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EP0878409A1 - Tin can with a foil closure membrane and a snap-on cap - Google Patents

Tin can with a foil closure membrane and a snap-on cap Download PDF

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Publication number
EP0878409A1
EP0878409A1 EP98108012A EP98108012A EP0878409A1 EP 0878409 A1 EP0878409 A1 EP 0878409A1 EP 98108012 A EP98108012 A EP 98108012A EP 98108012 A EP98108012 A EP 98108012A EP 0878409 A1 EP0878409 A1 EP 0878409A1
Authority
EP
European Patent Office
Prior art keywords
area
membrane
jacket
slip lid
bead
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.)
Granted
Application number
EP98108012A
Other languages
German (de)
French (fr)
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EP0878409B1 (en
Inventor
Werner Grabher
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Individual
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Individual
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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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0018—Upper closure of the 43-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane

Definitions

  • the invention relates to a can according to the preamble of claim 1.
  • the tightly closable closure arrangement comprises a closure membrane and a slip lid.
  • the sealing membrane closes the can jacket in one Tightly from the end area and may consist of (especially with thin aluminum foil laminated) paper and / or plastic, but preferably a metal foil, especially made of aluminum, all of the following for the sake of simplicity only as Called membrane or film. If necessary, the membrane or film is in itself known way removable with the aid of tear tabs.
  • the slip lid edge at least on the outside, but possibly also outside and inside, extending over the edge of the can.
  • the collar-shaped edge of the sealing membrane is pulled up in the direction of the can axis, the end surface of the film is inside the can and the collar-shaped Edge from the end surface against or to the front edge of the can extends.
  • the membrane collar is usually cylindrical and with a corresponding cylindrical end region of the inside of the can jacket is firmly connected, or glued or sealed.
  • the - preferably flanged - can edge from The membrane collar is wrapped around or free. If the collar is not over the edge of the can extends, this makes it easier to attach and tear open the film.
  • WO96 / 31406 describes cans, in particular tin cans, with a membrane film and known with a slip lid.
  • the membrane films described therein are at most 0.2 mm thick and e.g. from a 50 ⁇ aluminum foil with 20 ⁇ heat seal coating on the inside and 10-20 ⁇ lubricating lacquer coating on the outside.
  • the can base is also formed with a film and, in particular, a slip bottom be.
  • the membrane film - at least in that for the Connection with the inner wall of the can specific area - with a heat seal lacquer is coated.
  • the inner wall of the can can also be mentioned in the above Area - as well as that of (e.g. coated with aluminum foil) combination cans - be provided with a primer or a heat sealable layer; otherwise required the tight connection often requires the use of special - especially multi-component - adhesives or heat seal lacquers. In any case, it can also be bare or lacquered tin cans are sealed.
  • CH 467 202 describes a can with a sealing membrane made of flat material consists of the same thickness as the can jacket and from which only one of a weakened line, the middle section is removable.
  • the problem with the at least partially removable closure membrane is that this must be removable with a relatively small effort. Therefore can push the contents against the sealing membrane to break open or at least to leaks in the connection area or in the area of the weakening line, the sealing membrane. Content hits the membrane occur, for example, during transport.
  • the can lid When the can lid is facing down acts on the membrane, in addition to the impact forces, the weight of the contents of the can.
  • Most of the cans come with an inserted membrane and a slip lid filled through the still open can bottom.
  • the incoming filling material strikes on the membrane, the force acting on the membrane directly from the Density and the feed rate of the product depends. With quick filling and / or heavy filling material leakage occurs when the cans are filled too large on. With cans with easily removable membranes, this can also be the case with air transport or negative pressure occurring during transport in mountain regions to loosen the membrane to lead. Even if the force only leads to an irreversible deformation, so this may be undesirable in special applications.
  • the object of the invention is now a closure arrangement with easily removable Closure elements, i.e. in particular with a sealing membrane and to create a slip lid, so that the cans are possible even on the Membrane acting forces, such as when filling quickly, especially with heavy contents, and remain tight during transport.
  • the characterizing features of claim 1 provided.
  • the cans according to the invention can therefore be larger Speed and filled with high density goods without precautions transported and also exposed to relatively large negative pressures.
