EP2025596B1 - Hermetisch versiegelbarer Behälter und Verfahren zur Herstellung des Behälters - Google Patents

Hermetisch versiegelbarer Behälter und Verfahren zur Herstellung des Behälters Download PDF

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Publication number
EP2025596B1
EP2025596B1 EP08161080A EP08161080A EP2025596B1 EP 2025596 B1 EP2025596 B1 EP 2025596B1 EP 08161080 A EP08161080 A EP 08161080A EP 08161080 A EP08161080 A EP 08161080A EP 2025596 B1 EP2025596 B1 EP 2025596B1
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EP
European Patent Office
Prior art keywords
container
tub
tuck
barrier
sealing
Prior art date
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Active
Application number
EP08161080A
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English (en)
French (fr)
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EP2025596A1 (de
Inventor
Walter Sintoni
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.)
Ipack Srl
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Ipack Srl
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Publication of EP2025596A1 publication Critical patent/EP2025596A1/de
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Classifications

    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/08—Forming three-dimensional containers from sheet material
    • 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
    • B65B7/28—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 separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2871—Securing closures on containers by gluing
    • 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
    • B65B7/28—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 separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2878—Securing closures on containers by heat-sealing
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/28—Other details of walls
    • B65D3/30—Local reinforcements, e.g. metallic rims
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2025—Multi-layered container, e.g. laminated, coated

