EP0899204B1 - Vial with a neck of large diameter and with a cap with tamper-evident band - Google Patents

Vial with a neck of large diameter and with a cap with tamper-evident band Download PDF

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Publication number
EP0899204B1
EP0899204B1 EP98402044A EP98402044A EP0899204B1 EP 0899204 B1 EP0899204 B1 EP 0899204B1 EP 98402044 A EP98402044 A EP 98402044A EP 98402044 A EP98402044 A EP 98402044A EP 0899204 B1 EP0899204 B1 EP 0899204B1
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EP
European Patent Office
Prior art keywords
container according
stopper
neck
angle
flask
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
Application number
EP98402044A
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German (de)
French (fr)
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EP0899204A1 (en
Inventor
Pierre Briar
Eric Julien
Jean-Philippe Grolier
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MOB
Original Assignee
Novembal Flaconnage SA
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Publication of EP0899204A1 publication Critical patent/EP0899204A1/en
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Classifications

    • 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
    • B65D41/32—Caps 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
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
    • B65D41/3409—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges

Definitions

  • the invention relates to a plug made of one-piece plastic of the type comprising a wall transverse, a side skirt provided with a thread internal, a tamper-proof ring extending the skirt side opposite the transverse wall and connected to the skirt at least by frangible connecting bridges.
  • the invention also relates to a set comprising such a stopper and a bottle whose neck comprises an external thread that can cooperate with the thread internal plug.
  • the invention finally relates to this set including a contained in the bottle.
  • WO-97/26941 discloses a container whose upper opening is provided with an inclined lip whose function is to receive a closing cap and forming a cooperating sealing surface with a cap.
  • WO-96/02431 discloses a container whose upper opening is provided with a straight lip whose function is to receive a lid closing and forming a sealing surface cooperating with a plug.
  • the object of the invention is for this type of cap and set, to improve the seal and the inviolability for bottles whose neck can present a large diameter, of the order of 4 to 20 centimeters.
  • the plug is without seal, sealing is ensured by crushing the lip by screwing the cap.
  • This bottle 1 comprises a body 2 with a bottom wall 3 and side wall 4.
  • the upper end of the side wall 4 forms the neck 5 of the bottle 1, defining an orifice end 6.
  • this body 2 is revolution around a substantially 7 axis perpendicular to the bottom wall 3.
  • this body 2 can be, in cross-section perpendicular to the axis 7, of square, rectangular contour, oval, polygonal, or any other contour related to conditions of transport, of sale for example.
  • the body 2 is, in the embodiment represented, substantially cylindrical, of axis 7.
  • the body 2 is frustoconical or has one or several areas of smaller diameter.
  • the bottle 1 is, in one embodiment, made of high density polyethylene by extrusion blowing.
  • extrusion blow molding appeared in France in the 1950s for the manufacture of plasticized PVC bottles for packaging detergents and cleaning products, is to extrude a parison of hot and soft synthetic material to inside a mold in at least two pieces, then to blow air into said parison, through the opening of the mold corresponding to the neck of the container, to press the parison onto the surfaces of the mold.
  • the bottle 1 can be elaborated by extrusion blowing a material selected from the group comprising polyvinyl chloride, possibly bioriented, the polyolefins such as low density polyethylene, high density polyethylene or low polyethylene blend and high density, cellulose triacetate, polymers acrylics, polypropylene and its copolymers, polycarbonate, bi or tripolymer complexes, polyethylene polypropylene mixtures.
  • a material selected from the group comprising polyvinyl chloride, possibly bioriented, the polyolefins such as low density polyethylene, high density polyethylene or low polyethylene blend and high density, cellulose triacetate, polymers acrylics, polypropylene and its copolymers, polycarbonate, bi or tripolymer complexes, polyethylene polypropylene mixtures.
  • High and low density polyethylene blend can be chosen for example when the body 2 must have some flexibility.
  • Polyethylene of great chemical inertia and without extractible additives may be selected by example when the body 2 must contain food foodstuffs or detergents.
  • Polypropylene possibly biétting and rendering so transparent can be chosen when the body 2 must resist sterilization.
  • Cellulose triacetate may be considered when the bottle is intended to contain products containing oil or essences.
  • Acrylic polymers very impermeable to oxygen can be considered for body packaging fat, possibly food.
  • Polycarbonate could be considered in certain specific applications, particularly in hospitable, for sterilizable vials.
  • polyamide / polyolefin complexes will be to consider for medical applications.
  • the polypropylene / ethylene copolymer complexes and vinyl acetate, the complexes in which one of the constituent is polyvinylidene chloride can be chosen when the vial has to be both impervious to gas, water vapor and present a quite good mechanical resistance.
  • the neck 5 of the bottle 1 has an external thread 8.
  • This thread 8 comprises, in the embodiment shown, three threads 9a, 9b and 9c extending over a ring height h 1 .
  • the start of the nets h 2 is, in the embodiment shown, substantially equal to the thickness h 3 of the threads 9a, 9b, 9c and slightly greater than the pitch h 4 .
  • the difference between the thread diameter D 1 and the diameter at the bottom of the thread D 2 is slightly greater than the thickness e 1 of the neck 5 of the bottle 1.
  • the unclogging diameter D 3 is substantially smaller than the diameter at the bottom of the net D 2 .
  • Col 5 has indeed, in its extreme part upper, an inclined lip 10 disposed between the drinking 11 of the neck 5 and the peripheral surface substantially vertical 12 located above the net 9a.
  • the first face 13 is inclined by about 15 ° relative to the plane transversal P.
  • Connection leaves 15, 16 thus connect the first face 13 to the second face 14 of the lip 10 and the second face 14 to the vertical peripheral surface 12 of the ring, respectively.
  • connection holidays 15, 16 allow to reduce stress concentrations and the effect of residual stresses.
  • the threads 9a, 9b, 9c are inclined at an angle ⁇ 3 of between 5 and 15 ° with respect to the plane P.
  • the height h 5 of the second thread surface 18 is of the order of one tenth of the pitch h 4 .
  • the nets extend 300 ° on the periphery of the col 5, in the embodiment shown.
  • the nets are interrupted in the joint plane of the neck, in order to avoid any burrs of material plastic do not interfere with the screwing of the plug, this to take account of possible wear and aging of the extrusion blow mold.
  • the ring of height h 1 is disposed above a shoulder 20.
  • This shoulder extends over a height h 6 .
  • Beneath and contiguous to this shoulder 20 is a reservation zone 21 of height h 7 .
  • This reservation zone 21 has an outside diameter D 5 slightly greater than the outside diameter D 4 of the shoulder 20.
  • Reservations or notches 22 define notches of inviolability cooperating with projections of the tamper-evident band of the cap or associated cape as well that it will be described later.
  • the outside diameter D 6 defined by this side wall is slightly greater than the outside diameter D 5 of the zone 21.
  • no represented, three or four notches are arranged in zone 21, regularly distributed or not.
  • the notches 22 are delimited by a bottom wall 23 defined by a diameter D 7 between the thread diameter D 1 and the diameter at the bottom of the net D 2 .
  • Projections 24 separate the notches 22 each others.
  • projections extend in a transverse plane, on an angular sector of the order of 3 to 20 °.
  • each projection 24 defines the maximum outside diameter D 5 of the zone 21.
  • Each projection 24 is limited, laterally, by two substantially flat surfaces 26 and 27 inclined relative to a tangential vertical plane T of an angle ⁇ 6 between 30 ° and 60 °.
  • the angle ⁇ 6 is of the order of 45 °.
  • connection radius 28 between the surface rear 26 of each protrusion 24 and the lateral surface external 25 is smaller than the connection radius 29 between the front surface 27 of each projection 24 and the external lateral surface 25.
  • the radius of connection between the surface rear 26 of each projection 24 and the bottom wall 23 is smaller than the radius of connection between the surface before each protrusion and the outer lateral surface 25.
  • each projection 24 is used with reference to the direction of screwing V cap on the collar.
  • the sizing of bottle 1 depends naturally the amount of liquid, pasty or powdery product which one wishes to condition.
  • the cap or cap 30 is now described.
  • the transverse bottom wall 31 has a thinned central portion 36.
  • This thinned portion 36 has a diameter and a such that the flasks are easily stackable and storable.
  • the side skirt 32 has streaks 37 or fluted on its outer surface, making it easier to unscrew the cap 30.
  • the internal thread 33 is of a shape complementary to the external thread 8 of the neck 5 of the bottle 1.
  • This internal thread 33 has three threads 38a, 38b, 38c, extending over 285 °.
  • the threads 38a, 38b, 38c are interrupted.
  • the outer surface of the side skirt 32 is slightly frustoconical, its diameter decreasing from the bottom to the top.
  • the inner surface of the skirt is, in turn, substantially vertical, between the threads 38a, 38b, 38c.
  • the threads 38a, 38b, 38c define contours, in longitudinal section, symmetrical with respect to the plane P, the angles ⁇ 7 ⁇ 8 of inclination of the surfaces 39, 41 with respect to this plane being About 20 °.
  • a shoulder 42 is provided at the base of the skirt, below the threads 38a, 38b, 38c, so that the thickness e 2 of the lower end of the skirt is substantially equal to the thickness e 3 of the skirt , between the nets.
  • This shoulder facilitates the guiding of the plug during of its establishment and is one of the means to avoid overplay.
  • frangible bridges 35 connecting the band of tamper 34 to the side skirt 32 are triangular conical.
  • Figure 7 shows that the cross-section high bridges, in their association zone with the edge lower part of the skirt 32, is of homothetic surface and lower than the low cross section of these bridges, in their zone of association with the tamper-evident band 34.
  • this cross section, substantially triangular, bridges 35 is surface decreasing from base 45 to top 46 bridges 35.
  • each bridge 35 is limited, towards inside the cap, by a surface substantially vertical 47 of trapezoidal contour, and is limited to the outside of the cap, by an inclined surface 48.
  • the inclined surface 48 is such that each bridge 35 has a symmetry with respect to a radial plane R.
  • the base surface 45 of the bridges 35 extends over a Thicker than the tamper band 34.
  • Frangible bridges can be chosen from different section, in other embodiments.
  • These bridges can for example be cylindrical, prisms with square, rectangular or triangular base.
  • the frangible bridges 35 are arranged between support areas 49.
  • the bearing zones 49 thus make it possible to minimize the size of bridges 35, to bring a comfort of use by lowering the effort required to break these bridges.
  • the conical triangular shape of bridges 35 is calculated to avoid bias unscrewing, the slope of the inclined surface 48 facilitates the priming of break in the direction of unscrewing.
  • Frangible bridges 50 of rectangular section are disposed between the bearing surface 49 and the face lower 51 of the skirt 32.
  • the tamper-evident ring has, protruding internal, notches 52 coming to lock in the notches 22 neck of the bottle 1 at the beginning of the first unscrewing.
  • These notches 52 have a rear face 60 and a front face 61.
  • the rear face 60 is substantially radial and defines an angle ⁇ 1 of the order of zero to a few degrees with respect to the radial direction.
  • the front face 61 is inclined at an angle ⁇ 2 with respect to the radial direction, ⁇ 2 being of the order of 50 °.
  • each notch 52 When putting the stopper on the bottle, on the packaging line, the front surface 61 of each notch 52 can slide on the rear surface 26 of the corresponding projection 24 of the neck (screwing direction V).
  • the ring 34 remaining on the neck 5 can not be accidentally mix with the contents of the bottle.
  • the ring remains associated with the bottle, even while shaking the bottle, especially because of the contact between the base of the shoulder 20 and the upper surface 63 of each step 52.
  • the cap can be made by injection.
  • the sizing of the cap depends of course from that of the bottle 1.
  • the entire bottle 1-cap 30 has improved tamper and sealing characteristics compared with the known sets of the prior art, for vials whose neck may have a large diameter, of the order of 4 to 20 centimeters.
  • a lid not shown, can be sealed on the neck 5, thus blocking the end orifice 6.
  • Sealing can be obtained by gluing, induction, thermal welding, ultrasound or high frequencies, or equivalent.
  • the lid may be tearable and / or peelable.
  • the lid is repositionable.
  • the lid may comprise a tongue facilitating its removal or a line of smaller thickness facilitating its routing.
  • the cover may be made of a material mono or multilayer polymer, or composite polymer / metals to ensure for example a good sealing, in particular gas and water vapor, multilayer paper cardboard.
  • the lid is in aluminum.
  • This seal is obtained in particular by crushing of the lip 10 in contact with the projection annular inner 65 of the cap, disposed near the bottom wall 31 at a distance b thereof.
  • the installation of the cap 30 on the bottle 1 can be manual but is easily mechanizable.
  • the cap can be screwed or clipped thanks to the angle of the nets and the rigidity of the neck 5.
  • the slope 64 at the base of each notch 52 of the ring inviolability facilitates the passage on the shoulder 20.
  • This slope 64 is inclined by an angle ⁇ 3 of the order of 35 °, in the embodiment shown.
  • Screwing third of turn and calibration of bridges 35 prevent screwing and unscrewing of bias, even for large plug and neck diameters.
  • the side skirt 32 is, in the embodiment represented, in the vertical extension of the wall side 4 of the body 2, which improves the aesthetics of overall compared to existing products.
  • the body alignment 2 cape 30 can be obtained, in an embodiment, by implementing a mold to retractable cores for making cape 30.

