EP0155021B2 - Verschlusskappe aus Polypropylen mit Abdichtung und Garantieband - Google Patents

Verschlusskappe aus Polypropylen mit Abdichtung und Garantieband Download PDF

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Publication number
EP0155021B2
EP0155021B2 EP85200149A EP85200149A EP0155021B2 EP 0155021 B2 EP0155021 B2 EP 0155021B2 EP 85200149 A EP85200149 A EP 85200149A EP 85200149 A EP85200149 A EP 85200149A EP 0155021 B2 EP0155021 B2 EP 0155021B2
Authority
EP
European Patent Office
Prior art keywords
closure cap
gasket
plastisol
container
cap
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
EP85200149A
Other languages
English (en)
French (fr)
Other versions
EP0155021A1 (de
EP0155021B1 (de
Inventor
Wiebren Durk Halbe Kornelis
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.)
Kornelis' Kunsthars Producten Industrie BV
Kornelis Kunsthars Producten Industrie BV
Original Assignee
Kornelis' Kunsthars Producten Industrie BV
Kornelis Kunsthars Producten Industrie BV
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=19843469&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0155021(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kornelis' Kunsthars Producten Industrie BV, Kornelis Kunsthars Producten Industrie BV filed Critical Kornelis' Kunsthars Producten Industrie BV
Priority to AT85200149T priority Critical patent/ATE34148T1/de
Publication of EP0155021A1 publication Critical patent/EP0155021A1/de
Application granted granted Critical
Publication of EP0155021B1 publication Critical patent/EP0155021B1/de
Publication of EP0155021B2 publication Critical patent/EP0155021B2/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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/06—Sealings formed by liquid or plastic material
    • 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
    • B65D41/0442—Collars or rings
    • 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
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3461—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt the tamper element being retracted by heat or by heat and pressure
    • B65D41/3466—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt the tamper element being retracted by heat or by heat and pressure and being integrally connected to the closure by means of bridges
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/02—Collars or rings

Definitions

  • the invention relates to a method for making a container closure cap made of polypropylene and comprising an end wall and a circumferential side wall, the cap comprising a pilfer-proof device, the cap being provided with a gasket made from a plastisol material arranged to seal on the edge of the container neck, the cap being obtained starting from a combination of the closure cap with the pilfer-proof device and adding an amount of the plastisol material, the gasket being formed by heating the closure cap after addition of the plastisol to a chosen temperature and by subsequently exposing the resulting plastisol shaped into the gasket configuration to electro-magnetic energy until the plastisol has completely fluxed, the pilfer-proof device being designed as a sealing ring with which the container can be sealably closed in conjunction with a locking collar disposed around the neck of the container, said sealing ring being integrally connected with the side wall of the closure cap via frangible bridges capable of being broken on first opening of the container, said frangible bridges
  • Such a method and the closure cap made with such method is known from WO-A-84/00346.
  • the method according to the invention is characterized in that said space is also bounded by an inner undercut, the end wall has a wall thickness decreased by 20-50% at the gasket, the heating of the cap is to a temperature of 50-110°C, and the electro-magnetic energy has a frequency of 10-200 MHz .
  • the method according to the invention has several advantages over the prior art method.
  • the heating-up of the plastisol can take place in a shorter time interval. A more efficient use of the energy is made.
  • simple and cheap apparatus for generating the electro-magnetic energy can be used.
  • GB-B-1 592 222 mentions the fluxing of a plastisol in a closure by dielectrically heating the plastisol with exposure to a source of radio frequency electrical energy having a frequency in the range of 1-200 MHz and then allowing the fluxed plastisol to cool and form the gasket. From this prior art reference, however, this single feature of the invention is known only in isolation.
  • the fluxing operation is carried out by heating the closure cap after addition of the plastisol to 100°C within 15-30 s and completely fluxing the plastisol shaped into the gasket configuration by 3-15 s exposure to electro-magnetic energy having a frequency to 27,10-27,15 MHz. This frequency is permitted for industrial uses in the whole world.
  • Fig. 1 the wall of the neck of a container made of glass is indicated by 1, and 2 shows the closure cap of polypropylene.
  • On the inside the closure cap is provided with an annular space formed by the two circumferential undercuts 3 and 4, which annular space comprises the gasket 5.
  • the inner undercut 3 is crescent-shaped and is resilient due to the outwardly decreasing thickness of the material.
  • the crescent-shaped construction permits the inner undercut to rest on a part of the edge of the neck opening of the container. As a result thereof a part of the higher unscrewing torsion of the gasket is absorbed and reduced by the undercut.
  • the crescent-shaped undercut 3 ensures that in case of pasteurization of the contents of the container the expanded air generated in that process flows out between the undercut 3, which is thereby resiliently deflicted somewhat, and the edge of the neck whereby the deflected undercut simultaneously causes an additional clamping force to be exerted on the gasket and the gasket is retained in position.
  • Figs. 2-5 show the closure cap of polypropylene at 10, comprising side wall 11 and sealing ring 13 which is connected with side wall 11 via a frangible bridge 12.
  • the neck portion of the container is shown at 14, which neck portion 14 is provided with locking collar 17.
  • a closure cap according to the invention may be sealed after closed a container with it.
  • Fig. 2 in the state before sealing.
  • the side wall 11 with frangible bridges 12 and sealing ring 13 is clear of the container.
  • Fig. 4 shows the situation in which the frangible bridge 12 with the sealing 13, which where previously exposed to the action of hot air having a temperature of 400°C for 2 sec., has been grasped by the clamp 15 moving towards the container.
  • the frangible bridge 12 is then overstretched over and under the locking collar 17 and flattened, the sealing ring 13 also being flattened simultaneously between the clamp 15 and the neck portion 14 of the container.
  • Fig. 5 shows, in comparison with Fig. 3, the deformation experienced by the frangible bridge 12 and the sealing ring 13, which has resulted in that the sealing ring has a diameter smaller than the largest diameter of the locking collar 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Glass Compositions (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Claims (3)

