EP1084067B1 - Multi-refillable spray can, device for filling said cans and method for producing said spray cans - Google Patents

Multi-refillable spray can, device for filling said cans and method for producing said spray cans Download PDF

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Publication number
EP1084067B1
EP1084067B1 EP98936090A EP98936090A EP1084067B1 EP 1084067 B1 EP1084067 B1 EP 1084067B1 EP 98936090 A EP98936090 A EP 98936090A EP 98936090 A EP98936090 A EP 98936090A EP 1084067 B1 EP1084067 B1 EP 1084067B1
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EP
European Patent Office
Prior art keywords
piston
valve
spray
filling
filler
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
EP98936090A
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German (de)
French (fr)
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EP1084067A1 (en
Inventor
Hermann Runge
Manfred Stadler
Werner Massen
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EBB Ingenieurgeschellschaft
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EBB Ingenieurgeschellschaft
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Publication of EP1084067A1 publication Critical patent/EP1084067A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/42—Filling or charging means
    • B65D83/425—Delivery valves permitting filling or charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0838—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of 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
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/60—Contents and propellant separated
    • B65D83/64—Contents and propellant separated by piston

Definitions

  • the invention relates to repeatedly refillable spray cans with a cylindrical Body and tapered neck part, which by a spray valve Valve plate is closed, filled into the can under pressure using the spray becomes.
  • the invention further relates to a device for filling and a method for making such cans.
  • Spray cans in disposable or disposable design are very common and serve for the absorption of various spray liquids.
  • the disadvantage of such cans is that they must be disposed of after being emptied, with one large number of these disposable cans, the propellant gas filling is environmentally harmful.
  • Reusable cans are also known which have a stable and heavy metal body have and which are designed for very high pressures.
  • the fittings of such Spray cans are usually made of solid brass and are complex, so that due to the high production costs, the consumer often lacks the incentive to change from a disposable can to an expensive reusable can.
  • Reusable cans are acceptable in terms of expenditure, is economical Use in the way that the empty cans are collected, transported to a filling station, filled there by filling systems and transported back to the customer must, which is associated with a considerable cost and time, so that overall, the operation of such reusable cans is not, or hardly, at all is competitive.
  • EP 0 078 936 B1 describes a pressure can for dispensing assembly foams, consisting of a foaming agent and a propellant known.
  • the can includes an inverted bottom, a dome-like upper part with a closure for deployment of the foaming agent through a valve and a cylinder, in the cylinder wall flying piston is provided.
  • the foaming agent filling is through Piston top, an upper cylinder length, the dome and the closure enclosed.
  • the propellant is in one of the piston, a lower cylinder length and the can bottom arranged propellant gas space arranged.
  • the can bottom takes a one-way valve on.
  • the piston floats on the propellant gas filling.
  • the foaming agent receiving space has a closure with a rubber seal of a valve.
  • the valve body is tubular and has a valve disk at the inner end closed, which lies on the internal pressure against the rubber seal. Will the If the valve body tilts and the valve disk is lifted, the contents of the can appear through one or more openings to the outside.
  • the blowing agent is over from below a radial opening and the valve inserted.
  • a cap is provided on the valve insert (inner seal) as an outer seal. The cap is given an annular rubber seal.
  • blowing agent used in such a pressure can in the form of a propellant is an environmentally harmful propellant gas conventionally used in this technique that with such a can the problems encountered with conventional propellants cannot be eliminated. Furthermore, the can is not for refilling designed so that those occurring with the disposal of such cans Problems cannot be solved.
  • a pressure can with a foil bag which consists of a cylindrical container with a bottom part and a head part with a valve. In the lower area, a foil bag is arranged below a piston.
  • the foil bag contains the propellant.
  • This propellant gas is enclosed in a solid or liquid state in a diffusion-tight manner in the film bag and is, for example, CO 2 .
  • the piston can be a lamella piston in the manner of a labyrinth seal, the lamellae being filled with sealing or sealing liquid. However, it can also be sealed against the can wall using an O-ring seal.
  • Such a pressure cell also works with non-environmentally compatible propellant gas and cannot be refilled.
  • the object of the invention is a spray can designed as a monoblock can
  • spray can also includes can-like in the context of the present invention or bottle-like spray containers, so that in the description below and in the claims are spoken only of "cans") of the generic type, that it can be refilled repeatedly and in an empty state at any time ready to fill, i.e. can be filled with filler that a propellant is used at any time and is available at low cost, and it is environmentally friendly and non-flammable is.
  • Another object of the invention is a device and a method for the first time and continuously filling these cans in a particularly simple manner create the possibility of individual filling, especially for individual bottlers to give such cans.
  • this object is achieved in that in the cylindrical part a piston is arranged inside the can, which is assigned to the inside wall of the can Seals, the space formed below the piston with compressed air which is filled by the top of the piston, the bottom of the valve plate and the upper inner wall of the can formed space contains the fluid to be sprayed, the Spray valve is integrated in the valve plate base, and a rubber valve in the piston on the the upper side facing the fluid to be sprayed is arranged.
  • Such a spray can is preferably made by a method according to claim 7 manufactured.
  • a device for filling such spray cans is according to the features of claim 8 executed. Further refinements of the invention are the subject of subclaims.
  • the piston assembly is inserted into the spray can before the head or neck of the can is formed, which is arranged so as to be movable and movable in the can is, and its position by the pressure of acting as a blowing agent Compressed air and the back pressure of the spray in the form of the filling medium determined is.
  • the space between the piston and the can bottom is closed.
  • This space is provided with a valve on the top of the piston is arranged. Is this room filled with compressed air when activated for the first time the can is closed, the valve opening is closed and remains closed, so that the space between the piston and valve plate is filled with the filling medium becomes.
  • the pressure ratio selected on both sides of the pressure piston so that the piston is approximately in the middle is set in relation to the can height and the air pressure is sufficiently high is that even when the can is almost empty, i.e. when the can filling is almost spraying the rest can be sprayed with sufficient pressure.
  • the piston within the can is designed so that a circumferential direction on its underside of the piston skirt provided an annular sealing lip is directed downwards and outwards, so that due to the pressure exerted by the Compressed air is exerted upwards on the piston, the sealing lip spreads and so that the sealing effect on the inner jacket of the can is strengthened.
  • a corresponding annular sealing lip is spaced from this sealing lip provided that runs upwards and outwards and that due to the Pressure effect of the spray between the valve disc and piston spread outwards which results in an increased seal on the inner wall of the can so that it is ensured that spray does not pass the piston even under pressure can flow down.
  • the inner wall of the can and / or the peripheral surface of the piston especially in the area of the sealing lips with a layer of sealing material, e.g. Provided with Teflon; furthermore are the sealing lips preferably designed as an elongated lip seal to achieve the sealing effect to improve.
  • the piston points in the upper, facing the valve plate Area a shape that corresponds to the inside of the can's neck and is curved at the top and in the inner area according to the shape of the valve plate is cup-shaped, so that the valve plate with spray valve in this cup shape can be included.
  • the piston is preferably hollow and has stiffeners, namely an inner cylindrical hub and from this hub web-shaped walls running radially to the outer jacket. It usually exists made of plastic, but can also be made of metal, the sealing lips can also consist of plastic in the case of a plastic version or are optionally designed as rubber seals, as is the case for a metal version true.
  • the cans are filled with a device that has a frame on its The refill can or bottle is placed in a defined position.
  • the frame has a particularly electro-hydraulically driven above the can Piston with a cylindrical vessel that contains the one to be placed in the refill can Filling quantity contains, as well as a filling needle at the lower end, which the spray valve of the socket underneath is assigned exactly and which is activated when the electrohydraulic filling piston presses against the spray valve and this for filling opens.
  • the filling material is taken from a storage container via a suction line introduced into the filling container in which the filling piston is arranged, with each dispensed volume of spray is the exact amount that goes into the refill to be filled in during a filling.
  • a check and pressure relief valve is provided, which is designed so that during a filling movement of the piston, the filling liquid does not enter the suction line, but is only introduced into the refill can, and further so that with a corresponding The refill can cannot be overfilled.
  • the refill can is in the form of a seamless or a monoblock can or Bottle made of aluminum or plastic. So that the weight can be low being held.
  • the agent to be sprayed can be any fluid, for example in the form technical liquids, such as lubricating oils etc., spray agents, such as those used for hair care be used, high or low viscosity creams, foams (with less Pressure) and the like.
  • the spray can or Spray bottle can be refilled any number of times that when refilling the spray Refilling the propellant completely eliminates the use of air as the propellant that is available everywhere and free of charge that the can or bottle is environmentally friendly is because on the one hand it can be filled repeatedly and on the other hand as Blowing air is used that is completely harmless, so that the filling costs are crucial can be reduced, and that an air connection for filling a propellant in a filling station using conventional methods.
  • individual fillers, spray cans or spray bottles themselves and to be repeatedly filled individually on the spot so that e.g. in a hair salon empty spray cans easily, quickly and inexpensively refilled and so that can be used repeatedly. Because the bottle only after Inserting the piston is flared, it can not be seen from the outside that it is is a spray bottle. which are different from conventional spray bottles different.
  • Another, decisive advantage of the invention results from the fact that the Compressed air-filled space of the can, which is completely closed in the floor area below of the piston filled unchanged during the entire service life of the can remains, so that the compressed air once filled in and thus also the one used for this Energy is retained while the fluid to be sprayed is released after dispensing the spray can is refilled again and again. If the spray can is disposed of, it flows Compressed air outside and is free from the surrounding atmosphere without any harmful Environmental impact added.
  • a filling container 6 On a frame 1 with a vertical stand 2 and a base plate 3 are a upper arm 4 and a lower arm 5 attached, between which a filling container 6 is arranged for receiving the material to be filled.
  • the container receives a piston 7.
  • a hand lever (dashed) is indicated, which instead of a piston drive can alternatively be used for a hand-held device.
  • the filling volume of the container 6 is in accordance with the batch to be dispensed Designed spray.
  • Fig. 1 shows with 7 the upper position of the piston, the electro-hydraulic can be driven, and with 8 its lower piston position.
  • the electro-hydraulic can be driven, and with 8 its lower piston position.
  • At the a filling needle 9 is attached, with the help of which the Transfer of the spray is made.
  • the spray is made from a (not shown), e.g.
  • a supply container via an intake line 10 and a check and pressure relief valve 11 connected to the lower end of the container 6, so that in preparation for a filling process the container 6 below the in piston 7 located in its upper position is completely filled. That volume of spraying agent is placed in the refill box 12 placed on the base plate 3 the pressure effect of the piston 7 is filled.
  • the can 12 has a bottom 13, which is locked on the base plate 3 so that the central axis 14 of the can 12 with the Central axis 15 of the filling piston 7 coincides.
  • the applied pressure is on the respective materials to be filled and the cans to be filled are adjustable.
  • the required filling quantity can be checked in advance
  • the flask is temporarily stored and then introduced into the can in portions. In order to can be any tin cans, bottles, aluminum pressure vessels and. the like. easily and fill in a particularly simple manner.
  • a can piston 16 (preferably made of plastic) is arranged in the refill can 12, has the circular cross section and the sealing along the cylindrical Part of the inner circumference of the can 12 is movable in the axial direction 14. He has one annular section 17, the outer periphery of which has a circumferential seal.
  • the can neck 18 of the can 12 is dome-like to the inside of an opening of the can shaped, which has a valve plate 19 which closes the can opening.
  • a spray valve 20 is arranged in the form of a mother valve.
  • At 21 is denotes the upper deep-drawn piston rim of the piston 16, which has an opening 22 for receiving a valve 23 which may be of conventional design can, e.g.
  • the Ring seal 17 of the piston 16 has, as shown in Fig. 2, a lower annular Lip seal 24, the lip of which is directed downwards and outwards and through the compressed air filling 26, which exerts a pressure in the can space, to the outside spread and thus pressed into reinforced contact with the inner surface of the refill 12 becomes. Accordingly, the piston 16 has an upper lip seal 25 which is directed upwards and outwards and by the pressure of the spray 27 over the piston 16 is pressed down and out, so that this lip seal comes under pressure on the inner surface of the refill can 12.
  • the piston 16 within the refill can 12 is hollow and has stiffening, radially extending web walls and a cylindrical or hub-shaped part both of which are not shown. This gives the piston high rigidity and low weight at the same time.
  • FIG. 2 shows the monoblock box 30 in its initial state; their inner rim is seamless and has a Teflon coating 28.
  • the tubular Cylinder 30 with integrated bottom 31 is open at the upper end 32, so that the piston 16 can be inserted into the cylinder (as shown in Fig. 3).
  • the head portion of the cylinder 30 (as in Fig. 4) formed into a dome 33 with an opening 34, the peripheral edge is flanged at 35.
  • the can 30 is then compressed air over a filling needle 36 filled, which is filled through the valve 23 in the cylinder.
  • the valve 23 is e.g.
  • valve plate 37 with valve 38 corresponds to the valve plate 19 with valve 20 of FIG. 1 and with the flanged peripheral edge 35 the can clinks. So that the space between the valve plate 37 and piston top fixed and sealed. Via a filling mandrel 39 of a fluid filling device 40 the spray is introduced into this spray chamber 41 and due to the applied pressure, the piston 16 is down against the pressure effect of the Compressed air filling pressed.
  • the valve 38 which is integrated in the valve plate 37, is a spray valve without stem, which receives a compression spring 43 in a housing 42.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Vacuum Packaging (AREA)
  • Nozzles (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

