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EP1638853B1 - Bottle closure with improved thread - Google Patents

Bottle closure with improved thread Download PDF

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Publication number
EP1638853B1
EP1638853B1 EP04767424A EP04767424A EP1638853B1 EP 1638853 B1 EP1638853 B1 EP 1638853B1 EP 04767424 A EP04767424 A EP 04767424A EP 04767424 A EP04767424 A EP 04767424A EP 1638853 B1 EP1638853 B1 EP 1638853B1
Authority
EP
European Patent Office
Prior art keywords
insert
neck
cap
shell
seal
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
EP04767424A
Other languages
German (de)
French (fr)
Other versions
EP1638853A1 (en
Inventor
Jacques Granger
Jean-Marie Bourreau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amcor Flexibles Capsules France SAS
Original Assignee
Alcan Packaging Capsules SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alcan Packaging Capsules SAS filed Critical Alcan Packaging Capsules SAS
Priority to PL04767424T priority Critical patent/PL1638853T3/en
Publication of EP1638853A1 publication Critical patent/EP1638853A1/en
Application granted granted Critical
Publication of EP1638853B1 publication Critical patent/EP1638853B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D41/02—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
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045—Discs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S215/00—Bottles and jars
    • Y10S215/01—Fins

Definitions

  • the invention relates to the field of metal closure caps with plastic insert typically intended for screw-capping the bottles.
  • closure capsules with metal shells and with a plastic insert are already known, the metal shell allowing the capsule to be capped by crimping the cap on the threaded glass ring, and the threaded insert providing the opening function. closure of the capsule by screwing - unscrewing of the capsule, as well as the sealing tight closure.
  • the invention aims at the development of a capping capsule that meets this triple objective.
  • the invention relates to a screw closure cap having the features of claim 1.
  • the Applicant has developed a capsule in which the reported seal is compressed radially, and she was able to observe check, on industrial capping line, on the one hand, a greater tolerance on the axial position of the capsule relative to the rim was possible, while obtaining the required sealing, and secondly that, not having to compress the joint axially, it was then that the torque screwing -exposure was substantially constant and located in the usual range of values. Furthermore, particularly in view of this greater tolerance, the use of such a capsule has made it possible to increase the capping rates.
  • radial compression is called compression comprising a predominant radial component, which presupposes a compressive force exerted in a compression direction making with the vertical an angle greater than 45 °, the angle being 90 °. in case of pure radial compression and 0 ° in case of pure axial compression.
  • said insert (3) can comprise a plurality of notches or retaining lugs (34), typically 3 notches arranged at 120 ° from each other, providing, in place of said thread ( 33), or in addition to said thread (33), said zone annular lower cover, so as to secure said seal (4) to said insert (3).
  • said inner skirt (31) of said insert (3) may have at the bottom of the thread (33) a thickness Ej ranging from 0.1 mm to 1 mm, and typically from 0.15 mm to 0.5 mm.
  • Figures 1a and 1d show inserts (3) of skirt thickness Ej equal to 0.3 mm (maximum value).
  • Said insert (3) may be a threaded insert, typically molded, of thermoplastic material, typically selected from PS, PET, PA, polyolefins such as PE or PP.
  • the shock PS is preferably used.
  • the inserts are typically injection molded.
  • Said shell (2) may be a metal shell of aluminum, or tin, of multilayer metalloplastic material capable of being crimped. Indeed, as shown in the right part of Figure 6, the metal shell is crimped under the glass ring in the necking part (63) of the neck (5).
  • said seal (4) may be of multilayer material typically comprising a compressible central core C of a thermoplastic material with a density of from 200 to 500 kg / m 3 , a lower layer I, typically made of polyolefin or optionally a barrier material to oxygen, intended to be in contact with said alcoholic beverage. Its thickness e can range from 0.5 to 3 mm.
  • said insert (3) may have a height Hi less than the height Hc of said shell (2).
  • the height Hc of said shell (2) may be at least two times higher than the height H 1 of said insert (3), so as to form a long skirt capsule, as illustrated for example in FIG. 6.
  • said shell (2) may comprise means for detecting or for facilitating a first opening, typically a weakening line (22) or a strip of first opening formed on said outer skirt, said means being placed at a height between Hc and Hi, so that said means is located above said narrowed portion (53) of said neck (5) when said capsule (1) is screwed onto said neck (5), said capsule (1) being crimped to said neck (5) by local deformation of said outer skirt (21) of said shell (2) in said necking part (53), so that said capsule (1) can not be unscrewed without breaking said line weakening or removing said strip.
  • a first opening typically a weakening line (22) or a strip of first opening formed on said outer skirt
  • said insert (3) may have a height Hi at least equal to the height Hc of said shell (2), as illustrated in FIG. 7b.
  • said insert (3) may comprise means for detecting or facilitating a first opening, said inner skirt of said insert comprising at its lower part a hooking means intended to cooperate with said necking portion when said capsule is screwed and crimped on said neck.
  • the insert (3) comprises a weakening line (36) delimiting a lower portion (37) comprising a plurality of hooks (371) capable of cooperating with said narrowed portion (53) of the neck, lower portion (37) which may comprise a shoe (370) cooperating with the lower end of the outer skirt (21) of the shell (2), As soon as the capsule (1) is unscrewed, as illustrated in FIG. 7c, said lower part (37) separates and appears visibly as such as witnessing a first opening.
  • said shell (2) may have a radius of curvature RC of said shell at the junction between said outer head and said outer skirt ranging from 0.5 mm to 5 mm, and may be typically 1.5 mm or 2.5 mm.
  • said shell (2) may have a radius of curvature RC at least equal to 2 mm
  • said insert (3) may have a radius of curvature RCi typically equal to RC, so that the all of said shell (2) compresses said insert (3) or in contact with said insert (3), and thus said insert (3) has an improved temperature resistance.
  • the absence of free space between said shell and said insert has an influence on the tightness in the case where the storage or transport conditions may involve relatively high temperature conditions, such as is the case in tropical countries.
  • said insert (3) and said shell (2) are secured by press fitting and / or by an adhesive layer solidarisant said outer skirts (21) and inner (31).
  • said adhesive layer is a hot-melt layer.
  • a complementary element may be secured to said insert (3) or to said seal (4), said complementary element intended to remain secured to said neck (5) after unscrewing said capsule (1), said element typically forming a pourer (7).
  • Figures 5a and 5b illustrate the case where the pourer (7) is reversibly secured to the central portion (40) of the seal (4).
  • the pourer (7) may comprise a typically vertical wall (70) adapted to penetrate into said neck (5), and a flared upper portion (71) for pouring the contents of the bottle, the wall (70) being externally provided with a plurality of fins (72) for sealing the spout to the neck (5).
  • This pourer (7) comprises arms (73) which cooperate by reversible clipping with a part (8).
  • Said piece (8) comprises a foot (80) sealed to the central part of the seal (40) and a rod (81) carrying a head (82) which cooperates with the end of the fins (72).
  • All the figures correspond to exemplary embodiments according to the invention.
  • All inserts (3) were made by injection molding PS shock.
  • All the metal shells were manufactured by stamping 0.21 mm thick aluminum strip, so as to obtain shells Hc height typically equal to 60 mm.
  • the seals were obtained from CORELEN ® branded trade material in webs with a thickness of 1.2 mm. This material comprises a core of PE expanded or EPE 1 mm thick, its complete multilayer structure being represented by EPE / kraft paper / Sn / PVDC, the PVDC layer being in contact with the liquid, intermediate layers of adhesives solidarising if necessary the adjacent layers.
  • EPE / PE / PVDC / PE or PE / PVDC / PE / EPE / PE / PVDC / PE type joints were also used for testing.
  • FIGS. 1a to 1d A) Inserts and capsules according to FIGS. 1a to 1d:
  • Inserts (3) according to Figs. 1a-1d were manufactured, inserts having a diameter of 29.3 mm and a height of 11.1 mm Hi.
  • the thickness Ej of the bottom threaded inner skirt (31) was taken as 0.3 mm as the maximum nominal value.
  • These inserts (3) comprise a circular tongue (32) located at an axial distance h1 of 2.8 mm, said tongue having a radial width 1 of 1.55 mm - see FIG. 1b.
  • This circular tongue (32) has a tapered end or inner portion (320) adapted to be bent upwards when the capsule is screwed onto the neck.
  • the radius of curvature RCi of these inserts (3) was taken equal to 0.79 mm.
  • FIG. 1a shows a first insert variant - the seal (4) being absent - in which said circular tongue (32) and the upper end of the threads (33) define an annular groove (35) of 1.4 mm axial width.
  • the annular groove (35) is defined at its bottom by 3 notches or lugs (34) disposed at 120 ° from each other, only one being shown in Figure 1d.
  • FIG. 2c illustrates in a detailed and enlarged manner, the radial compression (6) of the edge (41) of the joint (4) by the circular tongue (32) of the insert (3) contained in the typically metallic shell (2) .
  • the overlap area (60) between the border (41) and the tongue (32 at its radial end (320) is substantially vertical, so that the compression direction (61) is substantially 90 ° with the vertical.
  • An insert (3) having a radius of curvature RCi of 2.5 mm was manufactured. This same insert was used to manufacture two capsules (1) differing by the radius of curvature RC of the metal shell (2).
  • the shell (2) of Figure 4a had a radius of curvature RC1 of 1.5 mm, while the shell (2) of Figure 4b had a radius of curvature RC2 of 2.5 mm.
  • a free space (23) was present inside said shell, between said shell and said insert in the case of the shell according to FIG. 4a, whereas the shell FIG. 4b did not have any space ( 23).
  • a pourer (7) and a piece (8) acting as temporary support for the pourer have been formed by injection molding PE, and allowing the pourer to be automatically centered with respect to the neck.
  • the workpiece (8) was heat sealed to the central portion (40) of the seal (4) which included a lower layer also of PE. Said piece (8) is secured to said pourer (7) with a minimal axial force, but typically sufficient for said pourer does not separate from said piece (8) under its own weight, so that said seal (4) and said piece (8) remain integral with said insert (3) during the opening of said capsule, the pourer (7) remaining integral with the neck through the friction forces generated by said fins (72).
  • Inserts and capsules have been made such that, after screwing and capping, the radial compression direction (61) is at an angle to the vertical of between 45 ° and 90 °.
  • inserts are molded with a plurality of tabs forming hooks (371), able to cooperate with the necking part (53) located below the counter-ring (54) of the neck (5), so that in this case case, there is no crimping of the outer skirt (21) in said narrowed portion (53).
  • the capsules (1) obtained were screwed on the necks as illustrated on the left part of FIG. 6, and crimped on the neck, in the case of tests A to E, as illustrated on the right part of FIG.
  • the Applicant has observed, as illustrated in Figures 2c, 3a and 3b, that the capsules according to the invention were insensitive, both with regard to the final seal as regards the unscrewing torque , the conditions of screwing and crimping, that is to say capping conditions in general, and they were also insensitive to the height variations capsulated bottles.
  • the seal and the opening torque to unscrew the capsule remain substantially constant throughout a production and regardless of the origin of the bottles glass used.
  • 75 cm 3 bottles of capacity with a red wine at 12 ° of alcohol are filled under atmospheric pressure and at 20 ° C. so as to have a free volume of 13 cm.
  • Leakage pressure and temperature Leakage pressure Leak temperature STELUXE ® capsule according to the prior art with axial compression seal 1.40 bar is 0.140 MPa 45 ° C
  • the capsules according to the invention have a seal much higher than that of the capsules of the state of the art.
  • opening torque is in a range of 11 to 13 Lbs / inch, or 1.24 to 1.47 N / m
  • the capsule according to the state of the art requires a much higher torque: Opening torque in Lbs / inch and N / m
  • STELIJXE ® capsule according to prior art From 14 to 17 Lbs / inch Or 1.58 to 1.92 N / m
  • Capsule according to the invention According to FIGS. 1a and 4b from 11 to 13 Lbs / inch or from 1.24 to 1.47 N / m
  • the Applicant has observed that the capsules according to the invention allowed to increase by about 10% capping rates without risk of appearing leaks.
  • the Applicant has observed that it is possible to obtain a high seal without this requiring a high first opening torque, as with the capsules of the state of the art. Thus, even the elderly are able to unscrew the capsules according to the invention.
  • the capsules (1) according to the invention could have an improved "high temperature" sealing with capsules of the type of FIG. 4b in which both said shell and said insert have a radius of curvature. relatively high.
  • the capsules according to the invention can thus be used anywhere in the world, whatever the local weather conditions.
  • Screw closure cap 1 Vertical axial direction 10 Metal hull 2 Outer head 20 Outer skirt 21 Line of weakening 22 Free space 23 Plastic insert 3 Inner head 30 Inner skirt 31 Circular tongue 32 Flexible radial end 320 Thread 33 Notch or seal retainer 34 Ring groove 35 Bridge line 36 Lower part 37 Heel 370 Hook 371 joint 4 Central part 40 Peripheral border 41 Neck of a bottle 5 Drinking 50 The top part 51 Threaded part or thread 52 Crimp part 53 against-ring 54 Radial compression of 41 against 51 6 Coverage area between 41 and 320 60 Compression direction 61 pouring 7 Vertical wall 70 Flared upper part 71 Fins of solidarity to the neck 5 72 Reversible fastening arm at 8 73 Support piece of 7 sealed or welded to 40 8 Foot 80 stem 81 Head 82

