EP0500891A1 - Bowl package - Google Patents

Bowl package

Info

Publication number
EP0500891A1
EP0500891A1 EP91916452A EP91916452A EP0500891A1 EP 0500891 A1 EP0500891 A1 EP 0500891A1 EP 91916452 A EP91916452 A EP 91916452A EP 91916452 A EP91916452 A EP 91916452A EP 0500891 A1 EP0500891 A1 EP 0500891A1
Authority
EP
European Patent Office
Prior art keywords
sealing
coating
sheet
sealing film
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.)
Withdrawn
Application number
EP91916452A
Other languages
German (de)
French (fr)
Inventor
Dieter Brettschneider
Eckart Schormair
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.)
Mars GmbH
Original Assignee
Effem GmbH
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 Effem GmbH filed Critical Effem GmbH
Publication of EP0500891A1 publication Critical patent/EP0500891A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/52—Oriented multi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • the invention relates to a bowl pack, in particular for holding portions of food in need of sterilization, such as animal feed or the like, with an open bottom part made of sheet metal, such as aluminum or steel, in the form of a bowl, a hollow cylinder or the like, on the upper edge of which a one-piece piece is provided with the lower part formed sealing edge, the upward-facing circumferential sealing surface runs substantially parallel to the bottom surface of the lower part, one the inner surface of the lower part and the sealing surface thereof covering, continuous inner coating as corrosion protection, which prevents the contents of the pack from coming into contact with the metal sheet of the lower part, and a sealing film made of metal foil, paper or the like, which is provided on its underside facing the lower part with a sealing film coating, wherein
  • the material selection of the inner coating and the sealing film coating using a plastic and a sealing wax component, such as polypropylene, polyethylene, polyethylene terephthalate or polycarbonate or a sealing wax compatible with this, is made such that when the sealing film is pressed onto the sealing
  • the lower part generally consists of a deep-drawn aluminum shell, while the sealing film can consist, for example, of a very thin aluminum film.
  • the lower part is coated on the inside with a plastic film or a plastic film of the type described at the outset, which prevents the contents of the package from directly contacting the corrosion-sensitive metal sheet of the lower part, which is, for. B. can also be a particularly thin steel sheet comes into contact.
  • the sealing film coating consists of a sealing varnish which is applied to the sealing film over the entire area and ensures that the sealing film is sealed gas-tight and liquid-tight to the lower part by pressing the sealing edge of the lower part using the appropriate pressure and heat.
  • the invention has for its object to develop the tray pack of the generic type in such a way that greater flexibility with regard to the choice of material for the sealing film is achieved while maintaining the sterilization ability, the tray pack should be stable and reliable in use.
  • this object is achieved in that the inner coating of the lower part consists of a sealing lacquer layer and the sealing film coating consists of a plastic film.
  • the sealing film coating is applied as a melt or solution film on the inner surface and the sealing edge of the lower part.
  • the sealing film coating consists of single- or multi-axis (high) stretched plastic material.
  • the invention is based on the surprising finding that it is possible to achieve the object in that the plastic film which is used as a corrosion coating for the lower part in the prior art and can only "play" its anti-corrosion properties here without the additional inherent property of plastic films, namely their toughness and high mechanical resistance, would be relocated to a more functional place, namely in their training as a sealing film coating, while the sealing wax, which was previously provided on the sealing film, namely in the prior art was used as an internal protective coating for the lower part.
  • the sealing wax which is not able to take over mechanical functions, thus serves two purposes in the invention as an inner coating for the lower part, namely on the one hand to ensure reliable corrosion protection of the lower part, but also also, as in the prior art, to enable a reliable seal in connection with the plastic film, while the plastic film brings out its properties, namely toughness and high mechanical transverse strength, which are not used in the conventional shell packs, as a sealing film coating. Since the actual sealing film material is largely relieved of the tasks of mechanical toughness and transverse strength, the sealing film material, for example the aluminum or steel sheet used, can be made much thinner than with conventional shell packs, with all the associated cost advantages. Materials can also be used that could not previously be used, such as. B. paper or the like, ie Materials with low mechanical strength.
  • the drawing consisting of a single figure shows a shell pack according to the invention in a vertical section through the longitudinal axis.
  • the shell pack according to the invention in the exemplary embodiment shown there has a lower part 10, which here consists of sheet steel with a thickness of 0.1 mm and is produced using the drawing method.
  • the lower part 10 is coated on its inner surface, including a sealing edge running essentially parallel to its bottom surface, with an inner coating 12 made of sealing wax, which is so thick that both the steel sheet of the lower part 10 is protected against corrosion and also reliable sealing is made possible.
  • a sealing foil 14, consisting of very thin aluminum foil, is provided on its underside with a sealing foil coating 16 in the form of a polypropylene foil.
  • the sealing film 14 can be connected to the lower part 10 in a known manner in a gas-tight and liquid-tight manner by applying pressure and heat along the sealing edge, with suitable selection of the sealing wax for the inner coating 12 and the material for the sealing film coating 16 it can be ensured that the filled and sealed package can be sterilized.
  • the idea of the invention can be provided to provide the corrosion-sensitive lower part with an inner coating of sealing wax which also serves as a corrosion layer, while a sealing film 14 covering the lower part can be provided with a mechanically resilient sealing film coating in the form that is compatible with the sealing lacquer of the inner coating 12 of the lower part 10 to equip a mechanically resilient plastic film, not only to use in the case of tray packs of the type described above, but e.g. B. also with canning-like containers and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)

