EP0263995B1 - Dispenser for pasty products - Google Patents

Dispenser for pasty products Download PDF

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Publication number
EP0263995B1
EP0263995B1 EP87113646A EP87113646A EP0263995B1 EP 0263995 B1 EP0263995 B1 EP 0263995B1 EP 87113646 A EP87113646 A EP 87113646A EP 87113646 A EP87113646 A EP 87113646A EP 0263995 B1 EP0263995 B1 EP 0263995B1
Authority
EP
European Patent Office
Prior art keywords
container
interior
dispenser
product
bottom wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87113646A
Other languages
German (de)
French (fr)
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EP0263995A2 (en
EP0263995A3 (en
Inventor
Willy Lorscheidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Josef Wischerath GmbH and Co KG
Original Assignee
Josef Wischerath GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Josef Wischerath GmbH and Co KG filed Critical Josef Wischerath GmbH and Co KG
Priority to AT87113646T priority Critical patent/ATE65761T1/en
Publication of EP0263995A2 publication Critical patent/EP0263995A2/en
Publication of EP0263995A3 publication Critical patent/EP0263995A3/en
Application granted granted Critical
Publication of EP0263995B1 publication Critical patent/EP0263995B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00446—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being located at the bottom of the container or of an enclosure surrounding the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0033—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container the piston being a follower-piston and the dispensing means comprising a hand-operated pressure-device at the opposite part of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps

