EP0481981B2 - Deckel ohne innenbekleidung für kohlensäurehaltige getränkebehälter - Google Patents

Deckel ohne innenbekleidung für kohlensäurehaltige getränkebehälter Download PDF

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Publication number
EP0481981B2
EP0481981B2 EP89907042A EP89907042A EP0481981B2 EP 0481981 B2 EP0481981 B2 EP 0481981B2 EP 89907042 A EP89907042 A EP 89907042A EP 89907042 A EP89907042 A EP 89907042A EP 0481981 B2 EP0481981 B2 EP 0481981B2
Authority
EP
European Patent Office
Prior art keywords
closure
container
rib
neck
frusto
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
EP89907042A
Other languages
English (en)
French (fr)
Other versions
EP0481981A4 (de
EP0481981A1 (de
EP0481981B1 (de
Inventor
Rodney Malcolm Druitt
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.)
Closures and Packaging Services Ltd
Original Assignee
Closures and Packaging Services 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25624087&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0481981(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Closures and Packaging Services Ltd filed Critical Closures and Packaging Services Ltd
Priority claimed from AU37737/89A external-priority patent/AU627746B2/en
Publication of EP0481981A4 publication Critical patent/EP0481981A4/de
Publication of EP0481981A1 publication Critical patent/EP0481981A1/de
Publication of EP0481981B1 publication Critical patent/EP0481981B1/de
Application granted granted Critical
Publication of EP0481981B2 publication Critical patent/EP0481981B2/de
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
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1672—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by manual actuation of the closure or other element
    • B65D51/1688—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure

