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EP0320510A1 - Device for storing and controlled dispensing of pressurized products and a method for the manufacturing of said device. - Google Patents

Device for storing and controlled dispensing of pressurized products and a method for the manufacturing of said device.

Info

Publication number
EP0320510A1
EP0320510A1 EP88905346A EP88905346A EP0320510A1 EP 0320510 A1 EP0320510 A1 EP 0320510A1 EP 88905346 A EP88905346 A EP 88905346A EP 88905346 A EP88905346 A EP 88905346A EP 0320510 A1 EP0320510 A1 EP 0320510A1
Authority
EP
European Patent Office
Prior art keywords
valve
bag
container
product
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88905346A
Other languages
German (de)
French (fr)
Other versions
EP0320510B1 (en
Inventor
Winfried Jean Werding
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.)
EP Systems SA
Original Assignee
Individual
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
Priority claimed from CH242987A external-priority patent/CH674760A5/en
Priority claimed from CH4180/87A external-priority patent/CH676585A5/en
Application filed by Individual filed Critical Individual
Priority to AT88905346T priority Critical patent/ATE98191T1/en
Publication of EP0320510A1 publication Critical patent/EP0320510A1/en
Application granted granted Critical
Publication of EP0320510B1 publication Critical patent/EP0320510B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/44—Valves specially adapted for the discharge of contents; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action
    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/38—Details of the container body
    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/60—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant with contents and propellant separated
    • B65D83/62—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant with contents and propellant separated by membranes, bags or the like

