EP0442770B1 - Verpackung aus Metall mit heissgesiegeltem Deckel und Verfahren zum Herstellen einer solchen Verpackung - Google Patents

Verpackung aus Metall mit heissgesiegeltem Deckel und Verfahren zum Herstellen einer solchen Verpackung Download PDF

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Publication number
EP0442770B1
EP0442770B1 EP91400130A EP91400130A EP0442770B1 EP 0442770 B1 EP0442770 B1 EP 0442770B1 EP 91400130 A EP91400130 A EP 91400130A EP 91400130 A EP91400130 A EP 91400130A EP 0442770 B1 EP0442770 B1 EP 0442770B1
Authority
EP
European Patent Office
Prior art keywords
heat
cover
rim
package
opening
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
EP91400130A
Other languages
English (en)
French (fr)
Other versions
EP0442770A1 (de
Inventor
Gérard Sautereau
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 European Holdings SA
Original Assignee
CarnaudMetalbox 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
Application filed by CarnaudMetalbox SA filed Critical CarnaudMetalbox SA
Publication of EP0442770A1 publication Critical patent/EP0442770A1/de
Application granted granted Critical
Publication of EP0442770B1 publication Critical patent/EP0442770B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/38—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by soldering, welding, or otherwise uniting opposed surfaces

Definitions

  • the invention relates to a new type of packaging with a heat-sealed lid called “peelable”, in particular intended for canned canned food, it also relates to a method of manufacturing such packaging.
  • a "three-piece” box (see document EP-A-0 001 690 (D1), on which the preambles of claims 1, 4 and 5 are based) comprises a box body, for example cylindrical, a bottom and a cover reported at both ends of said box body.
  • the bottom is generally fixed by crimping while the cover can optionally include or consist of a heat-sealed cap on a flange of said box body.
  • the latter is defined by a rectangular plate, two opposite edges of which are joined and welded.
  • Such a box body therefore comprises a longitudinal weld and therefore a more or less pronounced allowance, depending on the welding technique used.
  • the metal packaging includes a heat-sealed cover
  • this additional thickness poses a problem both for the formation of the fixing edge of the cover and for the feasibility and reliability of its heat-seal.
  • a so-called "two-piece” box comprises a box body obtained by stamping and a cover.
  • the latter can also be a heat-sealed lid.
  • the food canning industry is essentially divided into two branches of activity: the manufacturer of metal packaging and the user of such packaging, that is to say, for example the canner who processes food, fills the boxes and closes them.
  • a "three-piece" box with a heat-sealed lid is appreciated by the canner since filling can be done from the bottom, left open, the crimping of the bottom wall being a simple operation that can be easily carried out at the canner.
  • this type of box is difficult to manufacture and more particularly, as mentioned above, the subassembly consisting of the box body and the cover.
  • the invention proposes a new type of box combining all the advantages of the two known types of box, both for the packaging manufacturer, with regard to the fixing of the cover and for the user or preservative, acting on the filling and the final closing operations of the packaging.
  • the box body no longer has a longitudinal weld since it is obtained by stamping a sheet and the formation of the fixing rim of the cover as well as heat sealing can be carried out under better conditions.
  • the user has a filling opening made in the bottom of the package and the closing of the latter can be carried out in a traditional way by crimping a bottom wall.
  • FIG. 1 a The manufacture of the box body begins with the cutting of a sheet blank 11 (FIG. 1 a ) of suitable shape and dimensions. This blank then undergoes a stamping (generally by successive passes) similar to that which would be used for the manufacture of a can body of a so-called "two-piece" can.
  • a flat annular rim 13 is defined for fixing a heat-sealed cover (FIG. 1 b ).
  • the stamping ends with a knockout which results in the formation of a filling opening 14 opening here on the major part of the bottom wall of the box body 12.
  • This routing is carried out while leaving a straight length allowing the rim necessary for crimping to be formed 15.
  • the part of the bottom wall thus opened is intended to subsequently receive a bottom added by crimping.
  • a cover 16 "peelable" is heat sealed on the flange 13 ( Figure 1 c ).
  • this cover is cut from a composite sheet itself composed of a layer of aluminum and a layer of plastic material glued together, which does not exclude the use other materials.
  • the heat sealing operation is conventional and is carried out under the best conditions since the flat edge 13 is devoid of any excess thickness. In addition, this operation is carried out at the manufacturer of metal packaging.
  • the intermediate device shown in FIG. 1 c is delivered to the user (the canner) together with a bottom 18 of shape and dimensions adapted to those of the filling opening 14. Said intermediate device is then filled by the opening 14 (FIG. 2 a ) and the packaging is completed by crimping the bottom 18 (FIG. 2 b ) which definitively closes the filling opening 14.
  • Figures 3 to 5 show, by way of example, another embodiment of a metal package obtained by implementing the invention. It is a packaging more particularly intended to contain cooked food products. It is shaped like a plate allowing direct consumption in the packaging.
  • a can body 12 has stamped shaped metal ring, a wide flange 13 defined at the upper part of the box body and also forming here the rim of the plate, an added bottom 18 has crimped in place of a part of the bottom wall of the body of the stamped box and finally a cover 16 a , flexible and "peelable” heat-sealed on the rim 13 a of so as to close the opening of the plate-forming packaging.
  • the heat sealing of the cover 16 a is facilitated by the absence of any additional thickness on the rim 13 a , since the box body has not been materialized by welding.
  • the invention also covers the empty intermediate device, as shown diagrammatically in FIG. 1 c , and comprising only the box body stamped with an open bottom and the cover 16 heat-sealed at one end of said box body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)