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

Abstract

The container has a large-diameter neck (5), typically between 4 and 20 cm, and a lid with a skirt having an internal thread matching that (9a,9b,9c) on the container neck. The neck has a zone (21) with a series of notches (22) separated by projections (24), and the lid has a tamperproof ring which is connected to its skirt by bridges that are broken when the ring is first removed to allow the lid to be opened. The projections and notches on the container neck engage with teeth on the inside of the tamperproof ring and fix it in position so that the bridges break when the lid is unscrewed. In addition, the rim of the container has an inclined lip to receive a seal which has to be opened on first use.

Description

L'invention concerne un bouchon en matière plastique monobloc du type comprenant une paroi transversale, une jupe latérale pourvue d'un filetage interne, une bague d'inviolabilité prolongeant la jupe latérale à l'opposé de la paroi transversale et reliée à la jupe au moins par des ponts de liaison frangibles.The invention relates to a plug made of one-piece plastic of the type comprising a wall transverse, a side skirt provided with a thread internal, a tamper-proof ring extending the skirt side opposite the transverse wall and connected to the skirt at least by frangible connecting bridges.

L'invention concerne également un ensemble comprenant un tel bouchon et un flacon dont le col comporte un filetage externe pouvant coopérer avec le filetage interne du bouchon.The invention also relates to a set comprising such a stopper and a bottle whose neck comprises an external thread that can cooperate with the thread internal plug.

L'invention concerne enfin cet ensemble incluant un contenu dans le flacon.The invention finally relates to this set including a contained in the bottle.

On connaít déjà des bouchons et des ensembles bouchon-flacon tels que ceux mentionnés ci-dessus.We already know plugs and sets cork-bottle such as those mentioned above.

Le document WO-97/26941 décrit un récipient dont l'ouverture supérieure est pourvue d'une lèvre inclinée dont la fonction est de recevoir un opercule de fermeture et de former une portée d'étanchéité coopérant avec un bouchon.WO-97/26941 discloses a container whose upper opening is provided with an inclined lip whose function is to receive a closing cap and forming a cooperating sealing surface with a cap.

Le document WO-96/02431 décrit un récipient dont l'ouverture supérieure est pourvue d'une lèvre droite dont la fonction est de recevoir un opercule de fermeture et de former une portée d'étanchéité coopérant avec un bouchon.WO-96/02431 discloses a container whose upper opening is provided with a straight lip whose function is to receive a lid closing and forming a sealing surface cooperating with a plug.

L'invention a pour objectif, pour ce type de bouchon et d'ensemble, d'améliorer l'étanchéité et l'inviolabilité pour des flacons dont le col peut présenter un grand diamètre, de l'ordre de 4 à 20 centimètres.The object of the invention is for this type of cap and set, to improve the seal and the inviolability for bottles whose neck can present a large diameter, of the order of 4 to 20 centimeters.

L'amélioration de l'étanchéité et de l'inviolabilité est requise avec, simultanément, une réalisation commodément industrialisable et susceptible de garder son efficacité malgré les variations dimensionnelles des cols des récipients du fait de la technique de transformation utilisée, par exemple l'extrusion soufflage.Improved sealing and inviolability is required with, simultaneously, a conveniently industrializable and capable of keep its efficiency despite dimensional variations collars of containers because of the technique of transformation used, for example extrusion blow molding.

