EP0634324B1 - System including a receptacle for filling the receptacle with a protecting gas - Google Patents

System including a receptacle for filling the receptacle with a protecting gas Download PDF

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Publication number
EP0634324B1
EP0634324B1 EP94109564A EP94109564A EP0634324B1 EP 0634324 B1 EP0634324 B1 EP 0634324B1 EP 94109564 A EP94109564 A EP 94109564A EP 94109564 A EP94109564 A EP 94109564A EP 0634324 B1 EP0634324 B1 EP 0634324B1
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EP
European Patent Office
Prior art keywords
container
seal
cover
housing
space
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EP94109564A
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German (de)
French (fr)
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EP0634324A2 (en
EP0634324A3 (en
Inventor
Franz Grassl
Hans Grassl
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/06Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being arranged for insertion into, and withdrawal from, the mouth of a filled container and operating in conjunction with means for sealing the container mouth

Definitions

  • the invention relates to a system containing a container for filling the container with a protective gas according to the preamble of claim 1.
  • a system according to the preamble of claim 1 is already known (FR-A-917757).
  • the closure plate is made of plastic or rubber, and is held on the piston by a suction arrangement.
  • a device for filling a can with protective gas is known.
  • the can can be moved up and down on a plate in a vacuum chamber with a piston rod.
  • the lid which has a flanged edge, is held at a distance from the can by a permanent magnet on a pressure plate on the top of the vacuum chamber.
  • the can is pressed with the piston rod upwards against the lid and thus closed.
  • the can and the lid must be centered exactly.
  • the plate and the holding plate are provided with centering devices.
  • the known device is therefore only suitable for a single can size.
  • the vacuum chamber also has a relatively large volume.
  • the object of the invention is to provide a simply constructed and easily operable system with which a container with a lid can also be gassed in a simple, safe manner.
  • the device for evacuating and filling the container with protective gas is also referred to below as a filling head.
  • the line can be used with which the space sealed by the seal between the housing and the cover can be evacuated.
  • a separate line is preferably used for connection to the protective gas source.
  • the container is first evacuated via the vacuum line and then filled with the protective gas. If the container is not sufficiently pressure-stable to evacuate it completely or almost completely, the protective gas can also be filled in several steps, with the container being only partially evacuated at each step, i.e. as far as the container is allows what the protective gas is supplied.
  • the carrier has for releasably fastening the closure plate a magnet and the closure plate is ferromagnetic so that it adheres to this magnet.
  • the closure plate can consist of iron or another ferromagnetic metal or of a ferromagnetic plastic.
  • the closure plate can also be constructed in multiple layers, for example from a metal plate which faces the magnet, and a layer of rubber or similar elastomeric material which adheres to the lid to seal the hole. It is also possible to use a metal plate, which is provided at its edge with a seal made of an elastomeric material.
  • a particularly reliable sealing of the hole in the lid is also achieved with a closure plate which has a projection which surrounds the hole and which is pressed firmly against a seal which is provided around the hole on the lid.
  • a cylinder space is provided in the filling head, in which a pneumatically operated piston can be displaced, to which the carrier is attached.
  • any gas that is compatible with the contents of the container can be used as the protective gas.
  • these include, in particular, inert gases, for example noble gases such as argon or nitrogen.
  • the protective gas can also be carbon dioxide or the like, for example.
  • the container which can be closed with the lid and which is to be filled with protective gas can be the original container, for example those in the trade Available paint or paint can. So that the original container with the system according to the invention can be filled with protective gas, the lid must be provided with a hole in order to fasten a seal. With the hole and the seal, the lid of the container can either be provided by the consumer, but the container is preferably already marketed with a hole and possibly this seal, the hole being closed, for example, by an adhesive tape or small plate.
  • the receptacle is preferably adapted to the size and shape of the original container in order not to unnecessarily extend the evacuation and not to waste protective gas.
  • paint and lacquer cans can be filled with protective gas after opening.
  • the application of the system according to the invention is not limited to this. Rather, the system according to the invention can be used with all oxygen-sensitive products which are supplied in cans or similar containers with a lid, but which generally do not use the entire contents of the container at once, but in smaller quantities over a longer period of time.
  • the system according to the invention can also be used to fill food containers with a protective gas, for example in the catering sector.
  • the device 1 has a filling head 2 which essentially consists of a solid cylinder which has an O-ring seal 6 on its end face 5 which faces the cover 3 of the container 4.
  • the seal 6 is seated in an annular groove 7, the inner flank of which is formed by a ring 9 fastened to the end face 5 with screws 8.
  • the filling head 2 can e.g. be made of plastic by injection molding or consist of metal. It has a diameter of, for example, 5 to 20 centimeters.
  • an axially extending cylinder space 10 designed as a blind bore, in which a sleeve 11 is seated, which e.g. can consist of metal and serves as a sliding bearing for a piston 12.
  • the piston 12 is sealed off from the sleeve 11 by piston rings 13, 14.
  • a disk-shaped carrier 15 for a disk-shaped closure plate 16 is attached to the piston 12.
  • the carrier 15 is arranged in a cylinder space 10 ′ with a larger diameter than the cylinder space 10.
  • the carrier 15 has on its side facing away from the cover 3 an annular shoulder 17, with which it rests in the extended state of the piston 12 shown in the drawing on the ring 9, which is attached to the cover 3 facing end face 5 of the filling head 2 is. Due to its contact with the ring shoulder 17 on the ring 9, the carrier 15 with the piston 12 is prevented from falling out of the housing 2 fixed. So that the carrier 15 arranged on the piston 12 can be moved axially, the filling head 2 has the cylindrical recess 10 ′ on the end face 5. In the extended state, the carrier 15 protrudes with the closure plate 16 over the seal 6 to the outside.