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

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

L'invention concerne le domaine des capsules de bouchage métalliques à insert en matière plastique typiquement destinées au bouchage à vis des bouteilles.The invention relates to the field of metal closure caps with plastic insert typically intended for screw-capping the bottles.

ETAT DE LA TECHNIQUESTATE OF THE ART

On connaît déjà un certain nombre de capsules de bouchage à coques métalliques et à insert en matière plastique, la coque métallique permettant le capsulage par sertissage de la capsule sur la bague de verrerie filetée, et l'insert fileté assurant la fonction d'ouverture - fermeture de la capsule par vissage - dévissage de la capsule, ainsi que l'étanchéité du bouchage étanche.A number of closure capsules with metal shells and with a plastic insert are already known, the metal shell allowing the capsule to be capped by crimping the cap on the threaded glass ring, and the threaded insert providing the opening function. closure of the capsule by screwing - unscrewing of the capsule, as well as the sealing tight closure.

Ainsi, parmi les brevets au nom de la demanderesse, on peut citer :

  • le brevet français No 2 763 046 qui divulgue un moyen pour solidariser l'insert à la coque métallique,
  • le brevet français No 2 792 617 qui divulgue des capsules de bouchage composite dans laquelle l'aspect de la capsule peut être modifié en conservant un même insert et donc sans avoir à modifier les fonctions techniques de la capsule,
  • le brevet français No 2 793 216 qui divulgue des capsules de bouchage composite avec un joint rapporté, selon le préambule de la revendication 1.
  • le brevet français No 2 803 827 qui divulgue des capsules de bouchage avec un insert de faible épaisseur.
Thus, among the patents in the name of the applicant, there may be mentioned:
  • the patent French No 2 763 046 which discloses a means for securing the insert to the metal shell,
  • the patent French No 2 792 617 which discloses composite closure capsules in which the appearance of the capsule can be modified while maintaining the same insert and therefore without having to modify the technical functions of the capsule,
  • the patent French No 2,793,216 which discloses composite closure capsules with an attached seal, according to the preamble of claim 1.
  • the patent French No 2 803 827 which discloses capping capsules with a thin insert.

PROBLEMES POSESPROBLEMS POSED

Les exigences et les problèmes posés par les capsules de bouchage de l'état de la technique sont de plusieurs types :

  • d'une part, il importe que les capsules de bouchage présentent l'étanchéité requise, et en particulier une étanchéité très élevée dans le cas du conditionnement de vin blanc,
  • d'autre part, il importe également que cette étanchéité soit obtenue sans que cela nécessite un couple de vissage/dévissage élevé, dans la mesure où il convient de pouvoir dévisser à la main les capsules de bouchage, notamment lors d'une première ouverture, et cela, bien sûr, sans faire appel à un outil quelconque,
  • enfin, il importe que ces valeurs d'étanchéité et de couple de vissage/dévissage puissent être obtenues dans les conditions industrielles de capsulage à haute cadence, et sans rebuts significatifs, c'est-à-dire en acceptant des tolérances relativement grandes sur les dimensions exactes des bouteilles de verre à capsuler.
The requirements and the problems posed by the closure capsules of the state of the art are of several types:
  • on the one hand, it is important that the closure capsules have the required sealing, and in particular a very high watertightness in the case of white wine packaging,
  • on the other hand, it is also important that this seal is obtained without this requiring a high screwing / unscrewing torque, insofar as it is necessary to be able to unscrew the closure caps by hand, in particular during a first opening, and that, of course, without using any tool,
  • finally, it is important that these sealing values and torque screwing / unscrewing can be obtained under industrial conditions of high-speed capping, and without significant rejects, that is to say by accepting relatively large tolerances on exact dimensions of glass bottles to be capped.

L'invention vise à la mise au point d'une capsule de bouchage qui réponde à ce triple objectif.The invention aims at the development of a capping capsule that meets this triple objective.

DESCRIPTION DE L'INVENTIONDESCRIPTION OF THE INVENTION

L'invention a pour objet une capsule de bouchage à vis ayant les caractéristiques de la revendication 1.The invention relates to a screw closure cap having the features of claim 1.

