EP1360118B1 - Verschluss mit befestigungsmittel für eine eingeformte dichtung - Google Patents

Verschluss mit befestigungsmittel für eine eingeformte dichtung Download PDF

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Publication number
EP1360118B1
EP1360118B1 EP02706854A EP02706854A EP1360118B1 EP 1360118 B1 EP1360118 B1 EP 1360118B1 EP 02706854 A EP02706854 A EP 02706854A EP 02706854 A EP02706854 A EP 02706854A EP 1360118 B1 EP1360118 B1 EP 1360118B1
Authority
EP
European Patent Office
Prior art keywords
seal
cap
projection
assembly according
axis
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
EP02706854A
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English (en)
French (fr)
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EP1360118A1 (de
Inventor
Philippe Nusbaum
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.)
Bericap SARL
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Bericap SARL
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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

Definitions

  • the invention relates to an assembly comprising a stopper and a joint by pouring into the bottom of the stopper, as well as a method for carrying out of such a plug.
  • the invention relates more particularly to plastic plugs comprising a cylindrical skirt and a transverse end wall, the seal being cast against said transverse end wall.
  • the deposited material is hot, liquid or pasty, and therefore spreads on the inner face of the transverse wall.
  • the seal is then compressed against the transverse wall using a tool. It then occurs a physicochemical bonding the seal cast on the inner face of the transverse wall.
  • the adhesion of the seal to the transverse wall is not optimal. he happens in fact that the seal is detached from the said wall, and can escape of the stopper, in particular during the storage of the cap-seal assembly and transport for mounting on a container neck. The seal between the cap and the container neck on which it is mounted can no longer be assured.
  • US 4,697,716 discloses a plug having a groove on the face its transverse wall and intended to receive a seal cast in this throat.
  • the groove is delimited by two substantially axial walls: on the one hand the skirt of the cap and on the other hand an annular projection.
  • the annular projection may have a surface having a certain inclination with respect to the transverse wall of the plug, so as to allow the attachment of the seal and to avoid its axial displacement towards the opening of the plug.
  • annular projection is placed with respect to the axis of the plug of way that, once the seal is poured into the groove, and when the cap is screwed on a container neck, the seal is located opposite the rim of the neck of the container.
  • the projection serves both to hook the seal and sealing the plug. Because of this, the characteristics dimensioning of the projection must be precise, the plug molding being therefore made more complex.
  • the document GB 1 224 669 discloses a cap according to the preamble of the appended claim 1, having an annular projection on the internal face of its transverse wall, the projection being intended to serve as a means for attaching a seal to the bottom of the cap .
  • This document also describes a method according to the preamble of claim 13. A seal is poured into the bottom of the plug and then stamped, so as to match the shape of the inner face of the transverse wall and the projection. The seal thus has an annular boss at the projection.
  • the seal is intended to come into contact with the rim of a container neck at level of this boss. Therefore, the projection is placed so as to be in view of the rim of a container neck when the plug is associated with said neck.
  • stamping of the seal must also be carried out accurately, the surface state of the gasket at the level of the protrusion must make it possible to guarantee a good sealing. This stamping therefore constitutes an additional operation generating additional costs and longer manufacturing times.
  • document GB 2 111 965 As for the document GB 2 111 965, it describes a stopper, provided with lips sealing means for cooperating with the rim of a container neck. When the cap is placed on the neck, the lips are bent and applied against this rim, so as to seal. In order to ensure a good despite the rigidity of the lips, document GB 2 111 965 provides for cover the lips with a thin film of a softer material allowing to improve the contact between the lips and the rim of the neck.
  • the flexible material covers the lips forming a ring at the bottom of the plug.
  • the ring has a curved surface or a wedding shape perfectly the shape of the projections.
  • GB 2 111 965 is to improve the sealing of caps with sealing lips but without seal. It does not offer an effective solution to the problem of attachment of a seal cast against the transverse wall of a plug.
  • the object of the invention is to solve the problems posed by the prior art by providing a stopper - associated with a cast seal - in which the functions of attachment of the seal and sealing are dissociated.
  • the projection comprises at least one inclined face of an acute angle relative to the axis of the plug so that when the seal is placed in the plug, at least one zone of said seal is included in a zone latch located axially between the transverse wall and a part of the said projection.
  • the projection has, in axial section, the shape of at least one trapezium whose small base is located towards the free end of the said projection, said trapezium being such that one of the two angles adjacent to the small base is acute.
  • One of the two angles adjacent to the small base is between 40 ° and 80 °, especially close to 60 °.
  • the projection has, in axial section, the shape at least one trapezium whose large base is located towards the free end of the said projection.
  • said trapezoid has an axis of symmetry substantially parallel to the axis of the plug.
  • the projection is annular and substantially axis confused with the axis of the cap.
  • the cap may comprise two annular projections substantially concentric, of axis substantially coincident with the axis of the plug, the free ends of the two projections being for example axially offset one compared to each other.
  • the projection may have an axial height less than half to one third of the thickness of the transverse wall of the plug.
  • the invention relates to a set of parts cap and a seal, as previously described, and on the other hand a collar of container or receptacle having a neck, the receptacle being empty or at least partially filled with some content.
  • FIG. 1 shows a plug 1 of axis 2, the plug 1 being for example made of plastic.
  • the plug 1 comprises firstly a transverse end wall 3, substantially discoidal, and a cylindrical skirt 4 protruding substantially perpendicular to the transverse wall 3.
