooperation of said piece (55) with said rigid ring (5). In FIGS. 3a and 3b, the simple axial displacement downwards of the part (55) releases the orifice (554), but various practical variants based on this principle are possible according to the invention.

 It is also possible according to the invention to combine the above means and the use of a cover. In this case, instead of having a skirt (551) forming a vertical conduit closed at its lower part, as in FIGS. 3a and 3b, said skirt forms by an open vertical conduit, a cover (7) being fixed on the end of said rigid ring (5), as shown in Figures 3c and 3d.

A second object of the invention consists of an anti-fraud closure cap (1) of a container (2) with a neck (3) comprising the following elements a) a head cap (4) comprising a head (40 ) and a cylindrical skirt (41), b) a rigid ring (5) comprising an upper flange (50), a cylindrical portion (51) coaxial with said skirt (41) which can be joined to said neck by fixing means, c) a first opening display means, irreversibly triggered during said first opening, either by pulling on said plug, or, in the case of a capsule comprising an axial spacing means (8), by fully inserting said plug (4) .

According to this object of the invention, sealing is no longer sought during the first opening, and after removal of the plug (4), as a sign of inviolability, but an irreversible visualization of a first opening is sought.

Said display means can be a lid with a foldable tongue (74), one end of the tongue (740) of which is fixed to said rigid ring (6) or said flexible ring (6), the foldability and flexibility of the tongue (740 ) allowing said cover (74) to change orientation and to approach the interior surface of said neck (3), so as to become visible during said first opening.

According to a first practical embodiment illustrated in FIGS. 4a and 4b, said cover (74) and the end (411) of said skirt (41) are provided with hooking means (412, 741) cooperating with each other, so maintaining said cover (74) in the "closed" position before said first opening, and tilting it into the "open" position by pulling on said plug (4).

According to a second practical embodiment illustrated in FIGS. 5a and 5b, said cover (74) and said rigid ring (5) cooperate by means of attachment means (561,741) so as to maintain said cover (74) in the "closed" position. "before said first opening, and to switch it to the" open "position by driving in said plug (4), after breaking a line of weakness (73).

 I1 is also possible according to 1 invention that said cover (74) for viewing the first opening is also a seal ensuring sealing.

According to the invention, it is important that said rigid ring (5) is fixed to said neck (3) so that it is not possible to separate said ring (5) and said neck (3) without destroying said neck ( 3). This rigid ring is made of material with high mechanical characteristics, as was indicated in French application No. 9510997 in the name of the applicant and which relates to other anti-fraud capsules.

Preferably, this rigid ring (5) is made of stainless steel.

This rigid ring (5) can be fixed to said neck (3) by an adhesive layer (10), as shown in Figures la and lc.

However, preferably, and as shown in FIGS. 2a, 2b, 2c, 3a to 3d, said rigid ring (5) is fixed to said neck (3) by means of a flexible ring (6) in which the rigid ring (5) comes fitting, which causes a radial spacing of the lower end of the flexible ring (6), its plating against the inner surface of said neck and the axial locking of said rigid ring (5), in particular thanks to the use of 'open rings (64,65).

The open rings (64,65) both act as a spring to facilitate the introduction of the capsule into the neck and to allow the expansion of the lower part of the flexible ring (6), a role of extra thickness for ensuring the plating of the flexible ring (6) against the interior surface of the neck (3), which ensures the axial locking of the rigid ring (5), and a role of weakening of the neck (3) in the event of a fraudulent attempt to disassembly of the rigid ring (5), any force exerted on the rings (5,6) causing, especially when the metal ring (64) is in direct contact with the neck (3), the destruction of the neck.

The capsules according to the invention are most often associated with sub-coating capsules (12). These capsules usually have a cap strip. In the context of the present invention, the latter is preferably placed at the level of said axial spacing means (8), so that the removal of this strip reveals said spacing means (8), which is itself equipped with a primer inviting the consumer to shoot it to continue unclogging the container.

EXAMPLES OF REALIZATION
Capsules corresponding to different methods of the invention were made.

In all cases * these capsules were intended to stop bottles of cognac, having an inside diameter of neck (3) of 18 mm (reference L2 in FIG. 1a, reference G in FIG. 2a).

* said rigid ring (5) was chosen from stainless steel and was obtained by machining.

* said plug was manufactured by injection of plastic material (HDPE or PP or PET).

Whenever an axial spacing means (8) was used, it was in the form of a tearable tongue, connected by bridges to the head (40) of the plug (4) and made of the same material.

