EP0343102B1 - Capuchon en matière plastique - Google Patents

Capuchon en matière plastique Download PDF

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Publication number
EP0343102B1
EP0343102B1 EP89810311A EP89810311A EP0343102B1 EP 0343102 B1 EP0343102 B1 EP 0343102B1 EP 89810311 A EP89810311 A EP 89810311A EP 89810311 A EP89810311 A EP 89810311A EP 0343102 B1 EP0343102 B1 EP 0343102B1
Authority
EP
European Patent Office
Prior art keywords
closure cap
cap
guarantee
cap according
guarantee strip
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
EP89810311A
Other languages
German (de)
English (en)
Other versions
EP0343102A3 (en
EP0343102A2 (fr
Inventor
Hans-Werner Breuer
Werner R.F. Stibal
Franz Thomas Bartl
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.)
Crown Cork AG
Original Assignee
Crown Cork AG
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=4219805&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0343102(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Crown Cork AG filed Critical Crown Cork AG
Priority to AT89810311T priority Critical patent/ATE77327T1/de
Publication of EP0343102A2 publication Critical patent/EP0343102A2/fr
Publication of EP0343102A3 publication Critical patent/EP0343102A3/de
Application granted granted Critical
Publication of EP0343102B1 publication Critical patent/EP0343102B1/fr
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
    • B65D41/32—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
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges

