FR2639031A3 - Threaded cap for container comprising a fracture zone formed by means of helical cutouts - Google Patents

Threaded cap for container comprising a fracture zone formed by means of helical cutouts Download PDF

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Publication number
FR2639031A3
FR2639031A3 FR8815196A FR8815196A FR2639031A3 FR 2639031 A3 FR2639031 A3 FR 2639031A3 FR 8815196 A FR8815196 A FR 8815196A FR 8815196 A FR8815196 A FR 8815196A FR 2639031 A3 FR2639031 A3 FR 2639031A3
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France
Prior art keywords
container
capsule
slots
plug
slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8815196A
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French (fr)
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FR2639031B3 (en
Inventor
Pierre Salmon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Nouvelle de Bouchons Plastiques SNBP
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Societe Nouvelle de Bouchons Plastiques SNBP
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Application filed by Societe Nouvelle de Bouchons Plastiques SNBP filed Critical Societe Nouvelle de Bouchons Plastiques SNBP
Priority to FR8815196A priority Critical patent/FR2639031B3/en
Publication of FR2639031A3 publication Critical patent/FR2639031A3/en
Application granted granted Critical
Publication of FR2639031B3 publication Critical patent/FR2639031B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

The lateral skirt 21 of the stopper comprises a series of oblique slits 5 which traverse it right through and are disposed in such a way that the lowest end 51 of each slit 5 is offset with respect to the highest end 52 of the preceding slit.

Description

La présente invention est relative aux bouchons comportant un dispositif d'inviolabilité, plus particulièrement une structure permettant de réaLiser l'ouverture du bouchon par déchirement d'une zone de moindre résistance. The present invention relates to stoppers comprising a tamper-evident device, more particularly a structure making it possible to realize the opening of the stopper by tearing an area of least resistance.

On sait à ce jour que les bouchons de ce type comprennent une capsule à vis réalisant L'obturation du récipient après montage et une bande de garantie munie d'un bourrelet circulaire interne. It is known to date that plugs of this type include a screw cap which obtains the closure of the container after mounting and a guarantee strip provided with an internal circular bead.

Entre La capsule et la bande de garantie se trouve une zone de rupture qui permet, au moment du dévissage de la capsule, la séparation de la capsule et de La bande de garantie. Cette séparation est réalisée par le fait que ladite bande de garantie est retenue par le bourreLet sur le récipient, si bien que l'éloignement de ta capsule crée une contrainte d'arrachement dans la zone de rupture. Between the capsule and the guarantee strip is a rupture zone which allows, when the capsule is unscrewed, the separation of the capsule and the guarantee strip. This separation is carried out by the fact that said guarantee strip is retained by the flock on the container, so that the remoteness of your capsule creates a tearing stress in the rupture zone.

Lors de la mise en pLace du bouchon, il arrive que la force déve- loppée par le vissage de La capsule sur le goulot du récipient entrasse l'arrachement de La zone de rupture souvent réalisée au moyen de petits ponts de liaison espacés les uns des autres sur la périphérie de la capsule. When putting the cap in place, it sometimes happens that the force developed by screwing the capsule on the neck of the container overlaps the tearing of the rupture zone often produced by means of small connecting bridges spaced apart others on the periphery of the capsule.

Les perfectionnements qui font l'objet de la présente invention visent à remédier à cet inconvénient et à permettre la mise en oeuvre d'une zone de rupture dont la structure présente une grande résistance à l'effort de vissage de la capsule tout en conservant une grande facilite de déchirement lors de l'opération de dévissage, c'est-à-dire d'ouverture du récipient. The improvements which are the subject of the present invention aim to remedy this drawback and to allow the implementation of a rupture zone whose structure has great resistance to the screwing effort of the capsule while retaining a great ease of tearing during the unscrewing operation, that is to say of opening the container.

A cet effet, la jupe latérale du bouchon comprend une série de fentes obliques la traversant de part en part et disposées de maniere que l'extrémité La plus basse de chaque fente soit décalée Longitudinalement par rapport à L'extrémité la plus haute de la pente précédente. To this end, the side skirt of the stopper comprises a series of oblique slots traversing it right through and arranged so that the lowest end of each slot is offset longitudinally relative to the highest end of the slope former.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :
Fig. 1 est une vue en élévation avec arrachement du bouchon suivant l'invention.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
Fig. 1 is an elevation view with cutaway of the plug according to the invention.

Fig. 2 est une vue du bouchon après dévissage de sa capsule par rapport au goulot d'un récipient. Fig. 2 is a view of the cap after unscrewing its capsule relative to the neck of a container.