A cette fin, l'invention se rapporte à un contenant de type comprenant :

  • un flacon présentant un col fileté définissant une ouverture d'extrémité de grand diamètre, typiquement compris entre 4 et 20 centimètres ;
  • un bouchon dont la jupe latérale présente des filets complémentaires aux filets du col du flacon, ledit flacon et ledit bouchon étant réalisés en matière plastique,
  • le col du flacon comporte une zone à encoches, ces encoches étant séparées par des saillies ;
  • le bouchon comporte une bague d'inviolabilité reliée à la jupe par des ponts frangibles, ladite bague étant pourvue d'une pluralité de crans situés et dirigés vers l'extérieur de la bague ;
   les encoches et les saillies du col coopérant avec les crans de la bague de manière à interférer lors du premier dévissage du bouchon, tout en permettant la rupture des ponts,
   l'ouverture d'extrémité du flacon étant délimitée par une lèvre inclinée par rapport à un plan transversal P au bouchon,
   cette lèvre ayant pour fonction, en premier lieu, de recevoir et d'assurer la solidarisation d'un opercule de fermeture originel du flacon et, en deuxième lieu, l'opercule ayant été enlevé au premier vissage du flacon, de former une portée d'étanchéité coopérant avec le bouchon, la lèvre comportant, en partant du bord de l'orifice d'extrémité:
  • une première face, inclinée d'un premier angle par rapport au plan transversal;
  • une deuxième face, inclinée d'un deuxième angle supérieur au premier angle, par rapport au plan transversal.
To this end, the invention relates to a container of the type comprising:
  • a bottle having a threaded neck defining an end opening of large diameter, typically between 4 and 20 centimeters;
  • a stopper whose lateral skirt has threads complementary to the threads of the neck of the bottle, said bottle and said stopper being made of plastic,
  • the neck of the bottle has a notched zone, these notches being separated by projections;
  • the cap comprises a tamper evident ring connected to the skirt by frangible bridges, said ring being provided with a plurality of notches located and directed outwardly of the ring;
the notches and projections of the collar cooperating with the notches of the ring so as to interfere during the first unscrewing of the plug, while allowing the bridges to break,
the end opening of the bottle being delimited by a lip inclined relative to a transverse plane P to the stopper,
this lip having the function, in the first place, to receive and ensure the joining of an original closure cap of the bottle and, secondly, the cap having been removed at the first screwing of the bottle, to form a scope of sealing cooperating with the stopper, the lip comprising, starting from the edge of the end orifice:
  • a first face, inclined at a first angle relative to the transverse plane;
  • a second face, inclined at a second angle greater than the first angle, relative to the transverse plane.

Dans un mode de réalisation, le bouchon est dépourvu de joint d'étanchéité, l'étanchéité étant assurée par l'écrasement de la lèvre par vissage du bouchon.In one embodiment, the plug is without seal, sealing is ensured by crushing the lip by screwing the cap.

D'autres objets et avantages de l'invention apparaítront plus clairement au cours de la description suivante d'un mode de réalisation, description qui va être faite en se référant aux dessins annexés dans lesquels :

  • la figure 1 est une vue latérale d'un ensemble bouchon-flacon, avant première ouverture ;
  • la figure 2 est une vue latérale de la partie extrême supérieure du flacon ;
  • la figure 3 est une vue montrant, en partie droite, une coupe selon la ligne III-III de la figure 2 et, en partie gauche, une vue de dessus selon la flèche F de la figure 2 ;
  • la figure 4 est une vue du cran d'inviolabilité suivant le plan de joint IV-IV de la figure 3 ;
  • la figure 5 est une vue en coupe longitudinale du bouchon ;
  • la figure 6 est une vue partielle en coupe transversale selon la ligne VI-VI de la figure 5 ;
  • la figure 7 est une vue en coupe transversale selon la ligne VII-VII de la figure 5 ;
  • la figure 8 est une vue de détail d'une partie de la figure 7 ;
  • la figure 9 est une vue de détail de la figure 6 ;
  • la figure 10 est une vue en coupe selon la ligne X-X de la figure 8.
Other objects and advantages of the invention will appear more clearly in the following description of an embodiment, a description which will be made with reference to the appended drawings in which:
  • Figure 1 is a side view of a cap-bottle assembly, before first opening;
  • Figure 2 is a side view of the upper end portion of the vial;
  • Figure 3 is a view showing, in the right part, a section along the line III-III of Figure 2 and, in the left part, a top view along the arrow F of Figure 2;
  • Figure 4 is a view of the inviolability notch along the joint plane IV-IV of Figure 3;
  • Figure 5 is a longitudinal sectional view of the cap;
  • Figure 6 is a partial cross-sectional view along the line VI-VI of Figure 5;
  • Figure 7 is a cross-sectional view along the line VII-VII of Figure 5;
  • Figure 8 is a detail view of a portion of Figure 7;
  • Figure 9 is a detail view of Figure 6;
  • Figure 10 is a sectional view along line XX of Figure 8.

Dans ce texte, sauf mention contraire, les termes "supérieur", "inférieur", "haut", "bas", "latéral", "interne", "externe", sont utilisés en référence à un point situé au milieu du flacon.In this text, unless otherwise indicated, the terms "upper", "lower", "up", "down", "lateral", "internal", "external", are used with reference to a point located in the middle of the bottle.

Ce flacon 1 comporte un corps 2 à paroi de fond 3 et paroi latérale 4. This bottle 1 comprises a body 2 with a bottom wall 3 and side wall 4.

La partie extrême supérieure de la paroi latérale 4 forme le col 5 du flacon 1, définissant un orifice d'extrémité 6.The upper end of the side wall 4 forms the neck 5 of the bottle 1, defining an orifice end 6.

Dans le mode de réalisation représenté, ce corps 2 est de révolution autour d'un axe 7 sensiblement perpendiculaire à la paroi de fond 3.In the embodiment shown, this body 2 is revolution around a substantially 7 axis perpendicular to the bottom wall 3.

Dans d'autres modes de réalisation, non représentés, ce corps 2 peut être, en section transversale perpendiculaire à l'axe 7, de contour carré, rectangulaire, ovale, polygonal, ou de tout autre contour lié aux conditions de transport, de vente par exemple.In other embodiments, no represented, this body 2 can be, in cross-section perpendicular to the axis 7, of square, rectangular contour, oval, polygonal, or any other contour related to conditions of transport, of sale for example.

Le corps 2 est, dans le mode de réalisation représenté, sensiblement cylindrique, d'axe 7.The body 2 is, in the embodiment represented, substantially cylindrical, of axis 7.

Dans d'autres modes de réalisation, non représentés, le corps 2 est tronconique ou comporte une ou plusieurs zones de diamètre plus faible.In other embodiments, no represented, the body 2 is frustoconical or has one or several areas of smaller diameter.

Le flacon 1 est, dans un mode de réalisation, élaboré en polyéthylène haute densité par extrusion soufflage.The bottle 1 is, in one embodiment, made of high density polyethylene by extrusion blowing.

On rappelle que l'extrusion soufflage, apparue en France dans les années 1950 pour la fabrication de bouteilles en PVC plastifié pour le conditionnement de détergents et de produits d'entretien, consiste à extruder une paraison de matière synthétique chaude et molle à l'intérieur d'un moule en au moins deux pièces, puis à souffler de l'air dans ladite paraison, à travers l'ouverture du moule correspondant au goulot du récipient, pour plaquer la paraison sur les surfaces du moule. It is recalled that extrusion blow molding, appeared in France in the 1950s for the manufacture of plasticized PVC bottles for packaging detergents and cleaning products, is to extrude a parison of hot and soft synthetic material to inside a mold in at least two pieces, then to blow air into said parison, through the opening of the mold corresponding to the neck of the container, to press the parison onto the surfaces of the mold.

Le flacon 1 peut être élaboré par extrusion soufflage en un matériau choisi parmi le groupe comprenant le polychlorure de vinyle, éventuellement biorienté, les polyoléfines telles que polyéthylène basse densité, polyéthylène haute densité ou mélange de polyéthylène basse et haute densité, le triacétate de cellulose, les polymères acryliques, le polypropylène et ses copolymères, le polycarbonate, les complexes bi ou tripolymères, les mélanges polyéthylènes polypropylènes.The bottle 1 can be elaborated by extrusion blowing a material selected from the group comprising polyvinyl chloride, possibly bioriented, the polyolefins such as low density polyethylene, high density polyethylene or low polyethylene blend and high density, cellulose triacetate, polymers acrylics, polypropylene and its copolymers, polycarbonate, bi or tripolymer complexes, polyethylene polypropylene mixtures.