Definitions

  • the invention relates to a closure cap made of plastic material according to the preamble of claim 1.
  • closure caps are known and customary in a large number of embodiments for closing containers, in particular for closing beverage bottles.
  • the guarantee tape of such caps is designed so that when the cap is first placed on a container, e.g. a bottle with projections on the bottle engages in such a form-fitting manner that the tamper-evident band is held by the projections when the closure cap is unscrewed and is thereby separated from the body of the closure cap.
  • the separation or tearing off of the guarantee tape thus indicates whether such a container has already been opened and thus serves to protect consumers.
  • caps can be positively connected to the container neck in various ways.
  • caps are known which are snapped over a bead on the container neck.
  • screw caps which are mainly used for beverage bottles.
  • From DE-A-28 19 947 or EP-A-00 12 082 two embodiments of such screw closures are known.
  • projections are provided on the inside of the guarantee band, which are snapped over a bead on the beverage bottle when the closure cap is screwed on.
  • these projections are formed by inwardly directed cutouts from the wall of the guarantee band.
  • EP-A-00 12 082 radially inward projections which are approximately parallelogram-shaped in cross section are formed on the inside of the guarantee band.
  • the guarantee band must be provided with such a large inner diameter that the radially inwardly projecting projections can be bent outwards relatively easily when put on by the projection at the container mouth in order to snap under the lower edge of the said projection.
  • This requires relatively flexible projections and a large inner diameter of the guarantee band.
  • the invention has for its object to avoid the disadvantages of the known, in particular to create a cap that can be placed elastically and without risk of destroying the guarantee on the container mouth and on the other hand is firmly and positively connected to the container mouth after placement .
  • This is to be achieved with a simple geometric shape and with the least possible material expenditure.
  • this is achieved primarily with a closure cap with the characterizing part of patent claim 1.
  • the wall of the guarantee band itself is not cylindrical in cross section, but is provided with inwardly directed indentations.
  • indentations allow the guarantee band to be widened when the closure cap is put on for the first time, since the indentations only have to be pressed radially outward in order to significantly increase the free inside diameter of the entire guarantee band.
  • the guarantee band according to the invention no projections are required on the inner wall of the guarantee band, since the upper boundary surfaces of the guarantee band form the latching edges even in the region of the indentations, which engage under corresponding projections on the container neck.
  • the enlargement of the free inside diameter of the guarantee band when the closure cap is put on and slipped over the projections on The neck of the container can be carried out without causing damage to the connecting elements.
  • This can be supported by the fact that the guarantee band in the area of the lower edges of the indentations is inclined towards the central axis of the closure cap. An angle of approximately 45 ° has proven to be particularly advantageous.
  • Guarantee tapes are particularly reliable and easy to manufacture and have an approximately circular and wavy cross section.
  • a particularly good hold of the guarantee band can be achieved via the protrusions of the container neck if the guarantee band is divided into an upper and a lower section, the inner wall of the upper section being approximately cylindrical and the lower section having the radially inward direction directed indentations is provided and forms a unit between indentations with the upper section.
  • the lower section can be widened radially outward in the manner described above and snapped over corresponding projections on the container neck.
  • the upper section gives the guarantee band additional stability and surrounds the corresponding projections on the container neck without engaging them in a positive or non-positive manner.
  • the indentations can also be designed such that they have two side walls enclosing an angle.
  • the indentations can also consist of two inwardly directed side walls which are connected to one another by a third inner side wall.
  • the guarantee band can be widened radially outwards even by stretching the indentations, which guarantees an advantageous placement behavior even when the closure is unscrewed quickly on the container.
  • the corresponding configuration of the indentations allows, depending on the design of the projection Optimize the form-fitting adhesion and thus the unscrewing behavior.
  • the latching edge can be slightly inclined without the positive connection of the screw cap to the container being impaired thereby.
  • Such a beveling of the latching edge is of advantage particularly in the production of the sealing caps by injection molding with tools which eject the sealing cap in the axial direction. Particularly good results can be achieved if the locking edge is inclined at an angle of approximately 70 ° to the longitudinal axis of the closure cap.
  • a closure cap 1 has a disc-shaped cap base 2, which is in a cylindrical Cap jacket 3 passes.
  • the cap jacket 3 is connected at its lower edge by means of tear-off connecting webs 4 to a guarantee band 5.
  • the cap is made in one piece in a known manner from plastic by injection molding.
  • the guarantee band 5 is circularly corrugated according to Figure 2. This means that the guarantee band has an approximately circular cross-section in sections and runs in between with inwardly directed indentations 6.
  • the lower edge of the guarantee tape is provided with a bevel 7 running towards the central axis of the sealing cap.
  • the guarantee band 5 can be widened, i.e. increase in diameter as soon as an outward force is exerted on the indentations 6. This happens when the guarantee band is placed on a container mouth when the guarantee band with the bevel 7 runs onto corresponding projections on the container mouth.
  • the outer configuration of a bottle is indicated schematically with such a projection 8, which protrudes outwardly from the container neck 9 in a ring shape.
  • the upper boundary surfaces of the indentations 6 serve as locking edges 10 which engage under the projections 8 of the container neck.
  • the guarantee band 5 is positively connected to the projections 8 on the container neck 9 such that when unscrewing the guarantee band 5 holds firmly on the container neck 9, so that the connecting webs 4 tear and indicate the first opening of the container.
  • the guarantee band 5 is expanded, which is supported above all by the bevels 7.
  • the locking edges 10, on the other hand are inclined at a relatively flat angle, so that widening of the guarantee band 5 is avoided when the closure cap is unscrewed.
  • FIG. 3 also shows a modified exemplary embodiment in which the guarantee band 5 is divided into an upper section A and a lower section B.
  • the upper section A of the guarantee band 5 runs cylindrical, as is known from conventional guarantee bands.
  • the lower section B is corrugated analogously to the exemplary embodiment according to FIG. 2 and is provided with indentations 6. Between the indentations 6, the lower section B of the guarantee band 5 also runs cylindrically; in this area it is connected to the upper section A.
  • the upper boundary surfaces of the indentations 6 form locking edges 10 which engage under the projections 8 on the container neck 9.
  • FIG. 3 Analogously to the exemplary embodiment according to FIG.
  • the guarantee band 5 can be widened radially outward in the region of the indentations when the closure cap 1 is first placed on the container neck 9.
  • the angle ⁇ of the latching edge 10 is provided with a relatively weak inclination of approximately 70 ° with respect to the central axis of the closure cap.
  • the locking edge 10 thus spreads firmly behind the projection 8.
  • the bevel 7 is formed on the lower boundary surface of the indentations 6 with a relatively steep angle ⁇ of 45 °. This bevel 7 has the effect that the indentations 6 are curved upwards and inclined inwards, which facilitates the widening of the guarantee band 5 when it is screwed onto the container neck 9.
  • the outer wall of the upper section A of the guarantee tape 5 is tapered to the cap jacket 3, so that they in Cross section according to Figure 5 with the inner wall of the cap shell 3 form an acute-angled triangle.
  • the core of the tool which forms the inside of the cap casing 3 and the guarantee band 5
  • the core projections snapping over the bevelled locking edges 10 and the indentations 6 expanding outwards.
  • the outer wall of the guarantee band 5 in the area of section A can then also be removed from the mold due to the conical shape by ejection without a radially opening outer molded part.
  • Such a demolding principle is described, for example, in US Pat. No. 4,526,282.
  • FIG. 6 shows an embodiment in which the guarantee band 5 is provided with indentations 6, each of which has two side walls 6a, 6b which run at an angle to one another.
  • the indentations 6 comprise side walls 6a, 6b of approximately the same length, which enclose an obtuse angle.
  • the guarantee band 5 can be easily expanded radially outward in the manner described in connection with FIGS. 1 and 3.
  • Figure 8 shows an embodiment in which the indentations 6 have two side walls 6a, 6b and a third inner side wall 6c.
  • the side wall 6c is circular in cross section, like the guarantee band 5 in the outer region.
  • This embodiment is characterized by particularly good latching behavior on the container neck. Nevertheless, the inner diameter of the guarantee band can be widened by radially outward force when the closure cap is screwed on for the first time, the side walls 6a, 6b being bent accordingly.
  • the bevels 7 of the indentations 6, the latching edge 10 and the outer wall in the region of section A are shown in a straight line in cross section.
  • slightly beveled or convex (i.e. curved) cross-sectional shapes are also to be understood as "bevel”.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Diaphragms And Bellows (AREA)
  • Tubes (AREA)