EXAMPLE 1
Capsules corresponding to FIGS. 1a and 1b were made.

Said ring (5) and said rigid part (52) were obtained by machining so as to constitute a single part. A seal (11) compatible with alcohols was used to avoid any contact between alcohols and said adhesive layer (10).

As a seal (7), an aluminum seal 20 μm thick was chosen, covered, according to the tests, with a varnish or a protective thermoplastic film chosen for their inertness with respect to alcohols.

Dimensions of the capsule (see figure la) L1 = outside diameter of the cap (4) and the neck (3) = 30 mm
L2 - minimum inside diameter of the neck (3) and outside diameter of the skirt (51) of the rigid ring = 18 mm
L3 = inside diameter of the skirt (51) of the rigid ring and outside diameter of the skirt (41) of said plug = 14 mm H1 = height of the head of the plug = 8.5 mm
H2 = rigid ring height (5) = 31.5 mm
H3 = thickness of the rigid ring (5) on the rim (160) = 3 mm
H4 = height between drink and glass ring = 6 mm
H5 = distance between rigid part (52) and end of rigid ring - 15 mm
H6 s thickness of the rigid part (52) = 4 mm
H7 = height of the axial spacer (8)) = 6.5 mm
H8 = total height of the capsule = 40 mm
H9 = height of the stems (410) of the cap = 23 mm
EXAMPLE 2
Capsules were made according to Figures 1c and 1d. The materials and dimensions of the capsule are substantially the same as those of Example 1: only changes, the height H9 of the rods (410) is 6.5 mm instead of 23 mm, and the cover (7) is fixed under said rigid part (52) instead of being fixed at the end of said rigid ring (5).

EXAMPLE 3
Capsules were made according to Figure 2a. The materials are the same as those of the previous examples. In addition, said flexible ring (6) is made of HDPE and was manufactured by injection.

The dimensions of this capsule use marks (capital letters) in Figure 2a, their meaning and their numerical value being as follows - A = outside diameter of the cylindrical skirt (41) of the plug (1) or inside diameter of the rigid ring (5) = 9 mm - B - diameter of the upper edge (550) of the rigid part (54) = 12 mm - C = diameter of the cover (7) = 15 mm - D - inside diameter of the groove (56) = 12.5 mm - E = outside diameter of the rigid ring (5) or inside diameter of the flexible ring (6) at its upper edge (60) = 16 mm - F = outside diameter of the skirt (551) of the rigid part (54) = 8.5 mm - G = minimum inside diameter of the neck (3) 18 mm - H = outside diameter of the flanges (50.60) = 22 mm - I = outside diameter of the head (40) of the plug (4), substantially equal to the outside diameter of the neck (3) = 30 mm - J = outside diameter of the cylindrical portion (61) of the flexible ring (6) = 18 mm - K = inside diameter of the neck (lower part) = 20.5 mm - L g outside diameter of the ring (64) after fitting the rigid ring (5) = 20.5 mm - M = outside diameter of the ring (64) before fitting the rigid ring (5) = 17 mm - N = height between lip (16/160) and ring (64) after capping = 32 mm - O = height of the rigid ring (5) , between lip (15/160) and lower end of the rigid ring (5), after capping = 40 mm - P = diameter of the ring (64) (section) = 2 mm - Q = head height (40) of the plug (4) = 8.5 mm - R = height of the spacer (first opening tab) (8) = 6.5 mm - S = thickness of the upper edge (50) of the rigid ring (5) = 5 mm - T = thickness of the upper rim (60) of the flexible ring (6) = 5 mm - U = internal diameter of the outer circular part of the rim (160) = 23 mm - V - axial distance between the upper rims (50) and (60) corresponding to the capsule before caps ulage = 10 mm.

- W = internal diameter of the duct (540) of the rigid part (54) = 5.5 mm - X w height of the rigid part (54) - 15 mm - Y - height of the groove (56) = 10 mm I1 is important to note that, in reality, and contrary to the representation of the figures, the ring (64) presses against the inside wall of the neck, so that, as a result of the intimate contact between metal of the ring (64) and glass of the neck (3), any attempt to remove the rigid ring (5) results in the destruction of the neck (3).

Other elements of description - the rigid ring (5) includes non-return annular notches (53) and has, at its lower part, an adapted external profile intended to cooperate with the internal profile of the lower part of the flexible ring (6) , - the flexible ring (6) comprises, on its internal surface, annular non-return recesses (62), which join the different parts of the capsule before capping, and help to prevent the axial withdrawal of said rigid ring (5) after capping.

