CLOSURE ASSEMBLY FOR A THIN-WALLED PACKAGING POUCH

Description

[0001] The present invention relates to the field of thin-walled packaging, usually referred to as "pouches," and in particular to the field of packaging equipped with a spout for the outflow of the product. In particular, the object of the present invention is a closure assembly for a flexible a thin-walled packaging.

[0002] Such packaging is now widely spread and used above all for containing products for children, such as fruit juices and purees, yogurt, vegetable purees, and drinks. The enormous known diffusion of such packaging is attributable to the great convenience of use and ease of use by children, as well as to the playful component linked to the use of the spout and the need to crush the packaging to make the product outflow.

[0003] Currently, several hundreds of millions of flexible packaging with a spout are produced worldwide. In the prior art, closure assemblies are known from JP 2007 204124 A, JP 2006 335416 A, US 2008/073348 A1, EP 3 628 608 A1, and JP 2012 166824 A.

[0004] As is occurring for numerous other widely consumed goods, even in the field of flexible packaging with spouts there are significant efforts in research and development by producers, in order to produce and market a good which is respectful of the environment, as well as capable of meeting the needs mentioned above.

[0005] In this regard, one of the most felt drawbacks in the sector is that the cap which closes the spout, once unscrewed, can be inadvertently lost by the user, due to the small size thereof, or incorrectly disposed of, without proceeding to proper disposal.

[0006] Given the volumes produced and marketed each year, one can imagine how important it is that such caps are disposed of correctly. It is therefore essential that, after unscrewing the cap, the cap remains connected to the spout so that the entire packaging is disposed of correctly.

[0007] There are already known solutions of caps for spouts of thin-walled packaging, provided with a fastener which keeps the cap connected to the spout, for example by means of a collar.

[0008] However, the known solutions have some drawbacks.

[0009] For example, the cap which remains connected to the spout hinders the use of the spout itself. In fact, it is not uncommon that while using the spout, the cap touches the region around the lips, annoying the child.

[0010] The object of the present invention is to provide a closure assembly which meets the needs of the field and overcomes the drawbacks mentioned with reference to the background art.

[0011] Such an object is achieved by a closure assembly according to claim 1. The dependent claims identify further advantageous embodiments of the invention.

[0012] The features and advantages of the closure assembly according to the present invention will be apparent from the description given below, provided by way of nonlimiting example, in accordance with the accompanying drawings, in which:

• figures 1a and 1b show a packaging comprising a closure assembly according to the present invention, respectively in a closing configuration and in an opening configuration;
• figures 2a and 2b depict a closure assembly according to an embodiment of the present invention, respectively in a closing configuration and in an opening configuration;
• figures 3 and 4 show a closure of the closure assembly according to an embodiment of the present invention;
• figures 5 and 7 show the closure assembly according to an embodiment of the present invention, in a coupling configuration;
• figure 6 is an enlargement of box VI of figure 5;
• figure 8 shows a detail of the connection between the fastener and the ring in the closure assembly according to an embodiment of the present invention.

[0013] A flexible thin-walled packaging P comprises a flexible bag B having at least a front wall and a rear wall, made from a thin film, joined together along peripheral edges by a weld. Above, between the upper edge of the front wall and the upper edge of the rear wall, a spout S is attached for the outflow of the product contained in the packaging; the spout is closed by a closure C.

[0014] The bag comprises a first side wall, welded between first side edges of the front wall and of the rear wall, for example on a first side; according to a still further embodiment, the bag comprises a second side wall, welded between second side edges of the front wall and the rear wall, for example on a second side.

[0015] The bag comprises a bottom wall, welded between the lower edges of the front wall and the rear wall, to form a base of the packaging.

[0016] The thin film is single-layer or multi-layer; permeable to oxygen or impermeable to oxygen.

[0017] In accordance with the figures of the accompanying drawings, the reference numeral 1 indicates as a whole a closure assembly comprising the spout S and the closure C which can be attached to the spout S. The closure C in turn comprises a cap 6 and a connecting device 8 for the permanent connection between the cap 6 and the spout S.