Abstract

Emballage en coque, destiné notamment à recevoir des rations alimentaires nécessitant une stérilisation, par exemple des aliments pour animaux domestiques ou analogues, comprenant une partie inférieure ouverte vers le haut, constituée par une tôle métallique, par exemple en aluminium ou en acier, en forme de coque, de cylindre creux ou analogue, au bord supérieur de laquelle il est prévu un bord de scellement circonférentiel, réalisé d'une seule pièce avec la partie inférieure, dont la face de scellement tournée vers le haut s'étend sensiblement parallèlement à la face du fond de la partie inférieure, un revêtement interne anti-corrosion recouvrant entièrement la surface intérieure de la partie inférieure ainsi que la surface de scellement de cette partie, ledit revêtement empêchant une mise en contact du contenu de l'emballage avec la feuille métallique de la partie inférieure, ainsi qu'une feuille de scellement constituée par une feuille de métal, papier ou analogue, qui est munie, sur son revers faisant face à la partie inférieure, d'un revêtement de feuille de scellement, le choix du matériau du revêtement interne et du revêtement de la feuille de scellement s'effectuant avec utilisation d'un composant renfermant une matière plastique et un vernis de scellement, tel que polypropylène, polyéthylène, polyéthylène téréphtalate ou polycarbonate ou un vernis de scellement compatible avec ladite matière plastique, de telle façon qu'en pressant la feuille de scellement sur le bord de scellement, dans un dispositif à sceller ou analogue, avec application de pression et de chaleur, on obtienne, entre ladite feuille et la partie inférieure, une liaison scellée, stérilisable, sensiblement étanche aux gaz et à l'humidité, caractérisé en ce que le revêtement interne de la partie inférieure est constitué par une couche de vernis de scellement et en ce que le revêtement de la feuille de scellement (16) est constitué par une feuille de matière plastique.Blister packaging, intended in particular to receive food rations requiring sterilization, for example food for domestic animals or the like, comprising a lower part open upwards, consisting of a metal sheet, for example of aluminum or steel, shaped shell, hollow cylinder or the like, at the upper edge of which a circumferential sealing edge is provided, made in one piece with the lower part, the sealing face facing upwards extending substantially parallel to the face of the bottom of the lower part, an internal anti-corrosion coating entirely covering the inner surface of the lower part as well as the sealing surface of this part, said coating preventing the contents of the packaging from coming into contact with the metal foil of the lower part, as well as a sealing sheet constituted by a sheet of metal, paper or the like, which is provided, s on its underside facing the lower part, with a coating of sealing sheet, the choice of the material of the internal coating and of the coating of the sealing sheet being effected with the use of a component containing a plastic material and a varnish sealing, such as polypropylene, polyethylene, polyethylene terephthalate or polycarbonate or a sealing varnish compatible with said plastic material, so that by pressing the sealing sheet on the sealing edge, in a sealing device or the like, with application of pressure and heat, there is obtained between said sheet and the lower part, a sealed connection, sterilizable, substantially impermeable to gases and to humidity, characterized in that the internal coating of the lower part consists of a layer sealing varnish and in that the coating of the sealing sheet (16) consists of a plastic sheet.