Definitions

  • the invention relates to a dispenser for pasty products according to the preamble of claim 1.
  • Conventional dispensers for pasty products have a container with an interior for the product.
  • the container is provided with a head piece, which is usually designed as a pump element and via which the product can be removed from the container.
  • a trailing piston which, when product is removed from the interior of the container, slides along the inside wall of the container due to the pressure of the outside atmosphere, in order to avoid the formation of negative pressure in the interior of the container during product removal.
  • Such known dispensers are usually filled with the pasty product from below. After the filling process, the container is tightly closed by means of the trailing piston, which can be provided with special locking elements.
  • a dispenser for pasty masses according to the preamble of claim 1 has become known from EP-A-0 179 342.
  • a container having an interior is provided, which has a head piece designed as a pump element.
  • a trailing piston is slidably inserted in the container. This dispenser is filled from below and the trailing piston is inserted after the corresponding container space has been filled with the product.
  • US-A-4 223 808 discloses a refillable dispenser device.
  • a spring-loaded piston is provided, via which the product located in the dispenser device is pressurized. The product is removed by opening a valve element through which the pressurized product can flow out.
  • the present invention has for its object to provide a device which makes it possible to fill a dispenser for pasty products on existing filling systems without any significant conversions.
  • this object is achieved in that, before filling, the trailing piston is first arranged in the interior of the container in accordance with the nominal filling volume of the customary filling system used, so that a compensation space remains below the piston. Then the container is filled with the pasty product through the other still open end using the usual filling system, as is also done, for example, with normal cream jars. After filling, the head piece is placed on the still open end of the container, after which the dispenser is completely closed.
  • a resistance force is exerted on the trailing piston by suitable means, which can be exceeded until a predeterminable amount is exceeded counteracts an upper pressure limit in the interior of the container above the trailing piston to prevent the trailing piston from escaping into the compensation space.
  • a volume equalization takes place, so that in each case both complete filling of the container and avoidance of undesired pressing out of product through the head piece can be achieved.
  • the dispenser according to the invention can be filled, in particular, on existing filling systems, without these having to be converted to any appreciable extent. Furthermore, there is the advantage that the dispenser according to the invention can meet the prepackaging regulations of the calibration law without difficulty due to the design.
  • the design of the dispenser according to the invention has the particular advantage that filling tolerances of the filling systems can be compensated for, so that overfilling of the container does not result in undesired pressing out of the product by the head piece designed as a pump element, but only the displacement of the trailing piston in the compensation -space, so that by appropriate positioning of the trailing piston in the container interior before filling, the complete filling of the container is ensured in each case, without the said undesired pushing out of the product through the head piece in the event of a tolerance-related overfilling of the container would have to be accepted.
  • a run-up slope can be provided between the container interior and the compensation space, which results in a gradual transition between the container interior and the compensation space.
  • this ramp is accordingly frustoconical, so that there is advantageously a bump-free displacement of the trailing piston from the interior of the container into the compensation space.
  • the compensation chamber can have a smaller dimension than the container interior. If the container is designed, for example, as a circular cylinder, the corresponding smaller dimension would be the diameter of the compensation space.
  • a ready-to-use dispenser 1 is shown, which is already filled and on which all individual parts are mounted.
  • the area to the right of the center line shows a state that corresponds to a maximum filling volume, ie a filling state that exceeds the nominal volume of a filling system due to tolerances.
  • the state of the minimum or nominal filling volume is shown on the left-hand side.
  • the dispenser 1 for pasty products has a container 2 with an interior 3.
  • the container 2 is a circular cylinder and the container interior 3 has a container inner wall 4, which in the example is followed by a one-piece molded bottom wall 5, which is arranged essentially at right angles to the container inner wall 4.
  • a recess 6 extending through the entire thickness of the bottom wall 5 is also arranged in the bottom wall 5.
  • the end of the container 2 opposite the bottom wall 5 is provided with a head piece 7 designed as a pump element.
  • This head piece 7 has a housing 8 which, for example, can be provided with an external toothing 9 which can be screwed into a corresponding internal toothing of the container 2.
  • a sleeve 10 is arranged within the housing and is centered with a lower valve flap 11 is provided.
  • a pressure piston 12 is arranged concentrically within the sleeve 10, in the cylindrical central area 13 of which is provided with an internal thread or an undercut and provided with an external thread or an undercut and is only partially visible Thrust washer 15 engages.
  • This pressure plate 15 is provided at the lower end of its central region 14 with a second or upper valve flap 16. Furthermore, a compression spring, which is not visible due to the only partially broken-open representation, is provided and is arranged between the pressure disc and the inner sleeve. Finally, the head piece 7 has a closure lid 17, which can be fixed in a suitable manner on the housing 10 and covers the entire arrangement when the dispenser 1 is not actuated.
  • a trailing piston 18 is arranged in the lower region of the container 2.
  • This trailing piston 18 has a central part 19 that is designed according to the shape of the container 2, in the example of a cylindrical container 2, that is circular.
  • the trailing piston 18, as can be seen from the figure, is plate-shaped both in its upper and in its lower area, that is to say it has a circular peripheral upper edge wall 20 and a lower peripheral wall 21 on its edge area. At their outermost end regions 22 and 23, these each form the abutment or sliding surfaces on which the trailing piston 18 contacts the inner wall 4 of the container.
  • a compensation chamber 24 is provided below the piston 18 is.
  • this compensation space 24 has a smaller inner diameter than the container interior 3.
  • an in the example frusto-conical ramp 25 is provided, which creates a gradual transition between the larger inside diameter of the container interior 3 and the smaller inside diameter of the equalizing space 24.
  • the piston 18, which forms a first assembly with the container 2 is first inserted into the container interior 3 in the embodiment shown in the left area of the figure, so that the lower end area 23 the lower wall 21 of the trailing piston 18 comes to lie above the ramp 25. In this position, the trailing piston 18 defines the nominal volume of the container interior 3 forming the filling space, which is dependent on the respective filling system.
  • the container 2 is fed to the filling system, not shown in the figure, and the pasty product is, similarly to conventional cream jars, filled into the container interior 3.
  • the head piece 7, which consists of the previously described individual parts and forms a completely preassembled second assembly, is positively or positively placed on the still open end of the container 2 and thus fastened in a sealing manner.
  • the container interior 3 is vented via ventilation grooves 26 and a ventilation device 27, the pump chamber contained therein and any remaining cavities also being filled with the pasty product due to the design of the housing 10 when the head piece 7 is inserted.
  • the height of the compensation chamber 24 or the distance by which the trailing piston 18 is displaced due to an excessive pressure increase in the container interior 3 in the direction of the bottom wall 5 is set depending on the usually known filling tolerances of the respective filling system.

Abstract

The dispenser (1) for pasty products has a container (2), a top piece (7) and a following piston (18). The top piece (7) is fitted in a sealing manner on one end of the container (2) while the other end of the container (2) is closed by a fixed bottom wall (5). Provided between the following piston (18) and the bottom wall (5) of the container is a compensation space (24) so that, when the dispenser (1) is filled using customary filling systems, overfilling which would lead to an undesired pressing out of the pasty product through the top piece (7) is compensated by displacement of the following piston (18) into the compensation space (24).

Description

Die Erfindung betrifft einen Spender für pastöse Produkte nach dem Oberbegriff des Anspruches 1.The invention relates to a dispenser for pasty products according to the preamble of claim 1.

