EP0350415B1 - Closure system combining a threaded cap and the threaded neck of a container - Google Patents

Closure system combining a threaded cap and the threaded neck of a container Download PDF

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Publication number
EP0350415B1
EP0350415B1 EP19890420239 EP89420239A EP0350415B1 EP 0350415 B1 EP0350415 B1 EP 0350415B1 EP 19890420239 EP19890420239 EP 19890420239 EP 89420239 A EP89420239 A EP 89420239A EP 0350415 B1 EP0350415 B1 EP 0350415B1
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EP
European Patent Office
Prior art keywords
neck
threads
capsule
cap
sealing
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.)
Expired - Lifetime
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EP19890420239
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German (de)
French (fr)
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EP0350415A1 (en
Inventor
Pierre Salmon
Jimmy Louvatiere
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Cessione Novembal SA
Original Assignee
Societe Nouvelle de Bouchons Plastiques SNBP
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Publication of EP0350415A1 publication Critical patent/EP0350415A1/en
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Publication of EP0350415B1 publication Critical patent/EP0350415B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D41/00—Caps, 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D41/00—Caps, 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/16—Snap-on caps or cap-like covers
    • B65D41/17—Snap-on caps or cap-like covers push-on and twist-off

Definitions

  • the present invention relates to improvements made to shutter systems combining a screw cap and a threaded neck and it relates more particularly to such a cap whose thread is intended to be engaged elastically by an axial movement relative to said threaded neck.
  • Capsules are known that have at least one inner cord intended to snap elastically into at least one groove formed on the neck of a container. If the retention is effective in order to obtain a good seal, the extraction of the capsule is very difficult. On the contrary, if the insertion is relatively easy in order to allow an easy extraction, the sealing is poor.
  • the improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the production of a capsule which can be snapped in relation to the neck of a container by allowing on the one hand to obtain a very good seal and on the other hand easy extraction.
  • the closure system according to the invention constituted by a screw cap intended to cooperate with the threaded neck of a container, is characterized in that the number of threads of the neck and that of the capsule are different and in that at least one of these elements is associated with a sealing means cooperating with the other element in order to ensure sealing whatever the degree of depression of the capsule on the neck.
  • the capsule comprises a central sleeve cooperating with the neck to ensure sealing.
  • the capsule has two threads and the neck four, said threads being respectively angularly offset by 180 ° and 90 °.
  • a capsule 1 intended to close the neck 2 of a container 3.
  • the capsule 1 comprises as usual a circular bottom 10 whose periphery cooperates with a cylindrical skirt 11 standing perpendicular to the bottom 10 and whose inner face 11 a is provided with two threads 12 offset 180 ° relative to each other to the other, as illustrated in fig. 2.
  • the underside 10a of the bottom 10 is associated with a tubular sleeve 13, the end edge 13a is slightly tapered towards the center.
  • a capsule can be produced by pressure molding of a suitable elastic plastic material, in particular polyethylene.
  • the neck 2 assumes the shape of a cylinder on the outer face of which are formed four threads 20, as more particularly well illustrated in the press of FIG. 3.
  • the origins of the threads 20 are offset by 90 ° and they each extend over an angle of 180 °.
  • the threads 12 and those 20 have their origins slightly below the vertical generator of each of their departures at 90 ° and 180 ° and their completion takes place slightly after said departures. This is how the two threads 12 start and end on either side of the generators referenced 0 and 180 °, while in FIG. 3, the threads 20 leave and arrive in pairs on either side of the generatrices illustrating four quarters of the circumference.
  • the abovementioned capping operation consists, according to the invention, in exerting an axial pressure on the capsule in the direction of the container in order to snap the threads of the capsule resiliently relative to certain threads of the neck or vice versa.
  • the origin of the two threads 12 of the capsule corresponds to that of two threads 20 of the neck (those located at the generators 0 and 180 °), so that the threads 12 bear on the entire length of two threads 20 of the neck.
  • the retention of the capsule is carried out according to two helical arcs of circle covering the entire periphery of the neck and of the capsule.
  • Sealing is achieved by the cooperation of the sleeve 13 with a narrowing 21 of the neck, regardless of the degree of depression of the capsule on this neck.
  • FIG. 9 another sealing means consisting of an elastic washer 4 with which the end edge 22 of the neck cooperates, and which ensures the sealing as well in the position of FIG. 4 as in that of FIG. 7.
  • an elastic washer 4 with which the end edge 22 of the neck cooperates, and which ensures the sealing as well in the position of FIG. 4 as in that of FIG. 7.
  • the washer 4 could also be carried by the neck without departing from the scope of the invention.
  • an actual pitch of 8 mm is chosen for the threads so that the unscrewing is very rapid
  • the apparent pitch that is to say the ratio real pitch / number of threads is four for the capsule and two for the neck, it being understood that the case remains where the neck has four threads and the capsule two.
  • the number of threads 12 ′ of the capsule 1 is one greater than that of the threads 20 ′ of the neck 2, so that the axial engagement by force of the capsule 1 on the neck 2 s' performed by overlapping the respective threads, but only one of the threads 12 ′ of the capsule engaging under one of the threads 20 ′ of the neck 2, as illustrated in FIG. 12. Under these conditions, the capsule is retained by only one of its peripheral points relative to the neck (fig. 13), the anchoring point being referenced A in fig. 12 and 13.
  • the advantage of this variant compared to the embodiment described above consists in the fact that it is ensured to avoid any axial elastic displacement of the capsule, since in all cases one, two or three threads or thread caps of the capsule engage with a corresponding number of fillets or caps of fillet from the neck.
  • the sealing means between the capsule and the neck can be a simple flat seal 4 not having a high compression capacity, but the usual qualities of such a seal.
  • the screw cap be made of a material elastic allowing its deformation during the overlapping of the threads and its return to its initial position.