Description

B e s c h r e i b u n g Description
SchalenpackungBowl pack
Die Erfindung betrifft eine Schalenpackung, insbesondere zum Aufnehmen von sterilisationsbedürftigen Nahrungsmittel¬ portionen, wie Tierfutter oder dergleichen, mit einem oben offenen Unterteil aus Metallblech, wie Aluminium oder Stahl, in Form einer Schale, eines Hohlzylinders oder dergleichen, an dessen Oberkante ein umlaufender, einstückig mit dem Unterteil ausgebildeter Siegelrand vorgesehen ist, dessen nach oben weisende umlaufende Siegelfläche im wesentlichen parallel zur Bodenfläche des Unterteiles verläuft, einer die Innenfläche des Unterteiles sowie die Siegelfläche desselben abdeckende durchgehende Innenbeschichtung als Korrosions¬ schutz, die ein In-Kontakt-Kommen des Packungsinhaltes mit dem Metallblech des Unterteiles verhindert, und einer Siegelfolie aus Metallfolie, Papier oder dergleichen, die an ihrer dem Unterteil zugewandten Unterseite mit einer Siegel¬ folienbeschichtung versehen ist, wobei die Materialauswahl der Innenbeschichtung und der Siegelfolienbeschichtung unter Verwendung einer Kunststoff- und einer Siegellackkomponente, wie Polypropylen, Polyethylen, Polyethylenterephthalat oder Polycarbonat bzw. eines hiermit kompatiblen Siegellackes, so getroffen ist, daß sich beim Andrücken der Siegelfolie auf den Siegelrand in einem Siegelwerkzeug oder dergleichen unter Anwendung von Druck und Wärme eine im wesentlichen gas- und feuchtigkeitsdichte sterilisierfähige Siegelver¬ bindung zwischen der Siegelfolie und dem Unterteil ergibt.The invention relates to a bowl pack, in particular for holding portions of food in need of sterilization, such as animal feed or the like, with an open bottom part made of sheet metal, such as aluminum or steel, in the form of a bowl, a hollow cylinder or the like, on the upper edge of which a one-piece piece is provided with the lower part formed sealing edge, the upward-facing circumferential sealing surface runs substantially parallel to the bottom surface of the lower part, one the inner surface of the lower part and the sealing surface thereof covering, continuous inner coating as corrosion protection, which prevents the contents of the pack from coming into contact with the metal sheet of the lower part, and a sealing film made of metal foil, paper or the like, which is provided on its underside facing the lower part with a sealing film coating, wherein The material selection of the inner coating and the sealing film coating using a plastic and a sealing wax component, such as polypropylene, polyethylene, polyethylene terephthalate or polycarbonate or a sealing wax compatible with this, is made such that when the sealing film is pressed onto the sealing edge in a sealing tool or the like Application of pressure and heat results in an essentially gas- and moisture-tight sterilizable seal connection between the sealing film and the lower part.
Derartige Schalenpackungen, z. B. für Kleinportionen von Tierfutter für die Hunde- oder Katzenhaltung, sind bekannt. Das Unterteil besteht dabei in der Regel aus einer tiefge¬ zogenen Aluminiumschale, während die Siegelfolie beispiels¬ weise aus einer sehr dünnen Aluminiumfolie bestehen kann. Aus Korrosionsschutzgründen ist das Unterteil innen mit einem Kunststoffil oder einer Kunststoffolie der eingangs beschriebenen Art beschichtet, wodurch verhindert wird, daß der Packungsinhalt unmittelbar mit dem korrosionεempfind- lichen Metallblech des Unterteiles, bei dem es sich z. B. auch um besonders dünnes Stahlblech handeln kann, in Kontakt kommt. Die Siegelfolienbeschichtung besteht aus einem Siegellack, der flächig auf die Siegelfolie aufgebracht ist und gewährleistet, daß die Siegelfolie durch Andrücken auf den Siegelrand des Unterteiles unter Anwendung entsprechen¬ den Druckes und entsprechender Wärme mit dem Unterteil gas- und flüssigkeitsdicht versiegelt wird.Such shell packs, e.g. B. for small portions of animal feed for dog or cat husbandry are known. The lower part generally consists of a deep-drawn aluminum shell, while the sealing film can consist, for