En effet, la demanderesse avait observé au préalable que beaucoup de problèmes rencontrés dans le capsulage utilisant des capsules de l'état de la technique venaient notamment soit de légères variations de hauteur des bouteilles à capsuler, soit encore d'un léger écart sur la distance axiale entre la capsule et le buvant, dû notamment au jeu normal des dispositifs de capsules, ce qui entraînait une variation de la compression axiale du joint sur le buvant du goulot, et en conséquence, une étanchéité variable ainsi qu'un couple de vissage variable.
Ainsi, à la suite de ses observations, la demanderesse a mis au point une capsule dans laquelle le joint rapporté est comprimé radialement, et elle a pu observer vérifier, sur ligne de capsulage industrielle, d'une part, qu'une plus grande tolérance sur la position axiale de la capsule par rapport au buvant était possible, tout en obtenant l'étanchéité requise, et d'autre part que, n'ayant pas à comprimer le joint de manière axiale, il se trouvait alors que le couple de vissage-dévissage était sensiblement constant et situé dans la plage de valeurs habituelle.
Par ailleurs, compte tenu notamment de cette plus grande tolérance, l'utilisation d'une telle capsule a permis d'augmenter les cadences de capsulage.Indeed, the Applicant had previously observed that many problems encountered in capping using capsules of the state of the art came in particular either slight variations in the height of bottles to be capped, or a slight difference in distance axial between the capsule and the rim, due in particular to the normal play of the capsules devices, which resulted in a variation of the axial compression of the seal on the rim of the neck, and consequently, a variable seal and a variable torque screw .
Thus, following its observations, the Applicant has developed a capsule in which the reported seal is compressed radially, and she was able to observe check, on industrial capping line, on the one hand, a greater tolerance on the axial position of the capsule relative to the rim was possible, while obtaining the required sealing, and secondly that, not having to compress the joint axially, it was then that the torque screwing -exposure was substantially constant and located in the usual range of values.
Furthermore, particularly in view of this greater tolerance, the use of such a capsule has made it possible to increase the capping rates.

Selon l'invention, on appelle compression radiale une compression comprenant une composante radiale prépondérante, ce qui suppose un effort de compression s'exerçant dans une direction de compression faisant avec la verticale un angle supérieur à 45°, l'angle étant de 90° en cas de compression radiale pure et de 0° en cas de compression axiale pure.According to the invention, radial compression is called compression comprising a predominant radial component, which presupposes a compressive force exerted in a compression direction making with the vertical an angle greater than 45 °, the angle being 90 °. in case of pure radial compression and 0 ° in case of pure axial compression.

DESCRIPTION DES FIGURESDESCRIPTION OF THE FIGURES

Toutes les figures sont relatives à l'invention.

  • La figure 1a est une vue d'une coupe axiale d'un insert (3), sans son joint (4).
  • La figure 1b est une vue agrandie d'une partie de l'insert de la figure 1a (partie en haut à gauche).
  • La figure 1c est une vue en perspective d'un insert (3) en vue de dessus latérale, à échelle réduite par rapport à l'insert de la figure 1a.
  • La figure 1d, analogue à la figure 1a, représente un insert (3), le joint (4) étant présent et solidarisé à l'insert par une pluralité de crans ou ergots (34), typiquement 3 crans à 120°.
  • La figure 2a est une coupe axiale partielle gauche d'un insert (3), avec son joint (4), le joint (4) étant solidarisé à l'insert par le filetage intérieur (33).
  • La figure 2b est une coupe axiale partielle droite de l'insert (3) de la figure 2a vissé sur un goulot (5) - la coque métallique (2) de la capsule (1) n'ayant pas été représentée.
  • La figure 2c est une vue agrandie, en coupe axiale partielle droite, d'une capsule (1) vissée sur un goulot (5) illustrant la compression radiale (6) de la bordure périphérique (41) du joint (4) contre la partie supérieure verticale (51) du goulot (5), par la languette circulaire (32), dans le cas où la capsule (1) est à une distance axiale H0 du buvant (50) du goulot (5).
  • Les figures 3a et 3b sont analogues à la figure 2c.
  • Sur la figure 3a, la capsule (1) est à une distance axiale H1>H0 du buvant (50) du goulot (5), sans que cela modifie la hauteur R1 de la zone de recouvrement (60).
  • Sur la figure 3b, la capsule (1) est à une distance axiale H2<H0 du buvant (50) du goulot (5), sans que cela modifie la hauteur R1 de la zone de recouvrement (60).
  • Sur la figure 4a, analogue à la figure 2c, la coque métallique (2) présente, à la jonction entre la tête extérieure (20) et la jupe extérieure (21), un rayon de courbure RC1 inférieur à celui RC2 de la coque métallique (2) de la figure 2c ou de la figure 4b, l'insert (3) étant le même dans les deux cas.
  • Selon la figure 4b, la capsule (1) est solidarisée à un verseur (7), dont la partie supérieure évasée (71) est rabattue sur le buvant (50) du goulot.
  • La figure 5a représente, en coupe axiale, la solidarisation réversible du verseur (7) avec la partie centrale (40) du joint (4), grâce à une pièce support (8), le verseur comprenant une pluralité de bras de solidarisation (73) coopérant réversiblement avec ladite pièce support (8) fixée à la partie centrale (40) du joint (4).
  • La figure 5b représente, en coupe axiale, le verseur (7) solidarisé au goulot (5) après dévissage de la capsule (1).
  • La figure 5c est une vue partielle dans un plan horizontal des bras de solidarisation (73) du verseur (7) coopérant avec la tête (82) de la pièce support (8).
  • La figure 6 est une vue en coupe axiale d'une capsule (1) représentée vissée sur un goulot (5) en vue latérale.
    Sur la partie gauche de la figure, 1a capsule (1) est représentée vissée et non sertie, et sur la partie droite, la capsule (1) est représentée sertie, une portion de la jupe extérieure (21) ayant été repoussée durant le capsulage sous la partie rétreinte (53) du goulot (5).
  • La figure 7a est une vue schématique, en coupe axiale, d'une compression radiale (6) du joint (4) contre le goulot (5).
  • Les figures 7b et 7c sont des vues schématiques partielles, en coupe axiale, illustrant le cas où l'insert assure la fixation de la capsule (1) au goulot (5) grâce à une pluralité de crochets (371) d'une partie inférieure (37) coopérant avec la partie rétreinte (53) du goulot (5), et comprend un moyen pour détecter une première ouverture, grâce à une ligne d'affaiblissement (36), formée par une pluralité de ponts, reliant la partie inférieure (37) au reste de l'insert (3).
  • La figure 7b correspond à la capsule (1) vissée avant première ouverture, alors que la figure 7c illustre le détachement de ladite inférieure (37) suite à une première ouverture entraînant la rupture des ponts de la ligne d'affaiblissement (36).
All the figures relate to the invention.
  • Figure 1a is a view of an axial section of an insert (3) without its seal (4).
  • Figure 1b is an enlarged view of a portion of the insert of Figure 1a (top left).
  • Figure 1c is a perspective view of an insert (3) in lateral plan view, reduced scale compared to the insert of Figure 1a.
  • Figure 1d, similar to Figure 1a, shows an insert (3), the seal (4) being present and secured to the insert by a plurality of notches or lugs (34), typically 3 notches at 120 °.
  • Figure 2a is a left partial axial section of an insert (3), with its seal (4), the seal (4) being secured to the insert by the internal thread (33).
  • Figure 2b is a partial axial section of the insert (3) of Figure 2a screwed onto a neck (5) - the metal shell (2) of the capsule (1) has not been shown.
  • FIG. 2c is an enlarged view, in partial axial axial section, of a capsule (1) screwed onto a neck (5) illustrating the radial compression (6) of the peripheral edge (41) of the seal (4) against the portion upper vertical (51) of the neck (5), by the circular tongue (32), in the case where the capsule (1) is at an axial distance H0 of the rim (50) of the neck (5).
  • Figures 3a and 3b are similar to Figure 2c.
  • In FIG. 3a, the capsule (1) is at an axial distance H1> H0 from the rim (50) of the neck (5), without this modifying the height R1 of the covering zone (60).
  • In FIG. 3b, the capsule (1) is at an axial distance H2 <H0 from the rim (50) of the neck (5), without this modifying the height R1 of the covering zone (60).
  • In FIG. 4a, similar to FIG. 2c, the metal shell (2) has, at the junction between the outer head (20) and the outer skirt (21), a radius of curvature RC1 smaller than that RC2 of the metal shell (2) of Figure 2c or Figure 4b, the insert (3) being the same in both cases.
  • According to Figure 4b, the capsule (1) is secured to a pourer (7), the upper flared portion (71) is folded over the rim (50) of the neck.
  • FIG. 5a shows, in axial section, the reversible connection of the pourer (7) with the central part (40) of the seal (4), thanks to a support piece (8), the pourer comprising a plurality of securing arms (73). ) cooperating reversibly with said support member (8) attached to the central portion (40) of the seal (4).
  • Figure 5b shows, in axial section, the pourer (7) secured to the neck (5) after unscrewing the capsule (1).
  • Figure 5c is a partial view in a horizontal plane of the securing arms (73) of the pourer (7) cooperating with the head (82) of the support part (8).
  • Figure 6 is an axial sectional view of a capsule (1) shown screwed onto a neck (5) in side view.
    On the left side of the figure, the capsule (1) is shown screwed and not crimped, and on the right side, the capsule (1) is shown crimped, a portion of the outer skirt (21) having been repelled during capping under the narrowing portion (53) of the neck (5).
  • Figure 7a is a schematic view, in axial section, of a radial compression (6) of the seal (4) against the neck (5).
  • FIGS. 7b and 7c are partial diagrammatic views, in axial section, illustrating the case where the insert ensures the attachment of the capsule (1) to the neck (5) thanks to a plurality of hooks (371) of a lower part. (37) cooperating with the narrowed portion (53) of the neck (5), and comprises means for detecting a first opening, by means of a weakening line (36), formed by a plurality of bridges, connecting the lower part ( 37) to the rest of the insert (3).
  • Figure 7b corresponds to the capsule (1) screwed before first opening, while Figure 7c illustrates the detachment of said lower (37) following a first opening causing the breaking of the bridges of the weakening line (36).