  • the membrane preferably comprises an expansion area between two contact areas.
  • the expansion area is bead-like or bead-like, and runs along a closed line, preferably circular, if necessary but also elliptical around the can axis.
  • the expansion area allows a deformation associated with a change in volume in the closed can area the sealing membrane, in particular an enlargement or reduction the bead in the expansion area.
  • the type of pressure-related deformation of the sealing membrane depends not only on the Design and material of the membrane, but also from or from the support area (s) of the slip lid.
  • the slip lid can be made of plastic or cardboard be. Preferred embodiments ensure an elastic or reversible Deformation also for large volume changes, so that the can even after it has been exposed to negative pressure, does not look bloated. If necessary, it is advisable if the cavity between the membrane and the lid has a small Compensating opening is connected to the environment, so that membrane movements not transferred to the lid.
  • a groove is provided in the body of the lid, which in the desired position a ring, especially the outward flanging, records. It goes without saying that any other stuck connections can be provided between the lid and the can jacket.
  • a can 1 comprises a jacket 2, which is arranged around the can axis 3 is.
  • the box 1 is closed at one end of the jacket 2 with a bottom 4.
  • the bottom 4 is sealed with the jacket 2 in any known manner connected.
  • the edge area of the sealing membrane 5 is shaped as a collar 6, the cylindrical region of which has the inner surface of the jacket 2 is tightly connected, in particular heat-sealed.
  • the sealing membrane 5 comprises at least one contact area projecting towards the end face 7a, 7b, 17, the with the slip lid 9 attached to a corresponding support area 12a, 12b of the inside of the cover can be put on.
  • a first contact area 7a is bead-like along a closed line, preferably circular, but possibly also elliptical, formed around the can axis 3.
  • a second contact area 7b is the central one Area of the closure membrane 5 is formed. Both contact areas 7a, 7b are up to to a contact plane 8 against an annular end surface 12a of the can jacket 2 before.
  • a slip lid 9 is on the front side of the can jacket closed with the membrane 5 2 removable attachments.
  • the lid 9 comprises a lid surface 10 which closes the can opening, and a cover collar 11, which the can jacket 2 on Encloses end area outside.
  • a support area 12b is provided in which the inside of the lid surface in the area the contact plane 8 runs and thus at least to a contact area 7a, 7b Connects membrane surface 5.
  • a first and a second support region 12a and 12b protruding against the interior of the can.
  • the first and second support areas 12a and 12b are the first and second, respectively Contact area 7a and 7b assigned and extends accordingly the can axis 3.
  • the first support region 12a thus runs inside the can bead-like along a closed line, preferably circular, but optionally also elliptical.
  • the second support area 12b is the central area of the cover surface somewhat drawn into the interior of the can.
  • a groove 13 for receiving the annular projection 14 formed by the flanging of the jacket end serves.
  • the lid surface 10 lies in the areas that are not as Support areas 12a, 12b are formed, essentially in the end plane of the can jacket 2.
  • a protruding upward from the lid surface 10 Ring 15 fits into a recess area of the can base 4, so that the cans 2 are stackable.
  • the recess area of the bottom 4 lies in the interior of the annular Flare connection 16 between can bottom 4 and can jacket 2.
  • the membrane comprises an expansion region 17, preferably between two contact areas 7a, 7b.
  • the expansion areas 7b and 17 are bead-like or bead-like and run along a closed line, preferably circular, possibly elliptical, around the can axis 3.
  • the area of expansion 17 enables a volume change in the closed can area Deformation of the sealing membrane 5, in particular an enlargement or Reduction of the bead in the expansion area 17.
  • the invention is not restricted to the illustrated embodiment. It understands self-evident that the most diverse arrangements of each other Contact and / or support areas are possible. Instead of closed lines and / or surfaces can also radial or any combination of courses, in particular interrupted or section-wise arrangements can also be provided with the same function. It is also possible that the contact or support areas do not have the same shape, but instead for example, are designed to run transversely to one another, preferably it is guaranteed that the support and / or the deformation behavior in all twist positions between membrane 5 and cover 9 is substantially the same. Possibly the contact plane 8 is essentially at the front end of the can jacket 2 so that the support areas do not have to protrude inwards. The inside of the Rather, the lid surface 10 can be flat and the support areas are Subareas of the lid surface 10 facing the contact areas 7a, 7b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Closing Of Containers (AREA)
  • Packages (AREA)