  • the cylindrical skirt 4 comprises, on its outer face 5, notches 6 intended for facilitate the screwing and unscrewing of the cap 1 by a user, and, on his inner face 7, a thread 8 intended to cooperate with the external thread of a container neck not shown.
  • the plug 1 also comprises an annular band 9 of tamper, connected at the free end 10 of the cylindrical skirt 4 by frangible bridges 11 or by a line of weaker resistance.
  • the tamper-evident band 9 has latching projections 12, directed towards the axis 2 of the plug 1, and intended for cooperate with the neck of a container to ensure the maintenance of the band at the neck of said container when, during the first opening of the said container, the bridges 11 are broken.
  • the plug 1 comprises locking elements 13, extending axially from the free end 10 of the cylindrical skirt 4 to and inside the tamper band 9, over a length such that the free end 14 of the said blocking element 13 is located, radially, opposite the band 9.
  • the locking elements 13 are located towards the inside of the cap 1 with respect to the tamper band. 9. Their role is to guarantee the integrity of the tamper-evident band 9 and the bridges 11 during assembly of the cap 1 on the neck of the container for which it is intended.
  • the stopper 1 finally comprises a seal 15, put in place by casting against the transverse wall 3, which will be described in more detail later in the description.
  • the transverse wall 3 of the plug 1 has, on its inner face 16, one or several projections 17 forming hooking means of the seal 15, thus preventing the separation of said seal 15 of the transverse wall 3.
  • the projections 17 are made by molding, with the stopper 1. They present a relatively low axial height, in particular less than half or even third, the thickness of the transverse wall 3 of the plug 1. In addition, the width protrusions 17 in cross section is also reduced.
  • the projections 17 are annular, of axis substantially coincident with the axis 2 of the cap 1.
  • Figure 4 shows a projection 17 according to the first embodiment, in axial section.
  • the projection 17 has, in axial section, the shape of a trapezium, or rather of two trapezes symmetrical with respect to the axis of said protrusion 17.
  • the large base 18 of the trapezium is substantially merged with the wall transverse 3, the small base 19 of the trapezium constituting the free end of the 17.
  • the small base 19 may be of very small length, so that the trapeze is like a triangle.
  • a first face 20 of the trapezium is inclined relative to the transverse wall 3 of a angle ⁇ obtus, for example between 130 ° and 170 °, especially close to 150 °.
  • a second face 21 of the trapezium, opposite the first face 20, is inclined relative to the transverse wall 3 by an acute angle ⁇ , for example between 40 ° and 80 °, in particular close to 60 °.
  • the angle between the transverse wall 3 and the second face 21 of the trapezium is round.
  • the transverse wall 3 of the cap 1 comprises three projections 17 annular, substantially concentric, axis substantially confused with the axis 2 of the plug 1.
  • a first annular projection 17 has a radius substantially equal to half the radius of the transverse wall 3.
  • Two additional projections 17, of close radius, are arranged towards the periphery of the transverse wall 3.
  • the transverse wall 3 of the plug 1 comprises three projections 17 annular, substantially concentric, axis substantially confused with the axis 2 of the plug 1.
  • a first annular projection 17 has a radius substantially equal to half the radius of the transverse wall 3.
  • a protrusion 17 additional is arranged towards the periphery of the transverse wall 3.
  • FIG. 5 a second embodiment of FIG. making projections 17.
  • the projection 17 has, in axial section, the shape of a trapezium, or rather of two trapezes symmetrical with respect to the axis of said protrusion 17.
  • the small base 22 of the trapezium is substantially merged with the wall transverse 3, the large base 23 of the trapezium constituting the free end of the projection 17.
  • the trapezium has an axis of symmetry 24 substantially parallel to the axis of the cap 1.
  • the faces 25, 26 of the trapezium distinct from the bases 22, 23 are inclined by relative to the transverse wall 3 of an acute angle ⁇ , for example between 40 ° and 80 °, especially close to 60 °.
  • the establishment of the seal 15 is by depositing a certain volume of material at bottom of said plug 1. This deposit can be made from an extruder or a hot melt gun.
  • the seal 15 thus extends substantially over the entire inner face 16 of the wall transverse 3 of the plug 1, and has the shape of a disk, thick substantially constant over its entire surface.
  • the seal can then be compressed against the transverse wall by means of a tool, leaving an impression on the seal 15 as illustrated in FIG. 2.
  • the volume of material deposited is sufficient for the thickness of the seal 15 to be greater at the axial height of the projections 17, even after compression.
  • This stamping makes it possible to give the seal 15 a shape perfectly adapted to the shape of the neck of the container to which the plug 1 is intended to be associated, in order to guarantee a very good seal.
  • the stamping makes it possible to penetrate the projections 17 into the material constituting the seal 15.
  • stamping of the seal 15, corresponding to a preferred embodiment of the invention, however, is optional, since it is not essential to the attachment of the seal 15 against the transverse wall 3 of the plug 1 with the help of protrusions 17.
  • the outer face of the seal 15 - that is to say the face of the seal 15 opposite the transverse wall 3 - is substantially flat, the exception possibly of the peripheral extreme zone of the joint 15 (without this has consequences that affect the water resistance).
  • the projections 17 having an axial height less than the thickness of the seal 15, they do not protrude outside the joint 15, but remain embedded and contained in the inside of the seal 15. As a result, the projections 17 do not deform the face exterior of the joint 15, the latter having a good quality surface condition, to ensure a good contact with the rim of the container neck, and therefore a good seal.
  • the method for producing the plug 1 is considerably simplified, and the dimensional requirements of the mold used considerably reduced.
  • the configuration of the projection 17 is such that there is a zone 27 - called zone hooking - included axially between the transverse wall 3 and the said projection 17. Part of the material deposited at the bottom of the cap and flowing against the transverse wall 3 is placed in the attachment zone 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Seal Device For Vehicle (AREA)
  • Dowels (AREA)
  • Slide Fasteners (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Cable Accessories (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Claims (14)