Claims (6)

  1. Verpackung aus Metall, die in Kombination umfaßt:
    - einen Deckel (16), der mit dem Rand (13) der Öffnung eines Dosenrumpfes heißversiegelt ist;
    - einen Boden (18), der an die Stelle wenigstens eines Teils der Bodenwand des Dosenrumpfes angesetzt und fixiert ist;
    dadurch gekennzeichnet,
    daß der Dosenrumpf (12) tiefgezogen ist.
  2. Verpackung aus Metall nach Anspruch 1,
    dadurch gekennzeichnet,
    daß der angesetzte Boden (18) mit dem Rand (15) einer Füllöffnung (14) der Bodenwand verfalzt ist.
  3. Verpackung aus Metall nach Anspruch 1 oder 2,
    dadurch gekennzeichnet,
    daß sie merklich die Form eines Tellers besitzt, der mit einem flachen oberen Rand (13a) versehen ist, und das der Deckel (16a) an diesem oberen Rand heißversiegelt ist.
  4. Vorrichtung, die Teil einer Verpackung aus Metall ist, und die beinhaltet:
    - einen Dosenrumpf, bei dem zumindest ein Teil der Bodenwand offen ist und
    - einen Deckel (16), der an dem Rand (13) der Öffnung des Dosenrumpfes heißversiegelt ist;
    dadurch gekennzeichnet,
    daß der Dosenrumpf tiefgezogen ist.
  5. Verfahren zum Herstellen einer Verpackung aus Metall, welches insbesondere Arbeitsschritte umfaßt, die aus dem Heißversiegln eines Deckels (16) an die Öffnung des Rumpfes einer Dose bestehen,
    dadurch gekennzeichnet,
    daß es folgende Verfahrensvorgänge umfaßt:
    - Zuschneiden einer Metallrounde, derart, daß der Rumpf der Dose (12) definiert ist; und
    - Durchlochen/Durchstoßen der Bodenwand des Dosenrumpfes, um eine Füllöffnung (14) zu definieren, die mit einem Falzrand versehen wird.
  6. Verfahren nach Anspruch 5,
    dadurch gekennzeichnet,
    daß es daraus besteht, nach dem Füllen des besagten Dosenrumpfes (12) durch besagte Einfüllöffnung (14), die besagte Einfüllöffnung zu verschließen, indem man einen Boden (18) anfalzt, der an den besagten Falzrand (15) angesetzt wird.
EP91400130A 1990-01-26 1991-01-21 Verpackung aus Metall mit heissgesiegeltem Deckel und Verfahren zum Herstellen einer solchen Verpackung Expired - Lifetime EP0442770B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9000910A FR2657587B1 (fr) 1990-01-26 1990-01-26 Emballage metallique a opercule thermoscelle et procede de fabrication d'un tel emballage.
FR9000910 1990-01-26

Publications (2)

Publication Number Publication Date
EP0442770A1 EP0442770A1 (de) 1991-08-21
EP0442770B1 true EP0442770B1 (de) 1993-07-28

Family

ID=9393131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400130A Expired - Lifetime EP0442770B1 (de) 1990-01-26 1991-01-21 Verpackung aus Metall mit heissgesiegeltem Deckel und Verfahren zum Herstellen einer solchen Verpackung

Country Status (6)

Country Link
EP (1) EP0442770B1 (de)
AT (1) ATE91991T1 (de)
DE (1) DE69100189T2 (de)
DK (1) DK0442770T3 (de)
ES (1) ES2044686T3 (de)
FR (1) FR2657587B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692827B1 (fr) * 1992-06-30 1996-06-21 Lorraine Laminage Procede de fabrication d'une boite constituee d'un corps et d'un couvercle metallique.
GB9224572D0 (en) * 1992-11-21 1993-01-13 Metal Box Plc Containers
FR2722713B1 (fr) * 1994-07-25 1996-09-27 Metal Box Plc Procede de fabrication d'une boite metallique
DK3265389T3 (da) 2015-03-04 2019-10-14 Cie Generale De Conserve Konservesdåse med bøjelig bund og dertil svarende fremstillingsfremgangsmåde

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1601368A (en) * 1977-10-19 1981-10-28 Metal Box Co Ltd Containers

Also Published As

Publication number Publication date
DE69100189T2 (de) 1993-11-18
FR2657587B1 (fr) 1992-04-30
DE69100189D1 (de) 1993-09-02
ATE91991T1 (de) 1993-08-15
ES2044686T3 (es) 1994-01-01
EP0442770A1 (de) 1991-08-21
DK0442770T3 (da) 1993-11-22
FR2657587A1 (fr) 1991-08-02

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