Definitions

  • the present invention relates to a device according to the preamble of claim 1.
  • This device allows, compared to the conventional spray cans, either a reduced amount of liquid gas or compressed gases to be used as the driving force.
  • the non-flammable, only partially halogenated FREON 22 (chemical formula CHC1F2) »is known as a blowing agent. It may also be used in the USA and the Scandinavian countries, where FREON and FRIGEN are prohibited, because the FREON 22 still contains a hydrogen atom and is therefore not as stable as the fully halogenated hydrocarbons.
  • the vapor pressure of the non-flammable FREON 22 is very high and is around 9 bar at 20 ° C, it must either be mixed with a gas with lower vapor pressure, such as dimethyl ether or butane, but which is combustible, or used in a reduced amount , that is, depending on the container quality, between 18 and 50 percent by weight.
  • a piston In so-called “male” valves, a piston is provided with side holes which, when the valve is closed, lie within the wall thickness of the rubber seal, so that no product can escape. However, since the central hole of the seal is punched out, it has vertical grooves that are parallel to the axis and are more or less deep depending on the quality or wear of the punching tool, through which product can continue to flow after the valve has been closed, until it does so the rubber closes by squeezing into the side holes of the piston.
  • the valve closure is achieved by penetration of the ring rib of a piston into a rubber sealing washer. The rear sight of most ring ribs is 0.4 to 0.5 mm wide, which, depending on the hardness of the rubber, leads to a slow penetration of the piston into the seal, which also results in a reflow after closure when these valves are used leads.
  • REPLACEMENT LEAF can lead to the fact that not all product can be ejected from the container due to a lack of pressure.
  • valve disc there may also be a loss of pressure between the valve disc and the can neck.
  • aluminum cans are produced by a deep-drawing process of aluminum disks, with grooves running parallel to the can axis in the outer wall of the can, which can be between 0.02 and 0.08 mm deep depending on the can diameter, but are so narrow that the outer rubber seal cannot penetrate it and therefore cannot seal it.
  • these grooves are ground off on the neck of the box or filled with a varnish coating there is a release of pressure if the fastening of the valve is not carried out with the necessary precision.
  • a pressure loss of compressed gases due to incorrect holding of the can can be avoided by using a two-chamber system in which the product is stored in a flexible inner container and the ejection force, compressed gas, is stored in the rigid outer container. The latter acts on the flexible inner container and compresses it, thereby expelling the product inside.
  • Such systems are known. However, their flexible inner containers must be inserted into them before the can bottom is attached or the shoulder part rolls in the case of monoblock cans.
  • the filling of the compressed gas is relatively complicated and requires high precision, which is expensive, since the bottom of the can is provided with an opening which can be closed with a rubber stopper, next to which, if it is not yet completely in the opening is pressed in, the compressed gas is introduced into the can, after which the rubber stopper is pressed completely into the opening, which it then hermetically seals.
  • this gassing process requires a lot of time, so that mass production is expensive.
  • Metal cans require a multiple of the energy required to produce plastic and cans from this material, both for extracting the metal as such and for producing the cans. Depending on the type of metal, corrosion problems can also occur.
  • the present invention solves the problems described above and relates to a device for the storage and controlled delivery of products under pressure, as defined in claim 1.
  • FIG. 2 shows a section through a valve unit before a bag is welded on and inserted into a plastic container
  • FIG. 4 shows a plan view of the valve piston according to FIG. 3,
  • FIG. 6 shows a section through an open valve according to FIG. 3,
  • FIG. 7 is a view of an embodiment of a welded bag before it is filled
  • Fig. 9 shows a section through a siege in a plastic tube gela ⁇ metal core prior to welding a bag
  • FIG. 10 shows a section through the subject matter of the invention according to FIG. 9, mounted between two welding jaws, 11 is a partial view of a bag after welding onto the plastic tube according to FIGS. 9 and 10,
  • valve body 12 is a view of a valve in which the valve body is provided for the direct welding of a bag
  • FIG. 13 shows a perspective view of the valve body, as shown in FIG. 12, between two welding blocks,
  • FIG. 14 shows a plan view of a bag after welding onto a valve body according to FIG. 12,
  • Fig. 15 is a partial view of a bag according to the 'valve body by welding on Fig. 12,
  • 16 is a view of a valve unit carrying a folded bag
  • FIG. 17 shows a section through a metal can with a greatly enlarged can neck with a metal valve disc
  • 19 shows a section through a valve unit for viscous products, such as oils, creams, pastes, gels, etc.
  • the container 1 shows a device according to the invention in its entirety.
  • the container 1, here preferably made of PET (polyethylene terephthalate), has a hemispherical base 2 which is provided with the base cap 3 for standing. It contains the bag 4 in which the product 5 is stored.
  • the bag 4 is welded onto the valve body 6 which is attached to the plastic valve plate 7 and contains the piston 8 which is pressed strongly against the rubber seal 10 by means of the spring 9 and partially penetrates into it.
  • the plastic valve plate 7 is provided with the bore 11, which, when the container 1 is under pressure, is closed by means of the rubber seal 12, which is held with the flange 13 of the valve body 6 when the container 1 is not yet under There is pressure.
  • the piston 8 carries the spray head 14.
  • the plastic valve disk 7 is provided with the ring membrane 17 and the double ring rib 18, the ring membrane 17 being the can neck 19 and Ring rib 18 close the ring groove 20.
  • the ring membrane 17 and the ring rib 18 are drawn into their mentioned seats in a sealing manner by means of the snap closure 21.
  • the closure sleeve 22 prevents the snap closure 21 from opening and, thanks to its welding 23 to the container 1, secures its hermetic closure. Thanks to its enlargement, FIG. 2 shows the above details in detail. As explained in more detail with FIGS.
  • the valve body 6 is provided with side ribs 15 which form the beads 16 after the bag 4 has been welded on by means of the welding surface 24.
  • the underside of the closure sleeve 22 has an annular groove 25, which prevents the bore 11 from being covered, so that this bore is not visible from the outside, but can nevertheless be used to pressurize the container 1 from the outside, the seal 12 then serving as a check valve is working.
  • the device according to the invention is closed with the valve cap 26. The device is assembled and filled as follows:
  • the valve unit A carries, as shown in FIG. 16, a folded bag 4 which is kept folded at the valve height with a paper ring 79 and at the opposite end with the paper ring 80.
  • the paper thickness of the rings 27 and 28 is chosen so that it is inside the bag 4 when it is filled of the container 1 tear and thus ensure the unfolding of the bag 4.
  • the valve unit A with the folded bag 4 which behaves practically like a "normal" riser pipe and can be sorted by any commercially available filling machine, is inserted mechanically into the container 1 until one part of the snap closure 21 into the corresponding part of the can neck 19 engages, after which the closure sleeve 22 is then also welded mechanically onto the can neck 19 at height 23.
  • valve cap 26 After placing a special filling head on the closure sleeve 22, compressed air is introduced into the container 1 through the bore 11 of the valve plate 7, which then pressurizes the product in the bag 4. After placing the spray head 14 or, depending on the nature of the product, another dispensing element, the device according to the invention is ready for use. Ultimately, it is closed with the valve cap 26.
