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EP3532398B1 - Garniture d'étanchéité - Google Patents

Garniture d'étanchéité Download PDF

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Publication number
EP3532398B1
EP3532398B1 EP17797754.3A EP17797754A EP3532398B1 EP 3532398 B1 EP3532398 B1 EP 3532398B1 EP 17797754 A EP17797754 A EP 17797754A EP 3532398 B1 EP3532398 B1 EP 3532398B1
Authority
EP
European Patent Office
Prior art keywords
protrusion
sealing insert
height
lip
insert according
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.)
Active
Application number
EP17797754.3A
Other languages
German (de)
English (en)
Other versions
EP3532398A1 (fr
Inventor
Federico MORSELLI
Antonino LO PICCOLO
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.)
Pelliconi and C SpA
Original Assignee
Pelliconi and C SpA
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Publication date
Application filed by Pelliconi and C SpA filed Critical Pelliconi and C SpA
Publication of EP3532398A1 publication Critical patent/EP3532398A1/fr
Application granted granted Critical
Publication of EP3532398B1 publication Critical patent/EP3532398B1/fr
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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
    • B65D41/10—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts
    • B65D41/12—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts made of relatively stiff metallic materials, e.g. crown caps

Definitions

  • This invention relates to a sealing insert, applicable to a cap, in particular of the so-called crown type.
  • the sealing insert is especially suited for use in caps for bottles of the aluminium type.
  • the geometrical tolerances and the shape with a large radius of curvature of the upper edge of the neck are such that the sealing gasket does not couple perfectly with the neck of any type of aluminium bottle, thus determining an ineffective sealing over time.
  • a need strongly felt by firms packaging liquid products in aluminium bottles is that of having a closure device for the bottles, in particular of the crown type, which achieves an effective seal which is durable over time with any type of aluminium bottle currently on the market.
  • Document JPS63177262 discloses a sealing for a cap which has two protruding portion, an inner one and an outer one, as in the preamble of appended claim 1.
  • the outer protruding portion is defined by two straight lines.
  • the aim of this invention is to satisfy the above-mentioned need, in particular to provide a sealing insert for a cap of aluminium bottles, in particular for a cap of the crown type, which achieves an effective seal which is durable over time.
  • the sealing insert 1 has axial symmetry.
  • the closure cap 3 comprises a metallic body, preferably made of aluminium, which has a housing 2 made in it.
  • the housing 2 of the closure cap 3 is delimited by a top inner surface 6 and by a lateral surface 7.
  • closure cap 3 will hereinafter be referred to also as cap 3.
  • the cap 3 is illustrated in Figures 3 and 4 , respectively, in a configuration wherein it is not applied to a bottle 4 and in a configuration wherein it is applied to the bottle.
  • the cap 3 is of the crown type and is therefore suitable for closing bottles 4 (made of aluminium) with a neck without a thread.
  • the bottle 4, illustrated partially in Figure 4 at the upper neck and limited to a portion, is designed for the cap 3 to be applied to it, and comprises a neck 5 and a mouth 8 designed to be sealingly closed by the cap 3.
  • the closure insert 1 comprises:
  • the sealing portion 10 comprises a first lip 20A radially outside and a second lip 20B radially inside connected together.
  • the first lip 20A and the second lip 20B are separated from each other by a separation region RS having a diameter R1 of between 22.8 mm and 25 mm.
  • the diameter R1 is between 23 mm and 24.5 mm.
  • the diameters are compatible with the use on metallic bottles (preferably aluminium): in particular, it has been found experimentally that the diameters ensure a perfect centring on the neck of the bottle.