  1. Einheit, die Folgendes umfasst:
    einen Stopfen (1) des Typs mit einer transversalen Endwand (3) und einer zylindrische Verkleidung (4), die an ihrer internen Fläche (7) ein Gewinde (8) aufweist, das dazu dient, gemeinsam mit einem zusätzlichen externen Gewinde von einem Behälterhals zu wirken;
    und eine Dichtung (15), die gegen die interne Fläche (16) von der transversalen Wand (3) des Stopfens (1) platziert ist, wobei die Dichtung (15) durch Guss angebracht wurde und sich annährend über die gesamte interne Fläche (16) von der transversalen Wand (3) erstreckt; wobei die transversale Wand (3) des Stopfens (1) an ihrer internen Fläche (16) zumindest eine Auskragung (17) aufweist, die ein Haftmittel für die Dichtung (15) bildet, wobei die Auskragung (17) von der Dichtung (15) umhüllt und bedeckt ist, dadurch gekennzeichnet, dass die Dichtung die allgemeine Forme einer Scheibe aufweist, die eine annähernd konstante Dicke aufweist, wobei die axiale Höhe der Auskragung (17) kleiner als die die Dicke von der Dichtung (15) ist.
  2. Einheit nach Anspruch 1, dadurch gekennzeichnet, dass die Auskragung (17) zumindest eine Fläche (21, 25, 27) umfasst, die derart um einen Winkel (β, γ) geneigt ist, der spitz im Verhältnis zur Achse (2) des Stopfens (1) ist, dass sich, wenn die Dichtung (15) im Stopfen (1) platziert ist, zumindest eine Zone der Dichtung (15) in einer Haftzone (27) befindet, die axial zwischen der transversalen Wand (3) und einem Teil der Auskragung (17) liegt.
  3. Einheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Auskragung (17) im Axialschnitt die Form von zumindest einem Trapez einnimmt, von dem sich die kleine Basis (19) zum freien Ende von der Auskragung (17) befindet, wobei das Trapez derart ist, dass einer der beiden Winkel (β), die an die kleine Basis (19) angrenzen, spitz ist.
  4. Einheit nach Anspruch 3, dadurch gekennzeichnet, dass der eine der beiden Winkel (β), die an die kleine Basis (19) angrenzen, zwischen 40° und 80° liegt, und insbesondere bei 60° liegt.
  5. Einheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Auskragung (17) im Axialschnitt die Form von zumindest einem Trapez einnimmt, von dem sich die große Basis (23) zum freien Ende von der Auskragung (17) befindet.
  6. Einheit nach Anspruch 5, dadurch gekennzeichnet, dass das Trapez eine Symmetrieachse (24) aufweist, die annähernd parallel zur Achse (2) des Stopfens (1) ist.
  7. Einheit nach einem der vorhergehenden Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Auskragung (17) ringförmig ist, wobei die Achse der Auskragung (17) annähernd mit der Achse (2) des Stopfens (1) übereinstimmt.
  8. Einheit nach einem der vorhergehenden Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie zwei ringförmige annähernd konzentrische Auskragungen (17) umfasst, deren Achse annähernd mit der Achse (2) des Stopfens (1) übereinstimmt.
  9. Einheit nach Anspruch 8, dadurch gekennzeichnet, dass die freien Enden (19) der beiden Auskragungen (17) axial gegeneinander verschoben sind.
  10. Einheit nach einem der vorhergehenden Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Auskragung (17) eine axiale Höhe aufweist, die kleiner als die Hälfte der Dicke von der transversalen Wand des Stopfens ist.
  11. Einheit nach einem der vorhergehenden Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Auskragung (17) eine axiale Höhe aufweist, die kleiner als das Drittel der Dicke von der transversalen Wand des Stopfens ist.
  12. Einheit, die einerseits einen Stopfen (1) und eine Dichtung (15) nach einem der vorhergehenden Ansprüche 1 bis 11, und andererseits einen Behälterhals oder einen Behälter mit einem Hals umfasst, wobei der Behälter leer ist oder zumindest teilweise mit einem bestimmten Inhalt gefüllt ist.
  13. Verfahren zur Realisierung einer Stopfen (1)-Dichtung (15) Einheit nach einem der vorhergehenden Ansprüche 1 bis 11, das die folgenden Schritte umfasst: - es wird per Formguss ein Stopfen (1) realisiert, der zumindest eine Auskragung (17) aufweist; - am Boden des Stopfens (1) wird derart eine bestimmte Menge eines Materials, das die Dichtung (15) in flüssiger oder dickflüssiger Form bildet, abgelegt, dass sich das Material über die interne Fläche (16) der transversalen Wand (3) des Stopfens (1) verteilt und die Auskragung (17) umhüllt und bedeckt, und dadurch gekennzeichnet, dass die Menge ausreicht, damit die Dicke der Dichtung größer als die axiale Höhe der Auskragung (17) ist.
  14. Verfahren zur Realisierung einer Stopfen (1)-Dichtung (15) Einheit nach Anspruch 13, dadurch gekennzeichnet, dass, sobald das Material, das die Dichtung (15) bildet, am Boden des Stopfens (1) abgelegt ist, das Material gegen die transversale Wand (3) des Stopfens (1) gepresst wird.
EP02706854A 2001-02-15 2002-02-13 Verschluss mit befestigungsmittel für eine eingeformte dichtung Expired - Lifetime EP1360118B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0102084A FR2820722B1 (fr) 2001-02-15 2001-02-15 Bouchon comprenant des moyens d'accrochage d'un joint coule
FR0102084 2001-02-15
PCT/FR2002/000553 WO2002064440A1 (fr) 2001-02-15 2002-02-13 Bouchon comprenant des moyens d'accrochage d'un joint coule