Abstract

The membrane surface (5) has at least one contact area (a,b) projecting towards the end side of the can sleeve (2). This ensures that when the lid (9) is inverted and is fitted on the top of the can, the contact area fits at least in part against a supporting area (12,12b) of the inside of the inverted lid face (10). At least a first contact area (7a) runs bead-like along a closed line circular or elliptical round the can axis (3). The second contact area can be a central area of the membrane face. An expansion area (17) can be provided between two contact areas to allow deformation of the closure membrane when there is a change in volume in the closed can area.

Description

Die Erfindung bezieht sich auf eine Dose nach dem Oberbegriff des Anspruches 1.The invention relates to a can according to the preamble of claim 1.

Dosen mit einem um die Dosenachse verlaufenden Dosenmantel, einem Dosenboden und einer, an dem dem Dosenboden gegenüberliedenden Ende angeordneten, Verschlussanordnung werden zum Aufnehmen der verschiedenartigsten Produkte engesetzt. Die dicht verschliessbare Verschlussanordnung umfasst eine Verschlussmembran und einen Stülpdeckel. Die Verschlussmembran schliesst den Dosenmantel im einen Endbereich dicht ab und besteht gegebenenfalls aus (insbesondere mit dünner Aluminiumfolie kaschiertem) Papier und/oder Kunststoff, vorzugsweise jedoch einer Metallfolie, insbesondere aus Aluminium, alles im folgenden der Einfachheit halber auch nur als Membran oder Folie bezeichnet. Gegebenenfalls ist die Membran bzw. Folie in an sich bekannter Weise mit Hilfe von Aufreisslaschen entfernbar. Zum Schützen der verletzlichen Folie und zum Verschliessen der Dose nach dem Entfernen der Folie werden Stülpdeckel auf die Dose aufgesetzt, wobei sich der Stülpdeckelrand zumindest aussen, gegebenenfalls aber auch aussen und innen, über den Dosenrand erstreckt.Cans with a can jacket running around the can axis, a can bottom and a closure assembly located at the end opposite the can bottom are used to hold a wide variety of products. The tightly closable closure arrangement comprises a closure membrane and a slip lid. The sealing membrane closes the can jacket in one Tightly from the end area and may consist of (especially with thin aluminum foil laminated) paper and / or plastic, but preferably a metal foil, especially made of aluminum, all of the following for the sake of simplicity only as Called membrane or film. If necessary, the membrane or film is in itself known way removable with the aid of tear tabs. To protect the vulnerable Foil and to close the can after removing the foil Slip lid placed on the can, the slip lid edge at least on the outside, but possibly also outside and inside, extending over the edge of the can.

Der kragenförmige Rand der Verschlussmembran ist in Richtung der Dosenachse hochgezogen, wobei die Abschlussfläche der Folie im Doseninneren liegt und sich der kragenförmige Rand von der Abschlussfläche gegen den bzw. zum stirnseitigen Dosenrand erstreckt. Der Membrankragen ist meist zylindrisch ausgebildet und mit einem entsprechenden zylindrischen Endbereich der Innenseite des Dosenmantels fest verbunden, bzw. verleimt oder versiegelt. Der - vorzugsweise umgebördelte - Dosenrand kann vom Membrankragen umgriffen oder frei sein. Wenn sich der Kragen nicht über den Dosenrand erstreckt, so erleichtert dies das Anbringen und Aufreissen der Folie.The collar-shaped edge of the sealing membrane is pulled up in the direction of the can axis, the end surface of the film is inside the can and the collar-shaped Edge from the end surface against or to the front edge of the can extends. The membrane collar is usually cylindrical and with a corresponding cylindrical end region of the inside of the can jacket is firmly connected, or glued or sealed. The - preferably flanged - can edge from The membrane collar is wrapped around or free. If the collar is not over the edge of the can extends, this makes it easier to attach and tear open the film.

Aus der WO96/31406 sind Dosen, insbesondere Blechdosen, mit einer Membranfolie und mit einem Überstülpdeckel bekannt. Die darin beschriebenen Membranfolien sind höchstens 0.2 mm stark und bestehen z.B. aus einer 50µ Aluminiumfolie mit 20µ Heißsiegelbeschichtung auf der Innenseite und 10-20µ Gleitlackbeschichtung auf der Aussenseite. In Abhängigkeit vom Füllgut oder von einem eingesetzten Deckel kann bei Bedarf auch der Dosenboden mit einer Folie und insbesondere einem Stülpboden ausgebildet sein.WO96 / 31406 describes cans, in particular tin cans, with a membrane film and known with a slip lid. The membrane films described therein are at most 0.2 mm thick and e.g. from a 50µ aluminum foil with 20µ heat seal coating on the inside and 10-20µ lubricating lacquer coating on the outside. Depending on the contents or on a lid used, If necessary, the can base is also formed with a film and, in particular, a slip bottom be.

Im allgemeinen ist es bevorzugt, wenn die Membranfolie - zumindest in dem für die Verbindung mit der Innenwand der Dose bestimmten Bereich - mit einem Heißsiegellack beschichtet ist. Grundsätzlich kann aber auch die Innenwand der Dose in dem erwähnten Bereich - sowie diejenige von (z.B. mit Aluminiumfolie beschichteten) Kombidosen - mit einem Primer oder einer heißsiegelfähigen Schicht versehen sein; ansonsten erfordert die dichte Verbindung häufig den Einsatz spezieller - insbesondere mehrkomponentiger - Klebstoffe oder Heißsiegellacke. Jedenfalls können damit auch blanke oder lackierte Blechdosen dichtend verschlossen werden.In general, it is preferred if the membrane film - at least in that for the Connection with the inner wall of the can specific area - with a heat seal lacquer is coated. Basically, however, the inner wall of the can can also be mentioned in the above Area - as well as that of (e.g. coated with aluminum foil) combination cans - be provided with a primer or a heat sealable layer; otherwise required the tight connection often requires the use of special - especially multi-component - adhesives or heat seal lacquers. In any case, it can also be bare or lacquered tin cans are sealed.