On a représenté en fig. 1 un bouchon ou obturateur 1 comportant essentiellement une capsule 2 composée d'un fond circulaire 20 à partir de la périphérie duquel se dresse une jupe tubulaire 21. L'extérieur de cette jupe est pourvu de stries longitudinales 22 permettant une bonne préhension de la capsule. La paroi interne de la jupe 21 comporte un filetage 23 destiné à coopérer avec les filets du goulot d'un récipient 3 illustré en traits discontinus en fig. 2. La jupe 21 s'étend largement en dessous de l'origine du filet 23 et sa paroi intérieure comporte un cordon 24 tourné vers l'intérieur et disposé au voisinage de l'extrémité libre de ladite jupe. There is shown in fig. 1 a plug or obturator 1 essentially comprising a capsule 2 composed of a circular bottom 20 from the periphery of which stands a tubular skirt 21. The outside of this skirt is provided with longitudinal grooves 22 allowing good grip of the capsule . The internal wall of the skirt 21 has a thread 23 intended to cooperate with the threads of the neck of a container 3 illustrated in broken lines in FIG. 2. The skirt 21 extends widely below the origin of the thread 23 and its inner wall has a cord 24 facing inward and disposed in the vicinity of the free end of said skirt.

A la manière connue, la jupe 21 comprend une zone de rupture 25 déterminant une bande de garantie déchirable 4. In the known manner, the skirt 21 comprises a rupture zone 25 defining a tearable guarantee strip 4.

Conformément à l'invention, cette zone de rupture est réalisée au moyen d'une série de fentes en hélice 5 orientées obliquement et disposées les unes derrières les autres. On observe que l'origine 51 de chaque fente se trouve disposée sur une meme génératrice que le bout 52 de la fente précédente, en présentant un decalage dans Le sens de cette génératrice qui détermine une portion non découpée 6. In accordance with the invention, this rupture zone is produced by means of a series of helical slots 5 oriented obliquely and arranged one behind the other. It is observed that the origin 51 of each slot is placed on the same generator as the tip 52 of the preceding slot, presenting an offset in the direction of this generator which determines an uncut portion 6.

Les origines 51 de toutes les fentes et Leurs bouts 52 se trouvent situés dans deux plans parallèles perpendiculaires à l'axe géométrique de la capsule 2. Les fentes sont préférablement, mais de manière non exclusive, réalisées au moyen d'une mollette pourvue de lames découpant de part en part la jupe 21 comme illustré en fig. 1 dans laquelle l'arrachement a été fait suivant un plan passant par les extrémités 51 et 52 de deux fentes successives. On ne reviendra pas sur la maniere dont les fentes sont réalisées, qui est en soi bien connue. On notera que l'inclinaison desdites fentes par rapport à un plan transversal perpendiculaire à l'axe du bouchon et passant par les origines basses 51 de ces fentes est de l'ordre de 50.  The origins 51 of all the slots and their ends 52 are located in two parallel planes perpendicular to the geometric axis of the capsule 2. The slots are preferably, but not exclusively, produced by means of a wheel provided with blades cutting right through the skirt 21 as illustrated in fig. 1 in which the tearing was done along a plane passing through the ends 51 and 52 of two successive slots. We will not return to the way in which the slits are made, which is in itself well known. It will be noted that the inclination of said slots relative to a transverse plane perpendicular to the axis of the plug and passing through the low origins 51 of these slots is of the order of 50.

On comprend aisément que les zones 6 renforcent considérablement la résistance de la zone de rupture 25 à L'encontre de la force développée par le vissage de la capsule. En particulier, en fonction de la résistance de la matière choisie pour La réalisation du bouchon 1, on choisit la hauteur de la portion 6 plus ou moins importante en faisant varier l'inclinaison des fentes 5. It is easily understood that the zones 6 considerably reinforce the resistance of the rupture zone 25 against the force developed by the screwing of the capsule. In particular, depending on the resistance of the material chosen for the production of the plug 1, the height of the portion 6 is chosen to a greater or lesser extent by varying the inclination of the slots 5.

Lorsque le bouchon a été vissé sur Le goulot du récipient 3, le bourrelet ou cordon 24 est enclenché dans une gorge de ce goulot, de telle sorte que le dévissage de la capsule 2 produit un effort d'arrachement axial sur la zone de rupture 25. Lorsqu'on dépasse la résistance au cisaillement de la matière constitutive du bouchon 1, dans les portions 6 l'on assiste à un déchirement de celles-ci qui provoque la réunion des extrémités correspondantes 51 et 52 des fentes successives. When the cap has been screwed onto the neck of the container 3, the bead or cord 24 is engaged in a groove in this neck, so that the unscrewing of the capsule 2 produces an axial tearing force on the rupture zone 25 When the shear strength of the material constituting the plug 1 is exceeded, in the portions 6 there is a tearing thereof which causes the corresponding ends 51 and 52 of the successive slots to meet.