DESCRIPTION DETAILLE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

Selon l'invention, et de manière à former ledit moyen de compression radiale (6) :

  1. a) ladite jupe intérieure (31) peut comprendre une languette circulaire (32) espacée axialement d'une distance h1 de ladite tête intérieure (30) formant le fond dudit insert, ladite distance h1 allant typiquement de 0,5 mm à 5 mm, de manière à former une gorge annulaire (35) de hauteur axiale au moins égale à l'épaisseur e dudit joint (4), ladite gorge annulaire (35) étant limitée à sa partie supérieure par ladite languette (32) et à sa partie inférieure typiquement par ledit filetage (33), ladite languette (32) présentant une largeur radiale 1 allant typiquement de 0,2 mm à 2 mm,
  2. b) ledit joint (4) peut être de diamètre choisi de manière à ce que ladite bordure (41) soit apte à coopérer avec ladite gorge annulaire (35), ledit joint (4) présentant, avec ladite languette et typiquement avec ledit filetage, une zone annulaire de recouvrement dite respectivement supérieure et inférieure, afin que ledit joint (4) reste solidarisé audit insert (3) avant vissage de ladite capsule (1) sur ledit goulot (5), ou après dévissage de ladite capsule (1) dudit goulot (5),
  3. c) lorsque ladite capsule (1) est vissée sur ledit goulot (5), ladite languette (32) ou une extrémité radiale flexible (320) de ladite languette (32) et ladite bordure (41) dudit joint (4) peuvent coopérer, ladite languette (32) ou ladite extrémité radiale flexible (320) exerçant sur ladite bordure (41) ladite compression radiale (6), de manière à appliquer ladite bordure contre ledit goulot (5) et typiquement contre une partie supérieure (51) dudit goulot, en formant une zone de recouvrement (60) inclinée à plus de 45° par rapport à la verticale entre ladite bordure (41) et ladite languette ou extrémité radiale (320), et ainsi à assurer l'étanchéité de ladite capsule (1) vissée audit goulot (5).
La figure 7a illustre le cas d'une zone de recouvrement faisant sensiblement un angle de 60° avec la verticale.
Dans certains cas, cet angle peut attendre 80° et même être égal à 90° dans le cas où la languette (32) est à une distance axiale suffisante de la tête intérieure (30) de l'insert afin d'être en regard de la partie verticale de ladite partie supérieure (51) du goulot (5).According to the invention, and so as to form said radial compression means (6):
  1. a) said inner skirt (31) may comprise a circular tongue (32) axially spaced a distance h1 from said inner head (30) forming the bottom of said insert, said distance h1 typically ranging from 0.5 mm to 5 mm, so as to form an annular groove (35) of axial height at least equal to the thickness e of said seal (4), said annular groove (35) being limited at its upper part by said tongue (32) and at its lower part typically by said thread (33), said tongue (32) having a radial width 1 typically ranging from 0.2 mm to 2 mm,
  2. b) said seal (4) may be of diameter chosen so that said border (41) is adapted to cooperate with said annular groove (35), said seal (4) having, with said tongue and typically with said thread, a so-called annular overlapping zone, said upper and lower, so that said seal (4) remains secured to said insert (3) before screwing said capsule (1) on said neck (5), or after unscrewing said capsule (1) of said bottleneck (5),
  3. c) when said capsule (1) is screwed onto said neck (5), said tongue (32) or a flexible radial end (320) of said tongue (32) and said border (41) of said seal (4) can cooperate, said tongue (32) or said flexible radial end (320) exerting on said rim (41) said radial compression (6), so as to apply said rim against said neck (5) and typically against an upper portion (51) of said neck forming an overlap zone (60) inclined at more than 45 ° to the vertical between said rim (41) and said radial tongue or end (320), and thereby sealing said capsule (1) screwed to said neck (5).
Figure 7a illustrates the case of an overlap zone substantially at an angle of 60 ° with the vertical.
In some cases, this angle can wait 80 ° and even be equal to 90 ° in the case where the tongue (32) is at a sufficient axial distance from the inner head (30) of the insert to be next to the vertical part of said upper part (51) of the neck (5).

Comme illustré sur la figure 1d, ledit insert (3) peut comprendre une pluralité de crans ou ergots de retenue (34), typiquement 3 crans disposés à 120° l'un de l'autre, assurant, en lieu et place dudit filetage (33), ou en complément audit filetage (33), ladite zone annulaire de recouvrement inférieure, de manière à solidariser ledit joint (4) audit insert (3).As illustrated in FIG. 1d, said insert (3) can comprise a plurality of notches or retaining lugs (34), typically 3 notches arranged at 120 ° from each other, providing, in place of said thread ( 33), or in addition to said thread (33), said zone annular lower cover, so as to secure said seal (4) to said insert (3).

Selon l'invention, ladite jupe intérieure (31) dudit insert (3) peut présenter en fond de filetage (33) une épaisseur Ej allant de 0,1 mm à 1 mm, et typiquement de 0,15 mm à 0,5 mm.
Les figures 1a et 1d représentent des inserts (3) d'épaisseur de jupe Ej égale à 0,3 mm (valeur maximum).According to the invention, said inner skirt (31) of said insert (3) may have at the bottom of the thread (33) a thickness Ej ranging from 0.1 mm to 1 mm, and typically from 0.15 mm to 0.5 mm. .
Figures 1a and 1d show inserts (3) of skirt thickness Ej equal to 0.3 mm (maximum value).

Ledit insert (3) peut être un insert fileté, typiquement moulé, en matière thermoplastique, typiquement choisie parmi le PS, le PET, le PA, les polyoléfines tels que le PE ou le PP. On utilise de préférence le PS choc.
Les inserts sont typiquement moulés par injection.Said insert (3) may be a threaded insert, typically molded, of thermoplastic material, typically selected from PS, PET, PA, polyolefins such as PE or PP. The shock PS is preferably used.
The inserts are typically injection molded.

Ladite coque (2) peut être une coque métallique en aluminium, ou en étain, en matériau métalloplastique multicouche apte à être serti.
En effet, comme illustré sur la partie droite de la figure 6, la coque métallique est sertie sous la bague de verrerie, dans la partie rétreinte (63) du goulot (5).Said shell (2) may be a metal shell of aluminum, or tin, of multilayer metalloplastic material capable of being crimped.
Indeed, as shown in the right part of Figure 6, the metal shell is crimped under the glass ring in the necking part (63) of the neck (5).

Typiquement, ledit joint (4) peut être en matériau multicouche comprenant typiquement une âme centrale C compressible en une matière thermoplastique de densité allant de 200 à 500 kg/m3, une couche inférieure I, typiquement en polyoléfine ou éventuellement en un matériau barrière à l'oxygène, destinée à être au contact de ladite boisson alcoolisée.
Son épaisseur e peut aller de 0,5 à 3 mm.Typically, said seal (4) may be of multilayer material typically comprising a compressible central core C of a thermoplastic material with a density of from 200 to 500 kg / m 3 , a lower layer I, typically made of polyolefin or optionally a barrier material to oxygen, intended to be in contact with said alcoholic beverage.
Its thickness e can range from 0.5 to 3 mm.

Selon une modalité de l'invention, ledit insert (3) peut présenter une hauteur Hi inférieure à la hauteur Hc de ladite coque (2).
La hauteur Hc de ladite coque (2) peut être au moins deux fois plus élevée que la hauteur Hi dudit insert (3), de manière à former une capsule à jupe longue, comme illustré par exemple sur la figure 6.According to one embodiment of the invention, said insert (3) may have a height Hi less than the height Hc of said shell (2).
The height Hc of said shell (2) may be at least two times higher than the height H 1 of said insert (3), so as to form a long skirt capsule, as illustrated for example in FIG. 6.