Die CH 467 202 beschreibt eine Dose mit einer Verschlussmembran, die aus Flachmaterial besteht, die gleiche Dicke hat wie der Dosenmantel und aus der lediglich eine, von einer Schwächungslinie umgebene, Mittelpartie entfernbar ist.CH 467 202 describes a can with a sealing membrane made of flat material consists of the same thickness as the can jacket and from which only one of a weakened line, the middle section is removable.

Das Problem der zumindest teilweise entfernbaren Verschlussmembran besteht darin, dass diese mit einem verhältnismässig kleinen Kraftaufwand entfernbar sein muss. Daher können Stösse des Inhaltes gegen die Verschlussmembrane zum Aufbrechen oder zumindest zu undichten Stellen im Verbindungsbereich, bzw. im Bereich der Schwächungslinie, der Verschlussmembran führen. Stösse des Inhaltes gegen die Membran treten beispielsweise beim Transport auf. Wenn der Dosendeckel nach unten gerichtet ist, wirkt auf die Membran nebst den Stosskräften auch die Gewichtskraft des Doseninhaltes. Die meisten Dosen werden mit eingesetzter Membran und aufgesetztem Stülpdeckel durch den noch offenen Dosenboden befüllt. Dabei schlägt das eintretende Füllgut auf die Membran auf, wobei die auf die Membran wirkende Kraft direkt von der Dichte und der Zuführgeschwindigkeit des Füllgutes abhängt. Bei schnellem Befüllen und/oder schwerem Füllgut treten bei einem zu grosser Anteil der befüllten Dosen Lecks auf. Bei Dosen mit leicht entfernbaren Membranen kann auch der bei Flugtransporten oder bei Transporten in Bergregionen auftretende Unterdruck zum Lösen der Membrane führen. Selbst wenn die Krafteinwirkung nur zu einer irreversiblen Verformung führt, so kann dies bei besonderen Anwendungen unerwünscht sein.The problem with the at least partially removable closure membrane is that this must be removable with a relatively small effort. Therefore can push the contents against the sealing membrane to break open or at least to leaks in the connection area or in the area of the weakening line, the sealing membrane. Content hits the membrane occur, for example, during transport. When the can lid is facing down acts on the membrane, in addition to the impact forces, the weight of the contents of the can. Most of the cans come with an inserted membrane and a slip lid filled through the still open can bottom. The incoming filling material strikes on the membrane, the force acting on the membrane directly from the Density and the feed rate of the product depends. With quick filling and / or heavy filling material leakage occurs when the cans are filled too large on. With cans with easily removable membranes, this can also be the case with air transport or negative pressure occurring during transport in mountain regions to loosen the membrane to lead. Even if the force only leads to an irreversible deformation, so this may be undesirable in special applications.

Die an sich bekannten Einsteckdeckel beseitigen zwar diese Probleme, sind aber wegen des erforderlichen Griffrings materialaufwendiger und daher teurer als Überstülpdeckel, sodass ein Wunsch nach den letzteren besteht.The known plug-in lids eliminate these problems, but are because of the required grip ring is more expensive and therefore more expensive than the slip-on cover, so there is a desire for the latter.

Die Aufgabe der Erfindung besteht nun darin, eine Verschlussanordnung mit leicht entfernbaren Verschlusselementen, d.h. insbesondere mit einer Verschlussmembran und einem Überstülpdeckel zu schaffen, so dass die Dosen auch bei den möglichen, auf die Membran wirkenden Kräften, wie etwa beim schnellen Befüllen, insbesondere mit schwerem Füllgut, und beim Transport dicht bleiben. The object of the invention is now a closure arrangement with easily removable Closure elements, i.e. in particular with a sealing membrane and to create a slip lid, so that the cans are possible even on the Membrane acting forces, such as when filling quickly, especially with heavy contents, and remain tight during transport.

Zur Lösung der Aufgabe werden zusammen mit den Oberbegriffsmerkmalen auch die kennzeichnenden Merkmale des Anspruches 1 vorgesehen. Indem die auf die Verschlussmembran wirkenden, nach aussen gerichteten Kräfte zumindest in Teil- bzw. Kontaktbereichen durch die Anlegbarkeit derselben an Abstützbereiche der Innenseite des Deckels an den Deckel übertragbar sind, wird die Gefahr von undichten Membranen im wesentlichen beseitigt. Daher können die erfindungsgemässen Dosen mit grosser Geschwindigkeit und mit Gütern hoher Dichte befüllt, ohne Vorsichtsmassnahmen transportiert und auch verhältnismässig grossen Unterdrücken ausgesetzt werden.To solve the task, together with the generic terms, the characterizing features of claim 1 provided. By attaching it to the sealing membrane acting, outward forces at least in part or Contact areas due to the fact that they can be applied to support areas on the inside of the lid can be transferred to the lid, there is a risk of leaky membranes essentially eliminated. The cans according to the invention can therefore be larger Speed and filled with high density goods without precautions transported and also exposed to relatively large negative pressures.