  • valve unit A If the valve unit A is used with compressed air as the driving force, it needs large cross-sections and a large number of flow channels 32 and 33, as shown in FIG. 4, in order to ensure the greatest possible thrust, especially after the pressure has been reduced .
  • the valve unit A consists of the valve body 34, which is provided with the riser pipe holder 35, the piston 36 with the pin 37, the compression spring 38, the inner seal 39, the valve plate 40 with the container seal 41 and the piston tube 42.
  • the valve disk 40 is provided with the bore 43, which, when a container closed with the valve unit A is under pressure, is sealed by means of the sealing disk 44, which is held by the flange 45.
  • the bottom of the valve body 34 is provided with ribs 46 on which the spring 38 rests. As a result, the product penetrating into the valve body can reach below the spring 38 between the ribs 46 in the direction of the seal 39.
  • the piston 36 carries the spring 38. It has guide ribs 47 and is shown enlarged in FIG. 3 with ribs and grooves.
  • the rear sight 48 of the valve body 34 is provided with vertical grooves 49, which allow gas to be gassed into a container closed with the valve unit A between the valve plate 40 and the seal 39, without opening the valve.
  • the base diameter of the pin 37 is slightly smaller than the inside diameter of the piston tube 42, so that a gap 50 is created. Parallel to the pin 37 is the groove 51, which opens into the groove 52 perpendicular to it. A product can therefore only emerge through the grooves 51 and 52 and the gap 50 when the valve is open. Since these passages have predetermined cross sections, the valve according to the invention has a calibrated output quantity per unit of time, specifically regardless of the distance traveled
  • liquid gas remains liquid under a certain pressure acting on it and only gasifies when this pressure, e.g. when emptying a container, becomes smaller. It is also known that a product under pressure can be accelerated with small flow cross-sections and thereby reduces its pressure, which means that depending on the acceleration of the product, its pressure drops below the pressure that keeps the gas liquid, so that it can gasify thanks to this acceleration.
  • a mixture of active product (alcohol, perfume, etc.) liquid gas and gaseous gas enters the spray nozzle, which then atomizes the active product mechanically, after which the explosive evaporation of the liquid gas portion, supported by the gaseous (bubbles 54 ) Gas fraction that refines the mechanical atomization so that the droplet size becomes so fine that rapid evaporation occurs, so the spray is not considered to be "wet".
  • the liquid gas is normally introduced into the aerosol container via the valve, the valve being opened mechanically, unless a special gassing device is used which, as described, the liquid gas between the valve plate 40 and the seal 39 via the grooves 49 inserted into the can. Since the valve according to the invention must have a very small flow cross-section for its described function, the gassing takes a lot of time, which is undesirable for mass production. Thanks to the bore 43 and the sealing washer 44, the gassing can take place quickly.
  • the nipple 57 of the bag 58 is fastened to the bag carrier 55 of the valve body 56, where it is prevented from jumping off by means of a snap closure (not shown).
  • the nipple 57 is provided with the washer 59, which has concentrically extending grooves 60. It consists of the same plastic material, for example polyethylene or polypropylene, as the inside of the foils intended to be welded together, so that the disc 59 can be welded to the foil material.
  • the bag 58 can be produced from a composite film in which there is an aluminum foil between two plastic foils, so that a migration of fragrances or air oxygen is avoided with an aluminum foil thickness of 0.012 mm.
  • This solution is mainly used when using the bag 58 for storing perfumes or foods and medicaments, in which migration, as described above, must be avoided.
  • a plastic film is provided with a hole through which the nipple 57 is inserted from the film side provided as the inside, so that the disc 59, because it is made of the same material as the inside of the bag, can be welded to it .
  • the film is then folded and provided with the welding surface 61 by means of heat, so that a bag is produced.
  • FIG. 9, 10 and 11 show another embodiment of a bag according to the invention.
  • This is a piece of pipe 62 which, on the one hand, is used to weld the foils from the same material and, on the other hand, becomes a nipple 63 which is attached to a valve, not shown, as also described above.
  • a nipple 63 which is attached to a valve, not shown, as also described above.
  • the wall thickness of the pipe section 62 should preferably be at least 1 mm.
  • a metal core 64 is introduced into the pipe section 62, the diameter of which is smaller than the inside diameter of the pipe section 62.
  • valve body 70 is to be provided with side wings 71 and 72. After inserting the valve body 70 between two plastic foils, these are clamped between two welding jaws 73 and 74, each of which has a semicircular groove 75, the diameter of which is smaller than the outer diameter of the valve body 70.
  • the valve body deforms under the heat of the welding jaws 70 in such a way that the side wings 71 and 72 flow between the foils and there avoid the longitudinal channels described above. This creates beads 76 and 77, which additionally improve the sealing of the bag.
  • This solution is extremely advantageous in that, on the one hand, it avoids the work of pushing the bag onto a valve unit A and, on the other hand, guaranteed length, so that the bag receives a larger filling volume.
  • FIG. 16 shows a bag 78 according to the invention, which is folded accordion-shaped and welded onto the valve unit A, the bag 78 being provided at the valve height with the paper ring 79 and at the opposite end with the paper ring 80, which is a Prevent the bag 79 from unfolding so that the bag 78 remains as rigid as a normal riser pipe and, although oversized, can be inserted into the customary cans.
  • the paper ring thickness is selected so that it can withstand transport and sorting, but tear when the bag 78 is filled, if it is accommodated inside the can, so that the bag 78 can fully unfold.
  • This solution also has the advantage that the folds form kinks which lead to fine, vertical grooves which remain even after unfolding and prevent the two welded foils from collapsing at valve height after a certain amount of product has been expelled, so that no product more can be emitted.
  • valve plate to the can neck requires a very high level of precision, which, however, is often insufficient when using compressed gases to avoid a leak between can neck 81 and valve unit A, as tests have shown.
  • cans 82, FIG. 17 on the market which are provided on the rear of the can neck 81 with a milled ring groove into which a rubber seal is inserted.
  • FIG. 18 shows the can neck of a plastic can 87, which has stair-shaped ring steps 88 and 89, so that corners 90 are formed which penetrate into the rubber seal 92 when the valve disk 91 is rolled up, and thus provide a secure, leak-free closure secure the can 87.
  • valve 19 shows a valve unit A which is used especially for dispensing viscous products.
  • the valve body 93 presses a seal 94 made of elastic material, which carries an ogive-shaped wart directed downward, into the valve plate 96.
  • the wart 95 is provided with a cut 97, which * is closed by means of the pressure indicated by the arrows 98 becomes.
  • the dispensing head 99 is provided with the tube piece 100 which is inserted into the wart 95 and carries the diffuser 102, also made of elastic material. If the delivery head 99 is moved downward, the cut 97 of the wart 95 and the cut 103 of the diffuser 102 open, as shown in broken lines, so that product can be ejected.
  • Dispensing head 99 houses a regulating disk 105, as described in patent no.
  • DD 250 694 A5 of the German Democratic Republic which, despite the reduction in pressure when using compressed gases, ensures an output quantity per unit of time that remains at least approximately constant .
  • the use of a regulating disk 105 is also advantageous because changes in temperature lead to strong pressure fluctuations and thereby to variable output quantities per unit of time.