  • the piston 12 and the carrier 15 may be integrally formed, e.g. be made of plastic by injection molding or consist of metal.
  • the closure plate 16 is releasably attached to the carrier 15.
  • the carrier 15 has a permanent magnet 19 in a recess 18.
  • the closure plate 16 is made of steel. That is, it is ferromagnetic and thus adheres to the permanent magnet 19 of the carrier 15.
  • Three lines 22, 23, 24 are connected to the filling head 2 on the end face 21 facing away from the container 4.
  • the lines 22 and 23 lead to electrically actuable valves 25, 26 which are fastened on the end face 21 of the filling head 2.
  • the line 24 is connected directly to the filling head 2. From the valves 25, 26, bores in the filling head 2 (not shown in the drawing) lead laterally into the recess 10 ', while from the line 24 a bore (also not shown in the drawing) leads into the part of the cylinder space 10 closed by the piston 12.
  • Line 22 leads to a vacuum pump, not shown, line 23 to a pressure bottle, not shown, with protective gas, e.g. Argon, and line 24 also to the vacuum pump.
  • the head 1 can be covered at the top by a protective hood 27, as indicated in the drawing.
  • the lid 3 has a hole 28 in the middle with a diameter of, for example, 2 to 6 millimeters.
  • the hole 28 can but also be much larger, that is to say they take up practically the entire diameter of the cover 3.
  • the closure plate 16 is coated with a mass of rubber or another elastomeric material. This forms a seal 20 with which the closure plate 16 is sealed off from the cover 3 when it is arranged on the cover 3 in order to close the hole 28.
  • the lid 3 sits, as usual, with a seal 30 firmly on the edge 31 of the container 4th
  • the filled container 4 is e.g. delivered so that the hole 28 is closed with an adhesive tape.
  • the adhesive tape is removed.
  • the filling head 2 is in the state as shown in Fig. 1, e.g. placed by hand on the lid 3, so that the seal 6 on the filling head 2 is arranged around the opening 28 on the lid 3 and is pressed against the lid 3.
  • the cylinder chamber 10 is then evacuated via the line 24, as a result of which the piston 12 with the carrier 15 and the closure plate 16 magnetically adhering thereto is retracted.
  • valve 25 is now opened so that a vacuum is applied to the space via the line 22, which lies between the end face 5 of the filling head 2 and the cover 3 and is closed by the seal 6. Since this space communicates with the inside of the container 3 via the hole 28 in the lid 3, the container 4 is also evacuated.
  • the valve 25 is closed. This predetermined value depends primarily on the stability of the container 4, that is to say on the vacuum which the container 4 can withstand.
  • valve 26 is opened so that protective gas is now supplied to the space enclosed by the filling head 2, the lid 3 and the seal 6.
  • the shielding gas is supplied until a predetermined negative pressure in relation to the atmosphere (approx. 1000 millibars) of, for example, 800 millibars has been established. This means that a slight vacuum of minus 200 millibars remains in the container 4.
  • the valve 26 is then closed.
  • the evacuation and protective gas supply can take place automatically by means of corresponding pressure sensors which actuate the pressure valves 25, 26. Then the line 24 is connected to the atmosphere, so that the piston 12 is extended again and takes the position shown in the drawing. The negative pressure in the container 4 sucks the closure plate 16. This suction force is greater than the holding force of the magnet 19. As a result, the closure plate 16 adheres to the cover 3 when the filling head 2 is removed.
  • the negative pressure that is required in the container 4 in order to press the closure plate 16 so tightly against the seal 29 that a reliable seal is ensured depends on the diameter of the closure plate 16, that is to say the size of the surface of the closure plate 16 the negative pressure works. With a diameter of the plate 16 of 2 centimeters or more, a negative pressure of minus 100 millibars in relation to the atmospheric pressure is generally sufficient. If a vacuum of this size cannot be set, especially with larger containers, this can Closure plate 16 are either made larger or additionally fixed with an adhesive tape. It is also possible to provide the closure plate 16 with an adhesive coating on the side facing the cover 3.
  • the projection 29 of the seal 20 also achieves a very high surface pressure between the seal 20 and the cover 3 in the region of the projection 29 and thus a particularly reliable seal.
  • the diameter of the closure plate 16 is at least four times the diameter of the hole 28 in the cover 3.
  • the diameter of the annular projection 29 of the seal is also as large as possible, that is to say at least three times the diameter of the hole 28.
  • valves 25, 26 on the filling head 2 ensure that no air can get into the container 4 due to leaks in the line 23. This also reduces gas consumption.
  • FIG. 3 shows a support mold 32 with which a less stable container 4, for example a tin can, can be evacuated with the device 1 in order to then fill it with protective gas.
  • a less stable container 4 for example a tin can
  • the support form 32 has an inner wall 33 which is adapted to the shape and size of the container 4 to such an extent that, at most, a narrow, gap-shaped intermediate space 34 between the inner wall 33 and the peripheral wall of the container 4 remains.
  • the z. B. made of sheet metal container 4 is flared at its upper edge 31 towards the outside, as can be seen in particular from FIG. 1.
  • the support form 32 has at its upper edge 36 a sealing ring 37 on which the container 4 arranged in the support form 32 rests with its flanged edge 31. As a result, the intermediate space 34 is sealed off from the outside.
  • the intermediate space 34 can be evacuated.
  • a vacuum connection in the form of a connector 38 is provided on the support mold 32, to which a bore 39 connects, which opens out on the inner wall 33.
  • the vacuum in the intermediate space 34 is equal to or slightly greater than the vacuum that exists inside the container 4 when it is evacuated. So that no inward forces are exerted on the wall of the container 4, so that it, even if it is very thin-walled, is not deformed.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A device for filling a receptacle closable by means of a lid with an inert gas has a filling head which, on its end face confronting the lid, has a seal which can be laid around a hole in the lid. Connected to the filling head is at least one conduit, by means of which the space sealed off by the seal between the filling head and the lid can be evacuated and can be filled with the inert gas. <IMAGE>

Description

Die Erfindung bezieht sich auf ein einen Behälter enthaltendes System zum Füllen des Behälters mit einem Schutzgas nach dem Oberbegriff des Anspruchs 1.The invention relates to a system containing a container for filling the container with a protective gas according to the preamble of claim 1.