A multi-refillable spray can with a piston arranged in the cylindrical part of the interior of said can, whereby said piston has seals associated with the inner wall thereof. The area below the piston is filled with compressed air instead of the usual environmentally damaging propellant gases. The spray is accommodated in the area formed by the upper side of the piston, the lower side of the valve head and the upper inner wall of the can. The piston has a rubber valve on the upper side facing the spray, whereby the bottom of the can is fully closed.

Description

Die Erfindung bezieht sich auf wiederholt nachfüllbare Spraydosen mit zylindrischem Körper und sich verjüngendem Halsteil, der durch einen ein Sprühventil aufnehmenden Ventilteller verschlossen ist, über das Sprühmittel unter Druck in die Dose eingefüllt wird. Ferner betrifft die Erfindung eine Einrichtung zum Befüllen sowie ein Verfahren zum Herstellen derartiger Dosen.The invention relates to repeatedly refillable spray cans with a cylindrical Body and tapered neck part, which by a spray valve Valve plate is closed, filled into the can under pressure using the spray becomes. The invention further relates to a device for filling and a method for making such cans.

Spraydosen in Einweg- oder Einmal-Ausführung sind sehr weit verbreitet und dienen zur Aufnahme unterschiedlichster Sprühflüssigkeiten. Der Nachteil derartiger Dosen besteht darin, daß sie nach ihrem Entleeren entsorgt werden müssen, wobei bei einer großen Anzahl dieser Wegwerfdosen die Treibgasfüllung umweltschädlich ist.Spray cans in disposable or disposable design are very common and serve for the absorption of various spray liquids. The disadvantage of such cans is that they must be disposed of after being emptied, with one large number of these disposable cans, the propellant gas filling is environmentally harmful.