Herkömmliche Spender für pastöse Produkte weisen einen Behälter mit einem Innenraum für das Produkt auf. Der Behälter ist mit einem Kopfstück versehen, das üblicherweise als Pumpelement ausgebildet ist und über das dem Be-hälter das Produkt entnommen werden kann. Dem Kopfstück gegenüberliegend angeordnet ist ein Nachlaufkolben vorgesehen, der bei Entnahme von Produkt aus dem Behälterinneren aufgrund des Druckes der Außenatmosphäre entlang der Behälterinnenwand gleitet, um eine Unterdruckbildung im Behälterinneren bei der Produktentnahme zu vermeiden.Conventional dispensers for pasty products have a container with an interior for the product. The container is provided with a head piece, which is usually designed as a pump element and via which the product can be removed from the container. Arranged opposite the head piece is a trailing piston which, when product is removed from the interior of the container, slides along the inside wall of the container due to the pressure of the outside atmosphere, in order to avoid the formation of negative pressure in the interior of the container during product removal.

Üblicherweise werden derartige bekannte Spender von unten her mit dem pastösen Produkt befüllt. Nach dem Befüllungsvorgang wird der Behälter mittels des Nachlaufkolbens, der mit besonderen Sperrelementen versehen sein kann, dicht verschlossen.Such known dispensers are usually filled with the pasty product from below. After the filling process, the container is tightly closed by means of the trailing piston, which can be provided with special locking elements.

Hierbei ist jedoch nachteilig, daß bei den Verfahren zum Befüllen üblicher Spender spezielle Füllanlagen erforderlich sind und daß viele bekannte Spender nicht die Fertigungspackungsvorschrift des Eichgesetzes aus technischen Gründen erfüllen können.However, it is disadvantageous here that special filling systems are required in the methods for filling conventional dispensers and that many known dispensers cannot fulfill the production packaging regulation of the calibration law for technical reasons.

Ein Spender für pastöse Massen gemäß dem Oberbegriff des Anspruches 1 ist durch die EP-A-0 179 342 bekannt geworden. Bei diesem Spender ist ein einen Innenraum aufweisender Behälter vorgesehen, der ein als Pumpelement ausgebildetes Kopfstück aufweist. Im Behälter ist gleitverschieblich ein Nachlaufkolben eingesetzt. Dieser Spender wird von unten her befüllt, und der Nachlaufkolben wird eingesetzt, nachdem der entsprechende Behälterraum mit dem Produkt gefüllt ist.A dispenser for pasty masses according to the preamble of claim 1 has become known from EP-A-0 179 342. In this dispenser, a container having an interior is provided, which has a head piece designed as a pump element. A trailing piston is slidably inserted in the container. This dispenser is filled from below and the trailing piston is inserted after the corresponding container space has been filled with the product.

Mit der US-A-4 223 808 ist eine wiederbefüllbare Spendereinrichtung bekannt geworden. Bei dieser Spendereinrichtung ist ein federbelasteter Kolben vorgesehen, über den das in der Spendereinrichtung befindliche Produkt unter Druck gesetzt wird. Die Entnahme des Produktes geschieht, indem ein Ventilelement geöffnet wird, durch welches das unter Druck stehende Produkt ausströmen kann.US-A-4 223 808 discloses a refillable dispenser device. In this dispenser device, a spring-loaded piston is provided, via which the product located in the dispenser device is pressurized. The product is removed by opening a valve element through which the pressurized product can flow out.

Gegenüber diesem Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Vorrichtung zu schaffen, welche es ermöglicht, einen Spender für pastöse Produkte auf vorhandenen Füllanlagen ohne nennenswerte Umrüstungen füllen zu können.Compared to this prior art, the present invention has for its object to provide a device which makes it possible to fill a dispenser for pasty products on existing filling systems without any significant conversions.

Diese Aufgabe wird erfindungsgemäß durch den Gegenstand des Anspruches 1 gelöst.This object is achieved by the subject matter of claim 1.