Um zu verhindern, beispielsweise wenn sich die Dose in einer Umgebung mit Unterdruck befindet, dass in der Verschlussmembran und/oder von dieser auf den Stülpdeckel grosse Kräfte wirken, umfasst die Membran einen Ausdehnungsbereich, vorzugsweise zwischen zwei Kontaktbereichen. Der Ausdehnungsbereich ist wulst- bzw. sickenartig, und verlauft entlang einer geschlossenen Linie, vorzugsweise kreis-, gegebenenfalls aber auch ellipsenförmig, um die Dosenachse. Der Ausdehnungsbereich ermöglicht eine mit einer Volumenänderung im abgeschlossenen Dosenbereich verbundene Verformung der Verschlussmembran, insbesondere eine Vergrösserung bzw. Verkleinerung der Wulst im Ausdehnungsbereich. Gegebenenfalls ist auch eine gefederte Bewegung der Membranteilbereiche inner- und ausserhalb des Ausdehnungsbereiches relativ zueinander erzielbar.To prevent, for example, when the can is in an environment with negative pressure located in the sealing membrane and / or from this on the slip lid large forces act, the membrane preferably comprises an expansion area between two contact areas. The expansion area is bead-like or bead-like, and runs along a closed line, preferably circular, if necessary but also elliptical around the can axis. The expansion area allows a deformation associated with a change in volume in the closed can area the sealing membrane, in particular an enlargement or reduction the bead in the expansion area. There may also be a sprung movement the membrane sub-areas inside and outside the expansion area relative to each other achievable.

Die Art der druckbedingten Verformung der Verschlussmembran hängt nicht nur von der Gestaltung und dem Material der Membran, sondern auch vom bzw. von den Abstützbereich(en) des Stülpdeckels ab. Der Stülpdeckel kann aus Kunststoff oder Karton gebildet sein. Bevorzugte Ausführungsformen gewährleisten eine elastische bzw. reversible Verformung auch für grosse Volumenänderungen, so dass die Dose auch nachdem sie einem Unterdruck ausgesetzt war, nicht gebläht aussieht. Gegebenenfalls ist es zweckmässig, wenn der Hohlraum zwischen der Membran und dem Deckel über eine kleine Ausgleichsöffnung mit der Umgebung verbunden ist, so dass sich Membranbewegungen nicht auf den Deckel übertragen. Um dem Deckel in einer definierten Lage einen festen Sitz zu geben, ist im Kargen des Deckels beispielsweise eine Nut vorgesehen, die in der gewünschten Lage einen Ring, insbesondere die nach aussen stehende Umbördelung, aufnimmt. Es versteht sich von selbst, dass beliebige andere festsitzende Verbindungen zwischen Deckel und Dosenmantel vorgesehen werden können.The type of pressure-related deformation of the sealing membrane depends not only on the Design and material of the membrane, but also from or from the support area (s) of the slip lid. The slip lid can be made of plastic or cardboard be. Preferred embodiments ensure an elastic or reversible Deformation also for large volume changes, so that the can even after it has been exposed to negative pressure, does not look bloated. If necessary, it is advisable if the cavity between the membrane and the lid has a small Compensating opening is connected to the environment, so that membrane movements not transferred to the lid. To secure the lid in a defined position To give a seat, for example, a groove is provided in the body of the lid, which in the desired position a ring, especially the outward flanging, records. It goes without saying that any other stuck connections can be provided between the lid and the can jacket.

Weitere Einzelheiten der Erfindung ergeben sich an Hand der nachfolgenden Beschreibung eines dargestellten Ausführungsbeispieles. Es zeigen:

Fig.1
einen achsparallelen Schnitt durch eine Dose mit Verschlussmembran und Stülpdeckel und
Fig.2
eine Draufsicht auf die Dose gemäss Fig. 1.
Further details of the invention will become apparent from the following description of an illustrated embodiment. Show it:
Fig. 1
an axially parallel cut through a can with sealing membrane and slip lid and
Fig. 2
2 shows a plan view of the can according to FIG. 1.