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

Description

La présente invention est relative à des perfectionnements apportés aux systèmes d'obturation combinant une capsule à vis et un goulot fileté et elle vise plus particulièrement une telle capsule dont le filetage est destiné à être engagé élastiquement par un mouvement axial par rapport audit goulot fileté.The present invention relates to improvements made to shutter systems combining a screw cap and a threaded neck and it relates more particularly to such a cap whose thread is intended to be engaged elastically by an axial movement relative to said threaded neck.

On connaît des capsules comportant au moins un cordon intérieur destiné à venir s'encliqueter élastiquement dans au moins une gorge ménagée sur le goulot d'un récipient. Si la retenue est efficace en vue d'obtenir une bonne étanchéité, l'extraction de la capsule est très difficile. Au contraire, si l'enfoncement est relativement aisé en vue de permettre une extraction facile, l'étanchéité est mauvaise.Capsules are known that have at least one inner cord intended to snap elastically into at least one groove formed on the neck of a container. If the retention is effective in order to obtain a good seal, the extraction of the capsule is very difficult. On the contrary, if the insertion is relatively easy in order to allow an easy extraction, the sealing is poor.

Les perfectionnements qui font l'objet de la présente invention visent à remédier à ces inconvénients et à permettre la réalisation d'une capsule qui puisse être encliquetée par rapport au goulot d'un récipient en permettant d'une part l'obtention d'une très bonne étanchéité et d'autre part une extraction aisée.The improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the production of a capsule which can be snapped in relation to the neck of a container by allowing on the one hand to obtain a very good seal and on the other hand easy extraction.

A cet effet, le système d'obturation suivant l'invention, constitué par une capsule à vis destinée à coopérer avec le goulot fileté d'un récipient, est caractérisé en ce que le nombre de filets du goulot et celui de la capsule sont différents et en ce que l'un au moins de ces éléments est associé à un moyen d'étanchéité coopérant avec l'autre élément en vue d'assurer l'étanchéité quel que soit le degré d'enfoncement de la capsule sur le goulot.To this end, the closure system according to the invention, constituted by a screw cap intended to cooperate with the threaded neck of a container, is characterized in that the number of threads of the neck and that of the capsule are different and in that at least one of these elements is associated with a sealing means cooperating with the other element in order to ensure sealing whatever the degree of depression of the capsule on the neck.

Dans un mode d'exécution préféré de la disposition qui précède, la capsule comporte un manchon central coopérant avec le goulot pour assurer l'étanchéité. En outre, la capsule comporte deux filets et le goulot quatre, lesdits filets étant respectivement décalés angulairement de 180° et de 90°.In a preferred embodiment of the above arrangement, the capsule comprises a central sleeve cooperating with the neck to ensure sealing. In addition, the capsule has two threads and the neck four, said threads being respectively angularly offset by 180 ° and 90 °.