Wenn beispielsweise Farbdosen zur Entnahme einer kleineren Farbmenge geöffnet und dann wieder geschlossen werden, tritt in die Dose Luft ein, die zu einer Hautbildung und damit zur Unbrauchbarkeit des gesamten restlichen Inhaltes der Dose führen kann. Zudem bereitet die Entsorgung der unbrauchbaren Farbe in der Dose Probleme. Ähnliche Schwierigkeiten treten bei anderen sauerstoffempfindlichen Produkten auf, die in Dosen oder dergleichen Behältern mit einem Deckel geliefert werden, bei denen jedoch im allgemeinen nicht der Inhalt auf einmal, sondern in kleinen Mengen verwendet wird. Diese Schwierigkeiten ließen sich vermeiden, wenn man den Behälter nach jedem Öffnen mit einem Schutzgas füllen könnte.If, for example, paint cans are opened to remove a smaller amount of paint and then closed again, air enters the can, which can lead to skin formation and thus to the uselessness of the entire remaining contents of the can. In addition, the disposal of the unusable paint in the can creates problems. Similar difficulties are encountered with other oxygen sensitive products which are supplied in cans or the like with a lid, but which generally do not use the contents all at once but in small quantities. These difficulties could be avoided if the container could be filled with a protective gas each time it was opened.

Ein System nach dem Oberbegriff des Anspruchs 1 ist bereits bekannt (FR-A-917757).A system according to the preamble of claim 1 is already known (FR-A-917757).

Das Verschlußplättchen besteht dabei aus Kunststoff oder Gummi, und wird am Kolben gehalten durch eine Sauganordnung.The closure plate is made of plastic or rubber, and is held on the piston by a suction arrangement.

Aus der DE-OS 36 10 634 ist es bekannt, den Deckel eines Behälters mit einem Loch zu versehen, das mit einem Verschlußplättchen versehen ist. Zum Evakuieren des Behälters wird eine Vakuumglocke über das auf das Loch gelegte Verschlußplättchen gestülpt. Durch das Vakuum wird das Plättchen nach oben gezogen, wodurch das Loch freigegeben und damit der Behälter evakuiert wird. Nach Abschalten des Vakuums saugt der Unterdruck im Behälter das Plättchen an, so daß das Plättchen das Loch dicht verschließt.From DE-OS 36 10 634 it is known to provide the lid of a container with a hole which is provided with a closure plate. To evacuate the container, a vacuum bell is placed over the closure plate placed on the hole. The plate is pulled upwards by the vacuum, thereby releasing the hole and thus evacuating the container. After switching off the vacuum, the vacuum in the container sucks in the plate so that the plate closes the hole tightly.

Aus DE-A-26 36 003 ist eine Vorrichtung zum Füllen einer Dose mit Schutzgas bekannt. Die Dose ist auf einem Teller in einer Vakuumkammer mit einer Kolbenstange auf- und abbewegbar. Beim Evakuieren wird der Deckel, der einen hochgebördelten Rand aufweist, im Abstand von der Dose mit einem Permanentmagneten an einer Druckplatte an der Oberseite der Vakuumkammer gehalten. Nach dem Befüllen mit Schutzgas mit einem Druck unterhalb Atmosphärendruck wird die Dose mit der Kolbenstange nach oben gegen den Deckel gedrückt und damit verschlossen. Die Dose und der Deckel müssen genau zentriert werden. Dazu sind der Teller und die Halteplatte mit Zentriereinrichtungen versehen. Die bekannte Vorrichtung ist damit nur für eine einzige Dosengröße geeignet. Auch weist die Vakuumkammer ein relativ großes Volumen auf.From DE-A-26 36 003 a device for filling a can with protective gas is known. The can can be moved up and down on a plate in a vacuum chamber with a piston rod. During evacuation, the lid, which has a flanged edge, is held at a distance from the can by a permanent magnet on a pressure plate on the top of the vacuum chamber. After filling with protective gas at a pressure below atmospheric pressure, the can is pressed with the piston rod upwards against the lid and thus closed. The can and the lid must be centered exactly. For this purpose, the plate and the holding plate are provided with centering devices. The known device is therefore only suitable for a single can size. The vacuum chamber also has a relatively large volume.

Aufgabe der Erfindung ist es, ein einfach aufgebautes und einfach betätigbares System bereitzustellen, mit dem ein Behälter mit Deckel auch auf einfache, sichere Art begast werden kann.The object of the invention is to provide a simply constructed and easily operable system with which a container with a lid can also be gassed in a simple, safe manner.

Dies wird erfindungsgemäß mit dem im Anspruch 1 angegebenen System erreicht. In den Unteransprüchen sind vorteilhafte Ausgestaltungen der Erfindung wiedergegeben.This is achieved according to the invention with the system specified in claim 1. Advantageous embodiments of the invention are given in the subclaims.

Die Vorrichtung zum Evakuieren und Füllen des Behälters mit Schutzgas wird nachstehend auch als Füllkopf bezeichnet.The device for evacuating and filling the container with protective gas is also referred to below as a filling head.

Zum Anschluß an die Schutzgasquelle kann die Leitung verwendet werden, mit der der durch die Dichtung abgedichtete Raum zwischen dem Gehäuse und dem Deckel evakuierbar ist. Vorzugsweise wird jedoch zum Anschluß an die Schutzgasquelle eine separate Leitung verwendet.For connection to the protective gas source, the line can be used with which the space sealed by the seal between the housing and the cover can be evacuated. However, a separate line is preferably used for connection to the protective gas source.

Nach der Erfindung wird der Behälter über die Vakuumleitung zunächst evakuiert und dann mit dem Schutzgas gefüllt. Wenn der Behälter nicht ausreichend druckstabil ist, um ihn ganz oder nahezu ganz zu evakuieren, kann das Füllen mit dem Schutzgas auch in mehreren Schritten vorgenommen werden, wobei der Behälter bei jedem Schritt nur zum Teil evakuiert wird, also so weit, wie es der Behälter zuläßt, worauf das Schutzgas zugeführt wird.According to the invention, the container is first evacuated via the vacuum line and then filled with the protective gas. If the container is not sufficiently pressure-stable to evacuate it completely or almost completely, the protective gas can also be filled in several steps, with the container being only partially evacuated at each step, i.e. as far as the container is allows what the protective gas is supplied.

Zur lösbaren Befestigung des Verschlußplättchens weist der Träger einen Magneten auf und das Verschlußplättchen ist ferromagnetisch, so daß es an diesem Magneten haftet.The carrier has for releasably fastening the closure plate a magnet and the closure plate is ferromagnetic so that it adheres to this magnet.