Le mélange polyéthylène haute et basse densité pourra être choisi par exemple lorsque le corps 2 doit présenter une certaine souplesse.High and low density polyethylene blend can be chosen for example when the body 2 must have some flexibility.

Le polyéthylène, de grande inertie chimique et dépourvu d'additifs extractibles pourra être choisi par exemple lorsque le corps 2 doit contenir des denrées alimentaires ou des détergents.Polyethylene, of great chemical inertia and without extractible additives may be selected by example when the body 2 must contain food foodstuffs or detergents.

Le polypropylène, éventuellement biétiré et rendu ainsi transparent pourra être choisi lorsque le corps 2 doit résister à la stérilisation.Polypropylene, possibly biétiré and rendering so transparent can be chosen when the body 2 must resist sterilization.

Le triacétate de cellulose pourra être envisagé lorsque le flacon est destiné à contenir des produits renfermant de l'huile ou des essences.Cellulose triacetate may be considered when the bottle is intended to contain products containing oil or essences.

Les polymères acryliques, très imperméables à l'oxygène pourront être envisagés pour l'emballage de corps gras, éventuellement alimentaires. Acrylic polymers, very impermeable to oxygen can be considered for body packaging fat, possibly food.

Le polycarbonate pourra être envisagé dans certaines applications spécifiques, notamment en milieu hospitalier, pour des flacons stérilisables.Polycarbonate could be considered in certain specific applications, particularly in hospitable, for sterilizable vials.

Parmi les complexes bi ou tripolymères envisageables, les complexes polyamides/polyoléfines seront à considérer pour les applications médicales.Among the bi or tripolymer complexes polyamide / polyolefin complexes will be to consider for medical applications.

Les complexes polypropylène/copolymères éthylène et acétate de vinyle, les complexes dans lesquels un des constituant est le chlorure de polyvinylidène peuvent être choisis lorsque le flacon doit être à la fois assez imperméable au gaz, à la vapeur d'eau et présenter une assez bonne résistance mécanique.The polypropylene / ethylene copolymer complexes and vinyl acetate, the complexes in which one of the constituent is polyvinylidene chloride can be chosen when the vial has to be both impervious to gas, water vapor and present a quite good mechanical resistance.

Le col 5 du flacon 1 présente un filetage externe 8.The neck 5 of the bottle 1 has an external thread 8.

Ce filetage 8 comprend, dans le mode de réalisation représenté, trois filets 9a, 9b et 9c s'étendant sur une hauteur de bague h1.This thread 8 comprises, in the embodiment shown, three threads 9a, 9b and 9c extending over a ring height h 1 .

Le départ des filets h2 est, dans le mode de réalisation représenté, sensiblement égal à l'épaisseur h3 des filets 9a, 9b, 9c et légèrement supérieur au pas h4.The start of the nets h 2 is, in the embodiment shown, substantially equal to the thickness h 3 of the threads 9a, 9b, 9c and slightly greater than the pitch h 4 .

La différence entre le diamètre sur filet D1 et le diamètre en fond de filet D2 est légèrement supérieure à l'épaisseur e1 du col 5 du flacon 1.The difference between the thread diameter D 1 and the diameter at the bottom of the thread D 2 is slightly greater than the thickness e 1 of the neck 5 of the bottle 1.

Le diamètre de débouchage D3 est sensiblement inférieur au diamètre en fond de filet D2. The unclogging diameter D 3 is substantially smaller than the diameter at the bottom of the net D 2 .

Le col 5 présente en effet, à sa partie extrême supérieure, une lèvre inclinée 10 disposée entre le buvant 11 du col 5 et la surface périphérique sensiblement verticale 12 située au-dessus du filet 9a.Col 5 has indeed, in its extreme part upper, an inclined lip 10 disposed between the drinking 11 of the neck 5 and the peripheral surface substantially vertical 12 located above the net 9a.

La structure de cette lèvre inclinée 10, telle que représentée sur les figures, peut être décrite comme suit.The structure of this inclined lip 10, as shown in the figures, may be described as follows.

Partant du bord de l'orifice d'extrémité 6, la lèvre inclinée 10 comporte :

  • une première face 13, inclinée d'un angle α1 compris entre 1 et 20° par rapport au plan transversal P,
  • une deuxième face 14, inclinée d'un angle α2 compris entre 40 et 60° par rapport au plan transversal P.
Starting from the edge of the end orifice 6, the inclined lip 10 comprises:
  • a first face 13, inclined at an angle α 1 between 1 and 20 ° relative to the transverse plane P,
  • a second face 14, inclined at an angle α 2 between 40 and 60 ° with respect to the transverse plane P.

Dans le mode de réalisation représenté, la première face 13 est inclinée de 15° environ par rapport au plan transversal P.In the embodiment shown, the first face 13 is inclined by about 15 ° relative to the plane transversal P.

Pour assurer une bonne résistance mécanique et compte-tenu des particularités du procédé de fabrication, une attention particulière a été portée aux raccordements entre les différentes sections du flacon 1.To ensure a good mechanical resistance and given the particularities of the manufacturing process, special attention has been paid to the connections between the different sections of the bottle 1.

Des congés de raccordement 15, 16 relient ainsi la première face 13 à la deuxième face 14 de la lèvre 10 et la deuxième face 14 à la surface périphérique verticale 12 de la bague, respectivement.Connection leaves 15, 16 thus connect the first face 13 to the second face 14 of the lip 10 and the second face 14 to the vertical peripheral surface 12 of the ring, respectively.

Ces congés de raccordement 15, 16 permettent d'atténuer les concentrations de contrainte et l'effet des contraintes résiduelles. These connection holidays 15, 16 allow to reduce stress concentrations and the effect of residual stresses.

Les filets 9a, 9b, 9c sont inclinés d'un angle α3 compris entre 5 et 15° par rapport au plan P.The threads 9a, 9b, 9c are inclined at an angle α 3 of between 5 and 15 ° with respect to the plane P.

Chaque filet 9a, 9b, 9c définit, en coupe longitudinale perpendiculaire au plan P, du haut vers le bas :

  • une première surface de filet 17, inclinée d'un angle α4 de l'ordre de 45° par rapport au plan P ;
  • une deuxième surface de filet 18, sensiblement verticale ;
  • une troisième surface de filet 19, inclinée d'un angle α5 de l'ordre de 10° par rapport au plan P.
Each thread 9a, 9b, 9c defines, in longitudinal section perpendicular to the plane P, from top to bottom:
  • a first thread surface 17, inclined at an angle α 4 of the order of 45 ° with respect to the plane P;
  • a second thread surface 18, substantially vertical;
  • a third thread surface 19, inclined at an angle α 5 of the order of 10 ° relative to the plane P.

La hauteur h5 de la deuxième surface de filet 18 est de l'ordre du dixième du pas h4.The height h 5 of the second thread surface 18 is of the order of one tenth of the pitch h 4 .

Les filets s'étendent sur 300° sur la périphérie du col 5, dans le mode de réalisation représenté.The nets extend 300 ° on the periphery of the col 5, in the embodiment shown.

Dans un autre mode de réalisation, non représenté, les filets sont interrompus dans le plan de joint du goulot, afin d'éviter que d'éventuelles bavures de matière plastique ne viennent gêner le vissage du bouchon, ceci afin de tenir compte de l'usure éventuelle et du vieillissement du moule d'extrusion soufflage.In another embodiment, not shown, the nets are interrupted in the joint plane of the neck, in order to avoid any burrs of material plastic do not interfere with the screwing of the plug, this to take account of possible wear and aging of the extrusion blow mold.

La bague de hauteur h1 est disposée au-dessus d'un épaulement 20.The ring of height h 1 is disposed above a shoulder 20.

Cet épaulement, de diamètre extérieur D4, supérieur au diamètre sur filet D1, s'étend sur une hauteur h6.This shoulder, of outside diameter D 4 , greater than the diameter on thread D 1 , extends over a height h 6 .

En dessous et contigu à cet épaulement 20, est disposée une zone à réservations 21, de hauteur h7. Beneath and contiguous to this shoulder 20 is a reservation zone 21 of height h 7 .

Cette zone à réservation 21 présente un diamètre extérieur D5 légèrement supérieur au diamètre extérieur D4 de l'épaulement 20.This reservation zone 21 has an outside diameter D 5 slightly greater than the outside diameter D 4 of the shoulder 20.