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 éclatée d'un dispositif d'obturation établi conformément à l'invention avec la capsule représentée en coupe.
  • Fig. 2 et 3 sont respectivement des vues développées de la face interne de la jupe de l'obturateur et du pourtour du goulot du réservoir.
  • Fig. 4 montre en coupe le système d'obturation suivant l'invention à l'état monté.
  • Fig. 5 est une vue développée de la coopération des filets de la capsule et du goulot dans la meilleure orientation de l'un par rapport à l'autre.
  • Fig. 6 est une vue semblable à celle de fig. 4, mais montrant la manière dont les filets de la capsule coopérent avec ceux du goulot dans l'orientation la plus défavorable de ladite capsule par rapport au goulot.
  • Fig. 7 montre comment la capsule se déplace vers le haut grâce à son élasticité dans le cas de fig. 6.
  • Fig. 8 est une vue développée semblable à celle de fig. 5, mais montrant la manière dont les filets de la capsule coopérent avec ceux du goulot dans la plus mauvaise orientation de la capsule correspondant à celle illustrée en fig. 7.
  • Fig. 9 est une vue semblable à celle de fig. 7, mais montrant une variante d'exécution du moyen d'étanchéité.
  • Fig. 10 et 11 sont des vues semblables à celles de fig. 2 et 3, mais illustrant une variante.
  • Fig. 12 montre en développé l'association d'une capsule et d'un goulot dont les filets sont montrés en fig. 10 et 11.
  • Fig. 13 est une représentation schématique par dessus du verrouillage de la capsule sur le goulot.
  • Fig. 14 et 16 sont des vues semblables à celle de fig. 12, mais montrant des variantes du verrouillage.
  • Fig. 15 et 17 sont des vues semblables à fig. 13 et correspondant aux variantes de fig. 14 et 16.
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 exploded view of a closure device established in accordance with the invention with the capsule shown in section.
  • Fig. 2 and 3 are respectively developed views of the internal face of the shutter skirt and of the periphery of the tank neck.
  • Fig. 4 shows in section the closure system according to the invention in the assembled state.
  • Fig. 5 is a developed view of the cooperation of the threads of the capsule and the neck in the best orientation of one relative to the other.
  • Fig. 6 is a view similar to that of FIG. 4, but showing the way in which the threads of the capsule cooperate with those of the neck in the most unfavorable orientation of said capsule relative to the neck.
  • Fig. 7 shows how the capsule moves upwards thanks to its elasticity in the case of FIG. 6.
  • Fig. 8 is a developed view similar to that of FIG. 5, but showing the way in which the threads of the capsule cooperate with those of the neck in the worst orientation of the capsule corresponding to that illustrated in FIG. 7.
  • Fig. 9 is a view similar to that of FIG. 7, but showing an alternative embodiment of the sealing means.
  • Fig. 10 and 11 are views similar to those of FIG. 2 and 3, but illustrating a variant.
  • Fig. 12 shows in developed form the association of a capsule and a neck, the threads of which are shown in FIG. 10 and 11.
  • Fig. 13 is a schematic representation above the locking of the capsule on the neck.
  • Fig. 14 and 16 are views similar to that of FIG. 12, but showing variants of the lock.
  • Fig. 15 and 17 are views similar to FIG. 13 and corresponding to the variants of FIG. 14 and 16.

On a illustré en fig. 1 une capsule 1 destinée à obturer le goulot 2 d'un récipient 3.Illustrated in fig. 1 a capsule 1 intended to close the neck 2 of a container 3.

La capsule 1 comporte comme à l'accoutumée un fond 10 circulaire dont la périphérie coopère avec une jupe cylindrique 11 se dressant perpendiculairement au fond 10 et dont la face intérieure 11a est pourvue de deux filets 12 décalés à 180° l'un par rapport à l'autre, comme illustré en fig. 2.The capsule 1 comprises as usual a circular bottom 10 whose periphery cooperates with a cylindrical skirt 11 standing perpendicular to the bottom 10 and whose inner face 11 a is provided with two threads 12 offset 180 ° relative to each other to the other, as illustrated in fig. 2.