example, of a very thin aluminum film. For reasons of corrosion protection, the lower part is coated on the inside with a plastic film or a plastic film of the type described at the outset, which prevents the contents of the package from directly contacting the corrosion-sensitive metal sheet of the lower part, which is, for. B. can also be a particularly thin steel sheet comes into contact. The sealing film coating consists of a sealing varnish which is applied to the sealing film over the entire area and ensures that the sealing film is sealed gas-tight and liquid-tight to the lower part by pressing the sealing edge of the lower part using the appropriate pressure and heat.
Schalenpackungen dieser Art haben sich durchaus bewährt. Als ungünstig hat es sich allerdings herausgestellt, daß die Materialauswahl für die Siegelfolie noch nicht befriedigend gelöst werden konnte. Dies liegt darin, daß die Siegelfolie, die an ihrer dem Unterteil zugewandten Seite bei den her¬ kömmlichen Schalenpackungen mit einer sehr dünnen Siegel¬ lackschicht bedeckt ist, die ihrerseits keine mechanischen Belastungen in der Folienebene aufnehmen kann, sowohl verhältnismäßig reißfest als auch biegsam und rollfähig ausgebildet sein muß. Hierdurch ist die Materialauswahl¬ möglichkeit beschränkt, da weder besonders dünne z. B. Aluminiumfolien verwendet werden können, die ansonsten z. B. bei einer Stoßbeanspruchung der Siegelfolie auf dem Trans¬ port oder auch an der Verkaufsstätte leicht zerreißen könnten, noch überhaupt verhältnismäßig kostengünstige ' Materialien, wie z. B. Papier oder dergleichen, verwendet werden können.Tray packs of this type have proven their worth. As However, it turned out to be unfavorable that the choice of material for the sealing film could not yet be satisfactorily resolved. This is because the sealing film, which is covered on its side facing the lower part in the conventional shell packs with a very thin sealing lacquer layer, which in turn cannot absorb mechanical loads in the film plane, is both relatively tear-resistant as well as flexible and rollable must be trained. This limits the choice of material, since neither particularly thin z. B. aluminum foils can be used, which otherwise z. B. could easily tear when the sealing film is subjected to an impact on the transport or also at the point of sale, still relatively inexpensive materials, such as. B. paper or the like can be used.
Der Erfindung liegt die Aufgabe zugrunde, die Schalenpackung der gattungsgemäßen Art dahingehend weiterzubilden, daß unter Beibehaltung der Sterilisationsfähigkeit eine größere Flexibilität hinsichtlich der Materialauswahl für die Siegelfolie erreicht wird, wobei die Schalenpackung stabil und im Gebrauch verläßlich sein soll.The invention has for its object to develop the tray pack of the generic type in such a way that greater flexibility with regard to the choice of material for the sealing film is achieved while maintaining the sterilization ability, the tray pack should be stable and reliable in use.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Innenbeschichtung des Unterteiles aus einer Siegellack¬ schicht und die Siegelfolienbeschichtung aus einer Kunst¬ stoffolie besteht.According to the invention, this object is achieved in that the inner coating of the lower part consists of a sealing lacquer layer and the sealing film coating consists of a plastic film.
Dabei kann vorgesehen sein, daß die Siegelfolienbeschichtung als Schmelz- oder Lösungsfilm auf die Innenfläche und den Siegelrand des Unterteiles aufgebracht ist.It can be provided that the sealing film coating is applied as a melt or solution film on the inner surface and the sealing edge of the lower part.
Auch kann erfindungsgemäß vorgesehen sein, daß die Siegel¬ folienbeschichtung aus ein- oder ehrachsig (hoch-) ver- strecktem Kunststoffmaterial besteht.It can also be provided according to the invention that the sealing film coating consists of single- or multi-axis (high) stretched plastic material.