Des réservations ou encoches 22 définissent des crans d'inviolabilité coopérant avec des saillies de la bande d'inviolabilité du bouchon ou cape associée ainsi qu'il sera décrit par la suite.Reservations or notches 22 define notches of inviolability cooperating with projections of the tamper-evident band of the cap or associated cape as well that it will be described later.

En dessous et contigu à la zone de réservation 21 se trouve la paroi latérale 4 du corps 2.Below and contiguous to the reservation area 21 is the side wall 4 of the body 2.

Le diamètre extérieur D6 défini par cette paroi latérale est légèrement supérieur au diamètre extérieur D5 de la zone 21.The outside diameter D 6 defined by this side wall is slightly greater than the outside diameter D 5 of the zone 21.

Ainsi qu'il a été dit précédemment, des congés de raccordement entre l'épaulement 20, la zone 21 et la paroi latérale 4 respectivement limitent la valeur du coefficient de concentration de contraintes et atténuent l'effet des contraintes résiduelles.As has been said previously, holidays of connection between the shoulder 20, the zone 21 and the wall 4 respectively limit the value of the coefficient of stress concentration and mitigate the effect of residual stresses.

La géométrie des encoches 22 apparaít sur les figures 3 et 4 notamment.The geometry of the notches 22 appears on the Figures 3 and 4 in particular.

Dans le mode de réalisation représenté, six encoches 22 sont régulièrement réparties sur la périphérie du col 5, dans la zone 21.In the embodiment shown, six notches 22 are evenly distributed on the periphery of collar 5, in zone 21.

Dans d'autres modes de réalisation, non représentés, trois ou quatre encoches sont disposées dans la zone 21, régulièrement réparties ou non. In other embodiments, no represented, three or four notches are arranged in zone 21, regularly distributed or not.

Les encoches 22 sont délimitées par une paroi de fond 23 définie par un diamètre D7 compris entre le diamètre sur filet D1 et le diamètre en fond de filet D2.The notches 22 are delimited by a bottom wall 23 defined by a diameter D 7 between the thread diameter D 1 and the diameter at the bottom of the net D 2 .

Des saillies 24 séparent les encoches 22 les unes des autres.Projections 24 separate the notches 22 each others.

Ces saillies s'étendent, dans un plan transversal, sur un secteur angulaire de l'ordre de 3 à 20°.These projections extend in a transverse plane, on an angular sector of the order of 3 to 20 °.

La surface latérale externe 25 de chaque saillie 24 définit le diamètre extérieur maximal D5 de la zone 21.The outer lateral surface 25 of each projection 24 defines the maximum outside diameter D 5 of the zone 21.

Chaque saillie 24 est limitée, latéralement, par deux surfaces sensiblement planes 26 et 27 inclinées par rapport à un plan vertical tangentiel T d'un angle α6 compris entre 30° et 60°.Each projection 24 is limited, laterally, by two substantially flat surfaces 26 and 27 inclined relative to a tangential vertical plane T of an angle α 6 between 30 ° and 60 °.

Dans le mode de réalisation représenté, l'angle α6 est de l'ordre de 45°.In the embodiment shown, the angle α 6 is of the order of 45 °.

Le rayon de raccordement 28 entre la surface arrière 26 de chaque saillie 24 et la surface latérale externe 25 est plus petit que le rayon de raccordement 29 entre la surface avant 27 de chaque saillie 24 et la surface latérale externe 25.The connection radius 28 between the surface rear 26 of each protrusion 24 and the lateral surface external 25 is smaller than the connection radius 29 between the front surface 27 of each projection 24 and the external lateral surface 25.

De même, le rayon de raccordement entre la surface arrière 26 de chaque saillie 24 et la paroi de fond 23 est plus petit que le rayon de raccordement entre la surface avant de chaque saillie et la surface latérale externe 25.Similarly, the radius of connection between the surface rear 26 of each projection 24 and the bottom wall 23 is smaller than the radius of connection between the surface before each protrusion and the outer lateral surface 25.

L'expression surface "arrière" 26 de chaque saillie 24 est utilisée ici en référence au sens de vissage du bouchon sur le col ainsi qu'il sera expliqué plus complètement ultérieurement.The expression "rear" surface 26 of each projection 24 is used here with reference to the screwing direction of the cap on the collar so it will be explained more completely later.

De même, l'expression surface "avant" 27 de chaque saillie 24 est utilisée en référence au sens de vissage V du bouchon sur le col.Similarly, the expression "before" surface 27 of each projection 24 is used with reference to the direction of screwing V cap on the collar.

Le dimensionnement du flacon 1 dépend naturellement de la quantité de produit liquide, pâteux ou pulvérulent que l'on souhaite conditionner.The sizing of bottle 1 depends naturally the amount of liquid, pasty or powdery product which one wishes to condition.

A titre indicatif, les dimensions suivantes sont données, pour un mode de réalisation :

  • diamètre de débouchage D3 : 80 mm ;
  • diamètre au congé de raccordement D15 : 89 mm ;
  • diamètre au congé de raccordement D16 : 91 mm (égal au diamètre en fond de filet D2) ;
  • diamètre sur filet D1 : 94,1 mm ;
  • diamètre sur épaulement 20 D4 : 96,2 mm ;
  • diamètre externe D6 de la paroi latérale 4 : 99 mm ;
  • diamètre D7 en fond d'encoches 22 dans la zone 21 : 92,8 mm ;
  • diamètre extérieur D5 de la zone 21 : 97,2 mm ;
  • hauteur de la zone 21, h7 : 7,3 mm ;
  • hauteur de l'épaulement 20, h6 : 2,2 mm ;
  • hauteur h8 correspondant à la première face 13 de la lèvre 10 : 0,92 mm ;
  • hauteur h9 correspondant à la deuxième face 14 de la lèvre 10 : 1,5 mm ;
  • pas h4 : 12 mm ;
  • trois filets s'étendant sur 300° ;
  • hauteur de la face verticale des filets : 1 mm ;
  • angle α1 : 15° ;
  • angle α2 : 45° ;
  • angle α3 : 10°.
As an indication, the following dimensions are given, for one embodiment:
  • unclogging diameter D 3 : 80 mm;
  • diameter at the connection fillet D 15 : 89 mm;
  • diameter at the connection fillet D 16 : 91 mm (equal to the diameter at the bottom of the net D 2 );
  • diameter on thread D 1 : 94.1 mm;
  • shoulder diameter 20 D 4 : 96.2 mm;
  • outer diameter D 6 of the side wall 4: 99 mm;
  • diameter D 7 at the bottom of notches 22 in zone 21: 92.8 mm;
  • outer diameter D 5 of zone 21: 97.2 mm;
  • height of zone 21, h 7 : 7.3 mm;
  • height of the shoulder 20, h 6 : 2.2 mm;
  • height h 8 corresponding to the first face 13 of the lip 10: 0.92 mm;
  • height h 9 corresponding to the second face 14 of the lip 10: 1.5 mm;
  • not h 4 : 12 mm;
  • three nets extending over 300 °;
  • height of the vertical face of the threads: 1 mm;
  • angle α 1 : 15 °;
  • angle α 2 : 45 °;
  • angle α 3 : 10 °.

L'on décrit maintenant le bouchon ou cape 30.The cap or cap 30 is now described.

Ce bouchon 30 comporte :

  • une paroi transversale de fond 31 ;
  • une jupe latérale 32 pourvue d'un filetage interne 33 ;
  • une bague d'inviolabilité 34 prolongeant la jupe latérale 32 et reliée à celle-ci par des ponts de liaison frangibles 35.
This plug 30 comprises:
  • a transverse bottom wall 31;
  • a side skirt 32 provided with an internal thread 33;
  • a tamperproof ring 34 extending the lateral skirt 32 and connected thereto by frangible connection bridges 35.

La paroi transversale de fond 31 comporte une partie centrale amincie 36.The transverse bottom wall 31 has a thinned central portion 36.

Cette partie amincie 36 présente un diamètre et une épaisseur telle que les flacons sont aisément gerbables et stockables.This thinned portion 36 has a diameter and a such that the flasks are easily stackable and storable.

La jupe latérale 32 comporte des stries 37 ou godrons sur sa surface externe, facilitant le dévissage du bouchon 30.The side skirt 32 has streaks 37 or fluted on its outer surface, making it easier to unscrew the cap 30.