Publications (2)

Publication Number Publication Date
EP1360118A1 EP1360118A1 (de) 2003-11-12
EP1360118B1 true EP1360118B1 (de) 2005-09-28

Family

ID=8860068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02706854A Expired - Lifetime EP1360118B1 (de) 2001-02-15 2002-02-13 Verschluss mit befestigungsmittel für eine eingeformte dichtung

Country Status (7)

Country Link
EP (1) EP1360118B1 (de)
AT (1) ATE305418T1 (de)
DE (1) DE60206360T2 (de)
ES (1) ES2250621T3 (de)
FR (1) FR2820722B1 (de)
HU (1) HUP0303032A3 (de)
WO (1) WO2002064440A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1224669A (en) * 1967-09-06 1971-03-10 Armstrong Cork Co Container closure having a moulded-in liner
NL8204885A (nl) * 1981-12-24 1983-07-18 Anchor Hocking Corp Voeringloze vacuumsluiting van kunststof.
US4697716A (en) * 1982-07-06 1987-10-06 Owens-Illinois, Inc. Closures with cast sealing gasket

Also Published As

Publication number Publication date
WO2002064440A1 (fr) 2002-08-22
FR2820722B1 (fr) 2003-07-25
FR2820722A1 (fr) 2002-08-16
ES2250621T3 (es) 2006-04-16
ATE305418T1 (de) 2005-10-15
DE60206360T2 (de) 2006-06-22
EP1360118A1 (de) 2003-11-12
DE60206360D1 (de) 2005-11-03
HUP0303032A2 (hu) 2003-12-29
HUP0303032A3 (en) 2004-04-28

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