EP0399981B1 - Verfahren zum Verschliessen einer Verpackung - Google Patents

Verfahren zum Verschliessen einer Verpackung Download PDF

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Publication number
EP0399981B1
EP0399981B1 EP90850205A EP90850205A EP0399981B1 EP 0399981 B1 EP0399981 B1 EP 0399981B1 EP 90850205 A EP90850205 A EP 90850205A EP 90850205 A EP90850205 A EP 90850205A EP 0399981 B1 EP0399981 B1 EP 0399981B1
Authority
EP
European Patent Office
Prior art keywords
tray
lid
plastic film
package
film
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
EP90850205A
Other languages
English (en)
French (fr)
Other versions
EP0399981A3 (de
EP0399981A2 (de
Inventor
Häkan Ingemarsson
Katarina Axelsson
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.)
Cerbo AB
Original Assignee
Cerbo AB
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 Cerbo AB filed Critical Cerbo AB
Publication of EP0399981A2 publication Critical patent/EP0399981A2/de
Publication of EP0399981A3 publication Critical patent/EP0399981A3/de
Application granted granted Critical
Publication of EP0399981B1 publication Critical patent/EP0399981B1/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
    • 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
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/168—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying and securing double closures

Definitions

  • the present invention relates to a method for sealing a package.
  • the package comprises a tray and a lid, which tray is made of plastics material and is especially intended for keeping ready-cooked food and heating of same in a microwave oven, and which is made of cardboard and/or plastics material.
  • a package fulfilling these requirements comprises an aluminium tray with a card-board and/or aluminium lid which is attached to the tray by folding the edges surrounding the opening of the tray inwardly over the lid, and which can be removed therefrom after said edges have been folded away from the lid.
  • Disadvantages of this package are that sealing is carried out manually, that the food cannot be heated inside the package in a microwave oven and that the sealing will not be liquidproof.
  • a package in which the food can be heated in a microwave oven and which can be sealed mechanically comprises a tray of plastics material such as CPET and a lid made of plastic-coated cardboard, which lid can be welded (heat-sealed) to the edges of the tray opening.
  • CPET plastics material
  • lid made of plastic-coated cardboard, which lid can be welded (heat-sealed) to the edges of the tray opening.
  • a disadvantage of this kind of package is that the lid is difficult to remove from the tray and often breaks when being removed.
  • FR-A-1 379 891 discloses a tray and two superimposed thermoplastic lids which are connected to the tray in two separate operations with the connection lines between the tray and the lids at a distance from each other.
  • CH-A-475 883 discloses a polypropylene tray and a lid comprising a polypropylene sheet covered by an ethylene layer. The layer is welded to the tray so that the lid can be easily removed from the tray.
  • the one figure of the drawing is a schematic, exploded perspective view showing sealing of a package according to the invention.
  • the package according to the invention comprises a tray 1 of thermoformed CPET with an opening surrounded by a folded, approximately 5 mm wide edge which extends round the whole of the tray 1, a lid 2 of cardboard and plastics material, suitably a material marketed under the name of Invercote (registered trademark) G + AP (ethylene acrylic acid), and a film or sheeting 3 of polyester, suitably a film marketed under the name of Mylar (registered trademark) OL.
  • the materials of the tray 1, lid 2 and film 3 are heat-sealable to each other, however, if the lid were to be heat-sealed (welded) straight onto the tray, it would not be possible to remove it from the tray without it being destroyed (torn).
  • the figure shows the package being sealed.
  • the tray 1 After the tray 1 has been filled with ready-cooked food, it is placed on a support 4 provided with a rubber plate 5 with upwardly oriented edges 5a surrounding the base of the tray. This can be done manually or by means of a suitable feeding device.
  • a roll 6, on which the film 3 is wound in the form of a band, is located over and adjacent the support 4.
  • the width of the roll 6 and therefore of the film 3 corresponds to or is slightly wider than the length of the tray 1, i.e. the greatest distance between opposite parts of the edges 1a.
  • the film 3 For each tray 1 placed on the plate 5, the film 3 is intended to be advanced immediately over or in contact with the tray in the direction of the arrow a distance which corresponds to or is slightly longer than the width of the tray, by a suitable device not shown in the figure.
  • the lid 2 is placed, manually or by a device not shown, on top of the film 2 exactly over the tray 1.
  • the area of the lid 2 is selected such that the lid will cover the tray opening and the entire edge 1a.
  • a welding head 7 At a distance over the plate 5 slightly exceeding the height of the tray 1 there is arranged a welding head 7.
  • the head 7 is provided with a lower plane surface, the area of which corresponds to the area of the lid 2.
  • the head 7 is movable towards and away from the tray 1 with the film 3 and lid 2 thereon, and its temperature is such that heat-sealing or welding of the film to the tray and of the lid to the film will take place when the head is briefly pressed against these.
  • a sleeve 8 with a heated, lipshaped lower edge 8a which sleeve surrounds the welding head 7 and is guided by same, is carried downwardly towards the tray 1, whereby the film 3 will melt immediately outside the lid 2 so that the parts of the film surrounding the lid will be separated from the now finished package, which will then be removed from the support 4 either manually or by some suitable feeding-out device.
  • a package the contents of which can be heated in a microwave oven (also with the lid attached), and the top side of which can be preprinted or provided with print or the like in connection with sealing and the lid of which can be removed by the so called peel-off effect, i.e. the film is easily removable from the tray without the lid getting torn or destroyed in some other way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Package Specialized In Special Use (AREA)
  • Closing Of Containers (AREA)
  • Package Closures (AREA)

Claims (3)