Le filetage interne 33 est d'une forme complémentaire au filetage externe 8 du col 5 du flacon 1.The internal thread 33 is of a shape complementary to the external thread 8 of the neck 5 of the bottle 1.

Ce filetage interne 33 comporte trois filets 38a, 38b, 38c, s'étendant sur 285°.This internal thread 33 has three threads 38a, 38b, 38c, extending over 285 °.

Les filets 38a, 38b, 38c sont interrompus. The threads 38a, 38b, 38c are interrupted.

Successivement ces filets sont pleins sur 45°, creux sur 60°, pleins sur 60°, creux sur 60° pleins sur 60°, ainsi qu'il apparaít sur les figures.Successively these nets are full on 45 °, hollow over 60 °, full 60 °, hollow 60 ° full on 60 °, as it appears in the figures.

La surface extérieure de la jupe latérale 32 est légèrement tronconique, son diamètre allant en décroissant du bas vers le haut.The outer surface of the side skirt 32 is slightly frustoconical, its diameter decreasing from the bottom to the top.

La surface intérieure de la jupe est, quant à elle, sensiblement verticale, entre les filets 38a, 38b, 38c.The inner surface of the skirt is, in turn, substantially vertical, between the threads 38a, 38b, 38c.

Chaque filet 38a, 38b, 38c définit, du haut vers le bas, en coupe longitudinale :

  • une première surface 39 inclinée d'un angle α7 de 10 à 30° par rapport au plan P ;
  • une deuxième surface 40, sensiblement verticale ;
  • une troisième surface 41, inclinée d'un angle α8 de 10 à 30° par rapport au plan P.
Each thread 38a, 38b, 38c defines, from top to bottom, in longitudinal section:
  • a first surface 39 inclined at an angle α 7 of 10 to 30 ° with respect to the plane P;
  • a second surface 40, substantially vertical;
  • a third surface 41, inclined at an angle α 8 of 10 to 30 ° with respect to the plane P.

Dans le mode de réalisation représenté, les filets 38a, 38b, 38c définissent des contours, en coupe longitudinale, symétriques par rapport au plan P, les angles α7 α8 d'inclinaison des surfaces 39, 41 par rapport à ce plan étant de 20° environ.In the embodiment shown, the threads 38a, 38b, 38c define contours, in longitudinal section, symmetrical with respect to the plane P, the angles α 7 α 8 of inclination of the surfaces 39, 41 with respect to this plane being About 20 °.

A la base de la jupe, en dessous des filets 38a, 38b, 38c, un épaulement 42 est prévu de sorte que l'épaisseur e2 de l'extrémité inférieure de la jupe est sensiblement égale à l'épaisseur e3 de la jupe, entre les filets.At the base of the skirt, below the threads 38a, 38b, 38c, a shoulder 42 is provided so that the thickness e 2 of the lower end of the skirt is substantially equal to the thickness e 3 of the skirt , between the nets.

Cet épaulement facilite le guidage du bouchon lors de sa mise en place et fait partie des moyens permettant d'éviter le survissage. This shoulder facilitates the guiding of the plug during of its establishment and is one of the means to avoid overplay.

Les ponts frangibles 35 reliant la bande d'inviolabilité 34 à la jupe latérale 32 sont triangulaires coniques.The frangible bridges 35 connecting the band of tamper 34 to the side skirt 32 are triangular conical.

L'examen de la figure 5 montre que ces ponts 35 présentent en vue latérale ou radiale une forme de trapèze dont les deux côtés 43, 44 sont symétriques l'un de l'autre par rapport à un plan radial R.The examination of Figure 5 shows that these bridges 35 present in lateral or radial view a trapezoidal shape whose two sides 43, 44 are symmetrical to each other relative to a radial plane R.

La figure 7 montre que la section transversale haute des ponts, dans leur zone d'association avec le bord inférieur de la jupe 32, est de surface homothétique et inférieure à la section transversale basse de ces ponts, dans leur zone d'association avec la bande d'inviolabilité 34.Figure 7 shows that the cross-section high bridges, in their association zone with the edge lower part of the skirt 32, is of homothetic surface and lower than the low cross section of these bridges, in their zone of association with the tamper-evident band 34.

En d'autres termes, cette section transversale, sensiblement triangulaire, des ponts 35, est de surface décroissante depuis la base 45 jusqu'au sommet 46 des ponts 35.In other words, this cross section, substantially triangular, bridges 35, is surface decreasing from base 45 to top 46 bridges 35.

Plus précisément, chaque pont 35 est limité, vers l'intérieur du bouchon, par une surface sensiblement verticale 47 de contour trapézoïdal, et est limité, vers l'extérieur du bouchon, par une surface inclinée 48.More precisely, each bridge 35 is limited, towards inside the cap, by a surface substantially vertical 47 of trapezoidal contour, and is limited to the outside of the cap, by an inclined surface 48.

La surface inclinée 48 est telle que chaque pont 35 présente une symétrie par rapport à un plan radial R.The inclined surface 48 is such that each bridge 35 has a symmetry with respect to a radial plane R.

L'angle entre la surface inclinée 48 et la verticale est, dans ce plan médian radial R, de l'ordre de 10°, comme le montre la figure 10. The angle between the inclined surface 48 and the vertically, in this radial median plane R, of the order of 10 °, as shown in Figure 10.

La surface de base 45 des ponts 35 s'étend sur une épaisseur inférieure à celle de la bande d'inviolabilité 34.The base surface 45 of the bridges 35 extends over a Thicker than the tamper band 34.

Le dimensionnement des ponts 35 présenté ci-dessus permet d'assurer une rupture de ces ponts, au premier dévissage, à proximité du bord inférieur de la jupe latérale, le bouchon une fois dévissé ne comportant donc pas ou peu de reliefs de rupture à la base de cette jupe.The dimensioning of the bridges 35 presented above ensures breaking of these bridges, at the first unscrewing, near the bottom edge of the skirt side, the cap once unscrewed therefore not including no or little reliefs at the base of this skirt.

Les ponts frangibles peuvent être choisis de section différente, dans d'autres modes de réalisation.Frangible bridges can be chosen from different section, in other embodiments.

Ces ponts peuvent par exemple être cylindriques, prismatiques à base carrée, rectangulaire ou triangulaire.These bridges can for example be cylindrical, prisms with square, rectangular or triangular base.

Les ponts frangibles 35 sont disposés entre des zones d'appui 49.The frangible bridges 35 are arranged between support areas 49.

Lors du vissage, la bague d'inviolabilité se plaque contre le bouchon au niveau des zones d'appui 49 sous l'effet de la pression ce qui diminue les forces de cisaillement qui s'exercent habituellement sur les ponts 35.When screwing, the tamper evident ring against the plug at the support zones 49 under the effect of pressure which decreases the forces of shear usually on bridges 35.

Les zones d'appui 49 permettent ainsi de minimiser la taille des ponts 35, d'apporter un confort d'utilisation en abaissant l'effort nécessaire à la rupture de ces ponts.The bearing zones 49 thus make it possible to minimize the size of bridges 35, to bring a comfort of use by lowering the effort required to break these bridges.

La forme triangulaire conique des ponts 35 est calculée pour éviter le dévissage de biais, la pente de la surface inclinée 48 permet de faciliter l'amorçage de rupture dans le sens du dévissage. The conical triangular shape of bridges 35 is calculated to avoid bias unscrewing, the slope of the inclined surface 48 facilitates the priming of break in the direction of unscrewing.

Des pontets frangibles 50 de section rectangulaire sont disposés entre la surface d'appui 49 et la face inférieure 51 de la jupe 32.Frangible bridges 50 of rectangular section are disposed between the bearing surface 49 and the face lower 51 of the skirt 32.

Ces pontets 50 sont contraints lors de la mise en place du bouchon, ce qui permet de limiter encore l'effort appliqué sur les ponts frangibles 35.These bridges 50 are constrained during the setting place of the cap, which makes it possible to limit the effort applied on frangible bridges 35.

La bague d'inviolabilité comporte, en saillie interne, des crans 52 venant se bloquer dans les encoches 22 du col du flacon 1 au début du premier dévissage.The tamper-evident ring has, protruding internal, notches 52 coming to lock in the notches 22 neck of the bottle 1 at the beginning of the first unscrewing.

Ces crans 52 présentent une face arrière 60 et une face avant 61.These notches 52 have a rear face 60 and a front face 61.