Definitions

  • This invention relates to the preservation of fresh food products and, in particular, concerns a container comprising a tub to hold and display the products and a sealing barrier, which may be sealed to the tub to define a closed and isolated containment cavity hermetically sealed from the surrounding environment.
  • the invention also relates to a method for manufacturing the container.
  • tub containers for the packaging and preservation of fresh products tub containers are employed in which the walls of the tub are made of a paper material and coated with waterproofing film layers made from material compatible, on the one hand, with the products to be contained and, on the other, with the heat treatments (e.g. for preservation purposes) applied to the above-mentioned products and to the container.
  • the thicknesses of the paper material are normally relatively high - even if measurable in millimetres - so as to grant a structural rigidity to the tub adequate for its purpose.
  • the film materials consist, on the other hand, of thinner coatings applied to the layer of cellulose material to make it impermeable and non-breathable with respect to the content and the outside environment.
  • the sealing barriers are normally made from film, of an identical nature to the films used for coating the paper material, which are stretched over the tub after filling and then heat sealed to the edges of the tub to hermetically seal the inside space, thereby preserving the contents.
  • shelf inert gases may also be introduced into the tub cavity with the aim of both protecting the contained product against the possibility of interaction with oxidising agents and/or contaminants in the atmosphere, and balancing the internal pressure of the container with the external atmospheric pressure to make the penetration of air inside the cavity more difficult.
  • a much desired objective of the above-mentioned technology is the obtainment of methods to increasingly extend the shelf life of the products.
  • containers made from paper material such a result is always difficult to achieve as the manufacturing of the container by deep drawing a flat sheet of paper material forms thin folds - as is particularly evident inside the corners of the container and inside the cavity - with overlapping of the materials thereby forming channels which, even though they are narrow, are practically uninterruptible and may bring the outside environment into communication with the inside cavity of the container.
  • Document DE-A-38 14 520 which is regarded as the closest prior art, discloses a container comprising a tuck located on the surrounding wall.
  • the fundamental problem to be solved remains that of providing edge structures able to substantially provide an equally effective answer to the contrasting aspects of the problem concerning, on the one hand, hermetic seal and, on the other, structural rigidity.
  • the main aim of this invention is therefore to provide a container whose sealing and structural strength characteristics are substantially equivalent to each other in terms of relative importance.
  • Another aim of this invention is to provide a container able to provide a longer shelf life compared with prior art containers.
  • a further aim of the present invention is to provide containers which may be manufactured economically, bearing in mind that that they are substantially single-use disposable containers.
  • Yet another aim of the present invention is to provide a fully biodegradable and fully compostable container without residue of any kind in the environment when disposed of as waste.
  • the container 1 essentially comprises (see figure 2 ) a tub 2 and a sealing barrier 3 which may be reciprocally heat sealed to define a cavity 4 to hold the product closed and isolated from the surrounding environment.
  • the tub 2 has a top edge 5 running continuously along its border and comprises a wall 6 surrounding the containment cavity 4, consisting of a first stratiform element 7 made of cellulose material coated on both sides, in a first embodiment, by layers 8 of film material (see in particular figure 3 ), or, in a second embodiment (see in particular figure 5 ), coated only on the inside of the cavity 4 by a single layer 8.
  • the first stratiform element 7 is made from paper material with a thickness of a few millimetres.
  • the single or double layer 8 of film material which is much thinner, consists of films of material compatible with the product to be contained and/or with the heat treatment the product is to undergo in association with the container 1.
  • the heat treatment may be of the most generic type, since it may include, for example, both the cooling and low-temperature preservation, and, if necessary, the heating of the product together with its container, before consumption.
  • Possible materials used for forming the film coating layer 8 may be polymeric film materials selected, for example, from the family of polyethylene materials or, also, from the family of polypropylene materials.
  • Figure 2 shows that the container 1 comprises a tuck 9 remote to the containment cavity 4 and having an edge 10 and a tongue 11.
  • the tuck 9 is located on the surrounding wall 6, and, in more detail, is monolithically integrated in the wall 6 itself of which it forms a more peripheral part.
  • the container 1 also comprises, preferably but without limiting the scope of the invention, an annular element 14 made of cellulose material coated on both sides with layers 8 of film material identical to those of the wall 6 surrounding the cavity 4 of the tub 2.
  • the annular element 14 has a perimeter edge, labelled 16, and may be associated with a top zone 15 of the tub 2 - which substantially comprises the edge 5 and the upper part of the wall 6; the purpose of the annular element 14 is to structurally stiffen the top zone 15, that is, the container 1 as a whole.
  • the tuck 9 may be bent back onto itself to at least partially cover the top edge 5 of the tub 2, in a remote location with respect to the wall 6 surrounding the cavity 4.
  • the tuck 9 has an edge 10 and a tongue 11 which may be overlapped after bending (see arrows F11 in figure 2 ).
  • the perimeter edge 16 of the annular element 14 is placed between the edge 10 and the tongue 11 of the tuck 9. In this way, the edge 10 and the tongue 11 may be heat sealed, at the two distinct partitions 12 and 13 of a same layer 8 of film material, to the two opposite faces of the edge 16 of the annular element 14.
  • the tuck 9 may be permanently associated directly to the sealing barrier 3 which covers it along the entire border of the container 1.
  • the container 1 makes it evident that in virtue of the overlapping of several stratiform paper elements and in virtue also of the jointing by gluing or heat sealing provided between the film layers 8 placed between one stratiform element and the other, the container 1 has a high overall structural rigidity accompanied also by a high degree of hermetic seal. With regard to this last aspect, it may be seen that a single space is formed between the barrier 3 and the wall 6, glued or heat sealed together at the tongues 11, which is fully closed and, therefore, prevents any possible communication with the outside environment.
  • annular stiffening element 14 it may be noted that as a result of the surface extension and the multiplicity of heat seals between the layers of film material 8 facing each other, the intercommunication between the inside chamber 4 and the environment surrounding the closed container 1 is made even more difficult, which leads to a further increase in the hermetic seal of the container 1.
  • the degree of hermetic seal of the container 1 is increased even further by the contribution of a further characteristic visible in figure 2 and shown even more clearly in figure 4 . It may be seen from the figures that the tongue 11, the barrier 3 and the surface 17 or 5, 6 and 12 inside the container 1, that is, the surface of the annular element 14 facing towards the barrier 3, also delimit a maze-like passage 18 functionally placed between the containment cavity 4 of the tub 2 and the outside environment.
  • this passage 18 constitutes a considerable obstacle to the penetration into the chamber 4 of air coming from the outside of the container 1, and an equally considerable obstacle to the escape to the outside of the chamber 4 of the gases present in the product containment cavity 4.
  • the container 1 described above may be obtained with a method comprising the following essential steps:
  • the method may also, advantageously comprise:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Cartons (AREA)