[0018] From a lower end toward an upper end, the spout S comprises a connecting portion 9, generally referred to as the "welding boat," intended to be attached between the upper edges of the front wall and the rear wall of the bag B, a lower plate 10, which delimits the connecting portion 9 at the top, a lower flange 12, axially spaced apart from the lower plate 10, and an upper flange 14, axially spaced apart from the lower flange 12.

[0019] Therefore, an annular connecting seat 15 is formed between the lower flange 12 and the upper flange 14, while an annular coupling seat 17 is formed between the lower plate 10 and the lower flange 12.

[0020] The spout S further comprises a tube 16, projecting axially from the upper flange 14, ending with a tube edge 18 which peripherally delimits an opening 20 for the outflow of the product from the packaging. The tube 16 extends along a main axis X and has a thread 22 outside for the engagement of the spout S with the cap 6.

[0021] The spout 2 further has an inner duct 24, coaxial to the main axis X, which extends from the mouth 20 to the lower end of the connecting portion 9 or, in a variant embodiment, there below.

[0022] The spout S is made in a single piece of plastic material, for example by means of injection molding.

[0023] The cap 6 comprises an annular side wall 30, which extends around a main axis Y of the cap 6, between an upper cap edge 32 and a lower cap edge 33, and a base 34 which closes it at the top, connected to said upper cap edge 32.

[0024] The side wall 30 of the cap 6 is internally threaded for screwing onto the tube 16 of the spout 2.

[0025] The cap 6 comprises a cap flange 36 at the bottom, projecting radially outwards from the lower cap edge 33 and having a free lower surface 37, for example in the form of a flat circular crown.

[0026] The connecting device 8 comprises a connecting element or ring 40, which can be axially constrained to the spout S, for example arranged in the connecting seat 15, between the lower flange 12 and the upper flange 14, freely rotatable in said connecting seat 15.

[0027] The ring 40 has a predefined axial height, between a lower surface 42, for example in the form of a flat circular crown, and an upper surface 44, for example rounded, which, when the cap 6 is screwed to the spout 2, faces the lower surface 37 of the cap flange 36.

[0028] The ring 40 also has an outer side surface 45a, for example cylindrical, and an annular inner side surface 45b. On said annular inner surface 45b there is an annular protuberance 45c, continuous or in sections, which, when the ring is attached to the spout 2, creates an axial constraint, snapping into the connecting seat 15.

[0029] The connecting device 8 further comprises a plurality of breakable jumpers 46 which, when intact, join the ring 40 to the cap 6, and in particular the ring 40 to the cap flange 36.

[0030] According to a preferred embodiment, said jumpers 46 join the upper surface 44 of the ring 40 to the lower surface 37 of the cap flange 36.

[0031] Furthermore, according to a preferred embodiment, the connecting device 8 comprises at least one tooth 47a, projecting from the ring 40, for example axially, and in particular from the lower surface 37 of the cap flange 36, and at least one recess 47b, obtained in the ring 40, and in particular in the upper surface 44 thereof. The tooth 47a is at least partially received in the recess 47b and is configured to abut against a wall delimiting said recess 47b. When the cap 6 is unscrewed, the tooth 47a abuts against a wall of the recess 47b and easily drags the ring 40 in rotation.

[0032] The connecting device 8 further comprises a flexible connecting band or fastener 50, having a main extension along a dimension which forms the length thereof, between a ring end 52, joined to the ring 40, and in particular to the outer side surface 45a thereof, and a cap end 54, joined to the cap 6, and in particular to the cap flange 36, and preferably to an outer side surface thereof.

[0033] Preferably, the fastener 50 has a cross section, obtained with a rectangular section plane which is orthogonal to the longitudinal direction, preferably oriented so that the shorter side is parallel to the central axis Y of the cap 6.

[0034] The fastener 50 is configured to break by traction near the end of the ring 52, so that if the child tries, for example playing, to tear the cap 6 from the spout 2 by pulling it, the fastener 50 breaks near the ring 40, while a main portion remains connected to the cap. Advantageously, this allows the spout to be used, placing it between the lips, without incurring the discomfort which would be caused by a possible piece of fastener connected to the ring.