  • the first lip 20A is defined by a first protrusion 21A and the second lip 20B is defined by a second protrusion 21B, the second protrusion 21B protruding from the first surface 12 more than the first protrusion 21A.
  • the first protrusion 21A is formed by two surfaces, a first radially external straight surface 22 and a second radially internal curved surface 23.
  • the second protrusion 21B is formed by two surfaces, a first radially external curved surface 24 and a second radially internal straight surface 25.
  • the second radially internal curved surface 23 of the first protrusion 21A and the second radially internal curved surface 25 of the second protrusion 21B are joined in a transition area in which they define a concave profile 26 downwards.
  • a concavity is defined in the transition area.
  • a sum of a radial extension (that is, measured in radial direction X) of the first protrusion 21A and of the second protrusion 21B is between 1 mm and 2 mm (preferably between 1.2 mm and 1.9 mm).
  • the second protrusion 21B protrudes relative to the first surface 12 for a height of between 0.8 mm and 2 mm.
  • the second protrusion 21B can protrude relative to the first surface 12 for a height of between 0.8 mm and 1.5 mm.
  • the first protrusion 21A protrudes with reference to the first surface 12 by height of between 55% and 90% relative to the height of the projection of the second protrusion 21B with reference to the first surface 12.
  • the first protrusion 21A can protrude with reference to the first surface 12 by height of between 65% and 85% relative to the height of the projection of the second protrusion 21B with reference to the first surface 12.
  • the first protrusion 21A can protrude with reference to the first surface 12 by height of between 70% and 80% relative to the height of the projection of the second protrusion 21B with reference to the first surface 12.
  • the first surface 12 of the bottom 9 is a curved surface.
  • the second surface 13 of the bottom 9 is a curved surface.
  • the cap 3 (to which is applied the insert 1) comprises a metal body 27, having a bottom wall 28 and a side wall 29, and is provided with a plurality of corrugations 30 on the side wall 29 and a housing 2.
  • the sealing insert 1 is made preferably as a single part.
  • the sealing insert 1 is made from a polymer, chosen from the group including PP (polypropylene), PE (polyethylene) and composites thereof, or from PVC (polyvinyl chloride).
  • PP polypropylene
  • PE polyethylene
  • PVC polyvinyl chloride
  • the sealing insert 1 is made preferably with a punch die comprising a cavity which is shaped to match the insert.
  • the profile of the sealing insert 1 can be made very easily on an industrial scale since it has straight and arcuate portions and, in geometrical terms, is relatively simple to construct.
  • the insert 1 undergoes deformation as a result of the compressive action applied on it by the outer surface of the neck 5 of the bottle 4 and by the side surface 29 of the housing 2 of the cap 3.
  • An advantage of this invention is that it provides a sealing insert 1 for use with metallic caps for containers, in particular for bottles 4, which is simple to manufacture and at the same time ensures an optimum seal, in particular on bottles made of metallic material (e.g. aluminium, steel).
  • metallic material e.g. aluminium, steel
  • the profile with a double protrusion (21A; 21B) and in particular the fact that the second protrusion 21B protrudes relative to the first surface 12 of the bottom 9 more than the first protrusion 21A ensures an optimum seal on the neck 4 of the aluminium bottle, which as is evident from Figure 4 is particularly rounded.
  • the sealing insert 1 therefore guarantees the sealed closing of the bottle even in the presence of liquid under pressure.
  • Label R2 in Figure 1 indicates the diameter of maximum protrusion of the lip 20B and R3 indicates the internal diameter in which the lip 20B terminates.
  • the diameter R2 is in the range of 22 mm +- 1 mm whilst the diameter R3 is in the range of 21.5 mm +- 1 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (11)