Landscapes

  • 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)
  • Nozzles (AREA)

Abstract

Un sachet flexible rempli de produit (5) est disposé dans un récipient rigide (1) et est soudé à la soupape (A). Celle-ci rend le récipient (1) absolument étanche à l'aide d'une membrane (17) annulaire et d'une double nervure annulaire (18) qui sont comprimées dans le col (19) du récipient respectivement dans la rainure annulaire (20) ainsi que par le fait que la douille de fermeture (22) est soudée (23) sur le récipient. Le produit est comprimé dans le récipient (1) en enfonçant le piston (8) de la soupape dans le sachet (4) et de l'air comprimé est chassé dans le récipient par l'orifice (11) de l'assiette de la soupape. La soupape (A) obture le sachet (4) et le disque d'étanchéité (12) fonctionnant comme clapet de retenue, rend le récipient étanche et empêche des pertes de pression, de sorte qu'à l'ouverture de la soupape la pression du récipient comprime la poche (4) afin que le produit puisse être distribué par la tête de pulvérisation (14).A flexible bag filled with product (5) is placed in a rigid container (1) and is welded to the valve (A). This makes the container (1) absolutely watertight by means of an annular membrane (17) and a double annular rib (18) which are compressed in the neck (19) of the container respectively in the annular groove ( 20) as well as by the fact that the closure sleeve (22) is welded (23) to the container. The product is compressed in the container (1) by pushing the piston (8) of the valve into the bag (4) and compressed air is expelled into the container through the orifice (11) of the plate of the valve. The valve (A) closes the bag (4) and the sealing disc (12) functioning as a check valve, seals the container and prevents pressure losses, so that when the valve opens the pressure of the container compresses the bag (4) so that the product can be dispensed by the spray head (14).

Description

VORRICHTUNG ZUR LAGERUNG UND KONTROLLIERTEN ABGABE VON UNTER DRÜCK STEHENDEN PRODUDKTEN DEVICE FOR STORING AND CONTROLLED DELIVERY OF PRODUCTS UNDER PRESSURE

Die vorliegende Erfindung betrifft eine Vorrichtung gemäss dem Oberbegriff des Patentanspruches 1. Diese Vorrichtung gestattet, verglichen mit den herkömmlichen Spraydosen, ent¬ weder eine reduzierte Flüssiggasmenge oder komprimierte Gase als Treibkraft einzusetzen.The present invention relates to a device according to the preamble of claim 1. This device allows, compared to the conventional spray cans, either a reduced amount of liquid gas or compressed gases to be used as the driving force.