Claims (12)

  1. Hermetisch versiegelbarer Behälter zum Bereithalten und Präsentieren von verderblichen Produkten, insbesondere Frischkostprodukten, umfassend eine Wanne (2) und eine abdichtende Abdeckung (3), die miteinander heißgesiegelt werden können, um einen Hohlraum (4) zu definieren, der das Produkt abgeschlossen und von der Umgebung isoliert enthält; wobei die Wanne (2) einen oberen Rand (5) hat und eine den Einschließungshohlraum (4) umgebende Wand (6) aufweist, die ein erstes geschichtetes Element (7) hat, das aus Zellulosematerial hergestellt ist, das mindestens an der Innenseite des Hohlraums (4) mit einer Schicht (8) aus Folienmaterial versehen ist, sowie eine Lasche (9), die sich an der Umfassungswand (6) befindet und mindestens mit der abdichtenden Abdeckung (3) dauerhaft verbunden werden kann und eine Kante (10) und eine gebogene Zunge (11) hat; wobei der Behälter (1) dadurch gekennzeichnet ist, dass er ein ringförmiges Element (14) aufweist, das aus Zellulosematerial hergestellt ist, das beidseitig mit Schichten (8) aus Folienmaterial versehen ist, wobei das ringförmige Element (14) mit einer oberen Zone (15; 5, 6) der Wanne (2) verbunden ist, um ihr eine größere Strukturfestigkeit zu verleihen; wobei das ringförmige Element (14) einen Umfangsrandstreifen (16) hat, der zwischen der Kante (10) und der Zunge (11) der Lasche (9) eingefügt und auf jeweilige Bereiche (12, 13) einer Einfachschicht (8) aus Folienmaterial an der Kante (10) und der Zunge (11) heißgesiegelt ist.
  2. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass die Lasche (9) durch Kleben mindestens mit der Abdeckung (3) dauerhaft verbunden ist.
  3. Behälter nach Anspruch 1, wobei das erste geschichtete Element (7), hergestellt aus Zellulosematerial, beidseitig mit Schichten (8) aus Folienmaterial versehen ist, dadurch gekennzeichnet, dass die Lasche (9) mindestens an die abdichtende Abdeckung (3) heißgesiegelt werden kann.
  4. Behälter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Material der Folienbeschichtung (8) ein mit dem aufzunehmenden Produkt und/oder mit der Wärmebehandlung, der das Produkt in Verbindung mit dem Behälter (1) unterzogen werden soll, verträgliches Material ist.
  5. Behälter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Material der Folienbeschichtung (8) ein Polymerwerkstoff ist, der aus der Familie der Polyethylene ausgewählt ist.
  6. Behälter nach einem der vorhergehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Material der Folienbeschichtung (8) ein Polymerwerkstoff ist, der aus der Familie der Polypropylene ausgewählt ist.
  7. Behälter nach einem der vorhergehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Material der Folienbeschichtung (8) ein Biomassematerial ist.
  8. Behälter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Lasche (9) an der Umfassungswand (6), außerhalb des Einschließungshohlraums (4) der Wanne (2) befindet.
  9. Behälter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zunge (11), die Abdeckung (3) und mindestens eine Oberfläche (17; 5, 6, 12) an der Innenseite des Behälters (1) einen labyrinthartigen Durchgang (18) abgrenzen, der funktionsbedingt zwischen dem Einschließungshohlraum (4) der Wanne (2) und der äußeren Umgebung angeordnet ist.
  10. Verfahren zum Herstellen von Behältern, Präsentationsmitteln, für verderbliche Produkte, insbesondere Frischkostprodukte, wobei der Behälter (1) eine Wanne (2) und eine abdichtende Abdeckung (3), die miteinander heißgesiegelt werden können, umfasst, wobei das Verfahren die folgenden Schritte umfasst:
    - spanloses Umformen in die Form einer Wanne (2) mit einem Einschließungshohlraum (4) und einer Wand (6), die den Einschließungshohlraum (4) umgibt, einem ersten geschichteten Element (7), das aus Zellulosematerial hergestellt ist, das mindestens an der Innenseite, die den Einschließungshohlraum (4) abgrenzt, mit einer Schicht (8) aus Folienmaterial versehen ist;
    - Verbinden der Wanne (2) mit einem ringförmigen Element (14), das aus Zellulosematerial hergestellt ist, das beidseitig mit Schichten (8) aus Folienmaterial versehen ist; wobei das Verfahren dadurch gekennzeichnet ist, dass es die Schritte umfasst:
    - Heißsiegeln des ringförmigen Elements (14) derart, dass es mit einer Innenseitenfläche (17; 5, 6, 12) der Wanne (2) überlappt;
    - Zurückbiegen einer Zunge (11) einer Umfangslasche (9) des ersten geschichteten Elements (7) auf sich selbst bei gleichzeitigem Einschieben eines Umfangsrandstreifens (16) des ringförmigen Elements (14);
    - Heißsiegeln der Zunge (11) der Lasche (9) an den Randstreifen (16) des ringförmigen Elements (14);
    - Versiegeln des Behälters (11) nach dem Befüllen mit den Produkten durch dauerhaftes Verbinden, in Direktkontakt, einer abdichtenden Abdeckung (3) mit der Lasche (9).
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass der Versiegelungsschritt ausgeführt wird, indem die Abdeckung (3) und die Lasche (9) zusammengeklebt werden.
  12. Verfahren nach Anspruch 10, wobei das erste geschichtete Element (7), hergestellt aus Zellulosematerial, beidseitig mit Schichten (8) aus Folienmaterial versehen ist, dadurch gekennzeichnet, dass der Versiegelungsschritt zwischen der Lasche (9) und der Abdeckung (3) ausgeführt wird, die heißgesiegelt werden.
EP08161080A 2007-08-03 2008-07-24 Hermetisch versiegelbarer Behälter und Verfahren zur Herstellung des Behälters Active EP2025596B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000557A ITBO20070557A1 (it) 2007-08-03 2007-08-03 Contenitore sigillabile a tenuta ermetica e relativo metodo di fabbricazione.