Bei der im Oberbegriff des Anspruchs 1 angegebenen Vorrichtung wird diese Aufgabe dadurch gelöst, daß vor der Befüllung zunächst der Nachlaufkolben im Behälterinnenraum dem Nennfüllvolumen der verwendeten üblichen Füllanlage entsprechend angeordnet wird, so daß unterhalb des Kolbens ein Ausgleichsraum verbleibt. Danach wird der Behälter durch das andere noch offene Ende hindurch mit dem pastösen Produkt mittels der üblichen Füllanlage befüllt, wie dies beispielsweise auch bei normalen Cremetiegeln durchgeführt wird. Nach der Befüllung wird das Kopfstück auf das noch offene Ende des Behälters aufgesetzt, wonach der Spender vollständig geschlossen ist. Da die Füllanlagen üblicherweise Fülltoleranzen haben, es also zu einer Überfüllung des Behälters kommen kann, die wiederum ein unerwünschtes Herausdrücken des pastösen Produktes durch das Kopfstück zur Folge haben würde, wird auf den Nachlaufkolben durch geeignete Mittel eine Widerstandskraft ausgeübt, die bis zum Überschreiten einer vorbestimmbaren oberen Druckgrenze im Behälterinnenraum oberhalb des Nachlaufkolbens einem Ausweichen des Nachlaufkolbens in den Ausgleichsraum entgegenwirkt. Mit anderen Worten bedeutet dies, daß bei zu großer Befüllung des Behälters das Produkt aufgrund der übermäßigen Druckerhöhung beim Aufsetzen des Kopfstückes den Nachlaufkolben in den Ausgleichsraum verdrängt, so daß ein unerwünschtes Herausdrücken des Produktes durch das Kopfstück sicher vermieden wird. Es erfolgt also bei überfülltem Behälter ein Volumenausgleich, so daß in jedem falle sowohl eine vollständige Füllung des Behälters als auch Vermeidung unerwünschten Herausdrückens von Produkt durch das Kopfstück erreicht werden kann.In the device specified in the preamble of claim 1, this object is achieved in that, before filling, the trailing piston is first arranged in the interior of the container in accordance with the nominal filling volume of the customary filling system used, so that a compensation space remains below the piston. Then the container is filled with the pasty product through the other still open end using the usual filling system, as is also done, for example, with normal cream jars. After filling, the head piece is placed on the still open end of the container, after which the dispenser is completely closed. Since the filling systems usually have filling tolerances, which can lead to overfilling of the container, which in turn would result in the pasty product being pushed out undesirably by the head piece, a resistance force is exerted on the trailing piston by suitable means, which can be exceeded until a predeterminable amount is exceeded counteracts an upper pressure limit in the interior of the container above the trailing piston to prevent the trailing piston from escaping into the compensation space. In other words, this means that if the container is filled too much, the product displaces the trailing piston into the compensation space due to the excessive pressure increase when the headpiece is placed on it, so that undesired pressing out of the product by the headpiece is reliably avoided. If the container is overfilled, a volume equalization takes place, so that in each case both complete filling of the container and avoidance of undesired pressing out of product through the head piece can be achieved.

Dadurch wird vorteilhafterweise erreicht, daß der erfindungsgemäße Spender insbesondere auf vorhandenen Füllanlagen befüllt werden kann, ohne daß diese in nennerswertem Umfange umgerüstet werden müßten. Ferner ergibt sich der Vorteil, daß der erfindungsgemäße Spender konzeptionsbedingt ohne Schwierigkeiten die Fertigpackungsvorschriften des Eichgesetzes erfüllen kann.It is thereby advantageously achieved that the dispenser according to the invention can be filled, in particular, on existing filling systems, without these having to be converted to any appreciable extent. Furthermore, there is the advantage that the dispenser according to the invention can meet the prepackaging regulations of the calibration law without difficulty due to the design.

Schließlich ergibt die Ausbildung des erfindungsgemäßen Spenders den besonderen Vorteil, daß Fülltoleranzen der Füllanlagen ausgeglichen werden können, so daß eine Überfüllung des Behälters nicht ein unerwünschtes Herausdrücken des Produktes durch das als Pumpelement ausgebildete Kopfstück zur Folge hat, sondern lediglich das Verschieben des Nachlaufkolbens in den Ausgleichs-raum, so daß durch entsprechende Positionierung des Nach-laufkolbens in Behalterinnenraum vor der Befüllung in je-dem Falle die vollständige Füllung des Behälters sichergestellt ist, ohne daß dabei bei einen toleranzbedingten überfüllen des Behälters das besagte unerwünschte Heraus-drücken des Produktes durch das Kopfstück in Kauf genommen werden müßte.Finally, the design of the dispenser according to the invention has the particular advantage that filling tolerances of the filling systems can be compensated for, so that overfilling of the container does not result in undesired pressing out of the product by the head piece designed as a pump element, but only the displacement of the trailing piston in the compensation -space, so that by appropriate positioning of the trailing piston in the container interior before filling, the complete filling of the container is ensured in each case, without the said undesired pushing out of the product through the head piece in the event of a tolerance-related overfilling of the container would have to be accepted.