Das Verschlußplättchen kann dabei aus Eisen oder einem anderen ferromagnetischen Metall bestehen oder aus einem ferromagnetischen Kunststoff. Auch kann das Verschlußplättchen mehrschichtig aufgebaut sein, beispielsweise aus einem Metallplättchen, das dem Magneten zugewandt ist, und einer Schicht aus Gummi oder dergleichen elastomeren Material, das zum Abdichten des Lochs am Deckel haftet. Ferner ist es möglich, ein Metallplättchen zu verwenden, welches an seinem Rand mit einer Dichtung aus einem elastomeren Material versehen ist.The closure plate can consist of iron or another ferromagnetic metal or of a ferromagnetic plastic. The closure plate can also be constructed in multiple layers, for example from a metal plate which faces the magnet, and a layer of rubber or similar elastomeric material which adheres to the lid to seal the hole. It is also possible to use a metal plate, which is provided at its edge with a seal made of an elastomeric material.

Eine besonders zuverlässige Abdichtung des Lochs in dem Deckel wird ferner mit einem Verschlußplättchen erreicht, das einen das Loch umschließenden Vorsprung aufweist, welcher fest gegen eine Dichtung gepreßt wird, die um das Loch auf dem Deckel vorgesehen ist.A particularly reliable sealing of the hole in the lid is also achieved with a closure plate which has a projection which surrounds the hole and which is pressed firmly against a seal which is provided around the hole on the lid.

Zur Bewegbarkeit des Trägers in axialer Richtung ist in dem Füllkopf ein Zylinderraum vorgesehen, in dem ein pneumatisch betätigter Kolben verschiebbar ist, an dem der Träger befestigt ist.For the mobility of the carrier in the axial direction, a cylinder space is provided in the filling head, in which a pneumatically operated piston can be displaced, to which the carrier is attached.

Als Schutzgas kommt jedes gegenüber dem Inhalt des Behälters verträgliches Gas in Frage. Dazu zählen insbesondere inerte Gase, also beispielsweise Edelgase, wie Argon, oder Stickstoff. Jedoch kann das Schutzgas beispielsweise auch Kohlendioxid oder dergleichen sein.Any gas that is compatible with the contents of the container can be used as the protective gas. These include, in particular, inert gases, for example noble gases such as argon or nitrogen. However, the protective gas can also be carbon dioxide or the like, for example.

Der mit dem Deckel verschließbare Behälter, der mit Schutzgas gefüllt werden soll, kann der Originalbehälter sein, also beispielsweise die im Handel erhältliche Lack- oder Farbdose. Damit der Originalbehälter mit dem erfindungsgemäßen System mit Schutzgas gefüllt werden kann, muß der Deckel mit einem Loch versehen werden, um das eine Dichtung zu befestigen ist. Mit dem Loch und der Dichtung kann der Deckel des Behälters entweder vom Verbraucher versehen werden, vorzugsweise wird der Behälter jedoch bereits mit einem Loch und gegebenenfalls dieser Dichtung in den Handel gebracht, wobei das Loch z.B. durch ein Klebeband oder -plättchen verschlossen ist.The container which can be closed with the lid and which is to be filled with protective gas can be the original container, for example those in the trade Available paint or paint can. So that the original container with the system according to the invention can be filled with protective gas, the lid must be provided with a hole in order to fasten a seal. With the hole and the seal, the lid of the container can either be provided by the consumer, but the container is preferably already marketed with a hole and possibly this seal, the hole being closed, for example, by an adhesive tape or small plate.

Es ist jedoch auch denkbar, einen separaten Aufnahmebehälter mit Deckel zu verwenden, in den der im Handel erhältliche Behälter nach dem Öffnen gestellt wird. Der Deckel des Aufnahmebehälters ist dabei mit dem Loch und gegebenenfalls um das Loch mit der Dichtung versehen.However, it is also conceivable to use a separate receptacle with a lid, in which the commercially available container is placed after opening. The lid of the receptacle is provided with the hole and possibly around the hole with the seal.

Der Aufnahmebehälter ist dabei vorzugsweise der Größe und Form des Originalbehälters angepaßt, um das Evakuieren nicht unnötig zu verlängern und kein Schutzgas zu verschwenden.The receptacle is preferably adapted to the size and shape of the original container in order not to unnecessarily extend the evacuation and not to waste protective gas.

Mit dem erfindungsgemäßen System können insbesondere Farb- und Lackdosen nach dem Öffnen mit Schutzgas gefüllt werden. Die Anwendung des erfindungsgemäßen Systems ist jedoch darauf nicht beschränkt. Vielmehr ist das erfindungsgemäße System bei allen sauerstoffempfindlichen Produkten anwendbar, die in Dosen oder dergleichen Behältern mit einem Deckel geliefert werden, bei denen jedoch im allgemeinen nicht der gesamte Inhalt des Behälters auf einmal verwendet wird, sondern in kleineren Mengen über einen längeren Zeitraum. So können mit dem erfindungsgemäßen System auch Lebensmittelbehälter z.B. im Gastronomiebereich mit einem Schutzgas gefüllt werden.With the system according to the invention, in particular paint and lacquer cans can be filled with protective gas after opening. However, the application of the system according to the invention is not limited to this. Rather, the system according to the invention can be used with all oxygen-sensitive products which are supplied in cans or similar containers with a lid, but which generally do not use the entire contents of the container at once, but in smaller quantities over a longer period of time. The system according to the invention can also be used to fill food containers with a protective gas, for example in the catering sector.

Nachstehend ist eine Ausführungsform des erfindungsgemäßen Evakuierungssystems anhand der Zeichnung näher beschrieben. Darin zeigen:

Fig. 1
einen Schnitt durch das System vor dem Aufsetzen auf den Deckel eines Behälters;
Fig. 2
einen Schnitt durch das Verschlußplättchen; und
Fig. 3
einen Schnitt durch eine Stützform mit darin angeordnetem Behälter.
An embodiment of the evacuation system according to the invention is described below with reference to the drawing. In it show:
Fig. 1
a section through the system before placing on the lid of a container;
Fig. 2
a section through the closure plate; and
Fig. 3
a section through a support form with a container arranged therein.