Claims (11)

1. Couvercle de fermeture en matière plastique destiné à être relié par complémentarité de forme à une ouverture de récipient (9), afin de fermer celle-ci, étant précisé que le couvercle (1) possède un fond (2) et une enveloppe (3) sensiblement cylindrique sur le bord inférieur de laquelle est fixée, à l'aide de moyens de liaison (4), apte à se rompre, une bande de garantie (5) qui est destinée à venir en contact par en dessous, quand le couvercle est fixé sur le récipient, avec une ou plusieurs parties saillantes prévues au niveau de l'ouverture de récipient (9), et qui possède à cet effet un certain nombre d'arêtes d'encliquetage (10), dirigées radialement vers l'intérieur, qui réduisent le diamètre intérieur libre dans la zone de la bande de garantie (5) et sont disposées, espacées les unes des autres, sur la périphérie de la bande de garantie (5), caractérisé en ce que la paroi de la bande de garantie, au moins dans une section (B) commençant au niveau de son extrémité libre, présente, à la différence de la forme de section transversale cylindrique du couvercle de fermeture (1), la forme de creux (6) dirigés radialement vers l'intérieur, est réalisée sous la forme d'une paroi simple et est orientée parallèlement à l'axe médian de l'enveloppe de couvercle (3), les surfaces périphériques supérieures des creux définissant les arêtes d'encliquetage (10).
2. Couvercle de fermeture selon la revendication 1, caractérisé en ce que la bande de garantie (5) est divisée en une section supérieure et une section inférieure (respectivement A et B), la paroi intérieure de la section supérieure (A) ayant une configuration sensiblement cylindrique tandis que la section inférieure (B) est pourvue, à partir de la forme de base sensiblement cylindrique, des creux (6) dirigés radialement vers l'intérieur et définit à chaque fois, entre deux creux, une unité avec la section supérieure (A).
3. Couvercle de fermeture selon la revendication 1 ou 2, caractérisé en ce que la bande de garantie (5) présente une section transversale ondulée sensiblement circulaire.
4. Couvercle de fermeture selon l'une des revendications 1 ou 2, caractérisé en ce que les creux (6) présentent chacun deux parois latérales (6a, 6b) définissant un angle.
5. Couvercle de fermeture selon l'une des revendications 1 ou 2, caractérisé en ce que les creux (6) présentent chacun deux parois latérales (6a, 6b) dirigées radialement vers l'intérieur, qui sont reliées entre elles par une troisième paroi latérale centrale (6c).
6. Couvercle de fermeture selon l'une des revendications précédentes, caractérisé en ce que le bord inférieur des creux (6) est pourvu d'une partie biseautée (7) inclinée vers l'axe médian du couvercle de fermeture (1).
7. Couvercle de fermeture selon la revendication 6, caractérisé en ce que les parties biseautées (7) des creux sont inclinées suivant un angle d'environ 45° par rapport à l'axe longitudinal du couvercle de fermeture.
8. Couvercle de fermeture selon l'une des revendications précédentes, caractérisé en ce que l'arête d'encliquetage (10) est inclinée en direction de l'ouverture du couvercle.
9. Couvercle de fermeture selon la revendication 8, caractérisé en ce que l'arête d'encliquetage (10) est inclinée suivant un angle d'environ 70° en direction de l'axe longitudinal du couvercle de fermeture (1).
10. Couvercle de fermeture selon l'une des revendications précédentes, caractérisé en ce que la surface périphérique supérieure de la bande de garantie (5) associée à l'enveloppe de couvercle (3) est biseautée vers l'extérieur dans les zones proches des creux (6).
11. Couvercle de fermeture selon les revendications 2 et 10, caractérisé en ce que la face extérieure de la section supérieure (A) de la bande de garantie (5) est effilée suivant une forme sensiblement conique en direction de l'enveloppe de couvercle (3), de manière à définir en section transversale un triangle à angle aigu avec la paroi intérieure de la bande de garantie.
EP89810311A 1988-05-16 1989-04-26 Capuchon en matière plastique Expired - Lifetime EP0343102B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89810311T ATE77327T1 (de) 1988-05-16 1989-04-26 Verschlusskappe aus kunststoffmaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH183988 1988-05-16
CH1839/88 1988-05-16