Das Verbot von vollhalogenisierten Kohlenwasserstoffen, be¬ kannt unter den Namen FRIGEN oder FREON, hat zur massiven Verwendung von Kohlenwasserstoffen wie Propan und Butan oder Dimethyläther und deren Gemischen geführt. FRIGEN und FREON sind für die die Erde umschliessende Ozonschicht gefährlich und Butan und Propan.sowie Dimethyläther wegen ihrer Explo¬ sionsgefährlichkeit für die Abfüllindustrie, aber auch für die Verbraucher, da Todesopfer durch Explosionen zu beklagen sind.The ban on fully halogenated hydrocarbons, known under the names FRIGEN or FREON, has led to the massive use of hydrocarbons such as propane and butane or dimethyl ether and their mixtures. FRIGEN and FREON are dangerous for the ozone layer surrounding the earth and butane and propane. As well as dimethyl ether because of their risk of explosion for the bottling industry, but also for the consumer, since deaths from explosions can be mourned.

Neben diesen brennbaren Gasen kennt man auch das unbrennba¬ re, nur teilweise halogenisierte FREON 22, (chemische Formel CHC1F2)» als Treibmittel. Es darf auch in den USA und den skandiavischen Ländern, wo FREON und FRIGEN verboten sind, eingesetzt werden, weil das FREON 22 noch ein Wasserstoff¬ atom enthält und daher nicht so beständig ist wie die voll¬ halogenisierten Kohlenwasserstoffe. Da aber der Dampfdruck des unbrennbaren FREON 22 sehr hoch ist und bei 20°C bei ca. 9 bar liegt, muss es entweder mit einem Gas mit niedrigerem Dampfdruck, wie Dimethyläther oder Butan, die aber brennbar sind, gemischt oder in reduzierter Menge eingesetzt werden, das heisst je nach Behälter-Qualität, zwischen 18 und 50 Gewichtsprozent. Speziell der Einsatz in Glasflacons ohne Plastik für Eau de Toilette ist problematisch, weil da der Druck 1,5 bar bei 20°C nicht übersteigen darf, der aber je nach Gehalt an Wasser oder ätherischem Oel bereits mit 18 % bis 20 % FREON 22 erreicht wird. Da aber die Zerstäubungs- qualität der herkömmlichen Sprays weitgehend vom Flüssiggas¬ anteil und somit dessen Expansions- oder besser Explosions¬ kraft im Kontakt mit dem at oshpärisehen Druck abhängt, reicht der Prozentsatz von ca. 20 % FREON 22 an Stelle der üblichen 50 % FREON 114/12 nicht aus, ein Eau de Toilette so zu zerstäuben, dass die Tropfchengrösse so fein ist, dass der Spray als "nicht nass" angesehen wird.In addition to these flammable gases, the non-flammable, only partially halogenated FREON 22 (chemical formula CHC1F2) »is known as a blowing agent. It may also be used in the USA and the Scandinavian countries, where FREON and FRIGEN are prohibited, because the FREON 22 still contains a hydrogen atom and is therefore not as stable as the fully halogenated hydrocarbons. However, since the vapor pressure of the non-flammable FREON 22 is very high and is around 9 bar at 20 ° C, it must either be mixed with a gas with lower vapor pressure, such as dimethyl ether or butane, but which is combustible, or used in a reduced amount , that is, depending on the container quality, between 18 and 50 percent by weight. The use in glass flacons without plastic for eau de toilette is particularly problematic because the pressure must not exceed 1.5 bar at 20 ° C, but depending on the content of water or essential oil it already reaches FREON 22 with 18% to 20% becomes. But since the atomizing The quality of conventional sprays largely depends on the proportion of liquefied gas and thus its expansion or better explosion force in contact with the atmospheric pressure, the percentage of approx. 20% FREON 22 instead of the usual 50% FREON 114/12 is not sufficient to atomize an eau de toilette in such a way that the droplet size is so fine that the spray is considered "not wet".

Auch bei Metalldosen gibt es Druckgrenzen, die gesetzlich nicht überschritten werden dürfen, sodass auch hier mit ei¬ ner, verglichen mit den herkömmlichen Spraydosen, kleinen Menge von FREON 22 gearbeitet werden uss.Even with metal cans there are pressure limits which must not be exceeded by law, so that here too a small amount of FREON 22 is used, compared to the conventional spray cans.