Des weiteren sind Mehrweg-Dosen bekannt, die einen stabilen und schweren Metallkörper haben und die für sehr hohe Drücke ausgelegt sind. Die Armaturen derartiger Spraydosen sind in der Regel aus massivem Messing hergestellt und aufwendig, so daß aufgrund der hohen Gestehungskosten beim Verbraucher häufig der Anreiz fehlt, von einer Einweg-Dose auf eine teuere Mehrweg-Dose überzugehen. Soweit derartige Mehrweg-Dosen jedoch vom Aufwand her akzeptabel sind, steht einem wirtschaftlichen Einsatz im Wege, daß die leeren Dosen gesammelt, an eine Befüllstation transportiert, dort durch Befüllanlagen befüllt und zum Kunden zurücktransportiert werden müssen, was mit einem erheblichen Kosten- und Zeitaufwand verbunden ist, so daß insgesamt gerechnet auch der Betrieb derartiger Mehrweg-Dosen nicht oder kaum konkurrenzfähig ist. Dafür ist neben den Transportkosten vor allen Dingen auch verantwortlich, daß derartige Mehrweg-Dosen nach dem Befüllen mit dem Sprühmittel auch jedes Mal mit Treibgas gefüllt werden müssen, was, da die Drücke des Fluids und des Treibgases innerhalb der Dose aufeinander abgestimmt werden müssen, nur bei größeren Anlagen einwandfrei und rentabel durchgeführt werden kann. Reusable cans are also known which have a stable and heavy metal body have and which are designed for very high pressures. The fittings of such Spray cans are usually made of solid brass and are complex, so that due to the high production costs, the consumer often lacks the incentive to change from a disposable can to an expensive reusable can. As far as such Reusable cans, however, are acceptable in terms of expenditure, is economical Use in the way that the empty cans are collected, transported to a filling station, filled there by filling systems and transported back to the customer must, which is associated with a considerable cost and time, so that overall, the operation of such reusable cans is not, or hardly, at all is competitive. In addition to the transport costs, this is primarily responsible for that such reusable cans after filling with the spray also need to be filled with propellant every time what, since the pressures of the fluid and of the propellant gas within the can must be coordinated, only at larger plants can be carried out flawlessly and profitably.

Aus der EP 0 078 936 B1 ist eine Druckdose zum Ausbringen von Montageschäumen, bestehend aus einem Schaumbildner und einem Treibgas bekannt. Die Dose umfaßt einen eingestülpten Boden, ein domartiges Oberteil mit Verschluß zum Ausbringen des Schaumbildners durch ein Ventil und einen Zylinder, in dessen Zylinderwand ein fliegend angeordneter Kolben vorgesehen ist. Die Schaumbildner-Füllung ist durch die Kolbenoberseite, eine obere Zylinderlänge, den Dom und den Verschluß umschlossen. Das Treibmittel ist in einem vom Kolben, einer unteren Zylinderlänge und dem Dosenboden gebildeten Treibgasraum angeordnet. Der Dosenboden nimmt ein Einwegventil auf. Der Kolben schwimmt auf der Treibgasfüllung. Der den Schaumbildner aufnehmende Raum weist einen Verschluß mit Gummidichtung eines Ventils auf. Der Ventilkörper ist rohrförmig ausgebildet und am inneren Ende mit einem Ventilteller verschlossen, der sich über den Innendruck gegen die Gummidichtung legt. Wird der Ventilkörper verkippt und dadurch der Ventilteller abgehoben, tritt der Doseninhalt über eine oder mehrere Öffnungen nach außen. Das Treibmittel wird von unten über eine radiale Öffnung und das Ventil eingeführt. Zur Verbesserung einer Abdichtung am Ventileinsatz (innere Abdichtung) wird eine Kappe als äußere Abdichtung vorgesehen. Die Kappe erhält eine ringförmige Gummidichtung.EP 0 078 936 B1 describes a pressure can for dispensing assembly foams, consisting of a foaming agent and a propellant known. The can includes an inverted bottom, a dome-like upper part with a closure for deployment of the foaming agent through a valve and a cylinder, in the cylinder wall flying piston is provided. The foaming agent filling is through Piston top, an upper cylinder length, the dome and the closure enclosed. The propellant is in one of the piston, a lower cylinder length and the can bottom arranged propellant gas space arranged. The can bottom takes a one-way valve on. The piston floats on the propellant gas filling. The foaming agent receiving space has a closure with a rubber seal of a valve. The The valve body is tubular and has a valve disk at the inner end closed, which lies on the internal pressure against the rubber seal. Will the If the valve body tilts and the valve disk is lifted, the contents of the can appear through one or more openings to the outside. The blowing agent is over from below a radial opening and the valve inserted. To improve a seal A cap is provided on the valve insert (inner seal) as an outer seal. The cap is given an annular rubber seal.

Das bei einer derartigen Druckdose verwendete Treibmittel in Form eines Treibgases ist ein in dieser Technik herkömmlich verwendetes umweltschädliches Treibgas, so daß mit einer derartigen Dose die bei herkömmlichen Treibgasen auftretenden Probleme nicht beseitigt werden können. Des weiteren ist die Dose nicht für eine Wiederbefüllung ausgelegt, so daß damit die mit der Entsorgung derartiger Dosen auftretenden Probleme nicht gelöst werden.The blowing agent used in such a pressure can in the form of a propellant is an environmentally harmful propellant gas conventionally used in this technique that with such a can the problems encountered with conventional propellants cannot be eliminated. Furthermore, the can is not for refilling designed so that those occurring with the disposal of such cans Problems cannot be solved.

Aus dem DE-U- 90 06 569.7 ist eine Druckdose mit Folienbeutel bekannt, die aus einem zylindrischen Behälter mit Bodenteil und Kopfteil mit Ventil besteht. Im unteren Bereich ist ein Folienbeutel unterhalb eines Kolbens angeordnet. Der Folienbeutel enthält das Treibgas. Dieses Treibgas ist in festem oder flüssigem Aggregatzustand im Folienbeutel diffusionsdicht eingeschlossen und ist beispielsweise CO2. Der Kolben kann ein Lamellenkolben nach Art einer Labyrinthdichtung sein, wobei die Lamellen mit Dicht- oder Sperrflüssigkeit gefüllt sind. Er kann jedoch auch über eine O-Ring-Dichtung gegen die Dosenwand abgedichtet werden. Eine derartige Druckdose arbeitet ebenfalls mit nicht umweltverträglichem Treibgas, und ist nicht wiederbefüllbar.From DE-U-90 06 569.7 a pressure can with a foil bag is known, which consists of a cylindrical container with a bottom part and a head part with a valve. In the lower area, a foil bag is arranged below a piston. The foil bag contains the propellant. This propellant gas is enclosed in a solid or liquid state in a diffusion-tight manner in the film bag and is, for example, CO 2 . The piston can be a lamella piston in the manner of a labyrinth seal, the lamellae being filled with sealing or sealing liquid. However, it can also be sealed against the can wall using an O-ring seal. Such a pressure cell also works with non-environmentally compatible propellant gas and cannot be refilled.

Aufgabe der Erfindung ist es, eine als Monoblockdose ausgebildete Spraydose (der Ausdruck "Spraydose" umfaßt im Rahmen vorliegender Erfindung auch dosenartige oder flaschenartige Spraybehälter, sodaß in der nachstehenden Beschreibung und in den Ansprüchen nur von "Dosen" gesprochen wird) der gattungsgemäßen Art so auszugestalten, daß sie wiederholt nachfüllbar ist und in entleertem Zustand jederzeit füllbereit, d.h. mit Füllmittel befüllbar ist, daß ein Treibmittel verwendet wird, das jederzeit und kostengünstig verfügbar ist, und das umweltfreundlich sowie nicht brennbar ist.The object of the invention is a spray can designed as a monoblock can The term "spray can" also includes can-like in the context of the present invention or bottle-like spray containers, so that in the description below and in the claims are spoken only of "cans") of the generic type, that it can be refilled repeatedly and in an empty state at any time ready to fill, i.e. can be filled with filler that a propellant is used at any time and is available at low cost, and it is environmentally friendly and non-flammable is.