Publications (3)

Publication Number Publication Date
EP0343102A2 EP0343102A2 (fr) 1989-11-23
EP0343102A3 EP0343102A3 (en) 1990-01-24
EP0343102B1 true EP0343102B1 (fr) 1992-06-17

Family

ID=4219805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810311A Expired - Lifetime EP0343102B1 (fr) 1988-05-16 1989-04-26 Capuchon en matière plastique

Country Status (6)

Country Link
EP (1) EP0343102B1 (fr)
JP (1) JPH0232955A (fr)
AT (1) ATE77327T1 (fr)
AU (1) AU622176B2 (fr)
DE (1) DE58901671D1 (fr)
ZA (1) ZA893604B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396205A1 (fr) * 1989-05-05 1990-11-07 Homer S.A. Fermeture de sécurité
GB2269372A (en) * 1992-08-06 1994-02-09 Lawson Mardon Cap with tamper-evident band
JP3256344B2 (ja) * 1993-07-21 2002-02-12 日本山村硝子株式会社 ピルファープルーフキャップ
IT1279973B1 (it) * 1995-07-05 1997-12-23 Sacmi Capsula a vite con anello di garanzia
JP2002211605A (ja) * 2001-01-19 2002-07-31 Shibazaki Seisakusho Ltd 合成樹脂製キャップ
JP2008030823A (ja) * 2006-07-31 2008-02-14 Tenryu Kagaku Kogyo Kk 合成樹脂製のピルファープルーフキャップ
GB201409834D0 (en) 2014-06-03 2014-07-16 Obrist Closures Switzerland A closure for a container,a tamper indicating band, a combination and a method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134264B1 (fr) * 1971-04-29 1974-03-08 Scal Gp Condit Aluminium
FR2442778A1 (fr) * 1978-12-01 1980-06-27 Alca Sa Bouchon inviolable, a vis ou encliquetable, en une seule piece moulee en matiere thermoplastique

Also Published As

Publication number Publication date
AU622176B2 (en) 1992-04-02
JPH0232955A (ja) 1990-02-02
EP0343102A3 (en) 1990-01-24
ZA893604B (en) 1990-01-31
EP0343102A2 (fr) 1989-11-23
DE58901671D1 (de) 1992-07-23
AU3469289A (en) 1989-11-16
ATE77327T1 (de) 1992-07-15

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