Die erfindungsgemäße Vorrichtung 1 weist einen Füllkopf 2 auf, der im wesentlichen aus einem massiven Zylinder besteht, der an seiner dem Deckel 3 des Behälters 4 zugewandten Stirnseite 5 eine O-Ring-Dichtung 6 aufweist. Die Dichtung 6 sitzt in einer Ringnut 7, deren innere Flanke durch einen an der Stirnseite 5 mit Schrauben 8 befestigten Ring 9 gebildet wird.The device 1 according to the invention has a filling head 2 which essentially consists of a solid cylinder which has an O-ring seal 6 on its end face 5 which faces the cover 3 of the container 4. The seal 6 is seated in an annular groove 7, the inner flank of which is formed by a ring 9 fastened to the end face 5 with screws 8.

Der Füllkopf 2 kann z.B. durch Spritzguß aus Kunststoff hergestellt sein oder aus Metall bestehen. Es weist einen Durchmesser von beispielsweise 5 bis 20 Zentimeter auf.The filling head 2 can e.g. be made of plastic by injection molding or consist of metal. It has a diameter of, for example, 5 to 20 centimeters.

In dem Füllkopf 2 ist ein als Sackbohrung ausgebildeter axial verlaufender Zylinderraum 10 vorgesehen, in dem eine Hülse 11 sitzt, die z.B. aus Metall bestehen kann und als Gleitlager für einen Kolben 12 dient. Der Kolben 12 ist durch Kolbenringe 13, 14 gegenüber der Hülse 11 abgedichtet.Provided in the filling head 2 is an axially extending cylinder space 10 designed as a blind bore, in which a sleeve 11 is seated, which e.g. can consist of metal and serves as a sliding bearing for a piston 12. The piston 12 is sealed off from the sleeve 11 by piston rings 13, 14.

An seiner dem Deckel 3 zugewandten Seite ist an dem Kolben 12 ein scheibenförmiger Träger 15 für ein scheibenförmiges Verschlußplättchen 16 befestigt. Der Träger 15 ist in einem Zylinderraum 10' mit gegenüber dem Zylinderraum 10 vergrößertem Durchmesser angeordnet.On its side facing the cover 3, a disk-shaped carrier 15 for a disk-shaped closure plate 16 is attached to the piston 12. The carrier 15 is arranged in a cylinder space 10 ′ with a larger diameter than the cylinder space 10.

Der Träger 15 weist an seiner von dem Deckel 3 abgewandten Seite eine Ringschulter 17 auf, mit der er in dem in der Zeichnung dargestellten ausgefahrenen Zustand des Kolbens 12 an dem Ring 9 anliegt, der an der dem Deckel 3 zugewandten Stirnseite 5 des Füllkopfes 2 befestigt ist. Durch seine Anlage mit der Ringschulter 17 an dem Ring 9 ist der Träger 15 mit dem Kolben 12 gegen Herausfallen aus dem Gehäuse 2 fixiert. Damit der an dem Kolben 12 angeordnete Träger 15 axial bewegbar ist, weist der Füllkopf 2 an der Stirnseite 5 die zylindrische Ausnehmung 10' auf. Im ausgefahrenen Zustand ragt der Träger 15 mit dem Verschlußplättchen 16 über die Dichtung 6 nach außen.The carrier 15 has on its side facing away from the cover 3 an annular shoulder 17, with which it rests in the extended state of the piston 12 shown in the drawing on the ring 9, which is attached to the cover 3 facing end face 5 of the filling head 2 is. Due to its contact with the ring shoulder 17 on the ring 9, the carrier 15 with the piston 12 is prevented from falling out of the housing 2 fixed. So that the carrier 15 arranged on the piston 12 can be moved axially, the filling head 2 has the cylindrical recess 10 ′ on the end face 5. In the extended state, the carrier 15 protrudes with the closure plate 16 over the seal 6 to the outside.

Der Kolben 12 und der Träger 15 können einstückig ausgebildet sein, und z.B. durch Spritzguß aus Kunststoff hergestellt sein oder aus Metall bestehen.The piston 12 and the carrier 15 may be integrally formed, e.g. be made of plastic by injection molding or consist of metal.

Das Verschlußplättchen 16 ist lösbar am Träger 15 befestigt. Dazu weist der Träger 15 in einer Ausnehmung 18 einen Permanentmagnet 19 auf. Das Verschlußplättchen 16 besteht aus Stahl. Das heißt, es ist ferromagnetisch und haftet damit an dem Permanentmagneten 19 des Trägers 15.The closure plate 16 is releasably attached to the carrier 15. For this purpose, the carrier 15 has a permanent magnet 19 in a recess 18. The closure plate 16 is made of steel. That is, it is ferromagnetic and thus adheres to the permanent magnet 19 of the carrier 15.

An dem Füllkopf 2 sind an der von dem Behälter 4 abgewandten Stirnseite 21 drei Leitungen 22, 23, 24 angeschlossen. Die Leitungen 22 und 23 führen dabei zu elektrisch betätigbaren Ventilen 25, 26, die auf der Stirnseite 21 des Füllkopfes 2 befestigt sind. Die Leitung 24 ist direkt an den Füllkopf 2 angeschlossen. Von den Ventilen 25, 26 führen in der Zeichnung nicht dargestellte Bohrungen in dem Füllkopf 2 seitlich in die Ausnehmung 10', während von der Leitung 24 eine in der Zeichnung ebenfalls nicht dargestellte Bohrung in den durch den Kolben 12 abgeschlossenen Teil des Zylinderraums 10 führt. Die Leitung 22 führt zu einer nicht dargestellten Vakuumpumpe, die Leitung 23 zu einer nicht dargestellten Druckflasche mit Schutzgas, z.B. Argon, und die Leitung 24 ebenfalls zu der Vakuumpumpe.Three lines 22, 23, 24 are connected to the filling head 2 on the end face 21 facing away from the container 4. The lines 22 and 23 lead to electrically actuable valves 25, 26 which are fastened on the end face 21 of the filling head 2. The line 24 is connected directly to the filling head 2. From the valves 25, 26, bores in the filling head 2 (not shown in the drawing) lead laterally into the recess 10 ', while from the line 24 a bore (also not shown in the drawing) leads into the part of the cylinder space 10 closed by the piston 12. Line 22 leads to a vacuum pump, not shown, line 23 to a pressure bottle, not shown, with protective gas, e.g. Argon, and line 24 also to the vacuum pump.