Des weiteren ist Aufgabe der Erfindung, eine Einrichtung und ein Verfahren zum erstmaligen und fortlaufenden Befüllen dieser Dosen auf besonders einfache Weise zu schaffen, insbesondere für Einzelabfüller die Möglichkeit der individuellen Befüllung solcher Dosen zu geben.Another object of the invention is a device and a method for the first time and continuously filling these cans in a particularly simple manner create the possibility of individual filling, especially for individual bottlers to give such cans.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß im zylindrischen Teil des Doseninneren ein Kolben angeordnet ist, der der Doseninnenwand zugeordnete Abdichtungen aufweist, der unterhalb des Kolbens ausgebildete Raum mit Druckluft gefüllt ist, der durch die Oberseite des Kolbens, die Unterseite des Ventiltellers und die obere Innenwand der Dose ausgebildete Raum das zu versprühende Fluid enthält, das Sprühventil im Ventiltellerboden integriert ist, und ein Gummiventil im Kolben auf der dem zu versprühenden Fluid zugewandten Oberseite angeordnet ist. According to the invention, this object is achieved in that in the cylindrical part a piston is arranged inside the can, which is assigned to the inside wall of the can Seals, the space formed below the piston with compressed air which is filled by the top of the piston, the bottom of the valve plate and the upper inner wall of the can formed space contains the fluid to be sprayed, the Spray valve is integrated in the valve plate base, and a rubber valve in the piston on the the upper side facing the fluid to be sprayed is arranged.

Eine derartige Spraydose wird vorzugsweise nach einem Verfahren nach Anspruch 7 hergestellt. Eine Einrichtung zum Befüllen derartiger Spraydosen ist nach den Merkmalen des Anspruches 8 ausgeführt. Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Such a spray can is preferably made by a method according to claim 7 manufactured. A device for filling such spray cans is according to the features of claim 8 executed. Further refinements of the invention are the subject of subclaims.

Gemäß der Erfindung wird die Kolbenanordnung in die Spraydose eingesetzt, bevor der Kopf bzw. Hals der Dose geformt wird, der in der Dose abdichtend beweglich angeordnet ist, und dessen Position durch den Druck der als Treibmittel wirkenden Druckluft und den Gegendruck des Sprühmittels in Form des Befüllmediums bestimmt ist. Der Raum zwischen dem Kolben und dem Dosenboden ist geschlossen. Zum Befüllen dieses Raumes wird ein Ventil vorgesehen, das an der Oberseite des Kolbens angeordnet ist. Ist die Befüllung dieses Raumes mit Druckluft beim erstmaligen Aktivieren der Dose abgeschlossen, wird die Ventilöffnung verschlossen und bleibt verschlossen, so daß der Raum zwischen Kolben und Ventilteller mit dem Befüllmedium gefüllt wird.According to the invention, the piston assembly is inserted into the spray can before the head or neck of the can is formed, which is arranged so as to be movable and movable in the can is, and its position by the pressure of acting as a blowing agent Compressed air and the back pressure of the spray in the form of the filling medium determined is. The space between the piston and the can bottom is closed. For filling This space is provided with a valve on the top of the piston is arranged. Is this room filled with compressed air when activated for the first time the can is closed, the valve opening is closed and remains closed, so that the space between the piston and valve plate is filled with the filling medium becomes.

Der auf den Kolben von unten durch die Druckluft ausgeübte Druck und der durch das eingepreßte Sprühmittel auf den Kolben wirkende Gegendruck sind so aufeinander abgestimmt, daß das Sprühmittel unter ausreichend hohem Druck steht, daß es versprüht werden kann. Um den Druck der Druckluft zu begrenzen, wird das Druckverhältnis zu beiden Seiten des Druckkolbens so gewählt, daß der Kolben etwa mittig in bezug auf die Dosenhöhe eingestellt wird und der Luftdruck ausreichend hoch bemessen ist, daß auch bei nahezu leerer Dose, d.h., wenn die Dosenfüllung nahezu versprüht ist, der Rest mit ausreichendem Druck versprüht werden kann.The pressure exerted on the piston from below by the compressed air and that by the injected spray on the piston counter pressure acting on each other matched that the spray is under sufficiently high pressure that it sprays can be. To limit the pressure of the compressed air, the pressure ratio selected on both sides of the pressure piston so that the piston is approximately in the middle is set in relation to the can height and the air pressure is sufficiently high is that even when the can is almost empty, i.e. when the can filling is almost spraying the rest can be sprayed with sufficient pressure.

Der Kolben innerhalb der Dose ist so ausgebildet, daß an seiner Unterseite eine in Umfangsrichtung des Kolbenmantels kreisringförmig verlaufende Abdichtlippe vorgesehen ist, die nach unten und außen gerichtet ist, so daß aufgrund des Druckes, der von der Druckluft nach oben auf den Kolben ausgeübt wird, die Abdichtlippe gespreizt und damit die Dichtwirkung auf den Innenmantel der Dose verstärkt wird. In entsprechender Weise ist von dieser Abdichtlippe beabstandet eine entsprechende ringförmige Abdichtlippe vorgesehen, die nach oben und außen verläuft und die aufgrund des Druckwirkung des Sprühmittels zwischen Ventilteller und Kolben nach außen gespreizt wird, wodurch eine erhöhte Abdichtung an der Doseninnenwand erzielt wird, so daß sichergestellt wird, daß Sprühmittel auch unter Druck nicht am Kolben vorbei nach unten abströmen kann. Zur Verbesserung der Abdichtung wird die Doseninnenwand und/oder die Umfangsfläche des Kolbens speziell im Bereich der Abdichtlippen mit einer Schicht aus Abdichtmaterial, z.B. Teflon versehen; des weiteren sind die Abdichtlippen vorzugsweise als langgezogene Lippendichtungen ausgebildet, um die Abdichtwirkung zu verbessern. Der Kolben weist im oberen, dem Ventilteller zugewandten Bereich eine Formgebung auf, die entsprechend dem Hals der Dose nach innen und oben gekrümmt ist und im inneren Bereich entsprechend der Form des Ventiltellers napfförmig ausgebildet ist, so daß der Ventilteller mit Sprühventil in dieser Napfform aufgenommen werden kann. Der Kolben ist vorzugsweise hohl ausgebildet und weist Versteifungen auf, nämlich eine innere zylindrische Nabe und von dieser Nabe zum Außenmantel radial verlaufende stegförmige Wandungen. Er besteht in der Regel aus Kunststoff, kann jedoch auch aus Metall hergestellt sein, wobei die Abdichtlippen im Falle einer Kunststoffausführung ebenfalls aus Kunststoff bestehen können oder wahlweise als Gummidichtungen ausgebildet sind, wie dies für eine Metallausführung zutrifft.The piston within the can is designed so that a circumferential direction on its underside of the piston skirt provided an annular sealing lip is directed downwards and outwards, so that due to the pressure exerted by the Compressed air is exerted upwards on the piston, the sealing lip spreads and so that the sealing effect on the inner jacket of the can is strengthened. In corresponding A corresponding annular sealing lip is spaced from this sealing lip provided that runs upwards and outwards and that due to the Pressure effect of the spray between the valve disc and piston spread outwards which results in an increased seal on the inner wall of the can so that it is ensured that spray does not pass the piston even under pressure can flow down. To improve the seal, the inner wall of the can and / or the peripheral surface of the piston especially in the area of the sealing lips with a layer of sealing material, e.g. Provided with Teflon; furthermore are the sealing lips preferably designed as an elongated lip seal to achieve the sealing effect to improve. The piston points in the upper, facing the valve plate Area a shape that corresponds to the inside of the can's neck and is curved at the top and in the inner area according to the shape of the valve plate is cup-shaped, so that the valve plate with spray valve in this cup shape can be included. The piston is preferably hollow and has stiffeners, namely an inner cylindrical hub and from this hub web-shaped walls running radially to the outer jacket. It usually exists made of plastic, but can also be made of metal, the sealing lips can also consist of plastic in the case of a plastic version or are optionally designed as rubber seals, as is the case for a metal version true.