Bei dem erfindungsgemäßen Spender kann zwischen dem Behälterinnenraum und dem Ausgleichsraum eine Auflaufschräge vorgesehen werden, die einen allmählichen Übergang zwischen dem Behalterinnenraum und dem Ausgleichsraum ergibt. Diese Auflaufschräge ist bei der Ausbildung des Behälters als Kreiszylinder dementsprechend kegelstumpfförmig ausgebildet, so daß sich vorteilhafter-weise ein stoßfreies Verdrängen des Nachlaufkolbens vom Behälterinnenraum in den Ausgleichsraum ergibt.In the dispenser according to the invention, a run-up slope can be provided between the container interior and the compensation space, which results in a gradual transition between the container interior and the compensation space. When the container is designed as a circular cylinder, this ramp is accordingly frustoconical, so that there is advantageously a bump-free displacement of the trailing piston from the interior of the container into the compensation space.

Vorzugsweise kann zur Erzeugung der auf den Nachlaufkolben wirkenden Widerstandskraft der Ausgleichsraum eine geringere Abmessung als der Behälterinnenraum aufweisen. Ist der Behälter beispielsweise als Kreiszylinder ausgebildet, wäre also die entsprechende geringere Abmessung der Durchmesser des Ausgleichsraumes.Preferably, in order to generate the resistance force acting on the trailing piston, the compensation chamber can have a smaller dimension than the container interior. If the container is designed, for example, as a circular cylinder, the corresponding smaller dimension would be the diameter of the compensation space.

Es ist jedoch ebenfalls möglich, die gewünschte Widerstandskraft durch das Vorsehen geeigneter Federelemente zwischen der Unterseite des Nachlaufkolbens und dem Kolbenboden zu erzeugen, wobei es dann möglich ist, die Abmessungen des Behälterinnenraumes und des Ausgleichsraumes gleich groß auszulegen.However, it is also possible to generate the desired resistance force by providing suitable spring elements between the underside of the trailing piston and the piston crown, it then being possible to determine the dimensions of the container interior and the Compensation room to be designed the same size.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus nachfolgender Beschreibung eines Ausführungsbeispieles anhand der Zeichnung. Die einzige Figur der Zeichnung zeigt einen teilweise aufgebrochenen Längs-schnitt durch einen erfindungsgemäßen Spender.Further details and advantages of the invention will become apparent from the following description of an embodiment with reference to the drawing. The only figure in the drawing shows a partially broken longitudinal section through a dispenser according to the invention.

In der Figur ist ein betriebsbereiter Spender 1 dargestellt, der bereits befüllt ist und an dem sämtliche Einzelteile montiert sind. Zur Verdeutlichung der besonderen Vorteile des erfindungsgemäßen Spenders 1 zeigt der rechts der Mittellinie befindliche Bereich einen Zustand, der einem maximalen Füllvolumen entspricht also einem toleranzbedingt über das Nennvolumen einer Füllanlage hinausgehenden Füllzustand. Auf der linken Seite ist dem-gegenüber der Zustand des minimalen bzw. Nenn-Füllvolumens verdeutlicht.In the figure, a ready-to-use dispenser 1 is shown, which is already filled and on which all individual parts are mounted. To clarify the particular advantages of the dispenser 1 according to the invention, the area to the right of the center line shows a state that corresponds to a maximum filling volume, ie a filling state that exceeds the nominal volume of a filling system due to tolerances. The state of the minimum or nominal filling volume is shown on the left-hand side.

Im einzelnen weist der erfindungsgemäße Spender 1 für pastöse Produkte einen Behälter 2 mit einem Innenraum 3 auf. Der Behälter 2 ist im Beispielsfalle ein Kreiszylinder und der Behälterinnenraum 3 weist eine Behälterinnenwand 4 auf, an die sich im Beispielsfalle eine ein-stückig angeformte Bodenwand 5 anschließt, die im wesentlichen im rechten Winkel zur Behälterinnenwand 4 angeordnet. In der Bodenwand 5 ist ferner eine die gesamte Dicke der Bodenwand 5 durchgreifende Ausnehmung 6 angeordnet.In particular, the dispenser 1 according to the invention for pasty products has a container 2 with an interior 3. In the example, the container 2 is a circular cylinder and the container interior 3 has a container inner wall 4, which in the example is followed by a one-piece molded bottom wall 5, which is arranged essentially at right angles to the container inner wall 4. A recess 6 extending through the entire thickness of the bottom wall 5 is also arranged in the bottom wall 5.