Definitions

  • the invention relates to a closure for a container having an externally screw threaded neck, said closure being molded in one piece from a resilient plastics material, and comprising a top and a skirt dependent from the top, which skirt has on an internal surface a complementary screw thread, an annular sealing rib disposed radially inward of the skirt projecting downwardly from the top lying adjacent or abutting with the skirt, said rib having a first portion and a second frusto-conical portion extending from said first portion radially inward to terminate in an annular free edge, the free edge of the frusto-conical portion having a diameter that is smaller than the outside diameter of the neck of the container to which the closure is to be attached, such that the neck of the container, during threaded engagement of the closure with the the neck, will be engaged by the frusto-conical portion of the rib.
  • Such a closure is known from US-A-3 203 571.
  • This closure has a top and a depending cylindrical skirt or sidewall as well as an integral, downwardly extending, annular seal forming flange adjacent the junction of the top and the sidewall.
  • the sealing flange comprises an inwardly tapering frusto-conical flange defining a radially inner frusto-conical surface forming a generally V-shaped recess between the flange and the top of the cap.
  • the flange may be thickened adjacent the top of the cap in which case a radially outer surface of the flange may have, when seen in cross-section, a non-linearity between a first frusto-conical surface adjacent the top and a second such surface extending from the termination of the first annular surface to the free edge of the flange. Whether the rib is so thickened or not the flange has only a single radially inner frusto-conical surface extending from the top of the closure to the free edge of the flange.
  • the sealing flange Upon being applied to a container the sealing flange is pushed against the top of the closure by contact with the neck of the container. A seal is said to be formed between the free end of the neck of the container and the radially outer side of the sealing flange.
  • British Patent GB-A-788 148 is shown a one-piece closure including a continuous lip within the top positioned to engage against the annular end face of the opening and provide a seal between the lip and the free end edge of the container with the lip curling over at its free edge.
  • this closure provides a seal only against the free end edge of the container.
  • Australian Patent Application AU-B-15456/76 discloses a one-piece closure in which an annular lip extends from the top and engages an inner bore of a container opening so as to curl the free end of the lip in against the bore or inside surface of the opening.
  • this closure effective sealing requires that the inside bore of the opening be of accurate and consistent dimensions.
  • gas pressure will tend to distort the lip and cause a seal failure.
  • Australian Patent Application AU-B-14180/83 describes a closure with two internal sealing structures.
  • One of the structures is an annular shaped outer portion shaped to accept the outer peripheral edge of the free end of the container relying upon the pressure generated during the closing of the cap to seal against this outer edge.
  • an inner cylindrical lip to engage the inner bore of the container opening.
  • the plastics material is high density polyethylene, low density polyethylene, or polypropylene. Where the container is to be used for gaseous liquids, the plastics material must have a very low porosity to the gas.
  • the rib is shaped and sized so that, during the threaded engagement of the closure with the container, the free edge of the rib contacts an inner surface of the top, or the surface of a structure contiguous with the top, before the closure is fully engaged and such that the rib in the region proximal the free edge is pinched between the free end of the neck of the container and the top of the closure, or the structure contiguous with the top of the closure, when the closure is fully engaged with the container.
  • first substantially cylindrical and second frusto-conical portions of the lip join at an included angle of at least 90°. It is also preferred that the rib is of a thickness tapering from a maximum thickness proximal the top to a minimum thickness at its annular free edge.
  • first substantially cylindrical and second frusto-conical portions of the lip smoothly join with an internal radius of from 0.1mm to 0.5mm, most preferably 0.2mm. It is further preferred that the cross-sectional thickness of the rib proximate the join between the first and second portions is from 0.4mm to 0.8mm, most preferably approximately 0.6mm.
  • the first substantially cylindrical portion of the sealing rib joins the top spaced radially inwardly from the skirt so as to define a space of annular cross-section between the rib and skirt.
  • the container neck has a standard finish the rib is closely spaced from, or contiguous with, the skirt.
  • Fig. 1 shows a cap 1 which is in many aspects a conventional screw top cap for a bottle to be used in containing a carbonated beverage.
  • the cap 1 includes a continuous cylindrical sidewall 2 with a thread 3 formed on its interior surface.
  • the top end of the cap 1 is closed by a top 4 which joins the skirt 2 in a continuous circular perimeter.
  • the top 4 and skirt 2 being formed integrally from high density polyethylene by injection moulding.
  • the cap differs from known caps in that it includes an annular rib 6 which extends from the interior surface of the top 4 concentrically of the cap 1, being positioned close to the skirt 2.
  • the annular sealing rib 6 includes a first or root portion 7 which extends from the top 4 approximately parallel to the skirt 2 with a second portion 8 extending from the end of the first portion 7 tapering inwardly and away from the side wall 2.
  • the cap 1 can be seen in Fig. 2 screwed onto the screw top end 9 of a container not fully shown in the drawing.
  • the end 9 of the container is finished with an Alcoa step 10 at the outer periphery of its open end extremity.
  • the Alcoa step 10 allows a space between the end 9 of the container and the inner surface of the skirt 2 of the cap 1.
  • the size of this annular space is sufficient to allow the second portion 8 of the outer rib 6 to contact the end 9 of the container as the cap 1 is being screwed onto the container, and for the second portion 8 to fold up on itself and against the root portion 7 and structure integral with the top 4.
  • the second portion 8 of the sealing rib 6 is deformed by being bent towards the top 4.
  • the deformation continues and contact is made between the second portion 8 of the sealing rib 6 and an inner rib 5 which effectively extends the structure of the top 4.
  • the inner rib 5 in fact is not essential to the invention and can be dispensed with if the other components are suitably modified so that the end portion 8 contacts the top 4 during this deformation.
  • annular gap 12 is formed between the outer rib 6 and the skirt 2, proximate the top 4. This is one means of accommodating the Alcoa step 10 and allowing the necessary movement of the outer rib 6 during application of the cap 1 to a container end 9.
  • the dimensions of the outer rib 6, in conjunction with the design shape of the rib 6 and its material of construction, will clearly influence the effectiveness of the cap 1. Not only the sealing effectiveness but also the mouldability, removal torque, reusability and consistency are important.
  • the inner radius joining the first and second portions 7 and 8 of the outer rib 6 is 0.2mm, the outer radius 0.5mm and the cross-sectional thickness approximately 0.6mm (slightly tapered for mould removal).
  • Fig. 3 has a very much smaller inner rib 5 but is otherwise substantially the same as the embodiment of Fig. 1 and 2.
  • the cap is modified (not illustrated) for containers not finished with an Alcoa step.
  • the inner diameter at the skirt and the thread dimensions must provide a secure engagement with the container thread.
  • the inner dimension of the first portion 7 of the sealing rib 6 is preselected to be equal to, or slightly greater than, the external diameter of the container neck at the opening.

Claims (7)