Das Befüllen der Dosen erfolgt mit einer Einrichtung, die ein Gestell aufweist, auf dessen Fuß die Nachfülldose bzw. -flasche in definierter Position aufgesetzt wird. Das Gestell weist oberhalb der Dose einen insbesondere elektrohydraulisch angetriebenen Kolben mit einem zylindrischen Gefäß, das die in die Nachfülldose einzubringende Füllmenge enthält, sowie am unteren Ende eine Füllnadel auf, die dem Sprühventil der darunter befindlichen Dose exakt zugeordnet ist und die bei einer Aktivierung des elektrohydraulischen Füllkolbens gegen das Sprühventil drückt und dieses zum Befüllen öffnet. Das Befüllmaterial wird aus einem Vorratsbehälter über eine Ansaugleitung in den Füllbehälter, in dem der Füllkolben angeordnet ist, eingeführt, wobei das jeweils zugeführte Volumen an Sprühmittel die exakte Menge ist, die in die Nachfülldose bei einer Befüllung eingefüllt werden soll. Zwischen Ansaugleitung und Befüllbehälter ist ein Rückschlag- und Überdruckventil vorgesehen, das so ausgelegt ist, daß bei einer Füllbewegung des Kolbens die Füllflüssigkeit nicht in die Ansaugleitung, sondern nur in die Nachfülldose eingebracht wird, und ferner so, daß bei entsprechender Eichung die Nachfülldose nicht überfüllt werden kann.The cans are filled with a device that has a frame on its The refill can or bottle is placed in a defined position. The frame has a particularly electro-hydraulically driven above the can Piston with a cylindrical vessel that contains the one to be placed in the refill can Filling quantity contains, as well as a filling needle at the lower end, which the spray valve of the socket underneath is assigned exactly and which is activated when the electrohydraulic filling piston presses against the spray valve and this for filling opens. The filling material is taken from a storage container via a suction line introduced into the filling container in which the filling piston is arranged, with each dispensed volume of spray is the exact amount that goes into the refill to be filled in during a filling. Between the suction line and the filling container a check and pressure relief valve is provided, which is designed so that during a filling movement of the piston, the filling liquid does not enter the suction line, but is only introduced into the refill can, and further so that with a corresponding The refill can cannot be overfilled.

Die Nachfülldose ist in Form einer nahtlosen oder einer Monoblock-Dose bzw. - Flasche aus Aluminium oder Kunststoff ausgebildet. Damit kann das Gewicht gering gehalten werden.The refill can is in the form of a seamless or a monoblock can or Bottle made of aluminum or plastic. So that the weight can be low being held.

Das zu versprühende Mittel kann ein beliebiges Fluid sein, beispielsweise in Form technischer Flüssigkeiten, wie Schmieröle etc., Spraymittel, wie sie für die Haarpflege verwendet werden, hoch- oder niedrigviskose Cremes, Schäume (bei geringerem Druck) und dergl.The agent to be sprayed can be any fluid, for example in the form technical liquids, such as lubricating oils etc., spray agents, such as those used for hair care be used, high or low viscosity creams, foams (with less Pressure) and the like.

Die Vorteile der Erfindung bestehen insbesondere darin, daß die Sprühdose oder Sprühflasche beliebig oft nachfüllbar ist, daß beim Nachfüllen des Sprühmittels ein Nachfüllen des Treibmittels vollständig entfällt, daß als Treibmittel Luft verwendet wird, die überall und kostenlos zur Verfügung steht, daß die Dose bzw. Flasche umweltfreundlich ist, weil sie einerseits wiederholt befüllbar ist und weil andererseits als Treibmittel völlig unschädliche Luft verwendet wird, daß die Füllkosten ganz entscheidend gesenkt werden können, und daß ein Luftanschluß für das Einfüllen eines Treibmittels in einer Befüllstation nach herkömmlichen Methoden entfällt. Mit vorliegender Erfindung ist es ferner Einzelabfüllern möglich, Spraydosen oder Sprayflaschen selbst und individuell an Ort und Stelle wiederholt zu befüllen, sodaß z.B. in einem Friseursalon leergewordene Spraydosen problemlos, schnell und preiswert nachgefüllt und damit wiederholt verwendet werden können. Dadurch, daß die Flasche erst nach dem Einsetzen des Kolbens gebördelt wird, läßt sich von außen nicht erkennen, daß es sich um eine Sprayflasche handelt. die sich von herkömmlichen Sprayflaschen grundsätzlich unterscheidet.The advantages of the invention are in particular that the spray can or Spray bottle can be refilled any number of times that when refilling the spray Refilling the propellant completely eliminates the use of air as the propellant that is available everywhere and free of charge that the can or bottle is environmentally friendly is because on the one hand it can be filled repeatedly and on the other hand as Blowing air is used that is completely harmless, so that the filling costs are crucial can be reduced, and that an air connection for filling a propellant in a filling station using conventional methods. With the present According to the invention, it is also possible for individual fillers, spray cans or spray bottles themselves and to be repeatedly filled individually on the spot, so that e.g. in a hair salon empty spray cans easily, quickly and inexpensively refilled and so that can be used repeatedly. Because the bottle only after Inserting the piston is flared, it can not be seen from the outside that it is is a spray bottle. which are different from conventional spray bottles different.

Ein weiterer, entscheidender Vorteil der Erfindung ergibt sich daraus, daß der mit Druckluft gefüllte Raum der im Bodenbereich vollständig geschlossenen Dose unterhalb des Kolbens während der gesamten Betriebsdauer der Dose unverändert gefüllt bleibt, so daß die einmal eingefüllte Druckluft und damit auch die hierfür aufgewendete Energie erhalten bleibt, während das zu versprühende Fluid nach der Abgabe aus der Spraydose immer wieder nachgefüllt wird. Wird die Spraydose entsorgt, strömt die Druckluft ins Freie und wird von der umgebenden Atmosphäre ohne jede schädliche Umweltbeeinflussung aufgenommen.Another, decisive advantage of the invention results from the fact that the Compressed air-filled space of the can, which is completely closed in the floor area below of the piston filled unchanged during the entire service life of the can remains, so that the compressed air once filled in and thus also the one used for this Energy is retained while the fluid to be sprayed is released after dispensing the spray can is refilled again and again. If the spray can is disposed of, it flows Compressed air outside and is free from the surrounding atmosphere without any harmful Environmental impact added.

