EP0451053B1 - Metallischer Behälter, insbesondere für Nahrungsmittel - Google Patents

Metallischer Behälter, insbesondere für Nahrungsmittel Download PDF

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Publication number
EP0451053B1
EP0451053B1 EP19910400904 EP91400904A EP0451053B1 EP 0451053 B1 EP0451053 B1 EP 0451053B1 EP 19910400904 EP19910400904 EP 19910400904 EP 91400904 A EP91400904 A EP 91400904A EP 0451053 B1 EP0451053 B1 EP 0451053B1
Authority
EP
European Patent Office
Prior art keywords
receptacle
container
cylindrical wall
box
wall portion
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
EP19910400904
Other languages
English (en)
French (fr)
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EP0451053A1 (de
Inventor
Pierre Gachot
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0451053A1 publication Critical patent/EP0451053A1/de
Application granted granted Critical
Publication of EP0451053B1 publication Critical patent/EP0451053B1/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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/54—Inspection openings or windows

Definitions

  • the present invention relates to a metal box in particular for packaging food, comprising a container for example of substantially cylindrical shape which has a bottom and a lid mounted in leaktight manner on the edge of the container opposite said bottom.
  • Known boxes of this type are made from a thin sheet of tin, for example covered with a corrosion-resistant coating such as tin. These boxes are completely closed, so that consumers cannot see the contents of the box.
  • packaging for food in the form of glass jars which, because of their transparency, make it possible to see their content.
  • packaging is relatively heavy, brittle and expensive.
  • GB-A-1 200 469 describes a metal box provided with a plastic window.
  • the plastic can easily be scratched and deteriorate in contact with food.
  • Patent NL-A-46,207 describes a box provided with a window, but the latter has in particular the disadvantages that it projects outside the container and is insufficiently protected against lateral impacts.
  • the object of the present invention is to propose a method for creating a metal box, in particular for packaging food, which allows the consumer to see the contents of this box and nevertheless ensures good protection of the window.
  • the invention therefore relates to a method for the manufacture of a metal can, in particular for the packaging of food, comprising a container which has a bottom and a lid mounted in leaktight manner on the edge of the container opposite said bottom.
  • this transparent plate offers consumers or anyone else can examine the contents of the box. Given that this transparent plate is mounted in a sealed manner in the bottom and / or the lid of the metal container, it does not compromise either the rigidity of the box, or the sealing of the latter.
  • this plate is a glass disc which resists scratches and whose transparency is not likely to be impaired by prolonged contact with food.
  • the metal box in particular for the packaging of food such as caviar, comprises a container 1 of substantially cylindrical shape which has a bottom 2 and a cover 3 mounted in leaktight manner on the edge 4 of the container opposite said bottom 2.
  • the cover 3 comprises an annular rib 5 projecting inwardly which snaps onto the rolled edge 4 of the container.
  • the cover 3 also includes a seal 6 which rests on the edge 4 of the container 1.
  • the bottom 2 of the container 1 has an opening 7 in which is mounted in a sealed manner a plate made of transparent material constituted in the example represented by a glass disc 8.
  • the glass disc 8 occupies more than half of the surface of the bottom 2 of the container 1.
  • FIGS. 1 and 2 It can also be seen in FIGS. 1 and 2 that the peripheral edge 8a of the glass disc 8 is engaged in an annular groove 9 of U-shaped section produced by folding the metal wall of the bottom 2 of the container 1.
  • a flexible sealing material 10 is included between the bottom of the U-shaped groove 9 and the edge 8a of the glass disc 8. In addition, this groove 9 projects inside the container 1.
  • the wing 9a of the U-shaped groove 9 adjacent to the bottom 2 of the container 1 is connected to the wall of said bottom by a fold 11 of this wall, the parts 2a and 9a of this wall adjacent to the fold 11 being applied against each other (see in particular Figure 2).
  • the glass disc 8 is separated from the outer surface 2b of the bottom 2 by a distance d corresponding substantially to twice the thickness of the wall of the bottom 2, which shelters the disc 8 the abrasion caused by contact between this disc 8 and a hard surface.
  • the glass disc 8 is not only perfectly fixed to the bottom 2 but also contributes to the rigidity of this background 2.
  • the sealing material 10 between the bottom of the groove 9 in a U and the peripheral edge of the disc 8 provides excellent sealing guaranteeing perfect preservation of the food contained in the box.
  • the glass disc 8 allows the consumer to see the contents of the box. So, if it contains caviar, he can appreciate the quality of it and buy the box with confidence.
  • FIG. 3 represents a continuous strip 12 of tinplate or aluminum sheet covered with a food-grade protective coating.
  • a container 13 is produced by stamping in the metal sheet 12.
  • a second step see FIG. 4
  • the external face of the bottom of the container 13 is stamped to make a bowl 14 in said bottom protruding towards the inside of the container.
  • a flexible sealing material 20 for example based on elastomer, is applied to the cylindrical wall part 19.
  • the sealing material 20 After the sealing material 20 has hardened, the following is placed (see FIG. 9) a glass disc 8 in the housing delimited by the cylindrical wall part 19 and the crimped fold 18.
  • an annular molding 21 is formed on the side wall of the container and its edge 22 is rolled up.
  • glass disc 8 could also be mounted in a sealed manner in the cover of the box, as defined in claim 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Frangible Articles (AREA)
  • Packages (AREA)