  1. Verfahren zum Herstellen einer Verschlußkappe (2) aus Polypropylen für einen Behälter (1), der eine Endwand und eine Umfangs-Seitenwand aufweist, wobei die Kappe mit einer eingriffsverhindernden Einrichtung versehen ist (12, 13), und die Kappe (2) eine Dichtung (5) aus Plastisolmaterial aufweist, die den Rand des Behälterhalses (14) abdichtet, während man die Kappe (2) erhält beginnend von einer Kombination der Verschlußkappe (2) mit der eingriffsverhindernden Einrichtung (12, 13) und durch Einbringen einer Plastisol-Materialmenge, so daß die Dichtung (5) gebildet wird durch Erwärmen der Verschlußkappe (2) nach Zusetzen des Plastisols auf eine ausgewählte Temperatur und indem man das zu der Dichtungsanordnung (5) geformte Plastisol anschließend einer elektro-magnetischen Energie aussetzt, bis das Plastisol vollständig geschmolzen ist,
       wobei die eingriffsverhindernde Einrichtung (12, 13) als Dichtungsring (13) konstruiert ist, mit dem der Behälter (1) in Verbindung mit einem Verriegelungsrand (17), der sich um den Hals (14) des Behälters (1) erstreckt, dicht verschlossen werden kann, so daß der Dichtungsring (13) integral mit der Seitenwand der Verschlußkappe (2) über zerbrechliche Brücken (12) verbunden ist, die beim ersten Öffnen des Behälters (1) aufbrechbar sind, wobei sich die zerbrechlichen Brücken (12) in axialer Richtung zur Verschlußkappe (2) erstrecken,
       wobei die Endwand innen mit einem Ringraum versehen ist, der von einer äußeren Hinterschneidung (4) begrenzt ist,
       wobei das Plastisolmaterial dem Ringraum zugeführt werden kann,
        dadurch gekennzeichnet,
       daß der Raum ebenfalls durch eine innere Hinterschneidung (3) begrenzt ist,
       daß die Endwand eine Wandstärke hat, die an der Dichtung um 20 -50 % reduziert ist,
       daß die Kappe auf 50 - 110° C erwärmt wird
    und
       daß die elektro-magnetische Energie eine Frequenz von 10 - 200 MHz hat.
  2. Verfahren nach Anspruch 1,
        dadurch gekennzeichnet,
       daß es in einer Weise durchgeführt wird, daß die innere Hinterschneidung (3) im Querschnitt verjüngt und nachgiebig ist und einen größten Durchmesser besitzt, um das Abdichten der Dichtung (5) auf dem Rand des Behälterhalses (1) zum Teil in Kombination mit der Hinterschneidung (3) zu bewirken.
  3. Verfahren nach Anspruch 1 oder 2,
        dadurch gekennzeichnet,
       daß es in einer Weise durchgeführt wird, daß der Innendurchmesser der Verschlußkappe (10) bis 100 mm beträgt.
EP85200149A 1984-02-09 1985-02-07 Verschlusskappe aus Polypropylen mit Abdichtung und Garantieband Expired - Lifetime EP0155021B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200149T ATE34148T1 (de) 1984-02-09 1985-02-07 Verschlusskappe aus polypropylen mit abdichtung und garantieband.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8400428A NL8400428A (nl) 1984-02-09 1984-02-09 Werkwijze ter vervaardiging van een van een afdichtpakking voorziene sluitdop uit een polypropeenmateriaal voor een houder; van een afdichtpakking voorziene sluitdop uit een alkeenpolymeer, alsmede werkwijze voor het sluiten en verzegelen van een houder met een sluitdop vervaardigd uit polypropeenmateriaal.
NL8400428 1984-02-09