The flexible ring (6) also includes non-return annular notches (63) on its external surface. These annular notches and recesses ensure, in addition to the axial locking of the rigid and flexible rings, sealing against the liquid contained in said container (2).

- the metal ring (64) enclosing said lower part (64) is an open ring, with spring effect, so as to have an outside diameter M before capping, less than the inside diameter G at the inlet of the neck, and to have , after capping, an outside diameter L close to the inside diameter K of the lower part of the neck.

EXAMPLE 4
Capsules were made according to Figures 2b and 2c. The dimensions and the materials are similar to those of Example 3. The rigid part (52) is at a distance H5 from the top of the rigid ring (5) equal to 25 mm, the rods (410) having a height H9 of 20 mm.

EXAMPLE 5
Capsules were made according to Figures 3a and 3b. The dimensions and the materials are similar to those of Example 3.

The differences with example 3 are as follows: * the rigid part (54) is replaced by a rigid part (55) consisting of an upper part with flexible strips (5510), each end of the strip forming a non-return notch (5511 ) intended to cooperate, after the first opening, with a non-return hollow (562) of the rigid ring (5). The height X1 of the rigid part (54) is 22.5 mm and the height X2 of the flexible strips or tongues (5510) is 10 mm. When the capsule is assembled, the rigid part (55) is forced into the rigid ring (5), thanks to the flexibility of the tongues (5510).

* the rigid ring (5) does not include a groove (56) but only an annular non-return hollow (562).

* the outer open ring (64) has been replaced by an inner open ring (65).

EXAMPLE 6
Capsules were made according to Figures 4a and 4b.

In this example, the dimensions of the rigid ring (5) and the method of attachment are those of Example 3 and of Figure 2a.

In this example, the skirt (41) of the plug (4) is lengthened by the length X = 15 mm corresponding to said rigid part (54) eliminated in Example 6.

The end (411) of the skirt (41) comprises a female part (412) intended to cooperate with a cover (74) with flexible tongue (740) having a male part (741). This cover is made of LDPE and the tongue is made of spring steel.

The thickness and width of the tongue (740) have been chosen so as to have a restoring force of the order of 0.5 daN, much less than the force which must be exerted to separate the male parts (741 ) and female (412).

ADVANTAGES OF THE INVENTION
The invention has made it possible to develop a range of anti-fraud closure capsules, all products which are based first of all on a concept of inviolability based on a combination of means: the use of a rigid ring (5) and of means for fixing it to the neck on the one hand, and on the other hand means for clearly indicating a first opening.

As regards the means for fixing the rigid ring (5) to the neck, they are preferably based on the association of two rings, a rigid (5) and a flexible (6), a concept all the more interesting since its implementation during capping can generally require only a simple axial displacement.

As regards the means for indicating a first opening, they consist of sealing and / or visualization means, with loss of sealing and change of visualization during an authentic first opening, these sealing or display being irreversibly changed during the first opening.

The invention therefore has the double advantage, on the one hand of providing a solution to the problem posed, that is to say preventing the fraudulent recycling and reuse of empty containers, and on the other hand of providing a wide variety of capsules by using the central concept of the invention in various ways. Indeed, it is most often essential to provide each customer of a major brand product with a capsule specific to their brand.

The invention can also be applied to fields other than that of wines, liqueurs, alcohols and spirits. It can also be applied to the field of perfumes or other luxury products subject to an adaptation, in particular of dimensions, to these luxury products.

Claims (17)