Claims (2)

  1. Verfahren zum Herstellen von Metalldosen, insbesondere zum Verpacken von Lebensmitteln, bestehend aus einem Behälter (13) mit einem Boden und einem dicht auf dem Rand des Behälters gegenüber dem Boden angebrachten Deckel, dadurch gekennzeichnet, daß es aus folgenden Arbeitsschritten besteht:
    - Tiefziehen eines Behälters (13) aus Blech (12),
    - Tiefziehen der Außenseite von Deckel und Boden des Behälters (13), um in dem Deckel bzw. Boden eine Vertiefung (14) herzustellen, die ins Innere des Behälters hineinragt,
    - Ausschneiden des Bodens (15) der Vertiefung (14),
    - Herstellung eines ringförmigen Falzrandes (18) auf dem die ausgeschnittene Öffnung (16) umgebenden ringförmigen Teil (17), wobei der Falz (18) in Richtung der Achse (X-X′) des Behälters (13) übersteht und von einem ins Innere des Behälters (13) reichenden zylindrischen Wandteil (19) verlängert wird,
    - Anbringen einer elastischen Dichtungsmasse (20) auf der oben genannten zylindrischen Wandteil (19),
    - Anbringen einer Glasscheibe (8) in der von der zylindrischen Wand (19) und dem Falzrand (18) gebildeten Aufnahme,
    - Umfalzen der zylindrischen Wand (19) um die Glasscheibe (8).
  2. Nach dem Verfahren nach Patentanspruch 1 hergestellte Dose, dadurch gekennzeichnet, daß die Glasscheibe (8) mehr als die Hälfte der Fläche des Bodens ausmacht.
EP19910400904 1990-04-04 1991-04-03 Metallischer Behälter, insbesondere für Nahrungsmittel Expired - Lifetime EP0451053B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004305A FR2660624B1 (fr) 1990-04-04 1990-04-04 Boite metallique, notamment pour le conditionnement d'aliments.
FR9004305 1990-04-04

Publications (2)

Publication Number Publication Date
EP0451053A1 EP0451053A1 (de) 1991-10-09
EP0451053B1 true EP0451053B1 (de) 1994-06-22

Family

ID=9395437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910400904 Expired - Lifetime EP0451053B1 (de) 1990-04-04 1991-04-03 Metallischer Behälter, insbesondere für Nahrungsmittel

Country Status (3)

Country Link
EP (1) EP0451053B1 (de)
DE (1) DE69102570D1 (de)
FR (1) FR2660624B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2759676B1 (fr) * 1997-02-14 1999-05-14 Sofrigam Emballage isotherme

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE699190A (de) * 1967-05-30 1967-11-03

Also Published As

Publication number Publication date
FR2660624A1 (fr) 1991-10-11
DE69102570D1 (de) 1994-07-28
EP0451053A1 (de) 1991-10-09
FR2660624B1 (fr) 1994-06-17

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