Après ce déchirement, l'arête inférieure 26 de la capsule 2 et celle supérieure 41 de la bande de garantie 4 se présentent sous la forme de dents de scie complémentaires, comme illustré en fig. 2. Etant donné que la bande de garantie 4 peut tourner Librement autour du goulot du récipient 3, la présence des dents de scie en question n'entrave ni la fermeture, ni l'ouverture de la capsule 2 pour l'utilisation ulte- rieure du contenu du récipient 3. After this tearing, the lower edge 26 of the capsule 2 and the upper edge 41 of the guarantee strip 4 are in the form of complementary saw teeth, as illustrated in FIG. 2. Since the guarantee strip 4 can rotate freely around the neck of the container 3, the presence of the saw teeth in question does not hamper the closing or the opening of the capsule 2 for subsequent use. contents of container 3.

Bien entendu, même si les lames destinées à la réalisation des fentes 5 sont rectilignes, ces dernières sont constituées par des portions d'hélice du fait de la forme cylindrique de la jupe 21. Of course, even if the blades intended for producing the slots 5 are rectilinear, the latter are constituted by propeller portions due to the cylindrical shape of the skirt 21.

Il doit d'ailleurs être entendu que la description qui précède n'a été donnée qu'å titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents.  It should also be understood that the foregoing description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the details of execution described by all other equivalents.

Claims (4)

REVENDICATIONS 1. Bouchon (1) comportant une capsule à vis (2) prolongée par une bande de garantie déchirable (4) lors du dévissage, qui est séparée de ladite capsule (2) par une zone de rupture (25), caractérisé en ce que la jupe latérale (21) du bouchon comprend une série de fentes obliques (5) la traversant de part en part et disposées de manière que l'extrémité la plus basse (51) de chaque fente (5) soit decalée par rapport à 1. Stopper (1) comprising a screw capsule (2) extended by a tear-off guarantee strip (4) during unscrewing, which is separated from said capsule (2) by a rupture zone (25), characterized in that the side skirt (21) of the plug comprises a series of oblique slots (5) passing right through it and arranged so that the lowest end (51) of each slot (5) is offset relative to L'extrémité la plus haute (52) de la fente précédente.The uppermost end (52) of the preceding slot. 2. Bouchon suivant la revendication 1, caractérisé en ce que les extrémités basses (51) et hautes (52) des fentes se trouvent respectivement situées dans deux plans parallèles et perpendiculaires à l'axe général du bouchon (1). 2. Plug according to claim 1, characterized in that the low (51) and high (52) ends of the slots are located respectively in two planes parallel and perpendicular to the general axis of the plug (1). 3. Bouchon suivant la revendication 1, caractérisé en ce que l'ex trémité basse (51) de chaque fente (5) se trouve sur la même génératrice que l'extrémité haute (52) de la fente précédente. 3. A plug according to claim 1, characterized in that the lower end (51) of each slot (5) is on the same generator as the upper end (52) of the preceding slot. 4. Bouchon suivant la revendication 1, caractérisé en ce que les fentes (5) affectent la forme d'une portion d'hélice.  4. Plug according to claim 1, characterized in that the slots (5) affect the shape of a portion of a propeller.
FR8815196A 1988-11-16 1988-11-16 THREADED SHUTTER FOR CONTAINER HAVING A BREAKING AREA MADE BY MEANS OF PROPELLER CUT Expired - Lifetime FR2639031B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8815196A FR2639031B3 (en) 1988-11-16 1988-11-16 THREADED SHUTTER FOR CONTAINER HAVING A BREAKING AREA MADE BY MEANS OF PROPELLER CUT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8815196A FR2639031B3 (en) 1988-11-16 1988-11-16 THREADED SHUTTER FOR CONTAINER HAVING A BREAKING AREA MADE BY MEANS OF PROPELLER CUT

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FR2639031A3 true FR2639031A3 (en) 1990-05-18
FR2639031B3 FR2639031B3 (en) 1990-10-26

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FR8815196A Expired - Lifetime FR2639031B3 (en) 1988-11-16 1988-11-16 THREADED SHUTTER FOR CONTAINER HAVING A BREAKING AREA MADE BY MEANS OF PROPELLER CUT

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008129348A1 (en) * 2007-04-23 2008-10-30 Tetra Laval Holdings & Finance S.A. Closure for a neck of a container, container neck equipped with such a closure and method for fabricating such a closure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784281A (en) * 1984-12-10 1988-11-15 Oleg Rozenberg Tamper-evident closures

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784281A (en) * 1984-12-10 1988-11-15 Oleg Rozenberg Tamper-evident closures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008129348A1 (en) * 2007-04-23 2008-10-30 Tetra Laval Holdings & Finance S.A. Closure for a neck of a container, container neck equipped with such a closure and method for fabricating such a closure

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Publication number Publication date
FR2639031B3 (en) 1990-10-26

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