  1. Verfahren zum Verschließen einer Verpackung, bestehend aus einem Behälter (1) und einem Deckel (2), wobei der Behälter aus Kunststoffmaterial hergestellt ist und insbesondere zur Aufbewahrung von kochfertigen Nahrungsmitteln und zum Erhitzen derselben in einem Mikrowellenofen dient und der Deckel aus Pappe und/oder Kunststoffmaterial hergestellt ist, wobei das Verfahren umfaßt, daß der Behälter mit seinem Inhalt auf einem Träger (4, 5) plaziert wird, daß ein Kunststoffilm (3), dessen Flächen größer als diejenige der Behälteröffnung ist, oberhalb der Behälteröffnung angeordnet wird, und daß der Deckel, dessen Fläche größer als die Behälteröffnung ist, auf der Oberseite des Kunststoffilms angeordnet wird, dadurch gekennzeichnet, daß der Kunststoffilm (3) mit dem Behälter (1) und der Deckel (2) mit dem Kunststoffilm in einem und demselben Arbeitsvorgang verschweißt werden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Flache des Kunststoffilms (3) wesentlich großer als diejenige des Deckels (2) ist, wenn der Kunststoffilm über dem Behälter angeordnet wird, und auf die im wesentlichen gleiche Längen/Breitenabmessung, wie der Deckel in Verbindung mit dessen Verschweißung mit dem Behälter (1) gebracht wird.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der Kunststoffilm (3) in Form eines Bandes bis in eine Lage über dem Behälter (1) vorgeschoben wird, in welcher der Kunststoffilm auf die im wesentlichen gleiche Längen/Breitenabmessung wie der Deckel (2) durch Trennung mittels Hitze gebracht wird.
EP90850205A 1989-05-24 1990-05-23 Verfahren zum Verschliessen einer Verpackung Expired - Lifetime EP0399981B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8901848 1989-05-24
SE8901848A SE464629B (sv) 1989-05-24 1989-05-24 Foerfarande foer foerslutning av foerpackning

Publications (3)

Publication Number Publication Date
EP0399981A2 EP0399981A2 (de) 1990-11-28
EP0399981A3 EP0399981A3 (de) 1991-04-17
EP0399981B1 true EP0399981B1 (de) 1993-12-01

Family

ID=20376038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90850205A Expired - Lifetime EP0399981B1 (de) 1989-05-24 1990-05-23 Verfahren zum Verschliessen einer Verpackung

Country Status (5)

Country Link
EP (1) EP0399981B1 (de)
DE (1) DE69004859D1 (de)
FI (1) FI902571A0 (de)
NO (1) NO902278L (de)
SE (1) SE464629B (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9003353L (sv) * 1990-10-19 1992-04-20 Cerbo Ab Foerpackning samt foerfarande foer dess foerslutning
SE504159C2 (sv) * 1992-04-02 1996-11-25 Tony Noren Metod för att försluta ett tråg med ett lock som har fönsteröppning
US5888599A (en) * 1993-04-19 1999-03-30 E. I. Du Pont De Nemours And Company Multi-layer lidding film having improved heat seal properties and methods relating thereto
US5484984A (en) * 1994-03-04 1996-01-16 Gics & Vermee, L.P. Ovenable food package including a base with depending leg member and a plurality of raised portions and associated food packages
WO1996004186A1 (en) * 1994-08-03 1996-02-15 Gics & Vermee, L.P. Ovenable food package
US5492703A (en) * 1994-08-30 1996-02-20 Gics & Vermee, L.P. Food package including a food package tray partially surrounded by a food package jacket and an associated method
WO1996015049A1 (en) * 1994-08-03 1996-05-23 Gics & Vermee, L.P. Food product container
WO1996014982A1 (en) * 1994-08-30 1996-05-23 Gics & Vermee, L.P. Method of making a food package and an associated apparatus
US5565228A (en) * 1995-05-02 1996-10-15 Gics & Vermee, L.P. Ovenable food product tray and an ovenable food product package
US5709308A (en) * 1995-06-06 1998-01-20 Gics & Vermee, L.P. Food product container including a tray and a jacket and an associated food product package
US5743402A (en) * 1997-03-18 1998-04-28 Gics & Vermee, L.P. Food package including a tray and a sleeve
US5900263A (en) * 1997-06-26 1999-05-04 Gics & Vermee, L.P. Food package having a rigid leg member for displaying the front panel thereof
AU772942B2 (en) * 1998-12-21 2004-05-13 Johnson & Johnson Vision Care, Inc. Heat seal apparatus for lens packages

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1379891A (fr) * 1963-12-09 1964-11-27 Quaker Oats Co Récipient à fermeture étanche en matière plastique moulée, particulièrement pour produits alimentaires
CH475883A (de) * 1967-07-18 1969-07-31 Tedeco Verpackung Gmbh Packung, insbesondere für Nahrungsmittel, und Verfahren zu ihrer Herstellung
CH503626A (de) * 1970-08-06 1971-02-28 Schneiter Riniker Kurt Verpackungsbehälter, insbesondere für Fleischwaren
FR2383833A1 (fr) * 1977-03-14 1978-10-13 Erca Procede et installation de fermeture et de scellement de recipients
AT359908B (de) * 1978-06-08 1980-12-10 Vmw Ranshofen Berndorf Ag Getraenkeverpackung fuer stille und kohlen- saeureversetzte getraenke
GB2123786A (en) * 1982-05-14 1984-02-08 Bowater Packaging Ltd Covered containers

Also Published As

Publication number Publication date
SE464629B (sv) 1991-05-27
FI902571A0 (fi) 1990-05-23
SE8901848L (sv) 1990-11-25
SE8901848D0 (sv) 1989-05-24
DE69004859D1 (de) 1994-01-13
EP0399981A3 (de) 1991-04-17
EP0399981A2 (de) 1990-11-28
NO902278D0 (no) 1990-05-23
NO902278L (no) 1990-11-26

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