EP1626008B1 - Fermeture pour conserves - Google Patents

Fermeture pour conserves Download PDF

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Publication number
EP1626008B1
EP1626008B1 EP04725951A EP04725951A EP1626008B1 EP 1626008 B1 EP1626008 B1 EP 1626008B1 EP 04725951 A EP04725951 A EP 04725951A EP 04725951 A EP04725951 A EP 04725951A EP 1626008 B1 EP1626008 B1 EP 1626008B1
Authority
EP
European Patent Office
Prior art keywords
closure
flange
lip
film
cans
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.)
Revoked
Application number
EP04725951A
Other languages
German (de)
English (en)
Spanish (es)
Other versions
EP1626008A1 (fr
Inventor
Joaquin Aramendia Zuazu
José GOMEZ CALVO
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.)
Industrias Alimentarias De Navarra SA
Original Assignee
Industrias Alimentarias De Navarra SA
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33155451&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1626008(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Industrias Alimentarias De Navarra SA filed Critical Industrias Alimentarias De Navarra SA
Publication of EP1626008A1 publication Critical patent/EP1626008A1/fr
Application granted granted Critical
Publication of EP1626008B1 publication Critical patent/EP1626008B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container

Definitions

  • the present invention relates to a closure for cans, particularly for food cans, specifically of the type in which the lid of the can is embodied as a frame that can be attached to the can body or form part of it, determining a wide opening that is closed by a detachable film.
  • the object of the invention is to achieve a maximum simplification of the means used to attach the film to the frame and a perfect protection of these against the effects over time on the content of the can and on its surrounding environment, all of this with a complete absence of risk to the user when handling the can to open it.
  • conventional food cans are constructed by a body made from a metal plate suitable treated both externally and internally, said body adopting a prismatic, cylindrical or other shape, which in any case and after it is filled receives on its opening a closure lid that is also made of metal and has similar characteristics, mechanically flanged on said opening to determine, in addition to a tight seal, a peripheral flange used for its subsequent opening or as a support for a conventional can opener.
  • said patent foresees the presence of a double sealing area of the closure area of the container, so that both faces of the plate forming the frame or the ring must have a plastic coating for heat sealing, which increases the cost of the product greatly and worsens the mechanical properties regarding a simple opening of the container.
  • the two areas where heat sealing must be applied have a different thickness, specifically double in one than the other, requiring to adapt the process to the area of greater thickness therefore using a higher temperature and increasing the duration of the process, endangering the microbial safety of the product.
  • the effect of the heat sealing will in principle flatten the curl and in the long term can produce a rebound effect, both of these factors affecting the conditions of the two seals and therefore the sealing level of the container. It must also be mentioned that double heat sealing does not only make it more difficult to open the container but may also lead to breaking of the lid or spilling the preserving liquid when the can is opened.
  • the solutions proposed hitherto do not allow to use different materials in the body and in the lid or film, so that if the two materials are different when the inner cut-out edge comes in contact with the detachable film a galvanic corrosion will eventually take place that will cause a premature destruction of the closure lid of the container.
  • NL 1013957 is described a closure for cans, but although discloses a flange being at a lower height than the rest of the lip, it is not described any means for simplifying the heat soldening process and the subsequent operation for detaching the film acting as a lid.
  • the can closure proposed by the invention solves the aforementioned drawbacks in a fully satisfactory manner as regards the various issues discussed.
  • the invention relies on the fact that said lip has a marginal area, internal or external, flanged or folded by mechanical means to determine a substantially cylindrical curl or flange, so that the marginal area of said flange near its free end is mechanically attached to the initial area of the flange, producing a mechanical closure by contact of the two surfaces and thereby protecting the free and initially cutting edge of the body.
  • the configuration of the curl proposed in the invention is such that the curl or flange is at a lower height than the rest of the lip or on the outside of the can, allowing the film to be attached by heat soldering to the tab in its flat greater sector along a peripheral attachment line with a single attachment, which facilitates the detachment of the film during the opening process without the need for an additional heat sealing line inside said curl or flange.
  • the attachment of the film that constitutes the lid is effected by heat soldering on the ring or peripheral lip of the body in the flat, greater section of said lip without the inner edge being affected by said union.
  • the closure taught is applicable to food cans obtained from a metal plate that has been suitably treated both internally and externally to withstand external environmental effects and those derived from its own content, a can which in the example of embodiment selected adopts a prismatic configuration, as mentioned above, but which could also be cylindrical, with an elliptical outline or with any other configuration.
  • Said metal plate configures a body (1) that is open on the top and ends at a peripheral frame (2) which is attached to the opening of said body (1) by a conventional flanging method, as shown in figure 2 , in which frame is defined an internal peripheral lip (3), preferably included in an imaginary horizontal plane, to which is attached by heat soldering, adhesive or any other suitable means a film (4) that constitutes the lid as such and which can be obtained from a conventional complex from a metal sheet internally coated with a plastic film.
  • the lid may lack said frame (2) as a physically independent part of the body (1), so that the lip (3') will be obtained from the body (1) of the can by curling its opening, as in the previous case attaching the aforementioned film (4) to this lip (3').
  • the film (4) can also be provided with a tab (5) to be pulled by hand which constitutes a grip used to open the can.
  • said lip (3-3') incorporate in its marginal area an inner flange or fold (7), substantially cylindrical, as shown in any of figures 2, 3 , 4 and 5 .
  • This said flange is obtained by mechanical means and will be displaced towards the interior of the container as shown in figures 2 and 3 or towards its exterior, as shown in figures 4 and 5 , so that the marginal area (9) of said flange near its free end (6) is attached by a mechanical union to the initial area of the flange.
  • This embodiment prevents the contact between the unprotected metal of the edge of the body or the peripheral frame with the closure film, thereby preventing the galvanic corrosion of the closure film and the premature destruction of the container and its contents.
  • said film is attached exclusively to the flat area (8) of the lip (3-3'), as the flange is at a lower plane than the lip, which simplifies greatly the heat soldering process and the subsequent operation for detaching the film (4).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)