La face inférieure 10a du fond 10 est associée à un manchon tubulaire 13 dont l'arête terminale 13a est légèrement conique en direction du centre. Une telle capsule peut être réalisée par moulage sous pression d'une matière plastique appropriée élastique, notamment du polyéthylène.The underside 10a of the bottom 10 is associated with a tubular sleeve 13, the end edge 13a is slightly tapered towards the center. Such a capsule can be produced by pressure molding of a suitable elastic plastic material, in particular polyethylene.

Le goulot 2 affecte la forme d'un cylindre sur la face extérieure duquel sont ménagés quatre filets 20, comme plus particulièrement bien illustré dans le développé de fig. 3. Bien entendu, les origines des filets 20 sont décalées de 90° et ils s'étendent chacun sur un angle de 180°. Les filets 12 et ceux 20 ont leurs origines légèrement en deçà de la génératrice verticale de chacun de leurs départs à 90° et 180° et leur aboutissement s'effectue légèrement après lesdits départs. C'est ainsi que les deux filets 12 partent et aboutissent de part et d'autre des génératrices référencées 0 et 180°, tandis qu'en fig. 3, les filets 20 partent et arrivent par paire de part et d'autre des génératrices illustrant les quatre quarts de la circonférence.The neck 2 assumes the shape of a cylinder on the outer face of which are formed four threads 20, as more particularly well illustrated in the press of FIG. 3. Of course, the origins of the threads 20 are offset by 90 ° and they each extend over an angle of 180 °. The threads 12 and those 20 have their origins slightly below the vertical generator of each of their departures at 90 ° and 180 ° and their completion takes place slightly after said departures. This is how the two threads 12 start and end on either side of the generators referenced 0 and 180 °, while in FIG. 3, the threads 20 leave and arrive in pairs on either side of the generatrices illustrating four quarters of the circumference.

On conçoit aisément qu'avant l'opération de bouchage c'est-à-dire la mise en place de la capsule sur le goulot, ces deux éléments ne sont pas orientés de manière définie l'un par rapport à l'autre, de telle sorte qu'ils peuvent se trouver à n'importe quelle position angulaire.It is easily understood that before the capping operation, that is to say the placing of the capsule on the neck, these two elements are not oriented in a defined manner with respect to each other, so that they can be in any angular position.

L'opération précitée de bouchage consiste suivant l'invention à exercer sur la capsule une pression axiale en direction du récipient en vue d'encliqueter élastiquement les filets de la capsule par rapport à certains filets du goulot ou vice-versa.The abovementioned capping operation consists, according to the invention, in exerting an axial pressure on the capsule in the direction of the container in order to snap the threads of the capsule resiliently relative to certain threads of the neck or vice versa.

Bien entendu rien ne s'oppose à mettre la capsule en place sur le goulot soit dés l'origine soit lors d'un rebouchage ultérieur en lui faisant subir une rotation destinée à la visser sur les filets du goulot.Of course, there is nothing to prevent the capsule from being placed on the neck either from the start or during a subsequent filling by making it undergo a rotation intended to screw it onto the threads of the neck.

Dans l'orientation optimale illustrée en fig. 4 et 5, l'origine des deux filets 12 de la capsule correspond à celle de deux filets 20 du goulot (ceux situés aux génératrices 0 et 180°), de telle sorte que les filets 12 prennent appui sur la totalité de la longueur de deux filets 20 du goulot. Dans ces conditions, la retenue de la capsule s'effectue suivant deux arcs de cercle hélicoïdaux recouvrant la totalité de la périphérie du goulot et de la capsule.In the optimal orientation illustrated in fig. 4 and 5, the origin of the two threads 12 of the capsule corresponds to that of two threads 20 of the neck (those located at the generators 0 and 180 °), so that the threads 12 bear on the entire length of two threads 20 of the neck. Under these conditions, the retention of the capsule is carried out according to two helical arcs of circle covering the entire periphery of the neck and of the capsule.

L'étanchéité est réalisée par la coopération du manchon 13 avec un rétrécissement 21 du goulot, quel que soit le degré d'enfoncement de la capsule sur ce goulot.Sealing is achieved by the cooperation of the sleeve 13 with a narrowing 21 of the neck, regardless of the degree of depression of the capsule on this neck.