Der Kopf 1 kann nach oben durch eine Schutzhaube 27 abgedeckt sein, wie in der Zeichnung angedeutet.The head 1 can be covered at the top by a protective hood 27, as indicated in the drawing.

Der Deckel 3 weist in der Mitte ein Loch 28 mit einem Durchmesser von z.B. 2 bis 6 Millimeter auf. Das Loch 28 kann aber auch wesentlich größer sein, also maximal praktisch den gesamten Durchmesser des Deckels 3 einnehmen.The lid 3 has a hole 28 in the middle with a diameter of, for example, 2 to 6 millimeters. The hole 28 can but also be much larger, that is to say they take up practically the entire diameter of the cover 3.

Gemäß Fig. 2 ist das Verschlußplättchen 16 mit einer Masse aus Gummi oder einem anderen elastomeren Material beschichtet. Dadurch wird eine Dichtung 20 gebildet, mit der das Verschlußplättchen 16 gegenüber dem Deckel 3 abgedichtet wird, wenn es auf dem Deckel 3 angeordnet ist, um das Loch 28 zu verschließen.2, the closure plate 16 is coated with a mass of rubber or another elastomeric material. This forms a seal 20 with which the closure plate 16 is sealed off from the cover 3 when it is arranged on the cover 3 in order to close the hole 28.

Der Deckel 3 sitzt, wie üblich, mit einer Dichtung 30 fest auf dem Rand 31 des Behälters 4.The lid 3 sits, as usual, with a seal 30 firmly on the edge 31 of the container 4th

Der gefüllte Behälter 4 wird z.B. so angeliefert, daß das Loch 28 mit einem Klebeband verschlossen ist. Wenn dann der Behälter 4 geöffnet worden ist, um einen Teil seines Inhaltes zu entnehmen, wird das Klebeband abgenommen. Um dann die Luft aus dem mit dem Deckel 3 verschlossenen Behälter 4 zu entfernen, wird folgendermaßen vorgegangen:The filled container 4 is e.g. delivered so that the hole 28 is closed with an adhesive tape. When the container 4 has been opened to remove part of its contents, the adhesive tape is removed. In order to then remove the air from the container 4 closed with the lid 3, the procedure is as follows:

Der Füllkopf 2 wird in dem Zustand, wie er in Fig. 1 dargestellt ist, z.B. mit der Hand auf den Deckel 3 aufgesetzt, so daß die Dichtung 6 am Füllkopf 2 um die Öffnung 28 am Deckel 3 angeordnet ist und gegen den Deckel 3 gedrückt wird.The filling head 2 is in the state as shown in Fig. 1, e.g. placed by hand on the lid 3, so that the seal 6 on the filling head 2 is arranged around the opening 28 on the lid 3 and is pressed against the lid 3.

Alsdann wird über die Leitung 24 der Zylinderraum 10 evakuiert, wodurch der Kolben 12 mit dem Träger 15 und dem daran magnetisch haftenden Verschlußplättchen 16 eingefahren wird.The cylinder chamber 10 is then evacuated via the line 24, as a result of which the piston 12 with the carrier 15 and the closure plate 16 magnetically adhering thereto is retracted.

Das Ventil 25 wird nun geöffnet, so daß über die Leitung 22 an den Raum ein Vakuum angelegt wird, der zwischen der Stirnseite 5 des Füllkopfes 2 und dem Deckel 3 liegt und durch die Dichtung 6 abgeschlossen wird. Da dieser Raum mit dem Inneren des Behälters 3 über das Loch 28 im Deckel 3 kommuniziert, wird zugleich der Behälter 4 evakuiert.The valve 25 is now opened so that a vacuum is applied to the space via the line 22, which lies between the end face 5 of the filling head 2 and the cover 3 and is closed by the seal 6. Since this space communicates with the inside of the container 3 via the hole 28 in the lid 3, the container 4 is also evacuated.

Wenn der mit einem Drucksensor gemessene Unterdruck einen vorgegebenen Wert von z.B. 200 Millibar erreicht hat, wird das Ventil 25 geschlossen. Dieser vorgegebene Wert richtet sich vor allem nach der Stabilität des Behälters 4, also danach, welches Vakuum der Behälter 4 aushält.If the negative pressure measured with a pressure sensor has a predetermined value of e.g. Has reached 200 millibars, the valve 25 is closed. This predetermined value depends primarily on the stability of the container 4, that is to say on the vacuum which the container 4 can withstand.

Alsdann wird das Ventil 26 geöffnet, so daß dem Raum, der von dem Füllkopf 2, dem Deckel 3 und der Dichtung 6 eingeschlossen wird, nunmehr Schutzgas zugeführt wird. Die Schutzgaszufuhr erfolgt, bis sich ein vorgegebener Unterdruck gegenüber der Atmosphäre (ca. 1000 Millibar) von beispielsweise 800 Millibar eingestellt hat. Das heißt, es verbleibt ein leichtes Vakuum von minus 200 Millibar im Behälter 4. Alsdann wird das Ventil 26 geschlossen.Then the valve 26 is opened so that protective gas is now supplied to the space enclosed by the filling head 2, the lid 3 and the seal 6. The shielding gas is supplied until a predetermined negative pressure in relation to the atmosphere (approx. 1000 millibars) of, for example, 800 millibars has been established. This means that a slight vacuum of minus 200 millibars remains in the container 4. The valve 26 is then closed.

Die Evakuierung und Schutzgaszufuhr kann durch entsprechende Drucksensoren, die die Druckventile 25, 26 betätigen, automatisch erfolgen. Alsdann wird die Leitung 24 mit der Atmosphäre verbunden, so daß der Kolben 12 wieder ausgefahren wird und die in der Zeichnung dargestellte Stellung einnimmt. Der Unterdruck im Behälter 4 saugt das Verschlußplättchen 16 an. Diese Saugkraft ist größer als die Haltekraft des Magneten 19. Dadurch bleibt das Verschlußplättchen 16 an dem Deckel 3 haften, wenn der Füllkopf 2 abgenommen wird.The evacuation and protective gas supply can take place automatically by means of corresponding pressure sensors which actuate the pressure valves 25, 26. Then the line 24 is connected to the atmosphere, so that the piston 12 is extended again and takes the position shown in the drawing. The negative pressure in the container 4 sucks the closure plate 16. This suction force is greater than the holding force of the magnet 19. As a result, the closure plate 16 adheres to the cover 3 when the filling head 2 is removed.

