EP0508668A1 - Fermetures - Google Patents

Fermetures Download PDF

Info

Publication number
EP0508668A1
EP0508668A1 EP92302841A EP92302841A EP0508668A1 EP 0508668 A1 EP0508668 A1 EP 0508668A1 EP 92302841 A EP92302841 A EP 92302841A EP 92302841 A EP92302841 A EP 92302841A EP 0508668 A1 EP0508668 A1 EP 0508668A1
Authority
EP
European Patent Office
Prior art keywords
closure
container
neck
sealing
flange
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.)
Withdrawn
Application number
EP92302841A
Other languages
German (de)
English (en)
Inventor
Nigel Thompson
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.)
Arconic Closure Systems International UK Ltd
Original Assignee
Metal Closures Ltd
MCG Closures Ltd
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 Metal Closures Ltd, MCG Closures Ltd filed Critical Metal Closures Ltd
Publication of EP0508668A1 publication Critical patent/EP0508668A1/fr
Withdrawn legal-status Critical Current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
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck

Definitions

  • This invention relates to closures and more particularly to plastics closures.
  • a closure moulded from a plastics material comprising a top, a depending skirt formed internally with a screw-thread, and an annular sealing portion depending from the underside of the top and spaced inwardly from the skirt, said sealing portion including a plug part for sealingly engaging the radially inner surface of the neck of a container to which the closure is to be applied, a radially outwardly projecting flange spaced away from the top for abutment with the upper end of the neck of such container and an annular hinge part between the flange and the top about which the plug part and the flange can pivot relative to the top.
  • the annular hinge part is preferably waisted.
  • the preferred plastics material is e.g. a suitably resilient polyethylene or polypropylene.
  • said plug part has a generally frusto-conical radially outer surface, the diameter of said surface increasing progressively in a direction towards the top. Additionally or alternatively the plug part may have one or more circumferential sealing ribs on said radially-outer surface.
  • Stop means may be provided for limiting the radially outward pivotal movement of the sealing portion about said annular hinge.
  • the stop means may be constituted by an annular formation disposed in the space between the skirt and the sealing portion and adapted for engagement by said flange in said outward pivotal movement of the sealing portion.
  • Stop means where provided, is preferably in the form of a series of circumferentially spaced projections formed on the underside of the top in the annular space between the skirt and the sealing portion for engagement by said flange.
  • the flange may be buttressed by having a chamfered upper surface and the projections may have a complementary chamfered surface for abutment with the chamfered surface of the flange.
  • the projections may be shaped to come into abutment with a radially outer part of the top of the neck of the container to limit tightening movement of the closures.
  • the projections may be shaped to limit both movement of the closure on to the container and outward pivotal movement of the flange.
  • a closure 10 which is moulded in one piece from a resilient plastics material.
  • the closure comprises a top 11, a depending skirt 12 formed with an internal screw-thread 13, and an annular sealing portion 14 projecting downward from the underside of the top.
  • the neck 15 of the container to which the closure is to be applied has an internal surface 16 which is substantially cylindrical, an external surface formed with a screw-thread 17 corresponding to the screw-thread 13 on the closure and a cylindrical surface 18 above the screw-thread.
  • the sealing portion 14 includes an annular plug part 20, a radially outwardly projecting annular flange 24 and an annular hinge part 28 between the flange 24 and the top.
  • Plug part 20 has a radially outer surface 21 which is conically inclined downwardly and inwardly at an included angle of about 10° in this instance, and a radially inner surface 22 which is substantially cylindrical.
  • the lower surface 25 of flange 24 extends substantially at right angles to the central axis 26 of the closure.
  • the upper surface 27 of flange 24 is inclined upward and radially inward.
  • the annular hinge part 28 is waisted in section.
  • the region of the skirt 12 adjoining the top 11 is thickened at 30 on its radially inner side, and a sealing fin 31 projects radially inward flush with the lower face of the thickened part 30 and somewhat below the lower face 25 of flange 24.
  • a number of circumferentially-spaced stops 43 are formed at the junction between the top 11 and the skirt 12, projecting into the annular gap between the thickened part 30 of the skirt and the sealing portion 14. In one example there are eight such stops 43 evenly spaced apart at 45°C intervals and each having an angular extent of approximately 5°about the axis 26.
  • Each stop has a radially inner face 44 spaced from the waisted part 28, an axial face 45 disposed at a higher level than the surface 25 of flange 24, and a chamfered face 46 extending substantially parallel to or at a slightly lesser angle to the horizontal than the inclined top face 27 of the flange 24.