Publications (3)

Publication Number Publication Date
EP0155021A1 EP0155021A1 (de) 1985-09-18
EP0155021B1 EP0155021B1 (de) 1988-05-11
EP0155021B2 true EP0155021B2 (de) 1994-03-02

Family

ID=19843469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200149A Expired - Lifetime EP0155021B2 (de) 1984-02-09 1985-02-07 Verschlusskappe aus Polypropylen mit Abdichtung und Garantieband

Country Status (11)

Country Link
EP (1) EP0155021B2 (de)
JP (1) JP2545207B2 (de)
AT (1) ATE34148T1 (de)
CA (1) CA1292443C (de)
DE (1) DE3562601D1 (de)
DK (1) DK61285A (de)
ES (1) ES8606173A1 (de)
GR (1) GR850303B (de)
IN (1) IN162719B (de)
NL (1) NL8400428A (de)
ZA (1) ZA85865B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE939052C (de) * 1948-12-14 1956-02-16 Anton Springer Bohrloch-Impfgeraet fuer Holzschutztraenkung
US4675139A (en) * 1985-10-21 1987-06-23 Continental Can Company, Inc. Method of forming plastisol gaskets in container closures fabricated from synthetic plastic resins
GB2186558A (en) * 1986-02-17 1987-08-19 Grace W R & Co Container closure
IT1232058B (it) * 1989-03-29 1992-01-23 Alplast Spa Capsula a vite di materiale termoplastico
GB2252267A (en) * 1991-01-31 1992-08-05 Grace W R & Co Curing of plastisol liner material in thermoplastic closure
US6142325A (en) * 1998-10-19 2000-11-07 Playtex Products, Inc. Container assembly and bottom cap therefor
FR2822810B1 (fr) * 2001-03-28 2003-08-22 Rical Sa Dispositif de bouchage pour une bonbonne, munie de moyens de retenue et d'accorchage d'un joint coule ou moule, et procede de realisation
JP4994172B2 (ja) * 2007-09-26 2012-08-08 日本クラウンコルク株式会社 容器用のキャップ
US9738423B2 (en) 2010-08-30 2017-08-22 Tetra Laval Holdings & Finance S.A. Sealing cap
CN108910251A (zh) * 2018-08-02 2018-11-30 宁国市双阳精密制造有限公司 一种耐磨材料生产销售用物流箱
GB2579839B (en) 2018-12-17 2021-09-15 Crown Packaging Tech Low migration container

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR66059B (de) * 1977-01-28 1981-01-14 Continental Group
GR72763B (de) * 1980-02-14 1983-12-02 Obrist Ag Albert
ZA831232B (en) * 1982-03-10 1983-11-30 Grace W R & Co Screw cap
GB2116529B (en) * 1982-03-10 1985-07-17 Grace W R & Co Screw closure
JPS5915059A (ja) * 1982-07-06 1984-01-26 日本クラウンコルク株式会社 合成樹脂製容器蓋
JPS59501203A (ja) * 1982-07-09 1984-07-12 メタル・クロ−ジュア−ズ・グル−プ・ピ−エルシ− ねじ付容器用蓋の改良

Also Published As

Publication number Publication date
NL8400428A (nl) 1985-09-02
JPS60204473A (ja) 1985-10-16
IN162719B (de) 1988-07-02
AU580751B2 (en) 1989-02-02
ES8606173A1 (es) 1986-04-16
EP0155021A1 (de) 1985-09-18
DK61285D0 (da) 1985-02-08
ES540171A0 (es) 1986-04-16
ZA85865B (en) 1985-10-30
ATE34148T1 (de) 1988-05-15
GR850303B (de) 1985-04-03
JP2545207B2 (ja) 1996-10-16
DK61285A (da) 1985-08-10
EP0155021B1 (de) 1988-05-11
AU3856485A (en) 1985-08-15
CA1292443C (en) 1991-11-26
DE3562601D1 (en) 1988-06-16

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