Der Erfindung liegt die überraschende Erkenntnis zugrunde, daß es gelingt, die gestellte Aufgabe dadurch zu lösen, daß die Kunststoffolie, die beim Stand der Technik als Korrosionsbeschichtung für das Unterteil verwendet wird und hier lediglich ihre Korrosionsschutzeigenschaften "aus¬ spielen" kann, ohne daß von der zusätzlichen inhärenten Eigenschaft von Kunststoffolien, nämlich ihrer Zähigkeit und hohen mechanischen Beständigkeit, Gebrauch gemacht würde, an eine funktionsgerechtere Stelle verlagert wird, nämlich in ihrer Ausbildung als Siegelfolienbeschichtung, während der Siegellack, der bislang, nämlich beim Stand der Technik, an der Siegelfolie vorgesehen war, als Innenschutzbeschichtung für das Unterteil verwendet wird.The invention is based on the surprising finding that it is possible to achieve the object in that the plastic film which is used as a corrosion coating for the lower part in the prior art and can only "play" its anti-corrosion properties here without the additional inherent property of plastic films, namely their toughness and high mechanical resistance, would be relocated to a more functional place, namely in their training as a sealing film coating, while the sealing wax, which was previously provided on the sealing film, namely in the prior art was used as an internal protective coating for the lower part.
Der Siegellack, der nicht in der Lage ist, mechanische Funktionen zu übernehmen, dient somit bei der Erfindung als Innenbeschichtung für das Unterteil zwei Zwecken, nämlich einerseits dazu, einen zuverlässigen Korrosionsschutz des Unterteiles zu gewährleisten, ferner aber auch, wie beim Stand der Technik, in Verbindung mit der Kunststoffolie eine zuverlässige Siegelung zu ermöglichen, während die Kunststoffolie ihre bei den herkömmlichen Schalenpackungen ungenutzten Eigenschaften, nämlich Zähigkeit und hohe mechanische Querfes igkeit, als Siegelfolienbeschichtung zur Geltung bringt. Da somit das eigentliche Siegelfolienmaterial zum größten Teil von den Aufgaben mechanischer Zähigkeit und Querfestigkeit entlastet ist, kann man das Siegelfolienmaterial, beispielsweise also das verwendete Aluminium- oder Stahlblech, wesentlich dünner ausbilden als bei herkömmlichen Schalenpackungen, mit allen hiermit verbundenen Kostenvorteilen. Auch lassen sich Materialien verwenden, die bislang nicht eingesetzt werden konnten, wie z. B. Papier oder dergleichen, d. h. Materialien mit nur geringer mechanischer Festigkeit.The sealing wax, which is not able to take over mechanical functions, thus serves two purposes in the invention as an inner coating for the lower part, namely on the one hand to ensure reliable corrosion protection of the lower part, but also also, as in the prior art, to enable a reliable seal in connection with the plastic film, while the plastic film brings out its properties, namely toughness and high mechanical transverse strength, which are not used in the conventional shell packs, as a sealing film coating. Since the actual sealing film material is largely relieved of the tasks of mechanical toughness and transverse strength, the sealing film material, for example the aluminum or steel sheet used, can be made much thinner than with conventional shell packs, with all the associated cost advantages. Materials can also be used that could not previously be used, such as. B. paper or the like, ie Materials with low mechanical strength.
Insgesamt gelingt es hierdurch, eine wesentlich kosten¬ günstigere Schalenpackung als bisher zu schaffen, die darüber hinaus über verbesserte Festigkeitseigenscha ten hinsichtlich der Siegelfolie verfügt.All in all, this makes it possible to create a shell pack that is considerably less expensive than previously, and which also has improved strength properties with regard to the sealing film.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der ein Ausführungsbei- spiel anhand der schematischen Zeichnung im einzelnen er¬ läutert ist.Further features and advantages of the invention result from the following description, in which an exemplary embodiment is explained in detail on the basis of the schematic drawing.