Dans ce cas, ladite coque (2) peut comprendre un moyen pour détecter ou pour faciliter une première ouverture, typiquement une ligne d'affaiblissement (22) ou une bandelette de première ouverture formée sur ladite jupe extérieure, ledit moyen étant placé à une hauteur comprise entre Hc et Hi, de manière à ce que ledit moyen soit situé au-dessus de ladite partie rétreinte (53) dudit goulot (5) quand ladite capsule (1) est vissée sur ledit goulot (5), ladite capsule (1) étant sertie audit goulot (5) par déformation locale de ladite jupe extérieure (21) de ladite coque (2) dans ladite partie rétreinte (53), de manière à ce que ladite capsule (1) ne puisse être dévissée sans rompre ladite ligne d'affaiblissement ou enlever ladite bandelette.In this case, said shell (2) may comprise means for detecting or for facilitating a first opening, typically a weakening line (22) or a strip of first opening formed on said outer skirt, said means being placed at a height between Hc and Hi, so that said means is located above said narrowed portion (53) of said neck (5) when said capsule (1) is screwed onto said neck (5), said capsule (1) being crimped to said neck (5) by local deformation of said outer skirt (21) of said shell (2) in said necking part (53), so that said capsule (1) can not be unscrewed without breaking said line weakening or removing said strip.

Selon une autre modalité de l'invention, ledit insert (3) peut présenter une hauteur Hi au moins égale à 1a hauteur Hc de ladite coque (2), comme illustré sur la figure 7b.
Dans ce cas, notamment, ledit insert (3) peut comprendre un moyen pour détecter ou pour faciliter une première ouverture, ladite jupe intérieure dudit insert comprenant à sa partie inférieure un moyen d'accrochage destiné à coopérer avec ladite partie rétreinte lorsque ladite capsule est vissée et sertie sur ledit goulot.
Sur les figures 7b et 7c, l'insert (3) comprend une ligne d'affaiblissement (36) délimitant une partie inférieure (37) comprenant une pluralité de crochets (371) aptes à coopérer avec ladite partie rétreinte (53) du goulot, partie inférieure (37) qui peut comprendre un sabot (370) coopérant avec l'extrémité inférieure de la jupe extérieure (21) de la coque (2),
Dès que la capsule (1) est dévissée, comme illustré sur la figure 7c, ladite partie inférieure (37) se sépare et apparaît visiblement en tant que telle comme témoin d'une première ouverture.According to another embodiment of the invention, said insert (3) may have a height Hi at least equal to the height Hc of said shell (2), as illustrated in FIG. 7b.
In this case, in particular, said insert (3) may comprise means for detecting or facilitating a first opening, said inner skirt of said insert comprising at its lower part a hooking means intended to cooperate with said necking portion when said capsule is screwed and crimped on said neck.
In FIGS. 7b and 7c, the insert (3) comprises a weakening line (36) delimiting a lower portion (37) comprising a plurality of hooks (371) capable of cooperating with said narrowed portion (53) of the neck, lower portion (37) which may comprise a shoe (370) cooperating with the lower end of the outer skirt (21) of the shell (2),
As soon as the capsule (1) is unscrewed, as illustrated in FIG. 7c, said lower part (37) separates and appears visibly as such as witnessing a first opening.

Selon l'invention, ladite coque (2) peut présenter un rayon de courbure RC de ladite coque à la jonction entre ladite tête extérieure et ladite jupe extérieure allant de 0,5 mm à 5 mm, et peut valoir typiquement 1,5 mm ou 2,5 mm.
Comme illustré sur la figure 4b, ladite coque (2) peut présenter un rayon de courbure RC au moins égal à 2 mm, et ledit insert (3) peut présenter un rayon de courbure RCi typiquement égal à RC, de manière à ce que la totalité de ladite coque (2) comprime ledit insert (3) ou soit au contact dudit insert (3), et qu'ainsi ledit insert (3) présente une tenue en température améliorée.
En effet, il a été observé que l'absence d'espace libre entre ladite coque et ledit insert avait une influence sur l'étanchéité dans le cas où les conditions de stockage ou de transport peuvent impliquer des conditions de température relativement élevées, comme c'est le cas dans les pays tropicaux.
La demanderesse a émis l'hypothèse que l'absence d'espace libre, et le fait que la coque constitue une frette pour l'insert, devait limiter le fluage et la relaxation des contraintes de l'insert, de sorte qu'il pouvait de ce fait conserver ses propriétés mécaniques et assurer ladite compression radiale même après passage transitoire à des températures aussi élevées que 40° à 50°C.According to the invention, said shell (2) may have a radius of curvature RC of said shell at the junction between said outer head and said outer skirt ranging from 0.5 mm to 5 mm, and may be typically 1.5 mm or 2.5 mm.
As illustrated in FIG. 4b, said shell (2) may have a radius of curvature RC at least equal to 2 mm, and said insert (3) may have a radius of curvature RCi typically equal to RC, so that the all of said shell (2) compresses said insert (3) or in contact with said insert (3), and thus said insert (3) has an improved temperature resistance.
Indeed, it has been observed that the absence of free space between said shell and said insert has an influence on the tightness in the case where the storage or transport conditions may involve relatively high temperature conditions, such as is the case in tropical countries.
The Applicant has speculated that the absence of free space, and the fact that the shell constitutes a hoop for the insert, was to limit the creep and stress relaxation of the insert, so that it could thereby maintain its mechanical properties and provide said radial compression even after transient passage at temperatures as high as 40 ° to 50 ° C.

Typiquement, ledit insert (3) et ladite coque (2) sont solidarisés par emmanchement à force et/ou par une couche adhésive solidarisant lesdites jupes extérieure (21) et intérieure (31).
Avantageusement, ladite couche adhésive est une couche de hot-melt.Typically, said insert (3) and said shell (2) are secured by press fitting and / or by an adhesive layer solidarisant said outer skirts (21) and inner (31).
Advantageously, said adhesive layer is a hot-melt layer.

Comme illustré sur les figures 5a et 5b, un élément complémentaire peut être solidarisé audit insert (3) ou audit joint (4), ledit élément complémentaire destiné à rester solidarisé audit goulot (5) après dévissage de ladite capsule (1), ledit élément formant typiquement un verseur (7).
Les figures 5a et 5b illustrent le cas où le verseur (7) est réversiblement solidarisé à la partie centrale (40) du joint (4).
Le verseur (7) peut comprendre une paroi typiquement verticale (70) apte à pénétrer dans ledit goulot (5), et une partie supérieure évasée (71) servant à verser le contenu de la bouteille, la paroi (70) étant dotée extérieurement d'une pluralité d'ailettes (72) de solidarisation étanche du verseur au goulot (5). Ce verseur (7) comprend des bras (73) qui coopèrent par encliquetage réversible avec une pièce (8). Ladite pièce (8) comprend un pied (80) scellé à la partie centrale du joint (40) et une tige (81) portant une tête (82) qui coopère avec l'extrémité des ailettes (72).As illustrated in FIGS. 5a and 5b, a complementary element may be secured to said insert (3) or to said seal (4), said complementary element intended to remain secured to said neck (5) after unscrewing said capsule (1), said element typically forming a pourer (7).
Figures 5a and 5b illustrate the case where the pourer (7) is reversibly secured to the central portion (40) of the seal (4).
The pourer (7) may comprise a typically vertical wall (70) adapted to penetrate into said neck (5), and a flared upper portion (71) for pouring the contents of the bottle, the wall (70) being externally provided with a plurality of fins (72) for sealing the spout to the neck (5). This pourer (7) comprises arms (73) which cooperate by reversible clipping with a part (8). Said piece (8) comprises a foot (80) sealed to the central part of the seal (40) and a rod (81) carrying a head (82) which cooperates with the end of the fins (72).

EXEMPLES DE REALISATIONEXAMPLES OF REALIZATION

Toutes les figures correspondent à des exemples de réalisation selon l'invention.
Tous les inserts (3) ont été fabriqués par injection moulage de PS choc. Toutes les coques métalliques ont été fabriquées par emboutissage de bande d'aluminium de 0,21 mm d'épaisseur, de manière à obtenir des coques de hauteur Hc typiquement égale à 60 mm.
Les joints ont été obtenus à partir d'un matériau du commerce de marque CORELEN ® en bande d'une épaisseur e de 1,2 mm.
Ce matériau comprend une âme en PE expansé ou EPE de 1 mm d'épaisseur, sa structure complète multicouche pouvant étant représentée par EPE / papier kraft / Sn / PVDC, la couche de PVDC étant au contact du liquide, des couches intermédiaires d'adhésifs solidarisant si nécessaire les couches adjacentes.
On a aussi utilisé pour les essais des joints du type EPE / PE / PVDC / PE ou encore PE / PVDC / PE / EPE / PE / PVDC / PE.All the figures correspond to exemplary embodiments according to the invention.
All inserts (3) were made by injection molding PS shock. All the metal shells were manufactured by stamping 0.21 mm thick aluminum strip, so as to obtain shells Hc height typically equal to 60 mm.
The seals were obtained from CORELEN ® branded trade material in webs with a thickness of 1.2 mm.
This material comprises a core of PE expanded or EPE 1 mm thick, its complete multilayer structure being represented by EPE / kraft paper / Sn / PVDC, the PVDC layer being in contact with the liquid, intermediate layers of adhesives solidarising if necessary the adjacent layers.
EPE / PE / PVDC / PE or PE / PVDC / PE / EPE / PE / PVDC / PE type joints were also used for testing.