Gemäss Fig.1 umfasst eine Dose 1 einen Mantel 2, der um die Dosenachse 3 angeordnet ist. Die Dose 1 ist an der einen Stirnseite des Mantels 2 mit einem Boden 4 abgeschlossen. Der Boden 4 ist in einer beliebigen bekannten Weise mit dem Mantel 2 dicht verbunden. Im Endbereich der Dose 2, der dem Boden 4 gegenüberliegt, ist eine Verschlussmembran 5 im Doseninnern angeordnet. Der Randbereich der Verschlussmembran 5 ist als Kragen 6 ausgeformt, dessen zylindrischer Bereich mit der Innenfläche des Mantels 2 dicht verbunden, insbesondere heissversiegelt ist. Die Verschlussmembran 5 umfasst mindestens einen gegen die Stirnseite vorstehenden Kontaktbereich 7a,7b, 17, der bei aufgesetztem Stülpdeckel 9 an einen entsprechenden Abstützbereich 12a,12b der Innenseite des Deckels anlegbar ist.According to FIG. 1, a can 1 comprises a jacket 2, which is arranged around the can axis 3 is. The box 1 is closed at one end of the jacket 2 with a bottom 4. The bottom 4 is sealed with the jacket 2 in any known manner connected. In the end area of the can 2, which is opposite the bottom 4, there is a sealing membrane 5 arranged inside the can. The edge area of the sealing membrane 5 is shaped as a collar 6, the cylindrical region of which has the inner surface of the jacket 2 is tightly connected, in particular heat-sealed. The sealing membrane 5 comprises at least one contact area projecting towards the end face 7a, 7b, 17, the with the slip lid 9 attached to a corresponding support area 12a, 12b of the inside of the cover can be put on.

In der dargestellten Ausführungsform ist ein erster Kontaktbereich 7a wulstartig entlang einer geschlossenen Linie, vorzugsweise kreis-, gegebenenfalls aber auch ellipsenförmig, um die Dosenachse 3 ausgebildet. Ein zweiter Kontaktbereich 7b ist als zentraler Bereich der Verschlussmembran 5 ausgebildet. Beide Kontaktbereiche 7a, 7b stehen bis zu einer Kontaktebene 8 gegen eine kreisringförmige Abschlussfläche 12a des Dosenmantels 2 vor.In the illustrated embodiment, a first contact area 7a is bead-like along a closed line, preferably circular, but possibly also elliptical, formed around the can axis 3. A second contact area 7b is the central one Area of the closure membrane 5 is formed. Both contact areas 7a, 7b are up to to a contact plane 8 against an annular end surface 12a of the can jacket 2 before.

Ein Stülpdeckel 9 ist auf die mit der Membran 5 verschlossene Stirnseite des Dosenmantels 2 abnehmbar aufgesetzt. Der Deckel 9 umfasst eine Deckelfläche 10, welche die Dosenöffnung verschliesst, und einen Deckelkragen 11, der den Dosenmantel 2 am Endbereich aussen umschliesst. An der Innenseite der Deckelfläche 10 ist zumindest ein Abstützbereich 12b vorgesehen, in dem die Innenseite der Deckelfläche im Bereich der Kontaktebene 8 verläuft und somit zumindest an einen Kontaktbereich 7a, 7b der Membranfläche 5 anschliesst. In der dargestellten Ausführungsform sind ein erster und ein zweiter gegen das Doseninnere hineinragender Abstützbereich 12a und 12b ausgebildet. Der erste bzw. zweite Abstützbereich 12a bzw. 12b ist dem ersten bzw. zweiten Kontaktbereich 7a bzw. 7b zugeordnet und erstreckt sich entsprechend diesem um die Dosenachse 3. Der erste Abstützbereich 12a verläuft im Doseninneren somit wulstartig entlang einer geschlossenen Linie, vorzugsweise kreis-, gegebenenfalls aber auch ellipsenförmig. Der zweite Abstützbereich 12b ist als zentraler Bereich der Deckelfläche etwas ins Doseninnere hineingezogen ausgebildet. A slip lid 9 is on the front side of the can jacket closed with the membrane 5 2 removable attachments. The lid 9 comprises a lid surface 10 which closes the can opening, and a cover collar 11, which the can jacket 2 on Encloses end area outside. At least on the inside of the lid surface 10 a support area 12b is provided in which the inside of the lid surface in the area the contact plane 8 runs and thus at least to a contact area 7a, 7b Connects membrane surface 5. In the illustrated embodiment, a first and a second support region 12a and 12b protruding against the interior of the can. The first and second support areas 12a and 12b are the first and second, respectively Contact area 7a and 7b assigned and extends accordingly the can axis 3. The first support region 12a thus runs inside the can bead-like along a closed line, preferably circular, but optionally also elliptical. The second support area 12b is the central area of the cover surface somewhat drawn into the interior of the can.