Nachstehend wird die Erfindung in Verbindung mit der Zeichnung anhand eines Ausführungsbeispieles erläutert. Es zeigt:

Fig. 1
eine Einrichtung zum Befüllen einer erfindungsgemäßen Nachfülldose,
Fig. 2
eine Nachfülldose im Ausgangszustand des Herstellvorganges, mit getrennt dargestelltem Kolben,
Fig. 3
eine Nachfülldose nach Fig. 2 mit eingesetztem Kolben,
Fig. 4
eine Nachfülldose nach Fig. 3 mit verformtem Hals, und mit Druckluft befüllt,
Fig. 5
eine Nachfülldose nach Fig. 4, mit verclinchtem Ventilteller,
Fig. 6
eine Nachfülldose nach Fig. 5 mit befülltem Sprühmittel,
Fig. 7
einen Ventilteller mit Sprühventil nach Fig. 5.
The invention is explained below in connection with the drawing using an exemplary embodiment. It shows:
Fig. 1
a device for filling a refill can according to the invention,
Fig. 2
a refill can in the initial state of the manufacturing process, with the piston shown separately,
Fig. 3
2 with a piston inserted,
Fig. 4
3 with a deformed neck, and filled with compressed air,
Fig. 5
4, with a clipped valve disk,
Fig. 6
5 with filled spray medium,
Fig. 7
a valve plate with spray valve according to FIG. 5.

An einem Gestell 1 mit einem vertikalen Ständer 2 und einer Bodenplatte 3 sind ein oberer Tragarm 4 und ein unterer Tragarm 5 angebracht, zwischen denen ein Füllbehälter 6 zur Aufnahme des abzufüllenden Materials angeordnet ist. Der Behälter nimmt einen Kolben 7 auf. Mit 7' ist ein Handhebel (gestrichelt) angedeutet, der anstelle eines Kolbenantriebs alternativ für ein Handgerät verwendet werden kann. Das Füllvolumen des Behälters 6 ist entsprechend der jeweils abzugebenden Charge an Sprühmittel ausgelegt. Die Fig. 1 zeigt mit 7 die obere Position des Kolbens, der elektrohydraulisch angetrieben sein kann, und mit 8 dessen untere Kolbenposition. Am unteren Ende des Füllbehälters 6 ist eine Füllnadel 9 angebracht, mit deren Hilfe die Übergabe des Sprühmittels vorgenommen wird. Das Sprühmittel wird aus einem (nicht dargestellten) Vorratsbehälter, z.B. einem Vorratsgebinde, über eine Ansaugleitung 10 und ein Rückschlag- und Überdruckventil 11 an das untere Ende des Behälters 6 angeschlossen, so daß zur Vorbereitung eines Füllvorganges der Behälter 6 unterhalb des in seiner oberen Position befindlichen Kolbens 7 vollständig gefüllt wird. Dieses Volumen an Sprühmittel wird in die auf die Bodenplatte 3 aufgesetzte Nachfülldose 12 unter der Druckwirkung des Kolbens 7 eingefüllt. Die Dose 12 weist einen Boden 13 auf, der auf der Bodenplatte 3 so arretiert wird, daß die Mittelachse 14 der Dose 12 mit der Mittelachse 15 des Füllkolbens 7 zusammenfällt. Durch Verwendung eines geeichten Rückschlag- oder Überdruckventils wird eine Überfüll - Ducksicherung erreicht. Der zur Anwendung kommende Druck ist auf die jeweiligen abzufüllenden Materialien und die zu befüllenden Dosen einstellbar. Die benötigte Füllmenge kann vorher im Kolben zwischengespeichert und dann portionsweise in die Dose eingebracht. Damit lassen sich beliebige Blechdosen, Flaschen, Aludruckbehälter u. dergl. problemlos und in besonders einfacher Weise befüllen.On a frame 1 with a vertical stand 2 and a base plate 3 are a upper arm 4 and a lower arm 5 attached, between which a filling container 6 is arranged for receiving the material to be filled. The container receives a piston 7. With 7 'a hand lever (dashed) is indicated, which instead of a piston drive can alternatively be used for a hand-held device. The filling volume of the container 6 is in accordance with the batch to be dispensed Designed spray. Fig. 1 shows with 7 the upper position of the piston, the electro-hydraulic can be driven, and with 8 its lower piston position. At the a filling needle 9 is attached, with the help of which the Transfer of the spray is made. The spray is made from a (not shown), e.g. a supply container, via an intake line 10 and a check and pressure relief valve 11 connected to the lower end of the container 6, so that in preparation for a filling process the container 6 below the in piston 7 located in its upper position is completely filled. That volume of spraying agent is placed in the refill box 12 placed on the base plate 3 the pressure effect of the piston 7 is filled. The can 12 has a bottom 13, which is locked on the base plate 3 so that the central axis 14 of the can 12 with the Central axis 15 of the filling piston 7 coincides. By using a calibrated Non-return or pressure relief valve overfill protection is achieved. The The applied pressure is on the respective materials to be filled and the cans to be filled are adjustable. The required filling quantity can be checked in advance The flask is temporarily stored and then introduced into the can in portions. In order to can be any tin cans, bottles, aluminum pressure vessels and. the like. easily and fill in a particularly simple manner.

In der Nachfülldose 12 ist ein Dosenkolben 16 (vorzugsweise aus Kunststoff) angeordnet, der kreisförmigen Querschnitt hat und der abdichtend längs des zylindrischen Teils des Innenumfangs der Dose 12 in Achsrichtung 14 beweglich ist. Er weist einen ringförmigen Abschnitt 17 auf, dessen Außenumfang eine umlaufende Dichtung besitzt. Der Dosenhals 18 der Dose 12 ist nach innen domartig zu einer Öffnung der Dose geformt, die einen Ventilteller 19 aufweist, der die Dosenöffnung verschließt. Im Ventilteller 19 ist ein Sprühventil 20 in Form eines Mutterventils angeordnet. Mit 21 ist der obere tiefgezogene Kolbenrand des Kolbens 16 bezeichnet, der eine Öffnung 22 zur Aufnahme eines Ventils 23 aufweist, das von herkömmlicher Ausführung sein kann, z.B. aus Gummi, Kunststoff oder Metall (Kugelventil), besteht, über das Druckluft bzw. Druckgas in den Abschnitt unterhalb des Dosenkolbens 16 eingeführt wird. Die Ringdichtung 17 des Kolbens 16 weist, wie in Fig. 2 dargestellt ist, eine untere ringförmige Lippendichtung 24 auf, deren Lippe nach unten und außen gerichtet ist und durch die Druckluftfüllung 26, die einen Druck im Dosenraum ausübt, nach außen gespreizt und damit in verstärkte Anlage mit der Innenfläche der Nachfülldose 12 gedrückt wird. Entsprechend weist der Kolben 16 eine obere Lippendichtung 25 auf, die nach oben und außen gerichtet ist und die durch den Druck des Sprühmittels 27 über dem Kolben 16 nach unten und außen gedrückt wird, so daß auch diese Lippendichtung unter Druck verstärkt an der Innenfläche der Nachfülldose 12 in Anlage kommt. Der Kolben 16 innerhalb der Nachfülldose 12 ist hohl ausgebildet und weist versteifende, radial verlaufende Stegwände und einen zylindrischen bzw. nabenförmigen Teil auf, die beide nicht dargestellt sind. Damit erhält der Kolben eine hohe Steifigkeit und gleichzeitig ein geringes Gewicht.A can piston 16 (preferably made of plastic) is arranged in the refill can 12, has the circular cross section and the sealing along the cylindrical Part of the inner circumference of the can 12 is movable in the axial direction 14. He has one annular section 17, the outer periphery of which has a circumferential seal. The can neck 18 of the can 12 is dome-like to the inside of an opening of the can shaped, which has a valve plate 19 which closes the can opening. in the Valve plate 19, a spray valve 20 is arranged in the form of a mother valve. At 21 is denotes the upper deep-drawn piston rim of the piston 16, which has an opening 22 for receiving a valve 23 which may be of conventional design can, e.g. made of rubber, plastic or metal (ball valve), via which compressed air or compressed gas is introduced into the section below the can piston 16. The Ring seal 17 of the piston 16 has, as shown in Fig. 2, a lower annular Lip seal 24, the lip of which is directed downwards and outwards and through the compressed air filling 26, which exerts a pressure in the can space, to the outside spread and thus pressed into reinforced contact with the inner surface of the refill 12 becomes. Accordingly, the piston 16 has an upper lip seal 25 which is directed upwards and outwards and by the pressure of the spray 27 over the piston 16 is pressed down and out, so that this lip seal comes under pressure on the inner surface of the refill can 12. The piston 16 within the refill can 12 is hollow and has stiffening, radially extending web walls and a cylindrical or hub-shaped part both of which are not shown. This gives the piston high rigidity and low weight at the same time.