Pour assembler les inserts dans les coques, on a déposé un filet de hot-melt sur l'intérieur de ladite jupe extérieure (21) et on a introduit à force ledit insert (3) - comprenant typiquement ledit joint - jusqu'à ce que ladite tête intérieure (30) vienne en butée contre ladite tête extérieure (20).
Les essais de capsulage ont été réalisés sur des bouteilles avec bagues de verrerie référencées BVP 30H60 et BVS30H60.To assemble the inserts in the shells, a hot-melt thread was deposited on the inside of said outer skirt (21) and said insert (3) - typically comprising said seal - was force-applied until said inner head (30) abuts said outer head (20).
The capping tests were carried out on bottles with glass rings referenced BVP 30H60 and BVS30H60.

A) Inserts et capsules selon les figures 1a à 1d :A) Inserts and capsules according to FIGS. 1a to 1d:

On a fabriqué des inserts (3) selon les figures la à 1d, inserts de 29,3 mm de diamètre extérieur et de 11,1 mm de hauteur Hi. L'épaisseur Ej de la jupe intérieure (31) à fond de filet a été prise égale à 0,3 mm, comme valeur nominale maximum.
Ces inserts (3) comprennent une languette circulaire (32) située à une distance axiale h1 de 2,8 mm, ladite languette présentant une largeur radiale 1 de 1,55 mm - voir la figure 1b. Cette languette circulaire (32) présente une extrémité ou partie intérieure amincie (320) apte à être fléchie vers le haut lors du vissage de la capsule sur le goulot.
Le rayon de courbure RCi de ces inserts (3) a été pris égal à 0,79 mm.
La figure la représente une première variante d'insert - le joint (4) étant absent - dans laquelle ladite languette circulaire (32) et l'extrémité supérieure des filetages (33) définit une gorge annulaire (35) de 1,4 mm de largeur axiale.
Sur la variante représentée sur la figure 1d, la gorge annulaire (35) est définie à sa partie inférieure par 3 crans ou ergots (34) disposés à 120° l'un de l'autre, un seul étant représenté sur la figure 1d.Inserts (3) according to Figs. 1a-1d were manufactured, inserts having a diameter of 29.3 mm and a height of 11.1 mm Hi. The thickness Ej of the bottom threaded inner skirt (31) was taken as 0.3 mm as the maximum nominal value.
These inserts (3) comprise a circular tongue (32) located at an axial distance h1 of 2.8 mm, said tongue having a radial width 1 of 1.55 mm - see FIG. 1b. This circular tongue (32) has a tapered end or inner portion (320) adapted to be bent upwards when the capsule is screwed onto the neck.
The radius of curvature RCi of these inserts (3) was taken equal to 0.79 mm.
FIG. 1a shows a first insert variant - the seal (4) being absent - in which said circular tongue (32) and the upper end of the threads (33) define an annular groove (35) of 1.4 mm axial width.
On the variant shown in Figure 1d, the annular groove (35) is defined at its bottom by 3 notches or lugs (34) disposed at 120 ° from each other, only one being shown in Figure 1d.

B) Inserts et capsules selon les figures 2a à 2c :B) Inserts and capsules according to FIGS. 2a to 2c:

Un insert (3) avec son joint (4) a été également schématisé sur la figure 2a, le même insert a été représenté après vissage sur un goulot (5) sur la figure 2b afin d'illustrer ladite compression radiale (6).
La figure 2c illustre de manière détaillée et agrandie, la compression radiale (6) de la bordure (41) du joint (4) par la languette circulaire (32) de l'insert (3) enserré dans la coque typiquement métallique (2).
Dans ce cas, la zone de recouvrement (60) entre la bordure (41) et la languette (32 par son extrémité radiale (320) est sensiblement verticale, de sorte que la direction de compression (61) fait sensiblement un angle de 90° avec la verticale.An insert (3) with its seal (4) has also been shown schematically in Figure 2a, the same insert has been shown after screwing on a neck (5) in Figure 2b to illustrate said radial compression (6).
FIG. 2c illustrates in a detailed and enlarged manner, the radial compression (6) of the edge (41) of the joint (4) by the circular tongue (32) of the insert (3) contained in the typically metallic shell (2) .
In this case, the overlap area (60) between the border (41) and the tongue (32 at its radial end (320) is substantially vertical, so that the compression direction (61) is substantially 90 ° with the vertical.

C) Inserts et capsules selon les figures 4a et 4b :C) Inserts and capsules according to FIGS. 4a and 4b:

On a fabriqué un insert (3) ayant un rayon de courbure RCi de 2,5 mm. Ce même insert a été utilisé pour fabriquer deux capsules (1) différant par le rayon de courbure RC de la coque métallique (2).
La coque (2) de la figure 4a présentait un rayon de courbure RC1 de 1,5 mm, alors que la coque (2) de la figure 4b présentait un rayon de courbure RC2 de 2,5 mm. Ainsi, un espace libre (23) était présent à l'intérieur de ladite coque, entre ladite coque et ledit insert dans le cas de la coque selon la figure 4a, alors que la coque le la figure 4b ne présentait pas d'espace (23).An insert (3) having a radius of curvature RCi of 2.5 mm was manufactured. This same insert was used to manufacture two capsules (1) differing by the radius of curvature RC of the metal shell (2).
The shell (2) of Figure 4a had a radius of curvature RC1 of 1.5 mm, while the shell (2) of Figure 4b had a radius of curvature RC2 of 2.5 mm. Thus, a free space (23) was present inside said shell, between said shell and said insert in the case of the shell according to FIG. 4a, whereas the shell FIG. 4b did not have any space ( 23).

D) Capsules avec verseur obtenues selon les figures 5a et 5b :D) Capsules with pourer obtained according to FIGS. 5a and 5b:

On a formé par injection moulage de PE un verseur (7) et une pièce (8) servant de support temporaire pour le verseur, et permettant le centrage automatique du verseur par rapport au goulot. La pièce (8) a été thermoscellée à la partie centrale (40) du joint (4) qui comprenait une couche inférieure également en PE.
Ladite pièce (8) est solidarisée audit verseur (7) moyennant un effort axial minime, mais typiquement suffisant pour que ledit verseur ne se sépare pas de ladite pièce (8) sous son propre poids, afin que ledit joint (4) et ladite pièce (8) restent solidaires dudit insert (3) lors de l'ouverture de ladite capsule, le verseur (7) restant solidaire du goulot grâce aux forces de frottement engendrées par lesdites ailettes (72).A pourer (7) and a piece (8) acting as temporary support for the pourer have been formed by injection molding PE, and allowing the pourer to be automatically centered with respect to the neck. The workpiece (8) was heat sealed to the central portion (40) of the seal (4) which included a lower layer also of PE.
Said piece (8) is secured to said pourer (7) with a minimal axial force, but typically sufficient for said pourer does not separate from said piece (8) under its own weight, so that said seal (4) and said piece (8) remain integral with said insert (3) during the opening of said capsule, the pourer (7) remaining integral with the neck through the friction forces generated by said fins (72).

E) Inserts et capsules obtenus selon la figure 7a :E) Inserts and capsules obtained according to FIG. 7a:

On a fabriqué des inserts et capsules telles que, après vissage et capsulage, la direction de compression radiale (61) fasse un angle avec la verticale compris entre 45° et 90°.Inserts and capsules have been made such that, after screwing and capping, the radial compression direction (61) is at an angle to the vertical of between 45 ° and 90 °.

F) Inserts et capsules obtenus selon les figures 7b et 7c :F) Inserts and capsules obtained according to FIGS. 7b and 7c:

Ces inserts sont moulés avec une pluralité de pattes formant des crochets (371), aptes à coopérer avec la partie rétreinte (53) située au-dessous de la contre-bague (54) du goulot (5), de sorte que, dans ce cas, il n'y a pas de sertissage de la jupe extérieure (21) dans ladite partie rétreinte (53).These inserts are molded with a plurality of tabs forming hooks (371), able to cooperate with the necking part (53) located below the counter-ring (54) of the neck (5), so that in this case case, there is no crimping of the outer skirt (21) in said narrowed portion (53).