  1. Garniture d'étanchéité (1) à utiliser avec des capsules de fermeture métalliques (3) de bouteilles en aluminium (4) comprenant :
    - un fond (9) doté d'une première surface (12) conçue pour se mettre en butée de manière étanche contre une embouchure (8) d'une bouteille (4) et une seconde surface (13), opposée à la première surface (12),
    - une partie d'étanchéité (10) conçue pour être déformée élastiquement et située sur la périphérie (11) du fond (9), dans laquelle la partie d'étanchéité (10) comprend une première lèvre (20A) radialement externe et une seconde lèvre (20B) radialement interne reliées l'une à l'autre, la première lèvre (20A) étant définie par une première protubérance (21A) et la seconde lèvre (20B) étant définie par une seconde protubérance (218), la seconde protubérance (218) dépassant de la première surface (12) davantage que la première protubérance (21A), la garniture d'étanchéité (1) étant caractérisée en ce que la première lèvre (20A) et la seconde lèvre (20B) sont séparées l'une de l'autre par une zone de séparation (RS) ayant un diamètre (R1) compris entre 22,8 et 25 mm et en ce que la première protubérance (21A) est formée par deux surfaces, une première surface rectiligne (22) radialement externe et une seconde surface incurvée (23) radialement interne.
  2. Garniture d'étanchéité selon la revendication 1, caractérisée en ce que la seconde protubérance (218) est formée de deux surfaces, une première surface incurvée (24) radialement externe et une seconde surface rectiligne (25) radialement interne.
  3. Garniture d'étanchéité selon la revendication 2, dans laquelle la seconde surface incurvée (23) radialement interne de la première protubérance (21A) et la seconde surface incurvée (25) radialement interne de la seconde protubérance (21B) sont jointes dans une zone de transition dans laquelle elles définissent un profil concave (26) vers le bas.
  4. Garniture d'étanchéité selon l'une quelconque des revendications précédentes, dans laquelle la seconde saillie (21B) dépasse par rapport à la première surface (12) d'une hauteur comprise entre 0,8 et 2 mm.
  5. Garniture d'étanchéité selon l'une des revendications précédentes, dans laquelle la seconde protubérance (21B) dépasse par rapport à la première surface (12) d'une hauteur comprise entre 0,8 et 1,5 mm.
  6. Garniture d'étanchéité selon l'une quelconque des revendications précédentes, dans laquelle la première protubérance (21A) dépasse en référence à la première surface (12) d'une hauteur comprise entre 55 et 90 % par rapport à la hauteur du débordement de la seconde protubérance (21b) en référence à la première surface (12) .
  7. Garniture d'étanchéité selon la revendication précédente, dans laquelle la première protubérance (21A) dépasse en référence à la première surface (12) d'une hauteur comprise entre 65 et 85 % par rapport à la hauteur du débordement de la seconde protubérance (21b) en référence à la première surface (12).
  8. Garniture d'étanchéité selon la revendication précédente, dans laquelle la première protubérance (21A) dépasse en référence à la première surface (12) d'une hauteur comprise entre 70 et 80 % par rapport à la hauteur du débordement de la seconde protubérance (21b) en référence à la première surface (12).
  9. Garniture d'étanchéité selon l'une quelconque des revendications précédentes, dans laquelle la première surface (12) du fond (9) est une surface incurvée.
  10. Garniture d'étanchéité selon l'une quelconque des revendications précédentes, dans laquelle la seconde surface (13) du fond (9) est une surface incurvée.
  11. Capsule de fermeture (3) pour bouteilles caractérisée en ce qu'elle comprend un corps métallique (27), comportant une paroi de fond (28) et une paroi latérale (29), pourvue d'une pluralité d'ondulations (30) sur la paroi latérale (29) et un logement (2), et une garniture d'étanchéité (1) selon l'une quelconque des revendications 1 à 10 pouvant être introduite dans le logement (2) du corps métallique (27).
EP17797754.3A 2016-10-28 2017-10-20 Garniture d'étanchéité Active EP3532398B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102016000109434A IT201600109434A1 (it) 2016-10-28 2016-10-28 Inserto di chiusura.
PCT/IB2017/056529 WO2018078497A1 (fr) 2016-10-28 2017-10-20 Garniture d'étanchéité

Publications (2)

Publication Number Publication Date
EP3532398A1 EP3532398A1 (fr) 2019-09-04
EP3532398B1 true EP3532398B1 (fr) 2020-12-02

Family

ID=58163033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17797754.3A Active EP3532398B1 (fr) 2016-10-28 2017-10-20 Garniture d'étanchéité

Country Status (4)

Country Link
EP (1) EP3532398B1 (fr)
ES (1) ES2856230T3 (fr)
IT (1) IT201600109434A1 (fr)
WO (1) WO2018078497A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB682363A (en) * 1951-01-12 1952-11-05 Gora Lee Corp Container closure
JPS5746766A (en) * 1980-09-02 1982-03-17 Crown Cork Japan Vessel cover with improved liner
JPS63177262U (fr) * 1987-05-07 1988-11-16

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3532398A1 (fr) 2019-09-04
WO2018078497A1 (fr) 2018-05-03
IT201600109434A1 (it) 2018-04-28
ES2856230T3 (es) 2021-09-27

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