Die aus einer einzigen Figur bestehende Zeichnung zeigt dabei eine Schalenpackung nach der Erfindung im vertikalen Schnitt durch die Längsachse.The drawing consisting of a single figure shows a shell pack according to the invention in a vertical section through the longitudinal axis.
Wie die Zeichnung erkennen läßt, weist die Schalenpackung nach der Erfindung bei dem dort gezeigten Ausführungsbei- spiel ein Unterteil 10 auf, welches hier aus Stahlblech mit einer Dicke von 0,1 mm besteht und im Tie ziehverfahren hergestellt ist. Das Unterteil 10 ist an seiner Innenfläche, unter Einschluß eines im wesentlichen parallel zu seiner Bodenfläche verlaufenden Siegelrandes, mit einer Innenbe¬ schichtung 12 aus Siegellack beschichtet, die so dick aus¬ gebildet ist, daß sowohl das Stahlblech des Unterteiles 10 gegen Korrosion geschützt als auch eine zuverlässige Siegelung ermöglicht wird. Eine Siegelfolie 14, aus sehr dünner Aluminiumfolie bestehend, ist an ihrer Unterseite mit einer Siegelfolienbeschichtung 16 in Form einer Poly¬ propylenfolie versehen. Mittels eines Siegelwerkzeuges läßt sich die Siegelfolie 14 mit dem Unterteil 10 durch Anwendung von Druck und Wärme entlang des Siegelrandes gas- und flüssigkeitsdicht in bekannter Weise verbinden, wobei durch geeignete Auswahl des Siegellackes für die Innenbeschichtung 12 und des Materials für die Siegelfolienbeschichtung 16 dafür gesorgt werden kann, daß die gefüllte und ver¬ schlossene Packung sterilisationsfähig ist.As can be seen in the drawing, the shell pack according to the invention in the exemplary embodiment shown there has a lower part 10, which here consists of sheet steel with a thickness of 0.1 mm and is produced using the drawing method. The lower part 10 is coated on its inner surface, including a sealing edge running essentially parallel to its bottom surface, with an inner coating 12 made of sealing wax, which is so thick that both the steel sheet of the lower part 10 is protected against corrosion and also reliable sealing is made possible. A sealing foil 14, consisting of very thin aluminum foil, is provided on its underside with a sealing foil coating 16 in the form of a polypropylene foil. By means of a sealing tool, the sealing film 14 can be connected to the lower part 10 in a known manner in a gas-tight and liquid-tight manner by applying pressure and heat along the sealing edge, with suitable selection of the sealing wax for the inner coating 12 and the material for the sealing film coating 16 it can be ensured that the filled and sealed package can be sterilized.
Natürlich läßt sich der Erfindungsgedanke, das korrosions¬ empfindliche Unterteil mit einer gleichzeitig als Korrosionsschicht dienenden Innenbeschichtung aus Siegellack zu versehen, eine das Unterteil abdeckende Siegelfolie 14 hingegen mit einer mechanisch belastbaren, mit dem Siegel¬ lack der Innenbeschichtung 12 des Unterteiles 10 kompatiblen Siegelfolienbeschichtung in Form einer mechanisch belast¬ baren Kunststoffolie auszustatten, nicht nur bei Schalen¬ packungen der oben beschriebenen Art verwenden, sondern z. B. auch bei konservenbüchsenähnlichen Behältnissen und dergleiche .Of course, the idea of the invention can be provided to provide the corrosion-sensitive lower part with an inner coating of sealing wax which also serves as a corrosion layer, while a sealing film 14 covering the lower part can be provided with a mechanically resilient sealing film coating in the form that is compatible with the sealing lacquer of the inner coating 12 of the lower part 10 to equip a mechanically resilient plastic film, not only to use in the case of tray packs of the type described above, but e.g. B. also with canning-like containers and the like.
Die in der vorstehenden Beschreibung, in der Zeichnung sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Aus¬ führungsformen wesentlich sein. The features of the invention disclosed in the above description, in the drawing and in the claims can be essential both individually and in any combination for the implementation of the invention in its various embodiments.