Das Suchen nach einer Lösung für das vorstehend beschriebene Problem hat zu einer Spritzdüse geführt, wie sie im Europä¬ ischen Patent Nr. 0000688 beschrieben ist und die rein me¬ chanisch eine sehr feine Zerstäubung abgibt. Weiter wurden Vorrichtungen entwickelt, wie sie in den Europäischen Paten¬ ten Nr. 0057226 und Nr. 0109361 und der PCT-Anmeldung CH 86/00103, veröffentlicht am 20.1.1987 unter der Nummer WO 87/00513, in verschiedenen Ausführungen beschrieben sind und die gestatten, als Treibkraft Druckluft statt Flüssiggas zu verwenden, wobei trotz fallendem Ausstossdruck eine zumin¬ dest annähernd konstante Ausstossrate pro Zeiteinheit und gleichbleibende Partikelgrösse erreicht werden.The search for a solution to the problem described above has led to a spray nozzle as described in European Patent No. 0000688 and which, from a purely mechanical point of view, emits a very fine atomization. Devices have also been developed as described in various versions in European Patents No. 0057226 and No. 0109361 and PCT application CH 86/00103, published on January 20, 1987 under number WO 87/00513, and which allow compressed air to be used as the driving force instead of liquefied petroleum gas, with an at least approximately constant discharge rate per unit of time and constant particle size being achieved despite falling discharge pressure.

Sowohl die Verwendung eines reduzierten Flüssiggasanteils von nur ca. 20 % oder komprimierter Luft, führt zu Schwie¬ rigkeiten. Die sich im Handel befindlichen Aerosolventile weisen alle trotz Schliessung des Ventils nach Verwendung ein Nachfliessen von Produkt auf. Wird ein solches Ventil mit einem hohen (normalen) Prozentsatz an Flüssiggas einge¬ setzt, so sieht man dieses Nachfliessen nicht, weil diese Gase in ihrer Flüssigphase gleichzeitig als Lösungsmittel dienen und mit dem Aktivprodukt vermischt beim Oeffnen des Ventils flüssig ausgestossen werden, was im Kontakt mit dem atmosphärischen Druck zu einer explosionsartigen Verdunstung sowohl des Flüssiggases als auch des Produktträgers wie Al- kolhol oder Wasser, führt. Verwendet man aber als Ausstoss- kraft komprimierte Gase wie Luft oder Stickstoff, oder setzt man einen niedrigen Prozentsatz von Flüssiggas ein, weniger als 25 % , so fehlt dieser Schnellverdunstungsfaktor oder er ist so gering, dass die das Nachfliessen verhehlende, rabia¬ te Verdunstung wegfällt.Both the use of a reduced liquid gas content of only about 20% or compressed air leads to difficulties. The aerosol valves on the market all have an afterflow of product despite the valve being closed after use. If such a valve is used with a high (normal) percentage of liquefied gas, this flow will not be seen, because these gases also serve as solvents in their liquid phase and are mixed with the active product when the valve is opened with the atmospheric pressure leads to an explosive evaporation of both the liquid gas and the product carrier such as alcohol or water. However, if compressed gases such as air or nitrogen are used as the ejection force, or if a low percentage of liquefied gas is used, less than 25%, this rapid evaporation factor is missing or it is so low that the rabid evaporation which hides the afterflow is eliminated .

Das Nachfliessen ist auf mehrere Faktoren zurückzuführen. Bei sogenannten "männlichen" Ventilen ist ein Kolben mit Seitenlöchern versehen, welche bei geschlossenem Ventil in¬ nerhalb der Wandstärke der Gummidichtung liegen, sodass kein Produkt austreten kann. Da aber das Zentralloch der Dichtung ausgestanzt ist, weist es senkrechte, parallel zur Achse liegende Nuten auf, die je nach Qualität oder Abnützung des Stanzwerkzeuges mehr oder weniger tief sind, über welche noch nach Schliessung des Ventils Produkt nachfliessen kann und zwar so lange, bis der Gummi durch ein Sichhineinzwängen in die Seitenlöcher des Kolbens diese verschliesst. Bei so¬ genannten "weiblichen" Ventilen wird der Ventilverschluss durch Eindringen der Ringrippe eines Kolbens in eine Gummi¬ dichtungsscheibe erreicht. Die Kimme der meisten Ringrippen ist 0,4 bis 0,5 mm breit, wodurch es, auch je nach der Härte des Gummis, zu einem langsamen Eindringen des Kolbens in die Dichtung kommt, was auch bei diesen Ventilen zu einem Nach¬ fliessen nach Schliessung führt.The backflow is due to several factors. In so-called "male" valves, a piston is provided with side holes which, when the valve is closed, lie within the wall thickness of the rubber seal, so that no product can escape. However, since the central hole of the seal is punched out, it has vertical grooves that are parallel to the axis and are more or less deep depending on the quality or wear of the punching tool, through which product can continue to flow after the valve has been closed, until it does so the rubber closes by squeezing into the side holes of the piston. In so-called "female" valves, the valve closure is achieved by penetration of the ring rib of a piston into a rubber sealing washer. The rear sight of most ring ribs is 0.4 to 0.5 mm wide, which, depending on the hardness of the rubber, leads to a slow penetration of the piston into the seal, which also results in a reflow after closure when these valves are used leads.