  • the lower end of the plug part 20 enters easily into the neck of the container and assists in centralising the closure relative to the container in the initial stage.
  • the upper portions of the frusto-conical surface 21 come into sealing engagement with the internal surface 16 of the neck and the end 32 of the neck comes into sealing abutment with the flange 24.
  • the flange 24 is rendered stiff by the buttressing effect arising from the shape of its upper surface 27, so that as the closure is tightened, this abutment causes the flange and the sealing portion 14 to pivot radially outward about the annular hinge 28 so as to pivot the plug part into tighter sealing engagement in the neck and to increase the axial length of sealing contact between the frusto-conical face 21 and the inner surface 16 of the neck.
  • the annular fin 31 comes into engagement with the outer corner portion of the neck to form a secondary seal.
  • the closure is particularly useful in relation to containers for liquids under gaseous pressure, such as carbonated beverages, since the pressure in the container acts in a radially outward direction on the part of the internal surface of the plug part between the top and the lowest point of sealing contact between the plug part 20 and the internal surface of the neck and thus operates to tighten the seal.
  • the top 11 of the closure is made stiff to minimise upward deflection of the top under such gaseous pressure.
  • the radially outer face of the plug part 20 has a surface portion 50, which is conically inclined downwardly and inwardly.
  • the angle of inclination is substantially 15° to the inner surface of the plug part in the illustrated construction.
  • the upper end of the portion 50 defines a sealing rib 52, the area 53 between the sealing rib 52 and the annular flange 24 being relieved.
  • An annular inwardly projecting rib 49 on the inner surface of the skirt provides a radially inwardly facing sealing surface 55 located at a distance from the top 11 axially greater than the distance of the sealing rib 52 from the top 11.
  • the rib has its side 54 nearer the top of buttress form and has its side 49 remote from the top facing axially away from the top.
  • the top 11 is made stiff to minimise upward deflection of the top under gaseous pressures within the container.
  • the closure In operation, the closure is first guided into generally correct alignment with the container by the annular conical portion 50.
  • surface 55 acts as a final guide to ensure correct alignment of the closure before the main sealing rib 52 reaches the neck of the container.
  • the correct alignment before engagement of the sealing rib 52 and the container ensures that the main sealing rib is not subjected to any adverse initial application forces. Possible damage to the sealing portion 14 during application of the closure is therefore minimised.
  • the sealing portion 14 pivots radially inwards about the waisted part 28 until the annular flange 24 engages the top of the neck of the container.
  • the sealing rib 49 forms a secondary seal against the cylindrical radially outer surface 18 of the container neck.
  • Figure 6 shows a modified form of the closure of Figures 3 to 5 and illustrates two forms of stop 56, 57 designed to prevent over-tightening of the closure.
  • the stops are circumferentially spaced about the axis 26.
  • stop 56 If the type of stop 56 is incorporated in the closure then when the closure is fully applied the stops will abut the upper surface of the annular flange 24 and limit the radially outward pivotal movement of the sealing portion 14 about the waisted part 28 and also prevent over-tightening. Stops 57 differ slightly in operation in that they prevent over-tightening by limiting downward movement of the closure relative to the container.
  • All of the closures described herein may have a tamper-evident ring if desired.
  • closures described are particularly but by no means exclusively useful in association with plastics containers.
  • the exposed parts of the neck finish of plastics containers are prone to scratch marks, occurring for example in handling, and such marks may prevent formation of an effective seal where they extend across a part of the finish intended to be a sealing surface.
  • the stiff top 11 has the incidental advantage of enabling the closure to be used for containers intended to be stored in so-called half-crates which leave the upper halves of the containers unprotected.
  • half-crates of containers When half-crates of containers are stacked one upon the other, the weight falls upon the tops of the closures of the containers in the lower half-crates, and it is consequently desirable that the tops should be stiff to withstand the resulting stresses.
EP92302841A 1991-04-10 1992-03-31 Fermetures Withdrawn EP0508668A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9107515 1991-04-10
GB919107515A GB9107515D0 (en) 1991-04-10 1991-04-10 Closures

Publications (1)

Publication Number Publication Date
EP0508668A1 true EP0508668A1 (fr) 1992-10-14

Family

ID=10692951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92302841A Withdrawn EP0508668A1 (fr) 1991-04-10 1992-03-31 Fermetures

Country Status (7)