[0035] For this purpose, at the end of the ring 52, the fastener 50 has a weakening 60, for example consisting of a notch made at the connection between the fastener 50 and the ring 40, or a reduction of the resistant section between the fastener 50 and the ring 40.

[0036] The cap 6 and the connecting device 8 together form the closure C and are made in a single piece in plastic material, for example by means of injection molding.

[0037] The cap 6 further comprises a coupling portion 70 adapted to engage with a coupling region 72 of the spout S in order to retain the cap 6 in a predefined position with respect to said spout S.

[0038] In other words, the fastener 50 forms a permanent connection between the cap 6 and the spout S, but when the cap 6 is unscrewed, it assumes a random position with respect to the spout, often such as to hinder the use of the spout itself. The engagement between the coupling portion 70 of the cap 6 and the coupling region 72 of the spout S can be obtained only when the cap 6 is unscrewed from the spout S and allows the cap to be kept in a predefined position with respect to the spout, such as not to bring discomfort to the user when the spout is between the lips.

[0039] Preferably, said coupling region 72 is outside the tube 16 of the spout S, so as to be sufficiently far from the mouth 20.

[0040] Preferably, moreover, when the coupling portion 70 of the cap 6 is engaged with the coupling region 72 of the spout, the cap 6 is arranged so that the central axis Y lies on an imaginary plane which is orthogonal to the main axis X of the tube 16.

[0041] For example, the cap 6 comprises a gripping paddle 80, for example axially projecting from the base 34 and/or radially projecting from the side wall 30, provided with a peripheral edge 82.

[0042] For example, the paddle 80 has a flat shape, substantially lying on an imaginary plane which contains the central axis Y of the cap 6, for example also passing through a center line of the fastener 50.

[0043] A portion 84 of the peripheral edge 82 obtains said coupling portion 70; preferably, said portion 84 is enlarged with respect to the remaining part of the peripheral edge 82.

[0044] Furthermore, the cap 6 preferably has a plurality of coupling portions 70. For example, the peripheral edge 82 comprises said portion 84 and a further portion 86, symmetrical to the portion 84 with respect to the main axis Y of the cap 6.

[0045] According to the invention, the coupling seat 17 of the spout S forms said coupling region 72.

[0046] In an initial configuration (figures 1a and 2a), the cap 6 is screwed to the tube 16 of the spout S, the ring 40 is arranged in the connecting seat 15, axially constrained to the spout S and free to rotate in said connecting seat 15, and the jumpers 46 are intact and join the ring 40 to the cap flange 36.

[0047] By unscrewing the cap 6 from the spout S, this drags the ring 40 in rotation and simultaneously moves axially on the tube 16, causing the jumpers 36 to break.

[0048] Once the unscrewing has been completed (figures 1b and 2b), the inner duct 24 of the spout S is accessible through the mouth 20, the jumpers 36 are broken, reflecting the tampering, and the cap 6 remains constrained to the spout S by means of the fastener 50 which continues to join the cap 6 to the ring 40, in turn constrained to the spout S.

[0049] Finally, in a coupling configuration (figures 5 and 7), the coupling portion 70 of the cap 6 is engaged with the coupling region 72 of the spout S, so as to retain the cap 6 in a predefined position with respect to the spout S, such as not to hinder the use of the spout S.

[0050] Preferably, the engagement between the coupling portion 70 and the coupling region 72 is a pressure engagement, obtained by forced insertion of the coupling portion 70 in the coupling region 72, for example of the portion 84 of the cap 6 in the coupling seat 17 of the spout S.

[0051] According to a further embodiment, the engagement between the coupling portion 70 and the coupling region 72 is a snap-in engagement.

[0052] According to a still further embodiment, the engagement between the coupling portion 70 and the coupling region 72 is a positive-fit engagement, i.e., between a shaped element of the coupling portion and a counter-shaped element of the coupling region, with or without forcing.

[0053] Innovatively, the closure assembly according to the present invention meets the needs of the field, as it allows the cap to be kept in permanent connection with the bag, by means of the fastener which joins it to the spout, and at the same time overcomes the aforementioned drawbacks, as the cap is arranged in a position in which it does not hinder the use of the spout.