Abstract

A partir d'un corps (1) formé d'une tôle métallique d'une configuration quelconque, doté, à son embouchure, d'une languette périphérique (3, 3') sur laquelle est fixée par thermosoudage une feuille servant de couvercle sur la languette périphérique (3, 3'), on forme un rebord (7), plutôt cylindrique, dans lequel la zone marginale (9) de ladite languette (3-3') à proximité de son bord tranchant (6) est fixée au moyen d'un assemblage mécanique à la zone initiale du rebord, le bord tranchant (6) étant protégé des effets du produit contenu dans la conserve.

Claims (6)

  1. Fermeture pour des boîtes de conserves en particulier des boîtes de conserves alimentaires comprenant un corps (1) formé à partir d'une plaque métallique se terminant par une ouverture munie d'une lèvre périphérique interne (3, 3') ayant une zone plate (8) à laquelle est fixé un film (4) par thermosoudage, le film constituant un couvercle,
    - la lèvre (3, 3') ayant une bride (7) essentiellement cylindrique,
    - la bride (7) se trouvant en dessous du restant de la lèvre (3, 3'),
    - la zone marginale de la bride (7) près de son extrémité libre, est fixée par un assemblage mécanique à la zone initiale de la bride (7), par l'intermédiaire d'un moyen mécanique, fermeture caractérisée en ce que
    le film (4) est fixé exclusivement à la zone plate (8) de la lèvre (3, 3').
  2. Fermeture de boîtes de conserves selon la revendication 1, caractérisée en ce que
    la zone marginale de la bride (7) à proximité de son extrémité libre, se trouve sur le côté intérieur du conteneur couvert par le film (4) thermosoudé.
  3. Fermeture de boîtes de conserves selon la revendication 1, caractérisée en ce que
    la zone marginale de la bride (7) à proximité de son extrémité libre, se trouve sur le côté extérieur du conteneur, en étant protégée du contenu à l'intérieur du conteneur.
  4. Fermeture de boîtes de conserves selon l'une des revendications précédentes,
    caractérisée en ce que
    la lèvre (3) est réalisée sous la forme d'une pièce physiquement indépendante du corps (1) du conteneur et fixée à l'ouverture de celui-ci par un sertissage.
  5. Fermeture de boîtes de conserves selon l'une des revendications précédentes,
    caractérisée en ce que
    la lèvre périphérique (3') est réalisée en une seule pièce avec le corps de la boîte de conserves (1).
  6. Fermeture de boîtes de conserves selon l'une des revendications 1 à 5,
    caractérisée en ce que
    le film (4) qui sert de couvercle, a un prolongement par une poignée (5).
EP04725951A 2003-04-08 2004-04-06 Fermeture pour conserves Revoked EP1626008B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200300827A ES2246634B1 (es) 2003-04-08 2003-04-08 Cierre para latas.
PCT/ES2004/000155 WO2004089769A1 (fr) 2003-04-08 2004-04-06 Fermeture pour conserves

Publications (2)

Publication Number Publication Date
EP1626008A1 EP1626008A1 (fr) 2006-02-15
EP1626008B1 true EP1626008B1 (fr) 2010-07-28

Family

ID=33155451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04725951A Revoked EP1626008B1 (fr) 2003-04-08 2004-04-06 Fermeture pour conserves

Country Status (5)

Country Link
EP (1) EP1626008B1 (fr)
DE (1) DE602004028360D1 (fr)
ES (1) ES2246634B1 (fr)
PE (1) PE20040967A1 (fr)
WO (1) WO2004089769A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH709571A1 (de) 2014-04-29 2015-10-30 Soudronic Ag Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln sowie ein Aufreissdeckel.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH413718A (de) * 1963-07-10 1966-05-15 Indive Gmbh Verpackungsschale, insbesondere für Lebensmittel
US4211338A (en) * 1979-05-08 1980-07-08 Reynolds Metals Company Container closure structure
US4438850A (en) * 1982-07-15 1984-03-27 Reynolds Metals Company Membrane closure structure
US4540105A (en) * 1984-08-13 1985-09-10 General Can Company, Inc. Closure opening having protective bead
DE9203953U1 (fr) * 1992-03-24 1992-07-23 Alcan Rorschach Ag, Rorschach, Ch
NL1013957C2 (nl) * 1999-12-24 2001-06-26 Impress Metal Packaging Bv Houder en een ring daarvoor.
CN1315698C (zh) * 2001-03-29 2007-05-16 纳瓦拉原料工业股份有限公司 盒子特别是罐头盒的密封装置

Also Published As

Publication number Publication date
EP1626008A1 (fr) 2006-02-15
PE20040967A1 (es) 2004-12-11
ES2246634B1 (es) 2007-04-16
ES2246634A1 (es) 2006-02-16
WO2004089769A1 (fr) 2004-10-21
DE602004028360D1 (de) 2010-09-09

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