Country Link
EP (1) EP0508668A1 (fr)
JP (1) JPH05124667A (fr)
AU (1) AU655011B2 (fr)
BR (1) BR9201281A (fr)
GB (1) GB9107515D0 (fr)
MX (1) MX9201641A (fr)
ZA (1) ZA922502B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000034133A2 (fr) * 1998-12-07 2000-06-15 Tjandra Limanjaya Capsule de fermeture
WO2000056616A1 (fr) * 1999-03-18 2000-09-28 Closures And Packaging Services Limited Dispositif de fermeture dote d'un element d'etancheite
EP1273524A2 (fr) 1999-09-15 2003-01-08 Tjandra Limanjaya Bouchon de fermeture
US6581792B1 (en) 1998-12-07 2003-06-24 Tjandra Limanjaya Closure cap
US7308988B2 (en) 2002-12-02 2007-12-18 Kao Corporation Cap
WO2009153154A1 (fr) * 2008-05-27 2009-12-23 Christ, Alexander Dispositif de fermeture pour un récipient
CN113165777A (zh) * 2018-07-20 2021-07-23 Kw容器公司 用于改进对塑料容器和盖组件中的液体的获取的系统
US11591141B2 (en) 2020-07-08 2023-02-28 Veraseal Pty Limited Closures and vessels with closures

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4140678B2 (ja) * 2000-11-30 2008-08-27 株式会社吉野工業所 ヒンジキャップ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069040A (en) * 1961-08-15 1962-12-18 Drackett Co Container closure
US3944104A (en) * 1974-11-25 1976-03-16 Consumers Glass Company Limited Threaded wine bottle stopper
FR2340865A1 (fr) * 1976-02-11 1977-09-09 Astra Plastique Perfectionnements aux dispositifs pour l'obturation de recipients sous pression
US4090631A (en) * 1976-02-03 1978-05-23 Jean Grussen Screw-type bottle cap having improved sealing properties
EP0076778A1 (fr) * 1981-10-05 1983-04-13 Crown Obrist AG Bouchon de fermeture en matière plastique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS519538U (fr) * 1974-07-09 1976-01-23
DE3139526A1 (de) * 1981-10-05 1983-04-21 Albert Obrist AG, 4153 Reinach, Basel Verschlusskappe aus kunststoffmaterial
EP0093690A1 (fr) * 1982-05-04 1983-11-09 Crown Obrist AG Fermeture pour récipient
JPH01139348A (ja) * 1987-11-11 1989-05-31 Dainippon Ink & Chem Inc 合成樹脂製容器とキャップとの組み合わせ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069040A (en) * 1961-08-15 1962-12-18 Drackett Co Container closure
US3944104A (en) * 1974-11-25 1976-03-16 Consumers Glass Company Limited Threaded wine bottle stopper
US4090631A (en) * 1976-02-03 1978-05-23 Jean Grussen Screw-type bottle cap having improved sealing properties
FR2340865A1 (fr) * 1976-02-11 1977-09-09 Astra Plastique Perfectionnements aux dispositifs pour l'obturation de recipients sous pression
EP0076778A1 (fr) * 1981-10-05 1983-04-13 Crown Obrist AG Bouchon de fermeture en matière plastique

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000034133A2 (fr) * 1998-12-07 2000-06-15 Tjandra Limanjaya Capsule de fermeture
WO2000034133A3 (fr) * 1998-12-07 2000-10-12 Tjandra Limanjaya Capsule de fermeture
US6581792B1 (en) 1998-12-07 2003-06-24 Tjandra Limanjaya Closure cap
WO2000056616A1 (fr) * 1999-03-18 2000-09-28 Closures And Packaging Services Limited Dispositif de fermeture dote d'un element d'etancheite
US6772894B1 (en) 1999-03-18 2004-08-10 Closures And Packaging Services Limited Closure with seal member
EP1273524A2 (fr) 1999-09-15 2003-01-08 Tjandra Limanjaya Bouchon de fermeture
US7308988B2 (en) 2002-12-02 2007-12-18 Kao Corporation Cap
US8348075B2 (en) 2002-12-02 2013-01-08 Kao Corporation Cap
WO2009153154A1 (fr) * 2008-05-27 2009-12-23 Christ, Alexander Dispositif de fermeture pour un récipient
RU2522101C2 (ru) * 2008-05-27 2014-07-10 Кликлок Гмбх Запорное устройство для резервуара
US8820553B2 (en) 2008-05-27 2014-09-02 Cliqloc Gmbh Closure device for a container
CN113165777A (zh) * 2018-07-20 2021-07-23 Kw容器公司 用于改进对塑料容器和盖组件中的液体的获取的系统
CN113165777B (zh) * 2018-07-20 2023-10-13 Kw容器公司 用于改进对塑料容器和盖组件中的液体的获取的系统
US11591141B2 (en) 2020-07-08 2023-02-28 Veraseal Pty Limited Closures and vessels with closures

Also Published As

Publication number Publication date
AU1470892A (en) 1992-10-15
BR9201281A (pt) 1992-12-01
ZA922502B (en) 1992-11-25
AU655011B2 (en) 1994-12-01
MX9201641A (es) 1992-10-01
GB9107515D0 (en) 1991-05-29
JPH05124667A (ja) 1993-05-21

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