Um die Abdichtung des Kolbens 16 an den Abdichtlippen 24 und 25 zur Doseninnenwand weiter zu verbessern, wird die Doseninnenwand und/oder die Umfangsfläche des Kolbens 16 insbesondere im Bereich der Abdichtlippen 24 und 25 mit einer abdichtenden Schicht 28, 29 aus Teflon oder dergl. Material versehen.To seal the piston 16 on the sealing lips 24 and 25 to the inner wall of the can to further improve the inner wall of the can and / or the peripheral surface of the piston 16 in particular in the area of the sealing lips 24 and 25 with a sealing layer 28, 29 made of Teflon or the like. Material.

In Fig. 2 ist die Monoblock-Dose 30 in ihrem Ausgangszustand dargestellt; ihr Innenrand ist nahtfrei ausgebildet und weist eine Teflonbeschichtung 28 auf. Der rohrförmige Zylinder 30 mit integriertem Boden 31 ist am oberen Ende 32 offen, damit der Kolben 16 in den Zylinder eingesetzt werden kann (wie in Fig. 3 dargestellt). Nach dem Einsetzen des Kolbens 16 in den Zylinder 30 wird der Kopfteil des Zylinders 30 (wie in Fig. 4 dargestellt) zu einem Dom 33 mit einer Öffnung 34 geformt, deren Umfangsrand bei 35 gebördelt ist. Die Dose 30 wird anschließend mit Druckluft über eine Füllnadel 36 befüllt, die durch das Ventil 23 in den Zylinder eingefüllt wird. Das Ventil 23 ist z.B. ein Gummiventil, und die Füllnadel 36 hat einen so geringen Durchmesser, daß das Gummiventil 23 sich nach dem Zurückziehen der Füllnadel 36 wieder selbsttätig verschließt. Anschließend wird der Ventilteller 37 mit Ventil 38 (entspricht dem Ventilteller 19 mit Ventil 20 der Fig. 1) aufgesetzt und mit dem gebördelten Umfangsrand 35 der Dose verclincht. Damit wird der Raum zwischen Ventilteller 37 und Kolbenoberseite festgelegt und abgedichtet. Über einen Fülldorn 39 einer Fluid-Einfüllvorrichtung 40 wird das Sprühmittel in diesen Sprühmittel-Raum 41 eingeführt und aufgrund des ausgeübten Druckes wird der Kolben 16 nach unten entgegen der Druckwirkung der Druckluftfüllung gedrückt.2 shows the monoblock box 30 in its initial state; their inner rim is seamless and has a Teflon coating 28. The tubular Cylinder 30 with integrated bottom 31 is open at the upper end 32, so that the piston 16 can be inserted into the cylinder (as shown in Fig. 3). After this Inserting the piston 16 into the cylinder 30, the head portion of the cylinder 30 (as in Fig. 4) formed into a dome 33 with an opening 34, the peripheral edge is flanged at 35. The can 30 is then compressed air over a filling needle 36 filled, which is filled through the valve 23 in the cylinder. The valve 23 is e.g. a rubber valve, and the filling needle 36 has such a small diameter that the rubber valve 23 automatically after the retraction of the filling needle 36 closes. Then the valve plate 37 with valve 38 (corresponds to the valve plate 19 with valve 20 of FIG. 1) and with the flanged peripheral edge 35 the can clinks. So that the space between the valve plate 37 and piston top fixed and sealed. Via a filling mandrel 39 of a fluid filling device 40 the spray is introduced into this spray chamber 41 and due to the applied pressure, the piston 16 is down against the pressure effect of the Compressed air filling pressed.

Das Ventil 38, das in den Ventilteller 37 integriert ist, ist ein Sprühventil ohne Stem, das in einer Gehäuse 42 eine Druckfeder 43 aufnimmt. The valve 38, which is integrated in the valve plate 37, is a spray valve without stem, which receives a compression spring 43 in a housing 42.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Gestellframe
22
Ständerstand
33
Bodenplattebaseplate
44
Oberer TragarmUpper arm
55
Unterer TragarmLower arm
66
FüllbehälterStorage capacities
77
Füllkolben, obere PositionFilling piston, upper position
7'7 '
Handhebelhand lever
88th
Füllkolben, untere PositionFilling piston, lower position
99
Füllnadelfilling needle
1010
Ansaugleitungsuction
1111
Rückschlag- und ÜberdruckventilCheck and pressure relief valve
1212
Nachfülldoserefill
1313
Bodenground
1414
Mittelachse DoseCentral axis can
1515
Mittelachse FüllkolbenCentral axis filling piston
1616
Dosenkolbencans piston
1717
ringförmiger Abschnittannular section
1818
Drosselhals mit ÖffnungThrottle neck with opening
1919
Ventiltellervalve disc
2020
Sprühventilspray valve
2121
Oberer KolbenrandUpper piston rim
2222
Öffnung zur Aufnahme desOpening for receiving the
2323
VentilValve
2424
Untere DichtungLower seal
2525
Obere DichtungUpper seal
2626
Druckluftfüllung Compressed air filling
2727
Sprühmittelspray
28, 2928, 29
abdichtende Schichtsealing layer
3030
Monoblock-DoseMonoblock can
3131
Bodenground
3232
oberes Dosenendeupper end of the can
3333
Domcathedral
3434
Öffnungopening
3535
Bördelungflanging
3636
Füllnadelfilling needle
3737
Ventiltellervalve disc
3838
VentilValve
3939
Fülldornfilling mandrel
4040
Fluid-EinfüllvorrichtungFluid dispensing device
4141
Sprühmittelspray
4242
Gehäusecasing
4343
Druckfedercompression spring

Claims (9)