Das der Bodenwand 5 gegenüberliegende Ende des Behälters 2 ist mit einem als Pumpelement ausgebildeten Kopfstück 7 versehen. Dieses Kopfstück 7 weist ein Gehäuse 8 auf, das beispielsweise mit einer Außenverzahnung 9 versehen sein kann, die in eine entsprechende Innenverzahnung des Behälters 2 eingeschraubt werden kann. Innerhalb des Gehäuses ist eine Hülse 10 angeordnet, die mittig mit einer unteren Ventilklappe 11 versehen ist. wie aus dem aufgebrochenen Bereich der Figur im einzelnen ferner ersichtlich ist, ist konzentrisch innerhalb der Hülse 10 ein Druckkolben 12 angeordnet, in dessen zylindrischen mit einem Innengewinde oder einer Hinterschneidung versehenen Mittelbereich 13 ein mit einem Außengewinde oder einer Hinterschneidung versehener Mittelbereich 14 einer nur teilweise sichtbaren Druckscheibe 15 eingreift. Diese Druckscheibe 15 ist am unteren Ende ihres Mittelbereiches 14 mit einer zweiten bzw. oberen Ventilklappe 16 versehen. Ferner ist eine aufgrund der nur teilweise aufgebrochenen Darstellung nicht sichtbare Druckfeder vorgesehen, die zwischen der Druckscheibe und der Innenhülse angeordnet ist. Schließlich weist das Kopfstück 7 einen Verschlußdeckel 17 auf, der auf geeignete Art und weise am Gehäuse 10 festgelegt werden kann und die gesamte Anordnung abdeckt, wenn der Spender 1 nicht betätigt wird.The end of the container 2 opposite the bottom wall 5 is provided with a head piece 7 designed as a pump element. This head piece 7 has a housing 8 which, for example, can be provided with an external toothing 9 which can be screwed into a corresponding internal toothing of the container 2. A sleeve 10 is arranged within the housing and is centered with a lower valve flap 11 is provided. As can also be seen in detail from the broken-open area of the figure, a pressure piston 12 is arranged concentrically within the sleeve 10, in the cylindrical central area 13 of which is provided with an internal thread or an undercut and provided with an external thread or an undercut and is only partially visible Thrust washer 15 engages. This pressure plate 15 is provided at the lower end of its central region 14 with a second or upper valve flap 16. Furthermore, a compression spring, which is not visible due to the only partially broken-open representation, is provided and is arranged between the pressure disc and the inner sleeve. Finally, the head piece 7 has a closure lid 17, which can be fixed in a suitable manner on the housing 10 and covers the entire arrangement when the dispenser 1 is not actuated.

Wie ferner aus der Figur ersichtlich ist, ist im unteren Bereich des Behälters 2 ein Nachlaufkolben 18 angeordnet. Dieser Nachlaufkolben 18 weist ein Mittelteil 19 auf, daß entsprechend der Form des Behälters 2 ausgebildet ist, im Beispielsfalle eines zylinderförmigen Behälters 2 also kreisförmig. Der Nachlaufkolben 18 ist, wie aus der Figur ersichtlich, sowohl in seinem oberen wie auch in seinem unteren Bereich tellerförmig ausgebildet, weist also an seinem Randbereich eine kreisförmig umlaufende obere Randwandung 20 und eine untere Randwandung 21 auf. Diese bilden jeweils an ihren am weitesten nach außen reichenden Endbereichen 22 bzw. 23 die Anlage- bzw. Gleitflächen, an denen der Nachlaufkolben 18 die Behälterinnenwand 4 berührt.As can also be seen from the figure, a trailing piston 18 is arranged in the lower region of the container 2. This trailing piston 18 has a central part 19 that is designed according to the shape of the container 2, in the example of a cylindrical container 2, that is circular. The trailing piston 18, as can be seen from the figure, is plate-shaped both in its upper and in its lower area, that is to say it has a circular peripheral upper edge wall 20 and a lower peripheral wall 21 on its edge area. At their outermost end regions 22 and 23, these each form the abutment or sliding surfaces on which the trailing piston 18 contacts the inner wall 4 of the container.

Ferner wird insbesondere aus den linken Bereich des in der Figur dargestellten Spenders 1 deutlich, daß unterhalb des Kolbens 18 ein Ausgleichsraum 24 vorgesehen ist. Im Beispielsfalle weist dieser Ausgleichsraum 24 einen geringeren Innendurchmesser als der Behälterinnen-raum 3 auf. Zwischen den Ausgleichsraum 24 und dem Behälterinnenraum 3 ist eine im Beispielsfalle kegelstumpfförmig ausgebildete Auflaufschräge 25 vorgesehen, die einen allmählichen Übergang zwischen dem größeren Innendurchmesser des Behälterinnenraums 3 und dem kleineren Innendurchmesser des Ausgleichsraumes 24 schafft.Furthermore, it is clear in particular from the left area of the dispenser 1 shown in the figure that a compensation chamber 24 is provided below the piston 18 is. In the example, this compensation space 24 has a smaller inner diameter than the container interior 3. Between the equalizing space 24 and the container interior 3, an in the example frusto-conical ramp 25 is provided, which creates a gradual transition between the larger inside diameter of the container interior 3 and the smaller inside diameter of the equalizing space 24.