Si l'orientation de la capsule 1 est telle que le sommet de ses filets 12 arrivent en fin d'enfoncement exactement sur la crête des filets 20 du goulot, comme illustré en fig. 6, l'élasticité de la capsule 1 provoque une translation axiale de manière que ses filets 12 viennent sous les filets 20 du goulot, cette translation de la capsule étant égale à la moitié du pas P apparent du filet du goulot 2. Mais bien entendu, cette translation de la capsule s'effectuant verticalement sans aucune rotation, les filets des deux éléments du système d'obturation ne se trouvent pas à la position angulaire idéale représentée en fig. 4 et 5, mais avec un décalage des filets, comme illustré en fig. 8. Dans ce cas, l'on assiste à un maintien sur au moins la moitié de la circonférence, ce qui constitue une retenue tout à fait satisfaisante pour le cas le plus défavorable. On observe en fig. 7 que l'étanchéité est encore maintenue puisqu'il y a toujours appui du manchon 13 contre le rétrécissement 21 du goulot.If the orientation of the capsule 1 is such that the top of its threads 12 arrive at the end of insertion exactly on the crest of the threads 20 of the neck, as illustrated in FIG. 6, the elasticity of the capsule 1 causes an axial translation so that its threads 12 come under the threads 20 of the neck, this translation of the capsule being equal to half the apparent pitch P of the thread of the neck 2. But of course , this translation of the capsule being carried out vertically without any rotation, the threads of the two elements of the closure system are not in the ideal angular position shown in FIG. 4 and 5, but with an offset of the threads, as illustrated in fig. 8. In this case, there is a hold on at least half the circumference, which constitutes a perfectly satisfactory restraint for the most unfavorable case. We observe in fig. 7 that the seal is still maintained since there is still support of the sleeve 13 against the narrowing 21 of the neck.

On a enfin illustré en fig. 9 un autre moyen d'étanchéité consistant en une rondelle élastique 4 avec laquelle coopère l'arête terminale 22 du goulot, et qui assure l'étanchéité aussi bien dans la position de fig. 4 que dans celle de fig. 7. Bien entendu, lorsqu'on utilise une telle rondelle, il est nécessaire de prévoir un jeu entre l'arête 22 et la face 10a du fond 10 de la capsule 1 en fig. 9 puisque la rondelle 4 ne peut pas être comprimée complètement.Finally, there is illustrated in FIG. 9 another sealing means consisting of an elastic washer 4 with which the end edge 22 of the neck cooperates, and which ensures the sealing as well in the position of FIG. 4 as in that of FIG. 7. Of course, when using such a washer, it is necessary to provide a clearance between the edge 22 and the face 10a of the bottom 10 of the capsule 1 in FIG. 9 since the washer 4 cannot not be compressed completely.

Bien entendu, la rondelle 4 pourrait également être portée par le goulot sans sortir du domaine de l'invention.Of course, the washer 4 could also be carried by the neck without departing from the scope of the invention.

De manière préférable, on choisit pour les filets un pas réel de 8 mm de manière que le dévissage soit très rapide, le pas apparent, c'est-à-dire le rapport pas réel/nombre de filets est de quatre pour la capsule et de deux pour le goulot, étant entendu qu'on reste dans le cas où le goulot possède quatre filets et la capsule deux.Preferably, an actual pitch of 8 mm is chosen for the threads so that the unscrewing is very rapid, the apparent pitch, that is to say the ratio real pitch / number of threads is four for the capsule and two for the neck, it being understood that the case remains where the neck has four threads and the capsule two.

Dans ce cas, les trois quarts de la longueur de chaque filet 12 de la capsule sont en prise avec les filets correspondants 20 du goulot.In this case, three quarters of the length of each thread 12 of the capsule is engaged with the corresponding threads 20 of the neck.

Il va de soi que les pas des filets de la capsule et du goulot pourraient être différents, l'important étant que la capsule et/ou le goulot présente un nombre de filets différent de celui de l'autre élément.It goes without saying that the pitch of the threads of the capsule and of the neck could be different, the important thing being that the capsule and / or the neck has a number of threads different from that of the other element.