RESULTATS OBTENUSRESULTS OBTAINED

Les capsules (1) obtenues ont été vissées sur goulots comme illustré sur la partie gauche de la figure 6, et serties au goulot, dans le cas des essais A à E, comme illustré sur la partie droite de la figure 6.The capsules (1) obtained were screwed on the necks as illustrated on the left part of FIG. 6, and crimped on the neck, in the case of tests A to E, as illustrated on the right part of FIG.

D'une part, la demanderesse a observé, comme illustré sur les figures 2c, 3a et 3b, que les capsules selon l'invention étaient peu sensibles, tant en ce qui concerne l'étanchéité finale qu'en ce concerne le couple de dévissage, aux conditions de vissage et de sertissage, c'est-à-dire aux conditions de capsulage en général, et qu'elles étaient également peu sensibles aux variations de hauteur des bouteilles capsulées.
Ainsi, contrairement à ce qui était observé avec les capsules à vis de l'état de la technique, l'étanchéité et le couple d'ouverture pour dévisser la capsule restent sensiblement constants durant toute une production et quelle que soit l'origine des bouteilles en verre utilisées.
Pour mesurer l'étanchéité des capsules, on remplit, sous la pression atmosphérique et à 20 °C, des bouteilles de 75 cm3 de contenance avec un vin rouge à 12° d'alcool, de manière à avoir un volume libre de 13 cm3 au-dessus du niveau du vin. Après avoir vissé et serti les capsules sur les bouteilles, les bouteilles sont réchauffées progressivement et on note la température à laquelle apparaissent les premières fuites, compte tenu de l'augmentation de pression dans la bouteille, pression mesurée par ailleurs. Pression et Température de fuite Pression de fuite Température de fuite Capsule STELUXE ® selon l'art antérieur avec joint à compression axiale 1,40 bar soit 0,140 MPa 45°C Capsule selon l'invention selon les figures 1a et 4b 2,75 bar soit 0,275 MPa 53,5°C On the one hand, the Applicant has observed, as illustrated in Figures 2c, 3a and 3b, that the capsules according to the invention were insensitive, both with regard to the final seal as regards the unscrewing torque , the conditions of screwing and crimping, that is to say capping conditions in general, and they were also insensitive to the height variations capsulated bottles.
Thus, contrary to what was observed with the screw caps of the state of the art, the seal and the opening torque to unscrew the capsule remain substantially constant throughout a production and regardless of the origin of the bottles glass used.
To measure the tightness of the capsules, 75 cm 3 bottles of capacity with a red wine at 12 ° of alcohol are filled under atmospheric pressure and at 20 ° C. so as to have a free volume of 13 cm. 3 above the wine level. After having screwed and crimped the capsules on the bottles, the bottles are gradually heated up and the temperature at which the first leaks appear, taking into account the increase in pressure in the bottle, pressure measured elsewhere. Leakage pressure and temperature Leakage pressure Leak temperature STELUXE ® capsule according to the prior art with axial compression seal 1.40 bar is 0.140 MPa 45 ° C Capsule according to the invention according to FIGS. 1a and 4b 2.75 bar or 0.275 MPa 53.5 ° C

De manière très significative, toutes choses étant égales par ailleurs, les capsules selon l'invention présentent une étanchéité très supérieure à celle des capsules de l'état de la technique.In a very significant way, all things being equal, the capsules according to the invention have a seal much higher than that of the capsules of the state of the art.

En outre, des essais de stockage à la température ambiante et à une températures de 50° ont montré que ce couple d'ouverture se situe dans une plage allant de 11 à 13 Lbs/inch, soit de 1,24 à 1,47 N/m, alors que la capsule selon l'état de la technique nécessite un couple bien plus élevé : Couple d'ouverture en Lbs/inch et en N/m A température ambiante (après passage en étuve à la température de fuite) Capsule STELIJXE ® selon l'art antérieur De 14 à 17 Lbs/inch Soit de 1,58 à 1,92 N/m Capsule selon l'invention Selon les figures 1a et 4b de 11 à 13 Lbs/inch soit de 1,24 à 1,47 N/m In addition, storage tests at room temperature and at temperatures of 50 ° have shown that this opening torque is in a range of 11 to 13 Lbs / inch, or 1.24 to 1.47 N / m, whereas the capsule according to the state of the art requires a much higher torque: Opening torque in Lbs / inch and N / m At room temperature (after passing in an oven at the temperature of leakage) STELIJXE ® capsule according to prior art From 14 to 17 Lbs / inch Or 1.58 to 1.92 N / m Capsule according to the invention According to FIGS. 1a and 4b from 11 to 13 Lbs / inch or from 1.24 to 1.47 N / m

D'autre part, ayant augmenté la fiabilité du capsulage, la demanderesse a observé que les capsules selon l'invention permettaient d'augmenter d'environ 10 % les cadences de capsulage sans risque de voir apparaître des défauts d'étanchéité.On the other hand, having increased the reliability of the capping, the Applicant has observed that the capsules according to the invention allowed to increase by about 10% capping rates without risk of appearing leaks.

En outre, la demanderesse a observé qu'il était possible d'obtenir une étanchéité élevée sans que cela nécessite un couple de première ouverture élevé, comme avec les capsules de l'état de la technique.
Ainsi, même les personnes âgées sont à même de dévisser les capsules selon l'invention.In addition, the Applicant has observed that it is possible to obtain a high seal without this requiring a high first opening torque, as with the capsules of the state of the art.
Thus, even the elderly are able to unscrew the capsules according to the invention.

Enfin, la demanderesse a observé que les capsules (1) selon l'invention pouvaient présenter une étanchéité améliorée à "haute température", avec des capsules du type de la figure 4b dans lesquelles ladite coque et ledit insert présentent tous deux un rayon de courbure relativement élevé. Les capsules selon l'invention peuvent ainsi être utilisées partout dans le monde, quelles que soient les conditions météorologiques locales.Finally, the Applicant has observed that the capsules (1) according to the invention could have an improved "high temperature" sealing with capsules of the type of FIG. 4b in which both said shell and said insert have a radius of curvature. relatively high. The capsules according to the invention can thus be used anywhere in the world, whatever the local weather conditions.

AVANTAGES DE L'INVENTIONADVANTAGES OF THE INVENTION

Comme cela apparaît dans ce qui précède, les capsules à vis selon l'invention présentent de grands avantages par rapport aux capsules de l'état de la technique, alors qu'elles ne présentent pas de surcoût de fabrication et qu'elles font appel aux mêmes techniques et aux mêmes matériaux de production que celles et ceux de l'art antérieur.
Ces avantages peuvent être résumés dans les différents points qui suivent :

  • étanchéité élevée et peu dépendante des variations dimensionnelles des bouteilles et des conditions de capsulage,
  • étanchéité élevée dans toute la plage température requise,
  • couple de première ouverture constant et de niveau sensiblement inférieur à celui rencontré avec les capsules de l'état de la technique,
  • augmentation des cadences de capsulage.
  • utilisation à la fois pour le bouchage de bouteilles de vin et de bouteilles d'alcools, spiritueux et apéritifs.
As appears in the foregoing, the screw caps according to the invention have great advantages over the capsules of the state of the art, while they have no additional manufacturing cost and they involve same techniques and the same production materials as those of the prior art.
These advantages can be summarized in the following points:
  • high sealing and little dependence of dimensional variations of bottles and capping conditions,
  • high sealing throughout the required temperature range,
  • torque of first constant opening and level substantially lower than that encountered with the capsules of the state of the art,
  • increased capping rates.
  • use both for corking bottles of wine and bottles of spirits, spirits and aperitifs.

LISTE DES REPERESLIST OF REFERENCES

Capsule de bouchage à visScrew closure cap 11 Direction axiale verticaleVertical axial direction 1010 Coque métalliqueMetal hull 22 Tête extérieureOuter head 2020 Jupe extérieureOuter skirt 2121 Ligne d'affaiblissementLine of weakening 2222 Espace libreFree space 2323 Insert plastiquePlastic insert 33 Tête intérieureInner head 3030 Jupe intérieureInner skirt 3131 Languette circulaireCircular tongue 3232 Extrémité radiale flexibleFlexible radial end 320320 FiletageThread 3333 Cran ou ergot de retenue du jointNotch or seal retainer 3434 Gorge annulaireRing groove 3535 Ligne de pontsBridge line 3636 Partie inférieureLower part 3737 TalonHeel 370370 CrochetHook 371371 Jointjoint 44 Partie centraleCentral part 4040 Bordure périphériquePeripheral border 4141 Goulot d'une bouteilleNeck of a bottle 55 BuvantDrinking 5050 Partie supérieureThe top part 5151 Partie filetée ou filetageThreaded part or thread 5252 Partie rétreinte de sertissageCrimp part 5353 Contre-bagueAgainst-ring 5454 Compression radiale de 41 contre 51Radial compression of 41 against 51 66 Zone de recouvrement entre 41 et 320Coverage area between 41 and 320 6060 Direction de compressionCompression direction 6161 Verseurpouring 77 Paroi verticaleVertical wall 7070 Partie supérieure évaséeFlared upper part 7171 Ailettes de solidarisation au goulot 5Fins of solidarity to the neck 5 7272 Bras de solidarisation réversible à 8Reversible fastening arm at 8 7373 Pièce support de 7 scellée ou soudée à 40Support piece of 7 sealed or welded to 40 88 PiedFoot 8080 Tigestem 8181 TêteHead 8282