Publications (2)

Publication Number Publication Date
EP2025596A1 EP2025596A1 (de) 2009-02-18
EP2025596B1 true EP2025596B1 (de) 2010-04-07

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EP08161080A Active EP2025596B1 (de) 2007-08-03 2008-07-24 Hermetisch versiegelbarer Behälter und Verfahren zur Herstellung des Behälters

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EP (1) EP2025596B1 (de)
AT (1) ATE463423T1 (de)
DE (1) DE602008000951D1 (de)
IT (1) ITBO20070557A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2805821T6 (pl) 2013-05-21 2017-10-31 Cryovac Inc Folia termokurczliwa tworząca barierę dla gazów
JP2015231870A (ja) * 2014-05-13 2015-12-24 凸版印刷株式会社 蓋材とそれを用いた包装容器
CN109195790B (zh) 2016-06-01 2021-07-23 克里奥瓦克公司 阻气可热收缩膜
ES1261579Y (es) * 2020-09-24 2021-05-25 Ipack S R L Contenedor para productos alimenticios

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814520A1 (de) * 1988-04-29 1989-11-09 Unilever Nv Tiefgezogener schalenfoermiger behaelter
US5348752A (en) * 1993-05-20 1994-09-20 World Class Packaging Systems, Inc. Dual state food packaging

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EP2025596A1 (de) 2009-02-18
DE602008000951D1 (de) 2010-05-20
ATE463423T1 (de) 2010-04-15
ITBO20070557A1 (it) 2009-02-04

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