  1. Verschluß (1) für einen Behälter (9) mit einem mit Außengewinde versehenen Hals, wobei der Verschluß (1) in einem Stück aus einem elastischen Kunststoffmaterial geformt ist und einen Oberteil (4) und einen von dem Oberteil (4) abhängenden Randteil (2) umfaßt, welcher Randteil (2) auf einer Innenfläche ein komplementäres Schraubgewinde (3) aufweist, eine ringförmige Dichtungsrippe (6), welche radial innerhalb des Randteils (2) angeordnet ist und von dem Oberteil (4) nach unten hervorsteht und benachbart dem Randteil (2) liegt oder an diesen anstößt, wobei die Rippe (6) einen ersten Abschnitt (7) aufweist sowie einen Zweiten kegelstumpfartigen Abschnitt (8), welcher sich von dem ersten Abschnitt (7) radial nach innen erstreckt, um in einem ringförmigen freien Rand zu enden, wobei der freie Rand des kegelstumpfartigen Abschnitts (8) einen Durchmesser aufweist, der kleiner ist als der Außendurchmesser des Halses des Behälters (9), an welchem der Verschluß (1) anzubringen ist so daß der Hals des Behälters (9) während des Schraubeingriffs des Verschlusses (1) mit dem Hals in ein Eingriff mit dem kegelstumpfartigen Abschnitt (8) der Rippe (6) ist,
    dadurch gekennzeichnet,
    daß der erste Abschnitt (7) im wesentlichen Zylindrisch ist und eine im wesentlichen zylindrische Innenfläche mit einem Innendurchmesser aufweist, welcher gleich oder nur geringfügig größer als ein Außendurchmesser des Halses des Behälters (9) ist, wobei der kegelstumpfartige Abschnitt (8) sich von dem vom Oberteil (4) entfernten Ende des ersten Abschnitts (7) erstreckt, wodurch während des Schraubeingriffs des Verschlusses (1) mit dem Hals des Behälters (9) der zweite kegelstumpfartige Abschnitt (8) gegen die Innenfläche des ersten Abschnitts (7) der Rippe (6) zurück und in Kontakt mit einem inneren Oberflächenabschnitt des Oberteils (4) oder einer an das Oberteil (4) angrenzenden Struktur (5) gefaltet wird, um daraufhin eine gasdichte Abdichtung zwischen dem Hals des Behälters (9) und dem Verschluß (1) von einer äußeren Oberseite des Behälters auf eine äußere zylindrische Oberfläche des Behälterhalses hin zu bilden.
  2. Verschluß (1) nach Anspruch 1, worin die Rippe (6) eine Form, Größe und ein Aufbaumaterial aufweist, welche derart ausgewählt sind, daß während der Anbringung des Verschlusses (1) an einem Behälter die Rippe (6) in Reibungseingriff zwischen der äußeren Oberfläche des Behälters und dem inneren Oberflächenabschnitt des Oberteils (4) oder der an das Oberteil (4) angrenzenden Struktur (5) ist, so daß, wenn einmal gegenseitiger Kontakt hergestellt ist, die Endbewegung des Verschlusses (1) einen Endteil des zweiten, kegelstumpfartigen Abschnitts (8) der Rippe (6) benachbart einer äußeren Oberfläche des Halses (9) des Behälters dicht gegen die äußere Oberfläche des Behälters zieht, um eine kontinuierliche Abdichtung von der äußeren Oberseite des Behälters auf die äußere zylindrische Oberfläche des Behälterhalses hin zu bilden.
  3. Verschluß (1) nach Anspruch 2, worin die Rippe (6) während der Anbringung des Verschlusses (1) an einem Behälter in Reibungseingriff mit einem Teil einer zweiten kontinuierlichen ringförmigen Rippe (5) ist, welche an das Oberteil (4) des Verschlusses (1) angrenzt.
  4. Verschluß (1) nach Anspruch 3, worin die zweite Rippe (5) sich radial nach innen und von dem Oberteil (4) weg erstreckt und im Querschnitt sich verjüngend ausgebildet ist.
  5. Verschluß (1) nach Anspruch 4, worin nach Anbringung des Verschlusses (1) an dem Behälter (9) die zweite Rippe (5) durch Biegen in Richtung des Oberteils (4) nach dem Kontakt mit der Dichtungsrippe (6) verformt ist.
  6. Verschluß (1) nach Anspruch 5, worin der erste Abschnitt (7) mit dem Oberteil (4) radial von dem Randteil (2) versetzt verbunden ist, um einen im allgemeinen ringförmigen Zwischenraum zwischen dem ersten Abschnitt (7) und dem Randteil (2) zu bilden.
  7. Verschluß (1) nach Anspruch 1, worin die Rippe (6) einen sich verjüngenden Querschnitt aufweist, um das Ausstoßen des Verschlusses (1) aus einer Spritzform zu ermöglichen.
EP89907042A 1988-06-17 1989-06-15 Deckel ohne innenbekleidung für kohlensäurehaltige getränkebehälter Expired - Lifetime EP0481981B2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AU8846/88 1988-06-17
AUPI884688 1988-06-17
AU884688 1988-06-17
PCT/AU1989/000256 WO1989012584A1 (en) 1988-06-17 1989-06-15 Linerless closure for carbonated beverage container
AU37737/89A AU627746B2 (en) 1988-06-17 1989-06-15 Linerless closure for carbonated beverage container

Publications (4)

Publication Number Publication Date
EP0481981A4 EP0481981A4 (de) 1991-03-06
EP0481981A1 EP0481981A1 (de) 1992-04-29
EP0481981B1 EP0481981B1 (de) 1994-08-31
EP0481981B2 true EP0481981B2 (de) 1999-11-17

Family

ID=25624087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89907042A Expired - Lifetime EP0481981B2 (de) 1988-06-17 1989-06-15 Deckel ohne innenbekleidung für kohlensäurehaltige getränkebehälter

Country Status (2)