Claims (17)

  1. Screw closing cap (1), designed to cooperate with a neck (5) of a receptacle, typically a bottle designed to contain an alcoholic drink such as wine, the said neck (5) forming a mouth lip (50) on the upper part and comprising an outer thread (52) on its sidewall and a recessed part (53) on which the said cap (1) will be crimped, the said cap (1) comprising a) an outer shell (2), b) an insert (3), contained in the said shell (2) and fixed to the said shell (2) comprising an inner head (30) and an inner skirt (31) provided with an inner thread (33) designed to cooperate with the outer thread (52) of the said neck (5), and c) a seal (4), the said seal (4) comprising a central part (40) part and a peripheral part or edge (41), wherein the said insert (3) comprises a means (6) of radially compressing the said seal (4) in contact with the said neck (5), such that when the said closing cap (1) is screwed to the said neck (5), the said edge (41) is compressed radially between the said insert (3) and the said neck (5), and thus the seal and the opening torque of the said cap (1) are to a large extent independent of the axial position of the said cap (1) with respect to the said neck (5),
    characterised in that the said radial compression means (6) is formed as follows:
    a) the said inner skirt (31) comprises a circular tab (32) with an axial spacing equal to h1 from the said inner head (30) forming the bottom of the said insert, so as to form an annular groove (35) with an axial height equal to at least the thickness e of the said seal (4), the said annular groove (35) being limited at its top part by the said tab (32), the said tab (32) having a radial width l,
    b) the diameter of the said seal (4) may be chosen such that the said edge (41) is capable of cooperating with the said annular groove (35), the said seal (4) having an annular overlap area with the said tab, so that the said seal (4) remains fixed to the said insert (3) before the said cap (1) is screwed onto the said neck (5), or after the said cap (1) is unscrewed from the said neck (5),
    c) when the said cap (1) is screwed onto the said neck (5), the said tab (32) or a flexible radial end (320) of the said tab (32) and the said border (41) of the said seal (4) cooperate, the said tab (32) or the said flexible radial end (320) applying the said radial compression (6) on the said border (41), so as to apply the said border in contact with the said neck (5), forming an overlap area (60) inclined at more than 45° from the vertical (41) between the said tab or the said radial end (320), thus sealing the said cap (1) screwed to the said neck (5).
  2. Cap according to claim 1 in which the said insert (3) comprises a plurality of notches or retaining pins (34), typically 3 notches arranged at 120° from each other, so as to provide the said lower annular overlap area instead of or in addition to the said thread (33), so as to fix the said seal (4) to the said insert (3).
  3. Cap according to either claim 1 or 2, in which the thickness of the said inner skirt (31) of the said insert (3) at the bottom of the thread (33) varies from 0.1 mm to 1 mm, and typically from 0.15 mm to 0.5 mm.
  4. Cap according to any one of claims 1 to 3 in which the said insert (3) is a threaded and typically moulded insert made of a thermoplastic material-, typically chosen from among PS, PET, PA, and polyolefins such as PE or PP.
  5. Cap according to any one of claims 1 to 4 in which the said shell (2) is an aluminium or tin metal shell, or may be made of a crimpable multilayer metalloplastic material.
  6. Cap according to any one of claims 1 to 5 in which the said seal (4) is made of a multilayer material, typically including a compressible central core C made of a thermoplastic material with a density varying from 200 to 500 kg/m3, a lower layer I typically made of polyolefin or possibly an oxygen barrier material designed to come into contact with the said alcoholic drink.
  7. Cap according to any one of claims 1 to 6 in which the said insert (3) has a height Hi less than the height Hc of the said shell (2.
  8. Cap according to claim 7 in which the height Hc of the said shell (2) is at least twice as high as the height Hi of the said insert (3) so as to form a cap with a long skirt.
  9. Cap according to claim 8 in which the said shell (2) comprises an outer skirt (21) and a means of detecting or facilitating a first opening, typically a line of weakness (22) or a first opening strip formed on the said outer skirt, the said means being located at a height between Hc and Hi, such that the said means is located above the said recessed part (53) of the said neck (5) when the said cap (1) is screwed onto the said neck (5), the said cap (1) being crimped to the said neck (5) by local deformation of the said outer skirt (21) of the said shell (2) in the said recessed part (53), such that the said cap (1) cannot be unscrewed without breaking the line of weakness or removing the said strip.
  10. Cap according to any one of claims 1 to 6 in which the height Hi of said insert (3) is equal to at least the height Hc of the said shell (2).
  11. Cap according to claim 10 in which the said insert (3) includes a means of detecting or facilitating a first opening, the said inner skirt of the said insert including an attachment means in its lower part designed to cooperate with the said recessed part when the said cap is screwed and crimped to the said neck.
  12. Cap according to any one of claims 1 to 11 in which the said shell (2) comprises an outer head and an outer skirt, the radius of curvature RC of the said shell at the junction between the said outer head and the said outer skirt varying from 0.5 mm to 5 mm, and typically equal to 1.5 mm or 2.5 mm.
  13. Cap according to claim 12 in which the said shell (2) has a radius of curvature RC equal to at least 2 mm, and the said insert (3) may have a radius of curvature RCi typically equal to RC, such that the entire part of the said shell compresses the said insert or is in contact with the said insert, and the said insert thus has an improved resistance at high temperature.
  14. Cap according to any one of claims 1 to 13 in which the said insert and the said shell are fixed by force fitting and / or by an adhesive layer fixing the said outer skirt (21) and inner skirt (31) together.
  15. Cap according to any one of claims 1 to 14 in which a complementary element is fixed to the said insert (3) or to the said seal (4), the said complementary element being designed to remain fixed to the said neck (5) after the said cap (1) has been unscrewed, the said element typically forming a pouring spout (7).
  16. Cap according to any one of claims 1 to 15 wherein the said annular groove (35) is limited at its lower part by the said thread (33), the said seal (4) having an annular overlap area with the said thread (33).
  17. Cap according to any one of claims 1 to 16 wherein the said distance h1 is between 0,5 mm and 5 mm and wherein the radial width l of the said tab (32) is between 0,2 mm and 2 mm.
EP04767424A 2003-06-24 2004-06-23 Bottle closure with improved thread Expired - Lifetime EP1638853B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04767424T PL1638853T3 (en) 2003-06-24 2004-06-23 Bottle closure with improved thread

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0307610A FR2856663B1 (en) 2003-06-24 2003-06-24 IMPROVED SCREW CAPSULE
PCT/FR2004/001568 WO2005000697A1 (en) 2003-06-24 2004-06-23 Bottle closure with improved thread

Publications (2)

Publication Number Publication Date
EP1638853A1 EP1638853A1 (en) 2006-03-29
EP1638853B1 true EP1638853B1 (en) 2007-10-31

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US (1) US7922018B2 (en)
EP (1) EP1638853B1 (en)
AR (1) AR044698A1 (en)
AT (1) ATE376963T1 (en)
BR (1) BRPI0411848B1 (en)
CA (1) CA2528891C (en)
DE (1) DE602004009797T2 (en)
ES (1) ES2295918T3 (en)
FR (1) FR2856663B1 (en)
MX (1) MXPA05014093A (en)
NZ (1) NZ544318A (en)
PL (1) PL1638853T3 (en)
PT (1) PT1638853E (en)
RU (1) RU2340524C2 (en)
WO (1) WO2005000697A1 (en)
ZA (1) ZA200600117B (en)

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US20070095782A1 (en) 2007-05-03
WO2005000697B1 (en) 2005-04-21
FR2856663B1 (en) 2005-07-22
WO2005000697A1 (en) 2005-01-06
CA2528891A1 (en) 2005-01-06
NZ544318A (en) 2009-04-30
MXPA05014093A (en) 2006-03-02
RU2006101857A (en) 2006-06-10
EP1638853A1 (en) 2006-03-29
DE602004009797T2 (en) 2008-08-28
AR044698A1 (en) 2005-09-21
ES2295918T3 (en) 2008-04-16
DE602004009797D1 (en) 2007-12-13
FR2856663A1 (en) 2004-12-31
RU2340524C2 (en) 2008-12-10
PL1638853T3 (en) 2008-05-30
US7922018B2 (en) 2011-04-12
PT1638853E (en) 2008-02-06
ATE376963T1 (en) 2007-11-15
BRPI0411848B1 (en) 2014-10-29
CA2528891C (en) 2012-03-06
ZA200600117B (en) 2007-04-25
BRPI0411848A (en) 2006-08-29

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