[0054] It is apparent that, in order to meet contingent needs, those skilled in the art may make changes to the closure assembly described above, all contained within the scope of protection as defined by the following claims.

Claims

1. A closure assembly (1) for a flexible thin-walled packaging (P), comprising:

- a spout (S), which is sealingly attachable to a bag (B) of the packaging (P), provided with a tube (16) which extends along a central axis (X) and ends in a mouth (20), and is equipped with a coupling region (72);

- a closure (C) which can be attached to the spout (S), comprising:

i) a ring (40) which is attached to the spout (S) and is axially constrained and free to rotate;

ii) a cap (6) which has a central axis (Y), can be screwed to the tube (16), and is adapted to close the mouth (20), comprising a coupling portion (70);

iii) a fastener (50) which connects the ring (40) to the cap (6);

wherein the coupling portion (70) can engage with the coupling region (72) in order to retain the cap (6) in a predefined position with respect to the spout (S); wherein the spout (S) comprises a lower plate (10) and a lower flange (12), which project radially outwards and are axially spaced apart so as to obtain a coupling seat (17) which forms said coupling region (72);

wherein the closure assembly (1) is characterized in that the cap (6) comprises a paddle (80) for gripping and unscrewing it, which is provided with a peripheral edge (82), and a portion (84) of said peripheral edge (82) forms said coupling portion (70).

2. A closure assembly according to claim 1, wherein the coupling region (72) is outside the tube (16).

3. A closure assembly according to claim 1 or 2, wherein, when the coupling portion (70) of the cap (6) engages with the coupling region (72) of the spout (S), the cap (6) is arranged such that the central axis (Y) lies on an imaginary plane which is orthogonal to the main axis (X) of the tube (16).

4. A closure assembly according to any one of the preceding claims, wherein the engagement between the coupling portion (70) and the coupling region (72) is a pressure engagement.

5. A closure assembly according to any one of the preceding claims, wherein the engagement between the coupling portion (70) and the coupling region (72) is a snap-in engagement.

6. A closure assembly according to any one of the preceding claims, wherein the engagement between the coupling portion (70) and the coupling region (72) is a positive-fit engagement.

7. A closure assembly according to any one of the preceding claims, wherein the spout (S) comprises an upper flange (14), which projects radially outwards and is axially spaced apart from the lower flange (12) on the opposite side to the lower plate (10) so as to form a connecting seat (15) together with the lower plate (12) for engagement with the ring (40).

8. A closure assembly according to claim 7, wherein the spout (S) comprises a connecting portion (9) which is sealingly weldable to the bag (B), said connecting portion being axially delimited at the top by said lower plate (10).

9. A closure assembly according to any one of the preceding claims, wherein said portion (84) is enlarged with respect to the remaining adjacent part of the peripheral edge (82).

10. A closure assembly according to any one of the preceding claims, wherein the cap (6) comprises a plurality of coupling portions (70).

11. A closure assembly according to claim 10, wherein the cap (6) comprises two coupling portions (70) arranged symmetrically with respect to the central axis (Y) of the cap (6).

12. A closure assembly according to any one of the preceding claims, wherein the closure (C) is formed in one piece of plastic material, for example by means of injection molding.

13. A closure assembly according to any one of the preceding claims, wherein the fastener (50) has a rectangular cross section.

14. A closure assembly according to any one of the preceding claims, wherein, at a ring end (52) where it joins the ring (40), the fastener (50) has a weakened portion (60) for tearing the fastener (50) in a controlled manner.

15. A closure assembly according to claim 14, wherein said weakened portion (60) consists of a reduction in the cross section between the fastener (50) and the ring (40) .