Comme illustré en fig. 10 et 11, on prévoit en variante de faire comporter à la capsule 1 et respectivement au goulot 2 plusieurs filets fins 12′, 20′.As illustrated in fig. 10 and 11, it is provided as a variant to have the capsule 1 and respectively the neck 2 several fine threads 12 ′, 20 ′.

Conformément à l'invention, le nombre de filets 12′ de la capsule 1 est supérieur de un à celui des filets 20′ du goulot 2, de telle sorte que l'engagement axial à force de la capsule 1 sur le goulot 2 s'effectue par chevauchement des filets respectifs, mais un seul des filets 12′ de la capsule s'engageant sous un des filets 20′ du goulot 2, comme illustré en fig. 12. Dans ces conditions, la capsule est retenue par un seul de ses points périphériques par rapport au goulot (fig. 13), le point d'ancrage étant référencé A en fig. 12 et 13.According to the invention, the number of threads 12 ′ of the capsule 1 is one greater than that of the threads 20 ′ of the neck 2, so that the axial engagement by force of the capsule 1 on the neck 2 s' performed by overlapping the respective threads, but only one of the threads 12 ′ of the capsule engaging under one of the threads 20 ′ of the neck 2, as illustrated in FIG. 12. Under these conditions, the capsule is retained by only one of its peripheral points relative to the neck (fig. 13), the anchoring point being referenced A in fig. 12 and 13.

Si le nombre de filets 12′ est supérieur de deux à celui des filets 20′ du goulot, deux filets de la capsule et du goulot sont en prise, comme illustré en fig. 14, suivant deux points diamétralement opposés A et B (fig. 15).If the number of threads 12 ′ is two greater than that of the threads 20 ′ of the neck, two threads of the capsule and of the neck are engaged, as illustrated in FIG. 14, along two diametrically opposite points A and B (fig. 15).

Enfin, comme illustré en fig. 16 et 17, si le nombre des filets 12′ de la capsule 1 est supérieur de trois à celui des filets 20′ du goulot 2, trois filets 12′ sont engagés avec trois filets 20 en des points A, C et D (fig. 16 et 17) régulièrement répartis à 120° les uns des autres sur la périphérie de la capsule et du goulot. Dans ces deux cas, on choisit avantageusement le nombre de filets de la bague du goulot égal à six, celui de la capsule étant bien entendu égal à huit ou neuf. On pourrait aussi choisir le nombre de filets de la bague du goulot égal à tout nombre divisible par deux et trois.Finally, as illustrated in fig. 16 and 17, if the number of threads 12 ′ of capsule 1 is three greater than that of threads 20 ′ of neck 2, three threads 12 ′ are engaged with three threads 20 at points A, C and D (figs. 16 and 17) regularly distributed at 120 ° from each other on the periphery of the capsule and the neck. In these two cases, the number of threads on the neck of the neck equal to six is advantageously chosen, that of the capsule of course being equal to eight or nine. We could also choose the number of threads on the neck ring equal to any number divisible by two and three.

L'avantage de cette variante par rapport au mode d'exécution décrit précédemment consiste dans le fait qu'on est assuré d'éviter tout déplacement élastique axial de la capsule, car dans tous les cas un, deux ou trois filets ou amorces de filet de la capsule viennent en prise avec un nombre correspondant de filets ou amorces de filet du goulot. Dans ces conditions, le moyen d'étanchéité entre la capsule et le goulot peut être un simple joint plat 4 ne présentant pas une grande capacité de compression, mais les qualités habituelles d'un tel joint.The advantage of this variant compared to the embodiment described above consists in the fact that it is ensured to avoid any axial elastic displacement of the capsule, since in all cases one, two or three threads or thread caps of the capsule engage with a corresponding number of fillets or caps of fillet from the neck. Under these conditions, the sealing means between the capsule and the neck can be a simple flat seal 4 not having a high compression capacity, but the usual qualities of such a seal.

Il va de soi que dans le cas de l'utilisation des filets 12′ et 20′ tels que décrits ci-dessus, il est également nécessaire, comme dans le mode d'éxécution précédent, que la capsule à vis soit réalisée en une matière élastique permettant sa déformation lors du chevauchement des filets et son retour à sa position initiale.It goes without saying that in the case of the use of the threads 12 ′ and 20 ′ as described above, it is also necessary, as in the previous embodiment, that the screw cap be made of a material elastic allowing its deformation during the overlapping of the threads and its return to its initial position.