Je nach Ventilqualität fliessen pro Ventilöffnung bis zu 0,03 ml Produkt nach. Dieses Nachfliessen ist nicht nur un¬ schön, es führt auch, speziell bei Haarlacken, zu einer Ver¬ stopfung der Zerstäuberdüsen durch Austrocknen des Filmbi¬ nders, wenn die Ausstosskraft durch einen niedrigen Prozent¬ satz von Flüssiggas oder komprimierter Gase erwirkt wird. Auch führt die Verwendung von komprimierten Gasen oder einem tiefen Flüssiggasanteil zu einem anderen Problem, das dazuDepending on the valve quality, up to 0.03 ml of product flow in per valve opening. This reflow is not only unattractive, it also leads, especially in the case of hair lacquers, to a blockage of the atomizing nozzles by drying out the film bander if the ejection force is achieved by a low percentage of liquid gas or compressed gases. Also, the use of compressed gases or a deep liquefied gas fraction leads to another problem that leads to this

ERSATZBLATT führen kann, dass mangels Druck nicht alles Produkt aus dem Behälter ausgestossen werden kann.REPLACEMENT LEAF can lead to the fact that not all product can be ejected from the container due to a lack of pressure.

In einer mit Flüssiggas gefüllten Spraydose wird der Druck durch fortlaufende Vergasung der Flüssigphase jedesmal wie¬ der aufgebaut, wenn durch Entleeren der Dose der Druck ge¬ mäss physikalischem Gesetz, abfällt, sodass in der Dose praktisch ein konstanter Druck herrscht. Bei einem tiefen Prozentsatz von Flüssiggas reicht die Gasmenge gerade aus, den Druck konstant zu halten und den gesamten Behälterinhalt zu entleeren. Sprüht man aber mit einer Ventilöffnung zu lange, so führt die Vergasung zu einer Abkühlung der Dose, welche die Vergasung bremst, sodass nicht nur der Druck ab¬ fällt, sondern auch mehr Flüssiggas als vorgesehen ausgesto¬ ssen wird und daher letztendlich für die vollständige Ent- leerung der Dose fehlt. Auch durch die Verwendung der Dose mit dem Sprühkopf nach unten geht Gas verloren, das dann auch wieder fehlt.In a spray can filled with liquefied petroleum gas, the pressure is built up again by continuous gasification of the liquid phase whenever the pressure drops according to physical law by emptying the can, so that there is practically a constant pressure in the can. With a low percentage of liquefied petroleum gas, the amount of gas is just enough to keep the pressure constant and to empty the entire contents of the container. However, if you spray with a valve opening for too long, the gasification leads to a cooling of the can, which slows down the gasification, so that not only the pressure drops, but also more liquid gas is expelled than intended and therefore ultimately for the complete removal - The can is empty. By using the can with the spray head down, gas is lost, which is then missing again.

Bei der Verwendung von komprimierten Gasen als Ausstosskraft ist dieses Problem viel gravierender, weil es zu keinem Wie¬ deraufbau des Druckes kommen kann. Je nach Lage der Dose kann der Druck vollständig verloren gehen, sodass der rest¬ liche Doseninhalt, weil nicht mehr ausstossbar, verloren geht.When using compressed gases as ejection force, this problem is much more serious because the pressure cannot be rebuilt. Depending on the position of the can, the pressure can be completely lost, so that the remaining contents of the can are lost because they can no longer be ejected.