Ansprüche

1. Verschlussanordnung (1) für eine flexible dünnwandige Verpackung (P), aufweisend:

- einen Ausgießer (S), der abdichtend an einem Beutel (B) der Verpackung (P) anbringbar ist, der mit einem Rohr (16) versehen ist, das sich entlang einer Mittelachse (X) erstreckt und in einer Mündung (20) endet, und mit einem Kopplungsbereich (72) ausgestattet ist;

- einen Verschluss (C), der an dem Ausgießer (S) angebracht werden kann, aufweisend:

i) einen Ring (40), der an dem Ausgießer (S) angebracht ist und axial eingespannt und frei drehbar ist;

ii) eine Kappe (6), die eine Mittelachse (Y) aufweist, die auf das Rohr (16) aufgeschraubt werden kann und eingerichtet ist, die Mündung (20) zu verschließen, aufweisend einen Kopplungsabschnitt (70) ;

iii) ein Befestigungselement (50), das den Ring (40) mit der Kappe (6) verbindet;

wobei der Kopplungsabschnitt (70) in den Kopplungsbereich (72) eingreifen kann, um die Kappe (6) in einer vordefinierten Position in Bezug auf den Ausgießer (S) zu halten;

wobei der Ausgießer (S) eine untere Platte (10) und einen unteren Flansch (12) aufweist, die radial nach außen hervorstehen und axial voneinander beabstandet sind, um einen Kopplungssitz (17) zu erhalten, der den Kopplungsbereich (72) bildet;

wobei die Verschlussanordnung (1) dadurch gekennzeichnet ist, dass die Kappe (6) ein Paddel (80) zum Greifen und Abschrauben derselben aufweist, das mit einer Umfangskante (82) versehen ist, und ein Abschnitt (84) der Umfangskante (82) den Kopplungsabschnitt (70) bildet.

2. Verschlussanordnung nach Anspruch 1, wobei sich der Kopplungsbereich (72) außerhalb des Rohrs (16) befindet.

3. Verschlussanordnung nach Anspruch 1 oder 2, wobei, wenn der Kopplungsabschnitt (70) der Kappe (6) in den Kopplungsbereich (72) des Ausgießers (S) eingreift, die Kappe (6) derart angeordnet ist, dass die Mittelachse (Y) auf einer imaginären Ebene liegt, die orthogonal zur Hauptachse (X) des Rohrs (16) liegt.

4. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei der Eingriff zwischen dem Kopplungsabschnitt (70) und dem Kopplungsbereich (72) ein Druckeingriff ist.

5. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei der Eingriff zwischen dem Kopplungsabschnitt (70) und dem Kopplungsbereich (72) ein Rasteingriff ist.

6. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei der Eingriff zwischen dem Kopplungsabschnitt (70) und dem Kopplungsbereich (72) ein Formschlusseingriff ist.

7. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei der Ausgießer (S) einen oberen Flansch (14) aufweist, der radial nach außen hervorsteht und von dem unteren Flansch (12) auf der der unteren Platte (10) gegenüberliegenden Seite axial beabstandet ist, um zusammen mit der unteren Platte (12) einen Verbindungssitz (15) zum Eingriff mit dem Ring (40) zu bilden.

8. Verschlussanordnung nach Anspruch 7, wobei der Ausgießer (S) einen Verbindungsabschnitt (9) aufweist, der mit dem Beutel (B) dicht verschweißt sein kann, wobei der Verbindungsabschnitt an der Oberseite durch die untere Platte (10) axial begrenzt ist.

9. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei der Abschnitt (84) in Bezug auf den verbleibenden benachbarten Teil der Umfangskante (82) vergrößert ist.

10. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei die Kappe (6) eine Vielzahl von Kopplungsabschnitten (70) aufweist.

11. Verschlussanordnung nach Anspruch 10, wobei die Kappe (6) zwei Kopplungsabschnitte (70) aufweist, die symmetrisch in Bezug auf die Mittelachse (Y) der Kappe (6) angeordnet sind.

12. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei der Verschluss (C) in einem Stück aus Kunststoffmaterial gebildet ist, beispielsweise mittels Spritzgießen.

13. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei das Befestigungselement (50) einen rechteckigen Querschnitt aufweist.

14. Verschlussanordnung nach einem der vorstehenden Ansprüche, wobei das Befestigungselement (50) an einem Ringende (52), an dem er mit dem Ring (40) verbunden ist, einen geschwächten Abschnitt (60) zum kontrollierten Abreißen des Befestigungselements (50) aufweist.