Soll der erfindungsgemäße Spender 1 gemäß dem erfindungsgemäßen Verfahren befüllt werden, wird zunächst der Kolben 18, der mit dem Behälter 2 eine erste Baugruppe bildet, bei der dargestellten Ausführungsform gemäß dem linken Bereich der Figur in den Behälterinnenraum 3 eingesetzt, so daß der untere Endbereich 23 der unteren wandung 21 des Nachlaufkolbens 18 oberhalb der Auflaufschräge 25 zu liegen kommt. In dieser Stellung definiert der Nachlaufkolben 18 das von der jeweiligen Füllanlage abhängige Nennvolumen des den Füllraum bildenden Behälterinnenraums 3.If the dispenser 1 according to the invention is to be filled according to the method according to the invention, the piston 18, which forms a first assembly with the container 2, is first inserted into the container interior 3 in the embodiment shown in the left area of the figure, so that the lower end area 23 the lower wall 21 of the trailing piston 18 comes to lie above the ramp 25. In this position, the trailing piston 18 defines the nominal volume of the container interior 3 forming the filling space, which is dependent on the respective filling system.

Danach wird der Behälter 2 der in der Figur nicht näher dargestellten Füllanlage zugeführt und das pastöse Produkt wird, ähnlich wie bei üblichen Cremetiegeln, in den Behälterinnenraum 3 eingefüllt. Ist der Füllvorgang beendet, wird das eine fertig vormontierte zweite Baugruppe bildende Kopfstück 7, das aus den zuvor beschriebenen Einzelteilen besteht, kraft- oder formschlüssig auf das noch offene Ende des Behälters 2 aufgesetzt und somit an diesen abdichtend befestigt. während dieses Einsetzens wird der Behälterinnenraum 3 über Lüftungsnuten 26 und eine Lüftungseinrichtung 27 entlüftet, wobei sich ferner durch die Gestaltung des Gehäuses 10 beim Einsetzen des Kopfstückes 7 die in diesem enthaltene Pumpkammer und sämtliche verbleibende Hohlräume mit dem pastösen Produkt füllen.Thereafter, the container 2 is fed to the filling system, not shown in the figure, and the pasty product is, similarly to conventional cream jars, filled into the container interior 3. When the filling process has ended, the head piece 7, which consists of the previously described individual parts and forms a completely preassembled second assembly, is positively or positively placed on the still open end of the container 2 and thus fastened in a sealing manner. during this insertion, the container interior 3 is vented via ventilation grooves 26 and a ventilation device 27, the pump chamber contained therein and any remaining cavities also being filled with the pasty product due to the design of the housing 10 when the head piece 7 is inserted.

Sollte beim Einsetzen des kopfstückes 7 eine durch eine toleranzbedingte Überfüllung des Behälterinnenraumes 3 übermäßige Druckerhöhung in diesem auftreten, bewirken die resultierenden auf den Nachlaufkolben 18 wirkenden Druckkräfte eine Verschiebung des Nachlaufkolbens 18 entgegen der im Beispielsfalle durch den verminderten Durchmesser des Ausgleichsraumes 24 erzeugten Widerstandskräfte in den Ausgleichsraum 24, so daß ein Volumenaus-gleich durch diese Verdrängung des Nachlaufkolbens 18 in Richtung auf die Bodenwand 5 geschaffen wird. Die entsprechende Stellung des Nachlaufkolbens 18 ist in der rechten Hälfte der Figur verdeutlicht.If, when inserting the head piece 7, an excessive pressure increase occurs in the container interior 3 due to a tolerance-related overfilling, the resulting pressure forces acting on the trailing piston 18 cause the trailing piston 18 to be displaced into the compensating space counter to the resistance forces generated in the example by the reduced diameter of the compensating space 24 24, so that a volume equalization is created by this displacement of the trailing piston 18 in the direction of the bottom wall 5. The corresponding position of the trailing piston 18 is illustrated in the right half of the figure.

Eine alternative Ausbildungsmöglichkeit ergibt sich bei-spielsweise, wenn der Nachlaufkolben 18 durch geeignete Federelemente belastet ist, die zwischen seiner Unterseite und der Bodenwand 5 des Behälters 2 angeordnet wer-den können. In einem solchen Falle kann auf eine verringerte Abmessung des Ausgleichsraumes 24 gegenüber dem Innenraum 3 verzichtet werden.An alternative training possibility arises, for example, if the trailing piston 18 is loaded by suitable spring elements which can be arranged between its underside and the bottom wall 5 of the container 2. In such a case, a reduced dimension of the compensation space 24 compared to the interior 3 can be dispensed with.