Um den Deckel in der gewünschten Lage an der Dose festzuhalten, ist an der nach innen gerichteten Fläche des Deckelkragens 11 eine Nut 13 ausgebildet, die zur Aufnahme des von der Umbördelung des Mantelendes gebildeten ringförmigen Vorsprunges 14 dient. Bei aufgesetztem Deckel liegt die Deckelfläche 10 in den Bereichen, die nicht als Abstützbereiche 12a, 12b ausgebildet sind, im wesentlichen in der stirnseitigen Abschlussebene des Dosenmantels 2. Ein nach oben von der Deckelfläche 10 vorstehender Ring 15 passt in einen Ausnehmungsbereich des Dosenbodens 4, so dass die Dosen 2 stapelbar sind. Der Ausnehmungsbereich des Bodens 4 liegt im Innern der ringförmigen Bördelverbindung 16 zwischen Dosenboden 4 und Dosenmantel 2.In order to hold the lid in the desired position on the can, it is on the inside directed surface of the cover collar 11 formed a groove 13 for receiving the annular projection 14 formed by the flanging of the jacket end serves. When the lid is in place, the lid surface 10 lies in the areas that are not as Support areas 12a, 12b are formed, essentially in the end plane of the can jacket 2. A protruding upward from the lid surface 10 Ring 15 fits into a recess area of the can base 4, so that the cans 2 are stackable. The recess area of the bottom 4 lies in the interior of the annular Flare connection 16 between can bottom 4 and can jacket 2.

Gegebenenfalls umfasst die Membran einen Ausdehnungsbereich 17, vorzugsweise zwischen zwei Kontaktbereichen 7a, 7b. Die Ausdehnungsbereiche 7b und 17 sind wulst- bzw. sickenartig und verlaufen entlang einer geschlossenen Linie, vorzugsweise kreis- gegebenenfalls ellipsenförmig, um die Dosenachse 3. Der Ausdehnungsbereich 17 ermöglicht eine mit einer Volumenänderung im abgeschlossenen Dosenbereich verbundene Verformung der Verschlussmembran 5, insbesondere eine Vergrösserung bzw. Verkleinerung der Wulst im Ausdehnungsbereich 17.If appropriate, the membrane comprises an expansion region 17, preferably between two contact areas 7a, 7b. The expansion areas 7b and 17 are bead-like or bead-like and run along a closed line, preferably circular, possibly elliptical, around the can axis 3. The area of expansion 17 enables a volume change in the closed can area Deformation of the sealing membrane 5, in particular an enlargement or Reduction of the bead in the expansion area 17.

Fig. 2 zeigt, dass der Deckel und seine Teilbereiche kreisförmig ausgebildet sind. Es versteht sich, dass beliebige andere Deckel-Querschnittsformen und Anordnungen der Teilberiche möglich sind.2 shows that the cover and its partial areas are circular. It it is understood that any other lid cross-sectional shapes and arrangements of the Partial reports are possible.

Die Erfindung ist auf die dargestellten Ausführungsform nicht eingeschränkt. Es versteht sich von selbst, dass die verschiedenartigsten Anordnungen von einander zugeordneten Kontakt- und/oder Abstützbereichen möglich sind. Anstelle von geschlossenen Linien und/oder Flächen können auch radiale oder beliebig kombinierte Verläufe, insbesondere auch unterbrochene bzw. abschnittweise Anordnungen funktionsgleich vorgesehen werden. Es ist auch möglich, dass die Kontakt- bzw. Abstützbereiche nicht formgleich, sondern beispielsweise quer zueinander verlaufend ausgebildet sind, wobei vorzugsweise gewährleistet ist, dass das Stütz- und/oder das Verformungsverhalten in allen Verdrehungslagen zwischen Membran 5 und Deckel 9 im wesentlichen gleich ist. Gegebenenfalls liegt die Kontaktebene 8 im wesentlichen am stirnseitigen Ende des Dosenmantels 2, so dass die Abstützbereiche nicht nach innen vorstehen müssen. Die Innenseite der Deckelfläche 10 kann vielmehr flach ausgebildet sein und die Abstützbereiche sind die den Kontaktbereichen 7a, 7b zugewandten Teilbereiche der Deckelfläche 10.The invention is not restricted to the illustrated embodiment. It understands self-evident that the most diverse arrangements of each other Contact and / or support areas are possible. Instead of closed lines and / or surfaces can also radial or any combination of courses, in particular interrupted or section-wise arrangements can also be provided with the same function. It is also possible that the contact or support areas do not have the same shape, but instead for example, are designed to run transversely to one another, preferably it is guaranteed that the support and / or the deformation behavior in all twist positions between membrane 5 and cover 9 is substantially the same. Possibly the contact plane 8 is essentially at the front end of the can jacket 2 so that the support areas do not have to protrude inwards. The inside of the Rather, the lid surface 10 can be flat and the support areas are Subareas of the lid surface 10 facing the contact areas 7a, 7b.