Claims

A n s p r ü c h e Expectations
1. Schalenpackung, insbesondere zum Aufnehmen von sterili¬ sationsbedürftigen Nahrungsmittelportionen, wie Tierfutter oder dergleichen, mit einem oben offenen Unterteil aus Metallblech, wie Aluminium oder Stahl, in Form einer Schale, eines Hohlzylinders oder dergleichen, an dessen Oberkante ein umlaufender, einstückig mit dem Unterteil ausgebildeter Siegelrand vorgesehen ist, dessen nach oben weisende um¬ laufende Siegelfläche im wesentlichen parallel zur Boden¬ fläche des Unterteiles verläuft, einer die Innenfläche des Unterteiles sowie die Siegelfläche desselben abdeckende durchgehende Innenbeschichtung als Korrosionsschutz, die ein In-Kontakt-Kom en des Packungsinhaltes mit dem Metallblech des Unterteiles verhindert, und einer Siegelfolie aus Metallfolie, Papier oder dergleichen, die an ihrer dem Unterteil zugewandten Unterseite mit einer Siegelfolienbe¬ schichtung versehen ist, wobei die Materialauswahl der Innenbeschichtung und der Siegelfolienbeschichtung unter Verwendung einer Kunststoff- und einer Siegellackkomponente, wie Polypropylen, Polyethylen, Polyethylenterephthalat oder Polycarbonat bzw. eines hiermit kompatiblen Siegellackes/ so getroffen ist, daß sich beim Andrücken der Siegelfolie auf den Siegelrand in einem Siegelwerkzeug oder dergleichen unter Anwendung von Druck und Wärme eine im wesentlichen gas- und feuchtigkeitsdichte sterilisierfähige Siegelver¬ bindung zwischen der Siegelfolie und dem Unterteil ergibt, dadurch gekennzeichnet, daß die Innenbeschichtung (12) des Unterteiles (10) aus einer Siegellackschicht und die Siegelfolienbeschichtung (16) aus einer Kunststoffolie be¬ steht.1. Tray pack, in particular for holding portions of food in need of sterilization, such as animal feed or the like, with an open bottom part made of sheet metal, such as aluminum or steel, in the form of a tray, a hollow cylinder or the like, on the upper edge of which a circumferential one piece with the Provided lower part formed sealing edge, the upward-facing circumferential sealing surface runs substantially parallel to the bottom surface of the lower part, one covering the inner surface of the lower part and the sealing surface thereof continuous inner coating as corrosion protection, which prevents the contents of the pack from coming into contact with the metal sheet of the lower part, and a sealing film made of metal foil, paper or the like, which is provided on its underside facing the lower part with a sealing film coating, the choice of material the inner coating and the sealing film coating using a plastic and a sealing wax component, such as polypropylene, polyethylene, polyethylene terephthalate or polycarbonate or a sealing wax compatible therewith / is made such that when the sealing film is pressed onto the sealing edge in a sealing tool or the like using Pressure and heat results in an essentially gas- and moisture-proof sterilizable seal connection between the sealing film and the lower part, characterized in that the inner coating (12) of the lower part (10) consists of a sealing lacquer layer and the sealing film ien coating (16) consists of a plastic film.
2. Schalenpackung nach Anspruch 1, dadurch gekennzeichnet, daß die Siegelfolienbeschichtung (1/5) als Schmelz- oder Lösungsfilm auf die Innenfläche und den Siegelrand des Unterteiles (10) aufgebracht ist.2. Tray pack according to claim 1, characterized in that the sealing film coating (1/5) is applied as a melt or solution film on the inner surface and the sealing edge of the lower part (10).
3. Schalenpackung nach Anspruch 1, dadurch gekennzeichnet, daß die Siegelfolienbeschichtung (16) aus ein- oder mehr- achsig (hoch-) verstrecktem Kunststoffmaterial besteht. 3. Tray pack according to claim 1, characterized in that the sealing film coating (16) consists of single or multi-axis (highly) stretched plastic material.
EP91916452A 1990-09-25 1991-09-13 Bowl package Withdrawn EP0500891A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4030646 1990-09-25
DE4030646A DE4030646A1 (en) 1990-09-25 1990-09-25 BOWL PACK

Publications (1)

Publication Number Publication Date
EP0500891A1 true EP0500891A1 (en) 1992-09-02

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EP (1) EP0500891A1 (en)
JP (1) JPH05502427A (en)
AU (1) AU8531291A (en)
BR (1) BR9106176A (en)
CA (1) CA2069418A1 (en)
DE (1) DE4030646A1 (en)
HU (1) HU9201720D0 (en)
WO (1) WO1992005088A1 (en)

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ES2619427T3 (en) 2012-10-30 2017-06-26 Hydro Aluminium Rolled Products Gmbh Coated aluminum band and manufacturing method
JP2021031169A (en) * 2019-08-29 2021-03-01 サカタインクス株式会社 Packaging material
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Publication number Publication date
HU9201720D0 (en) 1992-08-28
CA2069418A1 (en) 1992-03-26
WO1992005088A1 (en) 1992-04-02
JPH05502427A (en) 1993-04-28
BR9106176A (en) 1993-03-16
DE4030646A1 (en) 1992-04-02
AU8531291A (en) 1992-04-15

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