Der Unterdruck, der in dem Behälter 4 erforderlich ist, um das Verschlußplättchen 16 so fest gegen die Dichtung 29 zu drücken, daß eine zuverlässige Abdichtung gewährleistet ist, hängt von dem Durchmesser des Verschlußplättchens 16 ab, also der Größe der Fläche des Verschlußplättchens 16, auf die der Unterdruck wirkt. Bei einem Durchmesser des Plättchens 16 von 2 Zentimeter oder mehr reicht im allgemeinen ein Unterdruck von minus 100 Millibar gegenüber dem Atmosphärendruck aus. Wenn insbesondere bei größeren Behältern ein Unterdruck dieser Größe nicht eingestellt werden kann, kann das Verschlußplättchen 16 entweder größer ausgebildet werden oder zusätzlich mit einem Klebeband fixiert werden. Auch ist es möglich, das Verschlußplättchen 16 an der dem Deckel 3 zugewandten Seite mit einer Klebebeschichtung zu versehen.The negative pressure that is required in the container 4 in order to press the closure plate 16 so tightly against the seal 29 that a reliable seal is ensured depends on the diameter of the closure plate 16, that is to say the size of the surface of the closure plate 16 the negative pressure works. With a diameter of the plate 16 of 2 centimeters or more, a negative pressure of minus 100 millibars in relation to the atmospheric pressure is generally sufficient. If a vacuum of this size cannot be set, especially with larger containers, this can Closure plate 16 are either made larger or additionally fixed with an adhesive tape. It is also possible to provide the closure plate 16 with an adhesive coating on the side facing the cover 3.

Damit die Kraft, mit der das Verschlußplättchen 16 auf dem Deckel 3 gehalten wird, möglichst groß ist, muß die Fläche groß sein, auf die der Unterdruck einwirkt. Dies läßt sich mit einem umlaufenden ringförmigen Vorsprung 29 der Dichtung 20 mit möglichst großem Abstand vom Loch 28, also am Rand des Plättchens 16 erreichen.So that the force with which the closure plate 16 is held on the cover 3 is as large as possible, the area on which the negative pressure acts must be large. This can be achieved with a circumferential annular projection 29 of the seal 20 with the greatest possible distance from the hole 28, that is to say at the edge of the plate 16.

Durch den Vorsprung 29 der Dichtung 20 wird zudem eine sehr hohe Flächenpressung zwischen der Dichtung 20 und dem Deckel 3 im Bereich des Vorsprungs 29 und damit eine besonders zuverlässige Abdichtung erreicht.The projection 29 of the seal 20 also achieves a very high surface pressure between the seal 20 and the cover 3 in the region of the projection 29 and thus a particularly reliable seal.

Der Durchmesser des Verschlußplättchens 16 ist mindestens viermal so groß wie der Durchmesser des Lochs 28 im Deckel 3. Der Durchmesser des ringförmigen Vorsprungs 29 der Dichtung ist ebenfalls möglichst groß, also mindestens das dreifache des Durchmessers des Lochs 28.The diameter of the closure plate 16 is at least four times the diameter of the hole 28 in the cover 3. The diameter of the annular projection 29 of the seal is also as large as possible, that is to say at least three times the diameter of the hole 28.

Durch die Ventile 25, 26 auf dem Füllkopf 2 ist sichergestellt, daß durch Undichtigkeiten in der Leitung 23 keine Luft in den Behälter 4 gelangen kann. Auch wird dadurch der Gasverbrauch herabgesetzt.The valves 25, 26 on the filling head 2 ensure that no air can get into the container 4 due to leaks in the line 23. This also reduces gas consumption.

In Fig. 3 ist eine Stützform 32 gezeigt, mit der ein weniger stabiler Behälter 4, beispielsweise eine Blechdose, mit der Vorrichtung 1 evakuiert werden kann, um ihn dann mit Schutzgas zu füllen.FIG. 3 shows a support mold 32 with which a less stable container 4, for example a tin can, can be evacuated with the device 1 in order to then fill it with protective gas.

Die Stützform 32 weist dazu eine Innenwand 33 auf, die der Form und Größe des Behälters 4 soweit angepaßt ist, daß allenfalls ein schmaler, spaltförmiger Zwischenraum 34 zwischen der Innenwand 33 und der Umfangswand des Behälters 4 übrigbleibt. Der z. B. aus Blech bestehende Behälter 4 ist an seinem oberen Rand 31 nach außen hin gebördelt, wie insbesondere aus Fig. 1 ersichtlich. Die Stützform 32 weist an ihrem oberen Rand 36 einen Dichtring 37 auf, auf dem der in der Stützform 32 angeordnete Behälter 4 mit seinem Bördelrand 31 aufliegt. Dadurch wird der Zwischenraum 34 nach außen abgedichtet.For this purpose, the support form 32 has an inner wall 33 which is adapted to the shape and size of the container 4 to such an extent that, at most, a narrow, gap-shaped intermediate space 34 between the inner wall 33 and the peripheral wall of the container 4 remains. The z. B. made of sheet metal container 4 is flared at its upper edge 31 towards the outside, as can be seen in particular from FIG. 1. The support form 32 has at its upper edge 36 a sealing ring 37 on which the container 4 arranged in the support form 32 rests with its flanged edge 31. As a result, the intermediate space 34 is sealed off from the outside.

Der Zwischenraum 34 ist evakuierbar. Dazu ist ein Vakuumanschluß in Form eines Stutzens 38 an der Stützform 32 vorgesehen, an den sich eine Bohrung 39 anschließt, die an der Innenwand 33 mündet.The intermediate space 34 can be evacuated. For this purpose, a vacuum connection in the form of a connector 38 is provided on the support mold 32, to which a bore 39 connects, which opens out on the inner wall 33.

Wenn der Behälter 4 evakuiert wird, wird gleichzeitig an den Zwischenraum 34 über den Stutzen 38 ein Vakuum angelegt. Das Vakuum im Zwischenraum 34 ist gleich oder geringfügig größer als das Vakuum, das im Inneren des Behälters 4 herrscht, wenn dieser evakuiert wird. Damit werden auf die Wandung des Behälters 4 keine nach innen gerichteten Kräfte ausgeübt, so daß er, auch wenn er sehr dünnwandig ist, nicht verformt wird.When the container 4 is evacuated, a vacuum is simultaneously applied to the intermediate space 34 via the nozzle 38. The vacuum in the intermediate space 34 is equal to or slightly greater than the vacuum that exists inside the container 4 when it is evacuated. So that no inward forces are exerted on the wall of the container 4, so that it, even if it is very thin-walled, is not deformed.