Les termes "avant", "arrière" sont utilisés ici en référence au sens de vissage V.The terms "front" and "rear" are used here in reference to the screwing direction V.

La face arrière 60 est sensiblement radiale et définit un angle β1 de l'ordre de zéro à quelques degrés par rapport à la direction radiale.The rear face 60 is substantially radial and defines an angle β 1 of the order of zero to a few degrees with respect to the radial direction.

La face avant 61 est inclinée d'un angle β2 par rapport à la direction radiale, β2 étant de l'ordre de 50°.The front face 61 is inclined at an angle β 2 with respect to the radial direction, β 2 being of the order of 50 °.

Lors de la mise en place du bouchon sur le flacon, sur la chaíne de conditionnement, la surface avant 61 de chaque cran 52 peut glisser sur la surface arrière 26 de la saillie 24 correspondante du col (sens de vissage V).When putting the stopper on the bottle, on the packaging line, the front surface 61 of each notch 52 can slide on the rear surface 26 of the corresponding projection 24 of the neck (screwing direction V).

A l'inverse, lors du premier dévissage, la surface arrière 60 de chaque cran 52 va venir buter contre la surface avant 27 de la saillie 24 correspondante du col. Conversely, during the first unscrewing, the surface rear 60 of each notch 52 will come up against the front surface 27 of the corresponding projection 24 of the neck.

De sorte que la bague d'inviolabilité ne peut plus tourner. La poursuite de l'effort de dévissage entraíne la désolidarisation de la bague par rapport à la jupe, par rupture des ponts frangibles 35 et des pontets 50.So that the tamper-proof ring can no longer turn. The continuation of the unscrewing effort causes the disconnection of the ring relative to the skirt, by rupture of bridges 35 and bridges 50.

Il existe, dans un mode de réalisation, un espace (i) entre la surface inférieure 62 de la bague 34 et la surface latérale du corps 2. De sorte que la bague 34 "tombe" lors de la première ouverture du bouchon, ce qui facilite la détection d'une ouverture frauduleuse ou malveillante.There is, in one embodiment, a space (i) between the lower surface 62 of the ring 34 and the lateral surface of the body 2. So that the ring 34 "falls" when the plug is first opened, which facilitates the detection of a fraudulent opening or malicious.

Ainsi, après rupture des ponts 35, la bague 34 est libre sur le col 5, ce qui permet de visualiser l'ouverture.Thus, after rupture of the bridges 35, the ring 34 is free on the neck 5, which allows to visualize the opening.

La bague 34 restant sur le col 5 ne peut se mélanger accidentellement au contenu du flacon.The ring 34 remaining on the neck 5 can not be accidentally mix with the contents of the bottle.

En particulier, lorsque l'on retourne le flacon, la bague reste associée au flacon, même en agitant manuellement le flacon, notamment du fait du contact entre la base de l'épaulement 20 et la surface supérieure 63 de chaque cran 52.In particular, when we return the bottle, the ring remains associated with the bottle, even while shaking the bottle, especially because of the contact between the base of the shoulder 20 and the upper surface 63 of each step 52.

Le bouchon peut être fabriqué par injection.The cap can be made by injection.

Le dimensionnement du bouchon dépend bien entendu de celui du flacon 1.The sizing of the cap depends of course from that of the bottle 1.

A titre indicatif, les dimensions suivantes sont données, pour un mode de réalisation :

  • diamètre sur filet D'1 : 92,9 mm ;
  • diamètre en fond de filet D'2 : 96 mm ;
  • hauteur des crans h10 : 4,73 mm ;
  • hauteur de la jupe 32, h11 : 18,8 mm ;
  • hauteur totale du bouchon h12 : 26,3 mm ;
  • départ filet : 15,75 mm ;
  • trois filets s'étendant sur 285° ;
  • pas h'4 : 12 mm ;
  • diamètre maximum, stries 37 comprises D8 : 100,3 mm ;
  • dix ponts frangibles 35 ;
  • dix zones d'appui 49 ;
  • hauteur des ponts 35 : 0,6 mm.
As an indication, the following dimensions are given, for one embodiment:
  • diameter on thread D 1 : 92.9 mm;
  • diameter at the bottom of the net D ' 2 : 96 mm;
  • height of notches h 10 : 4.73 mm;
  • height of the skirt 32, h 11 : 18.8 mm;
  • total height of plug 12 : 26.3 mm;
  • net start: 15.75 mm;
  • three nets extending over 285 °;
  • not 4 : 12 mm;
  • maximum diameter, streaks 37 inclusive D 8 : 100.3 mm;
  • ten frangible bridges 35;
  • ten support zones 49;
  • bridge height 35: 0.6 mm.

L'ensemble flacon 1-bouchon 30 présente des caractéristiques d'inviolabilité et d'étanchéité améliorées par rapport aux ensembles connus de l'art antérieur, pour des flacons dont le col peut présenter un grand diamètre, de l'ordre de 4 à 20 centimètres.The entire bottle 1-cap 30 has improved tamper and sealing characteristics compared with the known sets of the prior art, for vials whose neck may have a large diameter, of the order of 4 to 20 centimeters.

Un opercule, non représenté, peut être scellé sur le col 5, bouchant ainsi l'orifice d'extrémité 6.A lid, not shown, can be sealed on the neck 5, thus blocking the end orifice 6.

Le scellage de cet opercule est facilité par la plage de scellage à renvoi d'angle défini par la lèvre 10.The sealing of this operculum is facilitated by the sealing range with angle of return defined by the lip 10.

Le scellage peut être obtenu par collage, induction, soudage thermique, ultrasonore ou hautes fréquences, ou équivalent.Sealing can be obtained by gluing, induction, thermal welding, ultrasound or high frequencies, or equivalent.

L'opercule peut être déchirable et/ou pelable.The lid may be tearable and / or peelable.

Le cas échéant, l'opercule est repositionnable. If necessary, the lid is repositionable.

L'opercule peut comporter une languette facilitant son enlèvement ou une ligne de plus faible épaisseur facilitant son défonçage.The lid may comprise a tongue facilitating its removal or a line of smaller thickness facilitating its routing.

L'opercule pourra être réalisé en un matériau polymère mono ou multicouches, ou en composite polymère/métaux permettant d'assurer par exemple une bonne étanchéité, notamment aux gaz et à la vapeur d'eau, en multicouche papier carton.The cover may be made of a material mono or multilayer polymer, or composite polymer / metals to ensure for example a good sealing, in particular gas and water vapor, multilayer paper cardboard.

Dans un mode de réalisation, l'opercule est en aluminium.In one embodiment, the lid is in aluminum.

L'association de la bague d'inviolabilité 34 et de l'opercule conduisent à une double inviolabilité intégrée.The association of the tamper-evident ring 34 and the operculum lead to an integrated double inviolability.

La plage de scellage à renvoi d'angle, formée par la lèvre 10 assure :

  • l'étanchéité après ouverture de l'opercule aluminium ;
  • l'étanchéité en l'absence de joint.
The angle-return sealing range formed by the lip 10 provides:
  • the tightness after opening the aluminum seal;
  • the seal in the absence of seal.

Cette étanchéité est obtenue notamment par écrasement de la lèvre 10 au contact de la saillie annulaire interne 65 du bouchon, disposée à proximité de la paroi de fond 31, à une distance b de celle-ci.This seal is obtained in particular by crushing of the lip 10 in contact with the projection annular inner 65 of the cap, disposed near the bottom wall 31 at a distance b thereof.

La pose du bouchon 30 sur le flacon 1 peut être manuelle mais est aisément mécanisable.The installation of the cap 30 on the bottle 1 can be manual but is easily mechanizable.

Le bouchon peut être vissé ou bien clipé grâce à l'angle des filets et à la rigidité du col 5. The cap can be screwed or clipped thanks to the angle of the nets and the rigidity of the neck 5.

La pente 64 à la base de chaque cran 52 de la bague d'inviolabilité facilite le passage sur l'épaulement 20.The slope 64 at the base of each notch 52 of the ring inviolability facilitates the passage on the shoulder 20.

Cette pente 64 est inclinée d'un angle β3 de l'ordre de 35°, dans le mode de réalisation représenté.This slope 64 is inclined by an angle β 3 of the order of 35 °, in the embodiment shown.

Le vissage tiers de tour et le calibrage des ponts 35 permettent d'éviter le vissage et le dévissage de biais, même pour des grands diamètres de bouchon et col.Screwing third of turn and calibration of bridges 35 prevent screwing and unscrewing of bias, even for large plug and neck diameters.