Claims (6)

Dose mit wenigstens einer an einer Stirnseite des Dosenmantels (2) vorgesehenen Verschlussmembran (9) aus Papier und/oder Kunststoff- und/oder Metallflachmaterial bzw. -folie, die die Dose (1) mit einer Membranfläche (5) verschliesst, wobei die Aussenseite des in die Richtung der Dosenöffnung hochgezogenen Membranrandbereiches mit der Innenseite der Dosenwand (1) dicht verbunden, vorzugsweise verklebt oder heissversiegelt ist, und mit einem an der Stirnseite des Dosenmantels (2) bei der Verschlussmembran (5) aufsetzbaren Stülpdeckel (9), der den Dosenmantel (2) mit einer Deckelfläche (10) abschliesst, dadurch gekennzeichnet, dass die Membranfläche (5) mindestens einen gegen die Stirnseite vorstehenden Kontaktbereich (7a, 7b) umfasst, der bei aufgesetztem Stülpdeckel (9) zumindest teilweise an einen Abstützbereich (12a, 12b) der Innenseite der Stülpdeckelfläche (10) anlegbar ist.Can with at least one provided on one end face of the can jacket (2) Sealing membrane (9) made of paper and / or plastic and / or metal flat material or film, which closes the can (1) with a membrane surface (5), the Outside of the membrane edge area pulled up in the direction of the can opening tightly connected to the inside of the can wall (1), preferably is glued or heat sealed, and with one on the front of the can jacket (2) with the sealing membrane (5) attachable slip lid (9) that the can jacket (2) with a cover surface (10), characterized in that the membrane surface (5) has at least one contact region projecting towards the end face (7a, 7b), at least partially with the slip lid (9) in place to a support area (12a, 12b) on the inside of the slip lid surface (10) can be created. Dose nach Anspruch 1, dadurch gekennzeichnet, dass zumindest ein erster Kontaktbereich (7a) wulstartig entlang einer geschlossenen Linie, vorzugsweise kreisgegebenenfalls ellipsenförmig, um die Dosenachse (3) verläuft und/oder dass ein zweiter Kontaktbereich (7b) als zentraler Bereich der Membranfläche (5) ausgebildet ist.Box according to claim 1, characterized in that at least a first contact area (7a) bead-like along a closed line, preferably circular if necessary elliptical to the can axis (3) and / or that a second contact area (7b) is formed as the central area of the membrane surface (5) is. Dose nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Stülpdeckel (9) zumindest einen Abstützbereich (12a, 12b) umfasst, in dem die Innenseite der Deckelfläche (10) gegen einen Kontaktbereich (7a, 7b) der Membranfläche (5) in das Doseninnere hineinragend ausgebildet ist.Box according to claim 1 or 2, characterized in that the slip lid (9) comprises at least one support area (12a, 12b) in which the inside of the cover surface (10) against a contact area (7a, 7b) of the membrane surface (5) in the Can interior is protruding. Dose nach Anspruch 3, dadurch gekennzeichnet, dass zumindest ein erster Abstützbereich (12a) wulstartig entlang einer geschlossenen Linie, vorzugsweise kreisgegebenenfalls ellipsenförmig, um die Dosenachse (3) verläuft und/oder dass ein zweiter Abstützbereich (12b) als zentraler Bereich der Deckelfläche (10) ausgebildet ist.Can according to claim 3, characterized in that at least a first support area (12a) bead-like along a closed line, preferably circular if necessary elliptical to the can axis (3) and / or that a second support area (12b) is formed as the central area of the cover surface (10) is. Dose nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Ausdehnungsbereich (17), vorzugsweise zwischen zwei Kontaktbereichen (7a, 7b) vorgesehen ist und insbesondere wulst- bzw. sickenartig entlang einer geschlossenen Linie, vorzugsweise kreis- gegebenenfalls ellipsenförmig, um die Dosenachse (3) verläuft, wobei der Ausdehnungsbereich (17) eine mit einer Volumenänderung im abgeschlossenen Dosenbereich verbundene Verformung der Verschlussmembran (5) ermöglicht.Box according to one of claims 1 to 4, characterized in that an expansion area (17), preferably between two contact areas (7a, 7b) is and in particular bead or bead-like along a closed Line, preferably circular, possibly elliptical, around the can axis (3) runs, the expansion region (17) one with a volume change in the sealed can area associated deformation of the closure membrane (5) enables. Dose nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Dosenmantel (2) an der Stirnseite nach aussen umgebördelt ist und der Stülpdeckel (9) diese Umbördelung (14) in einer ringförmigen Nut (13) aufnehmbar macht.Can according to one of claims 1 to 5, characterized in that the can jacket (2) is flanged on the front and the slip lid (9) makes this flanging (14) receivable in an annular groove (13).
EP98108012A 1997-05-14 1998-05-02 Tin can with a foil closure membrane and a snap-on cap Expired - Lifetime EP0878409B1 (en)

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CH112997 1997-05-14
CH112997 1997-05-14
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DE59801369D1 (en) 2001-10-11
EP0878409B1 (en) 2001-09-05
ATE205155T1 (en) 2001-09-15
US6068154A (en) 2000-05-30

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