Country Link
EP (1) EP0481981B2 (de)
WO (1) WO1989012584A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638972A (en) * 1988-06-17 1997-06-17 Druitt; Rodney Malcolm Linerless closure for carbonated beverage container
EP0460813A3 (en) * 1990-05-25 1992-03-11 Tredegar Molded Products Company Threaded closure with integral sealing means
ES2048060B1 (es) * 1991-10-01 1995-07-01 Druitt Titular Del 50 Rodney M Tapa sin revestimiento interior para recipiente de bebidas carbonicas.
EG21314A (en) * 1992-07-16 2000-10-31 Driutt Rodney Malcolm Tamper evident closure
FR2710325B1 (fr) 1993-09-22 1995-12-08 Jacques Perchepied Bouchon à visser.
SE501925C2 (sv) * 1993-09-24 1995-06-19 Kabi Pharmacia Ab Behållare för medicinska vätskor samt förfarande för dess försegling
NL9402151A (nl) * 1994-12-19 1996-08-01 Johannes Antonius Maria Van Cr Combinatie van een fles en een dop alsmede fles en dop bestemd voor deze combinatie.
WO2006097151A2 (en) 2005-03-14 2006-09-21 Creanova Universal Closures Ltd. Closure
EP1799573B1 (de) * 2004-09-01 2008-12-10 Creanova Universal Closures Ltd. Verschluss
AU2005331483B2 (en) 2004-09-01 2012-02-16 Creanova Universal Closures Ltd. Sealing means for a closure, closure and process
PL2663506T3 (pl) 2011-01-14 2016-03-31 Creanova Universal Closures Ltd Zamknięcie
US10532858B2 (en) 2017-09-06 2020-01-14 Creanova Universal Closures Ltd. Closure for container neck finishes

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200981A (en) † 1961-10-03 1965-08-17 Wicanders Korkfabriker Ab Bottle caps
AU417081B2 (en) † 1965-10-23 1971-09-13 Kouichihayashida Bottle-stopper
AU433268B2 (en) † 1967-12-22 1973-03-02 Reflex Corporation Of Canada Limited Safety cap and container
US3780897A (en) † 1970-02-18 1973-12-25 V Wassilieff Stoppers
AU501052B2 (en) † 1974-10-02 1979-06-07 Te. Chill Search Limited Two-to-four wire converter
US4349116A (en) † 1978-12-07 1982-09-14 Ethyl Products Company Thermoplastic screw-threaded closure cap
US4398645A (en) † 1981-06-29 1983-08-16 Thurston Toeppen Closure for pressurized containers
AU561051B2 (en) † 1983-10-29 1987-04-30 Metal Box Plc One-piece sealing closure
AU570997B2 (en) † 1983-08-26 1988-03-31 Metal Closures Ltd. Sealing closure with flexible fin

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203571A (en) * 1960-12-06 1965-08-31 Robert L Plunkett Self sealing cap construction
GB1499895A (en) * 1974-06-07 1978-02-01 Mack Wayne Plastics Co Container and cap combination
FR2391926A2 (fr) * 1976-02-03 1978-12-22 Grussen Jean Capsule de bouchage a vis a etancheite amelioree et moule de fabrication
US4069937A (en) * 1977-01-28 1978-01-24 Owens-Illinois, Inc. Linerless closure
US4450973A (en) * 1982-09-28 1984-05-29 Thurston Toeppen Closure for pressurized containers
EP0109631A3 (de) * 1982-11-17 1985-07-31 Walter Wiedmer Schraubverschluss aus elastischem Material für Behälter

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200981A (en) † 1961-10-03 1965-08-17 Wicanders Korkfabriker Ab Bottle caps
AU417081B2 (en) † 1965-10-23 1971-09-13 Kouichihayashida Bottle-stopper
AU433268B2 (en) † 1967-12-22 1973-03-02 Reflex Corporation Of Canada Limited Safety cap and container
US3780897A (en) † 1970-02-18 1973-12-25 V Wassilieff Stoppers
AU501052B2 (en) † 1974-10-02 1979-06-07 Te. Chill Search Limited Two-to-four wire converter
US4349116A (en) † 1978-12-07 1982-09-14 Ethyl Products Company Thermoplastic screw-threaded closure cap
US4398645A (en) † 1981-06-29 1983-08-16 Thurston Toeppen Closure for pressurized containers
AU570997B2 (en) † 1983-08-26 1988-03-31 Metal Closures Ltd. Sealing closure with flexible fin
AU561051B2 (en) † 1983-10-29 1987-04-30 Metal Box Plc One-piece sealing closure

Also Published As

Publication number Publication date
EP0481981A4 (de) 1991-03-06
EP0481981A1 (de) 1992-04-29
WO1989012584A1 (en) 1989-12-28
EP0481981B1 (de) 1994-08-31

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