15. Verschlussanordnung nach Anspruch 14, wobei der geschwächte Abschnitt (60) in einer Verringerung des Querschnitts zwischen dem Befestigungselement (50) und dem Ring (40) besteht.

Revendications

1. Ensemble de fermeture (1) pour un emballage souple à paroi mince (P), comprenant :

- un bec verseur (S), qui peut être attaché de manière étanche à une poche (B) de l'emballage (P), doté d'un tube (16) qui s'étend le long d'un axe central (X) et se termine par une embouchure (20), et est équipé d'une région de couplage (72) ;

- une fermeture (C) qui peut être attachée au bec verseur (S), comprenant :

i) une bague (40) qui est attachée au bec verseur (S) et est contrainte axialement et libre de tourner ;

ii) un capuchon (6) qui présente un axe central (Y), peut être vissé au tube (16) et est adapté pour fermer l'embouchure (20), comprenant une portion de couplage (70) ;

iii) une attache (50) qui relie la bague (40) au capuchon (6) ;

dans lequel la portion de couplage (70) peut venir en prise avec la région de couplage (72) afin de retenir le capuchon (6) dans une position prédéfinie par rapport au bec verseur (S) ;

dans lequel le bec verseur (S) comprend une plaque inférieure (10) et une bride inférieure (12), qui font saillie radialement vers l'extérieur et sont espacées axialement de manière à obtenir un siège de couplage (17) qui forme ladite région de couplage (72) ;

dans lequel l'ensemble de fermeture (1) est caractérisé en ce que le capuchon (6) comprend une palette (80) pour la saisie et le dévissage de celui-ci, qui est dotée d'un bord périphérique (82), et une portion (84) dudit bord périphérique (82) forme ladite portion de couplage (70).

2. Ensemble de fermeture selon la revendication 1, dans lequel la région de couplage (72) est à l'extérieur du tube (16).

3. Ensemble de fermeture selon la revendication 1 ou 2, dans lequel, lorsque la portion de couplage (70) du capuchon (6) vient en prise avec la région de couplage (72) du bec verseur (S), le capuchon (6) est disposé de sorte que l'axe central (Y) se trouve sur un plan imaginaire qui est orthogonal à l'axe principal (X) du tube (16).

4. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel la mise en prise entre la portion de couplage (70) et la région de couplage (72) est une mise en prise par pression.

5. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel la mise en prise entre la portion de couplage (70) et la région de couplage (72) est une mise en prise par encliquetage.

6. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel la mise en prise entre la portion de couplage (70) et la région de couplage (72) est une mise en prise par ajustement positif.

7. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel le bec verseur (S) comprend une bride supérieure (14), qui fait saillie radialement vers l'extérieur et est axialement espacée de la bride inférieure (12) du côté opposé à la plaque inférieure (10) de manière à former un siège de liaison (15) conjointement avec la plaque inférieure (12) pour une mise en prise avec la bague (40).

8. Ensemble de fermeture selon la revendication 7, dans lequel le bec verseur (S) comprend une portion de liaison (9) qui peut être soudée de manière étanche à la poche (B), ladite portion de liaison étant délimitée axialement en haut par ladite plaque inférieure (10).

9. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel ladite portion (84) est élargie par rapport à la partie adjacente restante du bord périphérique (82).

10. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel le capuchon (6) comprend une pluralité de portions de couplage (70).

11. Ensemble de fermeture selon la revendication 10, dans lequel le capuchon (6) comprend deux portions de couplage (70) disposées symétriquement par rapport à l'axe central (Y) du capuchon (6).

12. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel la fermeture (C) est formée en une seule pièce en matière plastique, par exemple par moulage par injection.

13. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel l'attache (50) a une section transversale rectangulaire.

14. Ensemble de fermeture selon l'une quelconque des revendications précédentes, dans lequel, au niveau d'une extrémité de bague (52) où elle rejoint la bague (40), l'attache (50) présente une portion fragilisée (60) pour déchirer l'attache (50) de manière contrôlée.

15. Ensemble de fermeture selon la revendication 14, dans lequel ladite portion fragilisée (60) consiste en une réduction de la section transversale entre l'attache (50) et la bague (40).

Drawing