1 - Anti-fraud closure cap (1) of a container (2) with a neck (3) comprising the following elements a) a head cap (4) comprising a head (40) and a cylindrical skirt (41), b) a means of axial spacing (8) of said head (40), intended to avoid a total depression of said plug in said neck before a first opening, removable during said first opening, c) a rigid ring (5) comprising an upper edge (50), a cylindrical portion (51) coaxial with said skirt (41) which can be joined to said neck by fixing means, d) a sealing means for sealing the interior of said cylindrical portion (51), its sealing being destroyed during said first opening, after removal of said axial spacing means (8) and total insertion of said plug (4). 2 - Capsule according to claim 1 wherein said sealing means is a cover (7), sealingly closing the interior of said cylindrical portion, cover which is irreversibly detached at least in part or torn during said total depression. 3 - Capsule according to claim 2 wherein, during said total insertion, the end of said skirt (41) loosens at least in part or tears said seal (7). 4 - Capsule according to claim 3 wherein the interior of said cylindrical portion is obstructed by a rigid piece (52) fixed to said rigid ring (5), perforated so as to have at least one axial orifice (520), and in which said cylindrical skirt (41) comprises at least one rod (410) of adapted section, and smaller than that of said orifice (520), so that, during said first opening, the lower end (411) of said rod (410) comes to detach at least in part or tear said seal (7). 5 - Capsule according to any one of claims 1 to 3 wherein the interior of said cylindrical portion is obstructed by a rigid piece (54), integral with said rigid ring (5) but movable in the axial direction, thanks to a groove ( 56), with an axial stroke at least equal to said axial spacing, possibly perforated by at least one conduit (540), so that, during said first opening, the lower end of said skirt (41) displaces said part rigid (54), and that the displacement of its lower end (541) comes irreversibly to detach at least in part or tear said cover (7). 6 - Capsule according to any one of claims 1 to 5 said cover (7) is a cover (71) adhesive to said rigid ring. 7 - Capsule according to any one of claims 1 to 5 wherein said cover (7) is a bi-stable cover (72) with two open / closed positions. 8 - Capsule according to any one of claims 1 to 5 wherein said cover (7) is a cover which remains connected to said rigid ring (5), by bridges, a flexible tongue, or a hinge. 9 - A capsule according to claim 1 wherein in a) the interior of said cylindrical portion (51) is obstructed by a rigid piece (55) integral with said rigid ring (5) but movable in the axial direction thanks to its edge upper (550) adapted to said groove (56) of said rigid ring (5) of height at least equal to said axial spacing, having at its lower part a skirt (551) and a lower orifice (554) intended to ensure communication between the interior of said container (2) and the exterior, b) means for closing said orifice which can slide on said skirt (551), said closing means closing said orifice (554) when said rigid part (55) is in position "high" before said first opening, said closing means releasing said orifice (554) during said first opening after said total depression. 10 - A capsule according to claim 9 wherein the skirt (551) of said movable rigid part (55) forms a socket with a vertical conduit closed at its lower part and having a lower orifice (554) at the lower end of said skirt (551), and in which said rigid ring acts as a closing part (555), the lower orifice (554) being closed by the rigid ring (5) when said movable part (55) is in the "high" position, and being free when said movable part has irreversibly slid into the "low" position during said first opening. 11 - Capsule according to claim 10 wherein said vertical duct closed at its lower part is formed by an open vertical duct and a cover (7) fixed on the end of said rigid ring (5). 12 - Anti-fraud closure cap (1) of a container (2) with neck (3) comprising the following elements a) a head cap (4) comprising a head (40) and a cylindrical skirt (41), b) a rigid ring (5) comprising an upper rim (50), a cylindrical portion (51) coaxial with said skirt (41) which can be joined to said neck by fixing means, c) a means of viewing the first opening, irreversibly triggerable during said first opening, either by pulling on said plug, or, in the case of a capsule comprising an axial spacing means (8), by fully inserting said plug (4). 13 - Capsule according to claim 12 wherein said display means is a foldable tongue seal (74) whose tongue (740) is fixed to said rigid ring (6) or said flexible ring (6), the foldability and flexibility of the tongue allowing said cover (74) to change orientation and to approach the interior surface of said neck (3), so as to become visible. 14 - Capsule according to claim 13 wherein said cover (74) and the end (411) of said skirt (41) are provided with hooking means (412, 741) cooperating with each other, so as to maintain said cover ( 74) in the "closed" position before said first opening, and to switch it to the "open" position by pulling on said plug (4). 15 - Capsule according to claim 13 wherein said cover (74) and said rigid ring (5) cooperate by means of attachment means (561,741) so as to maintain said cover (74) in the "closed" position before said first opening , and to switch it to the "open" position by driving in said plug (4), after breaking a weakening line (73). 16 - Capsule according to any one of claims 1 to 15 wherein said rigid ring (5) is fixed to said neck (3) by an adhesive layer (10). 17 - Capsule according to any one of claims 1 to 15 wherein said rigid ring (5) is fixed to said neck (3) by means of a flexible ring (6) in which the rigid ring (5) is fitted, which causes a radial spacing of the lower end of the flexible ring (6), its plating against the interior surface of said neck and the axial locking of said rigid ring (5), in particular by using open rings (64,65) .