Claims (7)

1. Sealing system combining a screw-on cap (1) made of resilient material and the threaded neck (2) of a container (3), characterised in that the number of threads (20, 20′) on the neck (2) and that of the threads (12, 12′) on the cap (1) are different and in that at least one (1) of these elements is associated with a tight-sealing means (13-4) which cooperates with the other element.
2. Sealing system in accordance with Claim 1, characterised in that the cap (1) is provided with a central sleeve (13) which cooperates with the neck (2) in order to ensure tight-sealing, however far the cap (1) is on the neck (2).
3. Sealing system in accordance with Claim 1, characterised in that on the bottom of the cap is arranged a tight-sealing join (4) with a high compression capacity in order to ensure tight-sealing, however far the cap (1) is on the neck (2).
4. Sealing system in accordance with Claim 1, characterised in that the cap comprises two threads and the neck four, extending over 180° and respectively offset by an angle of 180° and of 90°.
5. Sealing system in accordance with Claim 1, characterised in that in addition the pitch of the threads (12) on the cap (1) is different from that of the threads (20) on the neck (2) or vice versa.
6. Sealing system in accordance with Claim 1, characterised in that the threads (12′) on the cap (1) and those (20′) on the neck (2) are thin and numerous and in that the number of threads (12′) on the cap (1) is greater by one, two or three than that of the threads (20′) on the neck (2).
7. Sealing system in accordance with Claim 6, characterised in that the number of threads (20′) on the neck (2) is divisible by two and three.
EP19890420239 1988-07-08 1989-07-04 Closure system combining a threaded cap and the threaded neck of a container Expired - Lifetime EP0350415B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8809623A FR2633903B1 (en) 1988-07-08 1988-07-08 SHUTTERING SYSTEM COMBINING A SCREW CAPSULE AND THE THREADED NUT OF A CONTAINER
FR8809623 1988-07-08

Publications (2)

Publication Number Publication Date
EP0350415A1 EP0350415A1 (en) 1990-01-10
EP0350415B1 true EP0350415B1 (en) 1991-05-29

Family

ID=9368467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890420239 Expired - Lifetime EP0350415B1 (en) 1988-07-08 1989-07-04 Closure system combining a threaded cap and the threaded neck of a container

Country Status (4)

Country Link
EP (1) EP0350415B1 (en)
ES (1) ES2022759B3 (en)
FR (1) FR2633903B1 (en)
PT (1) PT91100B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139810A1 (en) * 1991-12-03 1993-06-09 Eppendorf - Netheler - Hinz Gmbh, 2000 Hamburg, De LID CASE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1013852C2 (en) * 1999-12-15 2001-06-18 Vinipak B V Closure cap system for packaging with spout, e.g. drinks carton, has spout or cap provided with flexible ring shaped lip
US6877625B2 (en) * 2001-10-01 2005-04-12 Matthew W. Alley Container closure member with vented and unvented closing positions
US7694835B1 (en) 2005-01-04 2010-04-13 Rexam Closures And Containers Inc. Drafted neck finish having angled thread face and closure package
MD4311C1 (en) * 2010-05-03 2015-06-30 Drilltec Patents & Technologies Corporation Protector and method for protecting a pipe thread

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA962610A (en) * 1972-03-20 1975-02-11 Sweetheart Plastics Threaded nestable container
CH612389A5 (en) * 1977-03-29 1979-07-31 Albert Obrist
JPH0426342Y2 (en) * 1986-02-06 1992-06-24
US4721220A (en) * 1986-08-29 1988-01-26 Owens-Illinois Closure Inc. Threaded container and closure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139810A1 (en) * 1991-12-03 1993-06-09 Eppendorf - Netheler - Hinz Gmbh, 2000 Hamburg, De LID CASE

Also Published As

Publication number Publication date
EP0350415A1 (en) 1990-01-10
ES2022759B3 (en) 1991-12-01
FR2633903B1 (en) 1990-10-12
PT91100A (en) 1990-02-08
FR2633903A1 (en) 1990-01-12
PT91100B (en) 1994-07-29

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