Unabhängig von der Wahl dieser Ausführungen wird die Höhe des Ausgleichsraumes 24 bzw. die Wegstrecke, um die der Nachlaufkolben 18 aufgrund einer übermäßigen Druckerhöhung im Behälterinnenraum 3 in Richtung auf die Bodenwand 5 verdrängt wird, in Abhängigkeit von den üblicherweise bekannten Fülltoleranzen der jeweiligen Füllanlage eingestellt.Regardless of the choice of these designs, the height of the compensation chamber 24 or the distance by which the trailing piston 18 is displaced due to an excessive pressure increase in the container interior 3 in the direction of the bottom wall 5 is set depending on the usually known filling tolerances of the respective filling system.

Claims (2)

  1. A dispenser for pasty products comprising a container (2) for the product, said container having an interior (3) and a top part (7) constructed as a pump element and fitted to a first end of the container (2), comprising a follower plunger (18) which is inserted into the container (2) and is guided therein in sealing-tight relationship and slidingly along the container inner wall (4) under the pressure of the outside atmosphere, the container (2) having a rigid bottom wall (5), characterised in that a compensating chamber (24) is provided between the bottom wall (5) and the follower plunger (18) and in that in the event of a predeterminable pressure limit in the interior (3) of the container being exceeded after it has been filled with the product the follower plunger (18) is displaceable into the compensating chamber (24) against a resistance force which counteracts the pressure force exerted by the product on the follower plunger (18), such resistance force being produced either by the container interior (3) having a guide chamfer (25) extending towards the interior of the container or by spring elements disposed between the underside of the following plunger (18) and the bottom wall (5).
  2. A dispenser according to claim 1, characterised in that the compensating chamber (24) is of smaller dimensions that the container interior (3).
EP87113646A 1986-10-13 1987-09-17 Dispenser for pasty products Expired - Lifetime EP0263995B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87113646T ATE65761T1 (en) 1986-10-13 1987-09-17 DISPENSER FOR PASTOESE PRODUCTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3634878 1986-10-13
DE19863634878 DE3634878A1 (en) 1986-10-13 1986-10-13 METHOD FOR FILLING A DISPENSER WITH PASTOESE PRODUCTS AND DISPENSER FOR PASTOESE PRODUCTS

Publications (3)

Publication Number Publication Date
EP0263995A2 EP0263995A2 (en) 1988-04-20
EP0263995A3 EP0263995A3 (en) 1989-01-18
EP0263995B1 true EP0263995B1 (en) 1991-07-31

Family

ID=6311645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113646A Expired - Lifetime EP0263995B1 (en) 1986-10-13 1987-09-17 Dispenser for pasty products

Country Status (5)

Country Link
EP (1) EP0263995B1 (en)
AT (1) ATE65761T1 (en)
DE (2) DE3634878A1 (en)
ES (1) ES2023650B3 (en)
GR (1) GR3002406T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19741957A1 (en) 1997-09-23 1999-03-25 Wischerath Josef Gmbh Co Kg Container with closure, filled with pharmaceutical paste or fluid
DE102005019969B3 (en) * 2005-04-27 2006-05-11 Steven Padar Method for producing a filled dosing pump unit involves ejection of gases from the foil bag in the container by compression of the bag by a pressurized medium introduced into the container
FR2956098B1 (en) * 2010-02-11 2012-03-30 Airlessystems FLUID PRODUCT DISPENSER.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223808A (en) * 1978-07-21 1980-09-23 Spray Safe Company, Inc. Refillable dispensing device having wiper seal
IT1137655B (en) * 1981-04-07 1986-09-10 Coster Tecnologie Speciali Spa DEVICE FOR DISPENSING PASTA, CREAM, DENSE LIQUIDS
DE3438579A1 (en) * 1984-10-20 1986-04-30 Bramlage Gmbh, 2842 Lohne MEASURE DONOR FOR PASTOESE

Also Published As

Publication number Publication date
EP0263995A2 (en) 1988-04-20
ATE65761T1 (en) 1991-08-15
DE3771823D1 (en) 1991-09-05
ES2023650B3 (en) 1992-02-01
GR3002406T3 (en) 1992-12-30
EP0263995A3 (en) 1989-01-18
DE3634878A1 (en) 1988-04-14

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