  1. Repeatedly refillable monoblock spray can (12) with a cylindrical body and a conical neck portion which is closed by means of a spray valve (20; 38) receiving a valve disk (19; 37) through which fluid (27; 41) under pressure is filled into the can, comprising:
    a) a piston (16) positioned within the cylindrical portion of the interior of the can which piston is provided with seals (24, 25) associated to the inner peripheral wall of the can,
    b) the space underneath the piston (16) is filled with pressurized air (26) forming the propellant,
    c) the space formed by the upper side of the piston (16), the lower side of the valve disk (19; 37) and the upper inner wall of the (12) receives the fluid (27) to be sprayed,
    d) the spray valve (20; 38) is integrated into the bottom of the valve disk (19; 37), and
    e) a valve (23) is arranged within the piston (16) at the upper side facing the fluid (27) to be sprayed.
  2. Can according to claim 1, wherein the piston (16) is a metal or plastic member, which at the lower outer edge has a sealing lip (24) arranged and shaped in such a manner that with an upward pressure acting upon the piston the lip is spread outwardly and seals between the inner surface of the can (12) and the peripheral surface of the piston (16), which is provided with a sealing lip (25) in the intermediate area, which sealing lip with a pressure acting upon the upper side of the piston spreads outwardly and seals between the inner surface of the can (12) and the peripheral surface of the piston (16), and which in the upper area is adapted to the shape of the conical section of the can body.
  3. Can according to claim 1 or 2, wherein the piston (16) is a central, deep-drawn, cup-like recess (21) adapted in shape to the shape of the valve disk (19), and has a ring-like peripheral wall (17) at the upper and the lower end of which one of the ring-like sealing lips (24, 25) each is provided.
  4. Can according to one of claims 1 - 3, wherein the interior of the piston (16) is provided with lamella-type reinforcement elements.
  5. Can according to one of claims 1 - 4, wherein the inner wall of the can (12) and/or the peripheral wall of the piston (16), especially at the sealing lips (24, 25) is provided with a coating (28, 29), for example, made of Teflon.
  6. Method for manufacturing repeatedly refillable monoblock spray cans according to claims 1, which are filled with spray fluid under pressure, said fluid being sprayed off by operating a spray valve, wherein
    a) a can body of cylindrical shape which is open at the top and has a continuous diameter over the entire height of the can is manufactured with an integrated bottom,
    b) a piston within the cylindrical can body is inserted from the top so that it can be moved along the cylindrical inner wall of the can body, and by a sealing engagement with the inner wall the spaces above and below the piston are maintained separate from each other by means of sealing lips of the piston,
    c) the upper end of the cylindrical can body is deformed towards the neck of the can and is flanged,
    d) the can body below the piston is filled with pressurized air through a valve provided within the piston by means of a filling needle,
    e) a valve disk with a spray valve is inserted at the upper can valve and the valve disk is clinched with the can, and
    f) the spray material is passed into the can between the valve disk and the piston by means of a filler spike through the spray valve of the valve disk.
  7. Device for filling repeatedly refillable spray cans according to claim 1, comprising the combination of the following features:
    a) a rack (1) which forms the filling station,
    b) a filler piston (7) with a filling container (6), which is supplied with the fluid to be filled through a suction line (10) from a supply container, the filler piston being attached to the rack (1),
    c) a non-return and overpressure valve (11) within the suction line (10),
    d) a filler needle (9) at the piston end facing the valve disk (19) of the can, which filler needle is associated to the spray valve within the valve disk and opens the spray valve when extending the filler piston so that fluid from the supply container for filling a can is made available, and
    e) a foot (3) on the rack (1) which positions the can (12) centrally to the filler needle.
  8. Device according to claim 7, wherein the filler container (7) receiving the filler piston (6) has a volume corresponding to the fluid amount which is to be transferred to the can (12).
  9. Device according to claim 7 or 8, wherein the overpressure valve (11) is a calibrated valve which prevents overfilling the can (12).
EP98936090A 1998-06-03 1998-06-03 Multi-refillable spray can, device for filling said cans and method for producing said spray cans Expired - Lifetime EP1084067B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1998/001510 WO1999062792A1 (en) 1998-06-03 1998-06-03 Multi-refillable spray can, device for filling said cans and method for producing said spray cans

Publications (2)

Publication Number Publication Date
EP1084067A1 EP1084067A1 (en) 2001-03-21
EP1084067B1 true EP1084067B1 (en) 2002-04-17

Family

ID=6918647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98936090A Expired - Lifetime EP1084067B1 (en) 1998-06-03 1998-06-03 Multi-refillable spray can, device for filling said cans and method for producing said spray cans

Country Status (7)

Country Link
US (1) US6332482B1 (en)
EP (1) EP1084067B1 (en)
JP (1) JP2002516796A (en)
AT (1) ATE216342T1 (en)
AU (1) AU8529598A (en)
DE (2) DE19882505D2 (en)
WO (1) WO1999062792A1 (en)

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AU7376100A (en) * 1999-09-15 2001-04-24 Dispensing Containers Corporation Aerosol container with a piston
AUPQ450999A0 (en) * 1999-12-07 2000-01-06 Perna Pty Ltd Storage and dispensing of carbonated beverages
DE202006017522U1 (en) * 2006-11-15 2007-01-18 Perma-Tec Gmbh & Co. Kg Lubricant dispenser has at least one tooth arranged on periphery of piston and pressing against inside wall of lubricant reservoir, and consists of harder material in comparison to lubricant reservoir
ES2315200B1 (en) * 2007-09-14 2009-10-29 Clayspray, S.L. COSMETIC COMPOSITION FOR TOPICAL ADMINISTRATION IN THE FORM OF SPRAY.
US20090283550A1 (en) * 2008-05-16 2009-11-19 Kimball James F Extreme Barrier Metal Piston and Container Utilizing Same
CH700392B1 (en) * 2009-02-06 2012-12-31 Gerhard Obrist Delivery device for the metered delivery of a liquid formulation and method for producing the dispensing device.
DE102009021501B4 (en) * 2009-05-15 2011-09-01 F. Holzer Gmbh Reservoir and use of the reservoir
US20140076458A1 (en) * 2012-03-08 2014-03-20 Darin Brown Bag On Valve Filling Machine
US20150166252A1 (en) * 2013-12-13 2015-06-18 HCT Group Holding Limited Compressed Gas Dispensers
US10045600B2 (en) 2014-09-18 2018-08-14 HCT Group Holdings Limited Container with quick release base and lid assembly
US10301104B2 (en) * 2015-06-18 2019-05-28 The Procter & Gamble Company Piston aerosol dispenser
US9975656B2 (en) * 2015-06-18 2018-05-22 The Procter & Gamble Company Method of manufacturing a piston aerosol dispenser
USD786088S1 (en) 2015-07-10 2017-05-09 HCT Group Holdings Limited Angled pump with depression
US9993059B2 (en) 2015-07-10 2018-06-12 HCT Group Holdings Limited Roller applicator
USD784162S1 (en) 2015-10-08 2017-04-18 HCT Group Holdings Limited Tottle
USD818641S1 (en) 2016-03-16 2018-05-22 HCT Group Holdings Limited Cosmetics applicator with cap
JP2020007014A (en) * 2018-07-10 2020-01-16 株式会社ダイゾー Two-liquid ejection container and two-liquid ejection product

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US3654743A (en) * 1970-06-19 1972-04-11 Colgate Palmolive Co Container filling
US3923208A (en) * 1974-07-19 1975-12-02 Us Army Fluid expulsion system having a tapered tank
US3915352A (en) * 1974-09-11 1975-10-28 Christian T Scheindel Aerosol can and piston assembly
US4108219A (en) * 1977-05-25 1978-08-22 Joseph Shulsinger Aerosol dispenser with inner container and piston
EP0078936B1 (en) 1981-11-06 1986-05-28 Polypag Ag Pressured container for delivering assembly foam, especially one-component polyurethane foam
FR2596022B1 (en) * 1986-03-24 1989-01-06 Clanet Frank FLEXIBLE AND INFLATABLE PISTON FOR A BI- OR PLURICOMPARTMENTAL CONTAINER
FR2639920A1 (en) * 1988-12-06 1990-06-08 Debard Andre Self-activated piston aerosol
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DE19717080C2 (en) * 1996-12-19 2001-12-06 Manfred Stadler Repeatable refillable spray can or bottle

Also Published As

Publication number Publication date
DE19882505D2 (en) 2001-06-21
EP1084067A1 (en) 2001-03-21
DE59803889D1 (en) 2002-05-23
US6332482B1 (en) 2001-12-25
ATE216342T1 (en) 2002-05-15
JP2002516796A (en) 2002-06-11
AU8529598A (en) 1999-12-20
WO1999062792A1 (en) 1999-12-09

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