Claims (8)

  1. A system comprising a container (4) with a cover (3) having a hole (28) to be sealed with a sealing plate (16), and an apparatus for evacuating said container having a housing (2) which has a seal (6) on its front facing the cover (3) and to which at least one pipe (22, 23) is connected for evacuating the space sealed by the seal (6) between the housing (2) and the cover (3), a piston (12) being provided on the front of the housing (2) facing the cover (3), said piston being axially displaceable in an evacuable cylinder space (10) in the housing (2) and having the sealing plate (16) detachably fastenable thereto, characterized in that a carrier (15) with a magnet (19) for carrying the sealing plate is fastened to the piston (12) within the seal (6), the carrier (15) has a ring shoulder (17) which, when the cylinder space (10) is subjected to atmospheric pressure, secures the carrier (15), by lying against a ring (9) fastened to the housing (2), from falling out or being pulled out when the housing (2) is lifted off after the evacuated container (4) is sealed, and a protective gas source is provided to be connected with the space sealed by the seal (6) between the housing (2) and the cover (3).
  2. The system of claim 1, characterized in that pipes (22, 23) are connected to the filling head (2), one for evacuating and one for filling the space between the filling head (2) and the cover (3).
  3. The system of claim 1, characterized in that a seal (20) is provided for sealing the sealing plate (16) from the cover (3).
  4. The system of claim 3, characterized in that the seal (20) is fastened to the sealing plate (16).
  5. The system of claim 3 or 4, characterized in that the seal (20) forms a peripheral projection (29) which is spaced from the hole (28) when the sealing plate (16) is disposed on the cover (3).
  6. The system of any of the above claims, characterized in that the container (4) with the cover (3) is designed for receiving an original container.
  7. The system of any of claims 1 to 5, characterized in that a support form (32) is provided for receiving a container (4) to be filled with protective gas, the inside wall (33) of the support form (32) being adapted to the outside dimensions of the container (4) so as to form a slit-shaped space (34) between the inside wall (33) and the container (4), and the space (34) being evacuable together with the container (4).
  8. The system of claim 7, characterized in that the container (4) has a radially outward extending edge (31), and the support form (32) has on its edge (36) a seal (37) to lie against the edge (31) of the container (4).
EP94109564A 1993-06-21 1994-06-21 System including a receptacle for filling the receptacle with a protecting gas Expired - Lifetime EP0634324B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4320544A DE4320544C2 (en) 1993-06-21 1993-06-21 Evacuation system
DE4320544 1993-06-21

Publications (3)

Publication Number Publication Date
EP0634324A2 EP0634324A2 (en) 1995-01-18
EP0634324A3 EP0634324A3 (en) 1995-02-08
EP0634324B1 true EP0634324B1 (en) 1996-04-03

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Application Number Title Priority Date Filing Date
EP94109564A Expired - Lifetime EP0634324B1 (en) 1993-06-21 1994-06-21 System including a receptacle for filling the receptacle with a protecting gas

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EP (1) EP0634324B1 (en)
AT (1) ATE136271T1 (en)
DE (2) DE4320544C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621804A1 (en) * 1996-05-31 1997-12-04 Tack Klebeband Gmbh D Self-adhesive tape for connecting base rail or skirting board and wall
EP0836997A1 (en) 1996-09-17 1998-04-22 Kraft Foods, Inc. Apparatus and method for formation of sealed packages
CN103523271A (en) * 2013-09-30 2014-01-22 洛阳双瑞万基钛业有限公司 Vacuumizing and argon inflating device for titanium sponge finished product packaging
DE102017117733A1 (en) * 2016-09-13 2018-03-15 Liebherr-Hausgeräte Lienz Gmbh Vakuumdämmkörper

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362203A (en) * 1918-02-21 1920-12-14 Rogers Company Means for sealing containers in vacuo
GB342344A (en) * 1929-10-30 1931-01-30 John Edward Thebaud Improvements in valvular closures for bottles, jars and other containers
FR883801A (en) * 1940-10-30 1943-07-20 Process for creating a vacuum in containers and device for carrying out this process
FR917757A (en) * 1942-07-13 1947-01-21 Apparatus using vacuum for closing jars, jars, etc.
US2423358A (en) * 1944-09-21 1947-07-01 Owens Illinois Glass Co Method of packaging granular materials
GB624640A (en) * 1946-11-06 1949-06-14 Arthur Leslie Lindsell Improvements relating to the vacuum-sealing of bottles, jars and other like containers
US2576322A (en) * 1947-07-05 1951-11-27 Harry F Waters Bag with vacuum sealed valve closure
FR1264500A (en) * 1960-04-15 1961-06-23 Verriere De La Brie Et Du Buge Vacuum sealer machine
IT1033739B (en) * 1975-07-30 1979-08-10 Saleri S WATERPROOF CONTAINER FOR THE STORAGE OF VACUUM FOOD FOR DOMESTIC USE FITTED WITH MEANS FOR THE CREATION OF THE INTERNAL VACUUM
DE2636003C2 (en) * 1976-08-11 1984-03-01 Ludwig Schwerdtel GmbH, 8047 Karlsfeld Device for closing cans, each with a lid, under vacuum
DE2821852C3 (en) * 1978-05-19 1980-12-18 Zyliss Zysset Ag, Lyss (Schweiz) Device for storing perishable goods
DE3610634A1 (en) * 1986-03-29 1986-08-21 Bruno 4650 Gelsenkirchen Drosdol Preservation method for foods in the home: preserving, storing and removing the foods, and the entire apparatus for carrying out this process

Also Published As

Publication number Publication date
DE4320544C2 (en) 1996-01-25
EP0634324A2 (en) 1995-01-18
EP0634324A3 (en) 1995-02-08
DE59400181D1 (en) 1996-05-09
ATE136271T1 (en) 1996-04-15
DE4320544A1 (en) 1994-12-22

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