Lorsque le bouchon 30 est en place sur le flacon 1, la jupe latérale 32 se trouve, dans le mode de réalisation représenté, dans le prolongement vertical de la paroi latérale 4 du corps 2, ce qui améliore l'esthétique de l'ensemble par rapport aux produits existants.When the cap 30 is in place on the bottle 1, the side skirt 32 is, in the embodiment represented, in the vertical extension of the wall side 4 of the body 2, which improves the aesthetics of overall compared to existing products.

L'alignement corps 2 cape 30 peut être obtenu, dans un mode de réalisation, en mettant en oeuvre un moule à noyaux rétractables pour la fabrication de la cape 30.The body alignment 2 cape 30 can be obtained, in an embodiment, by implementing a mold to retractable cores for making cape 30.

L'emploi d'un moule à noyaux rétractables permet notamment, de plus :

  • de préserver des hautes cadences, typiques de celles accessibles par des moules à dévissage, le moule à noyaux rétractables étant moins coûteux que les moules à dévissage ;
  • de ne pas solliciter les ponts (35) ou les pontets (50) lors du démoulage, de sorte que le dimensionnement des pontets peut être réalisé au plus juste d'où un meilleur confort d'utilisation.
The use of a mold with retractable cores makes it possible moreover:
  • to preserve high rates, typical of those accessible by unscrewing molds, the retractable core mold being less expensive than unscrewing molds;
  • not to solicit the bridges (35) or the bridges (50) during demolding, so that the dimensioning of the bridges can be achieved at the fair, hence a better user comfort.

Claims (19)

  1. Container of the kind comprising:
    a flask (1) presenting a threaded neck (5) defining an end aperture (6) of large diameter, typically between 4 and 20 centimetres;
    a stopper (30) of which the lateral skirt (32) provides threads (38a, 38b, 38c) complementary to the threads of the neck of the flask;
    the said flask (1) and the said stopper (30) being made of plastic material,
    the neck (5) of the flask (1) including a zone (21) of grooves (22), these grooves (22) being separated by ridges (24);
    the stopper (30) including a security band (34) joined to the skirt (32) by frangible bridges (35), the said band (34) being provided with a plurality of notches (52) located and directed towards the outside of the band (34);
    the grooves (22) and the ridges (24) of the neck (5) cooperating with the notches (52) of the band such as to interfere at the time of the first unscrewing of the stopper (30), and allowing the rupture of the bridges (35),
    the end aperture (6) of the flask (1) being defined by a lip (10) inclined relative to a transversal plane P of the flask (30),
    this lip (10) having the function in the first instance to receive and to ensure the integrity of a protective closure cap of the flask (10) and, in the second instance, the closure cap having been raised on the first unscrewing of the flask, to constitute a sealing region cooperating with the stopper (30), characterized in that the lip (10) includes, around the end aperture (6):
    a first face (13) inclined at a first angle (α1) relative to the transversal plane P;
    a second face (14), inclined at a second angle (α2), greater than the first angle (α1), relative to the transversal plane.
  2. Container according to claim 1, characterised in that the sealing is ensured by the squeezing of the lip (10) by the screwing of the stopper (30).
  3. Container according to claim 1 or 2, characterised in that the first angle (α1) is between 1 and 20°.
  4. Container according to claim 3, characterised in that the first angle (α1) is substantially 15°.
  5. Container according to any one of claims 1 to 4, characterised in that the second angle is between 40 and 60°.
  6. Container according to claim 5, characterised in that the second angle is substantially 45°.
  7. Container according any one of claims 1 to 6, characterised in that the notches (52) are six in number, the grooves (22) and ridges (24) of the neck (5) also being six in number.
  8. Container according to claim 7, characterised in that the grooves (22) and ridges (24) of the neck (5) and regularly spaced about the periphery of the neck (5).
  9. Container according to any one of claims 1 to 8, characterised in that the frangible bridges (35) are triangular cones and are defined towards the inside of the stopper by a substantially vertical surface (47) of trapezoidal shape and, towards the outside of the stopper (30), by a surface (48) inclined relative to the vertical.
  10. Container according to claim 9, characterised in that the angle of inclination of the surface (48) relative to the vertical is between 5 and 15°.
  11. Container according to claim 10, characterised in that the angle of inclination of the surface (48) relative to the vertical is substantially 10°.
  12. Container according to any one of claims 1 to 11, characterised in that zones of support (49) of the band (34) on the skirt (32) are disposed between the frangible bridges (35), such that when the stopper (30) is in place on the flask (10), the band engages the skirt in the regions of the zones of support (49), thereby reducing the forces of severance on the frangible bridges (35).
  13. Container according to any one of the foregoing claims, characterised in that the flask is made of a material chosen from the group comprising: polyvinyl chloride, polyolefins such as low density polyethylene, high density polyethylene, or a mixture of low and high density polyethylene, cellulose triacetate, acrylic polymers, polycarbonate, complex bi- and tri-polymers, polypropylene and its copolymers, mixed polyethylene and polypropylene.
  14. Container according to claim 13, characterised in that the flask is formed by blown extrusion.
  15. Container according to any one of the foregoing claims, characterised in that the stopper (30) is made of a material chosen from the group comprising: polyvinyl chloride, polyolefins such as low density polyethylene, high density polyethylene, or a mixture of low and high density polyethylene, cellulose triacetate, acrylic polymers, polycarbonate, complex bi- and tri-polymers, polypropylene and its copolymers, mixed polyethylene and polypropylene.
  16. Container according to claim 15, characterised in that the stopper (30) is formed by injection.
  17. Container according to any one of claims 1 to 16, characterised in that the neck (5) comprises at least two threads (9a, 9b, 9c), the stopper (30) comprising three complementary threads (38a, 38b, 38c).
  18. Container according to any one of claims 1 to 17, characterised in that the stopper (30) is made in a retractable mould.
  19. Container according to claim 18, characterised in that the lateral skirt (32) of the stopper (30) is located in the vertical extension of the side wall (4) of the body (2).
EP98402044A 1997-08-26 1998-08-12 Vial with a neck of large diameter and with a cap with tamper-evident band Expired - Lifetime EP0899204B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9710662 1997-08-26
FR9710662A FR2767792B1 (en) 1997-08-26 1997-08-26 CORD STOPPER FOR LARGE DIAMETER BOTTLE BOTTLE

Publications (2)

Publication Number Publication Date
EP0899204A1 EP0899204A1 (en) 1999-03-03
EP0899204B1 true EP0899204B1 (en) 2005-10-12

Family

ID=9510506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402044A Expired - Lifetime EP0899204B1 (en) 1997-08-26 1998-08-12 Vial with a neck of large diameter and with a cap with tamper-evident band

Country Status (4)

Country Link
EP (1) EP0899204B1 (en)
AT (1) ATE306434T1 (en)
DE (1) DE69831839D1 (en)
FR (1) FR2767792B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2463973C (en) 2002-09-10 2007-12-11 Betapack, S.A. Stopper with guaranteed tamper-proof seal
US6948631B2 (en) 2004-01-08 2005-09-27 3088081 Canada Inc. Controllable tamper proof closure for a vial
IT201900011124A1 (en) * 2019-07-08 2021-01-08 Sacmi Cap to close a container.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH553695A (en) * 1972-05-18 1974-09-13 Lovida Ag FILLED CONTAINER WITH LID.
DE3515719A1 (en) * 1985-05-02 1986-11-06 Fa. Friedrich H. Weischede, 4250 Bottrop Tamper-proof closure made of plastic for containers and method for producing the tamper-proof closure
CA1290281C (en) * 1986-04-25 1991-10-08 Joseph J. Bullock, Iii Plastic bottle cap having foil neck seal
GB2269372A (en) * 1992-08-06 1994-02-09 Lawson Mardon Cap with tamper-evident band
AU1660295A (en) * 1994-07-14 1996-02-16 Portola Packaging, Inc. Foil lined snap-on, screw-off closure
SE508379C2 (en) * 1996-01-22 1998-09-28 Gambro Dialysatoren Double seal cover

Also Published As

Publication number Publication date
DE69831839D1 (en) 2006-02-23
EP0899204A1 (en) 1999-03-03
FR2767792B1 (en) 1999-10-15
FR2767792A1 (en) 1999-03-05
ATE306434T1 (en) 2005-10-15

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