Trotz Dichtung kann es auch zu einem Druckverlust zwischen dem Ventilteller und dem Dosenhals kommen. Zum Beispiel wer¬ den Aluminiumdosen durch ein Tiefziehverfahren von Alumi¬ niumscheiben hergestellt, wobei es parallel zur Dosenachse laufende Nuten in der Aussenwand der Dose gibt, die je nach Dosendurchmesser zwischen 0,02 und 0,08 mm tief sein können, aber so schmal sind, dass die Aussengummidichtung nicht in sie eindringen und sie somit nicht abdichten kann. Obwohl diese Nuten je nach Dosentyp auf dem Hals der Dose abge¬ schliffen oder mit einem Lacküberzug gefüllt werden, kommt es dort zu einem Entweichen des Druckes, wenn das Befestigen des Ventils nicht mit der nötigen Präzision durchgeführt wird.Despite the seal, there may also be a loss of pressure between the valve disc and the can neck. For example, aluminum cans are produced by a deep-drawing process of aluminum disks, with grooves running parallel to the can axis in the outer wall of the can, which can be between 0.02 and 0.08 mm deep depending on the can diameter, but are so narrow that the outer rubber seal cannot penetrate it and therefore cannot seal it. Although, depending on the type of box, these grooves are ground off on the neck of the box or filled with a varnish coating there is a release of pressure if the fastening of the valve is not carried out with the necessary precision.

Ein Druckverlust von komprimierten Gasen durch falsches Hal¬ ten der Dose kann durch Verwendung eines Zweikammersystems vermieden werden, in dem das Produkt in einem flexiblen In¬ nenbehälter und die Ausstosskraft, komprimiertes Gas, im starren Aussenbehälter gelagert sind. Letztere wirkt auf den flexiblen Innenbehälterund drückt diesen zusammen, wodurch das darin befindliche Produkt ausgetrieben wird. Solche Sy¬ steme sind bekannt. Ihre flexiblen Innenbehälter müssen aber vor dem Anbringen des Dosenbodens oder Rollen des Schulter¬ teils bei Monoblockdosen, in diese eingeführt werden. Ferner ist das Einfüllen des komprimierten Gases relativ kompli- ziert und verlangt eine hohe Präzision, die teuer ist, da der Boden der Dose mit einer Oeffnung versehen ist, welche mit einem Gummistopfen verschliessbar ist, neben welchem, wenn er noch nicht vollständig in die Oeffnung eingedrückt ist, das komprimierte Gas in die Dose eingeführt wird, wo¬ nach der Gummistopfen vollständig in die Oeffnung gedrückt wird, die er dann hermetisch verschliesst. Neben der notwen¬ digen Präzision verlangt dieser Begasungsvorgang viel Zeit, sodass eine Massenproduktion kostspielig ist.A pressure loss of compressed gases due to incorrect holding of the can can be avoided by using a two-chamber system in which the product is stored in a flexible inner container and the ejection force, compressed gas, is stored in the rigid outer container. The latter acts on the flexible inner container and compresses it, thereby expelling the product inside. Such systems are known. However, their flexible inner containers must be inserted into them before the can bottom is attached or the shoulder part rolls in the case of monoblock cans. Furthermore, the filling of the compressed gas is relatively complicated and requires high precision, which is expensive, since the bottom of the can is provided with an opening which can be closed with a rubber stopper, next to which, if it is not yet completely in the opening is pressed in, the compressed gas is introduced into the can, after which the rubber stopper is pressed completely into the opening, which it then hermetically seals. In addition to the necessary precision, this gassing process requires a lot of time, so that mass production is expensive.

Metalldosen benötigen, sowohl zur Gewinnung des Metalls als solches wie auch zur Herstellung der Dosen ein Mehrfaches der Energie, die zur Herstellung von Plastik und Dosen aus diesem Material, notwendig ist. Je nach Metallart können auch noch Korrosionsprobleme auftreten.Metal cans require a multiple of the energy required to produce plastic and cans from this material, both for extracting the metal as such and for producing the cans. Depending on the type of metal, corrosion problems can also occur.

Um bei Verwendung von komprimierten Gasen Druckverluste durch falsches Halten der Dose zu vermeiden, gibt es auf dem ,In order to avoid pressure losses due to incorrect holding of the can when using compressed gases, there is

Markt Ventile, die dank einer Kugel ein Versprühen des Pro- fc- duktes selbst dann gestatten, wenn die Dose auf den Kopf ge- J stellt gehalten wird. Einen Druckverlust können sie aber, N wenn der Behälter schräg gehalten wird und das Steigrohr des «sMarket valves which, thanks to a ball, allow the product to be sprayed even when the can is held upside down. However, they can lose pressure, N if the container is held at an angle and the riser of the tank

Ventils weil raktisch immer ekrümmt nicht mehr im son- 12 Die vorliegende Erfindung löst die vorstehend beschriebenen Probleme und hat eine Vorrichtung zur Lagerung und kontrol¬ lierten Abgabe von unter Druck stehenden Produkten zum Ge¬ genstand, wie sie im Anspruch 1 definiert ist.Valve, because raktisch always no longer bends 12 The present invention solves the problems described above and relates to a device for the storage and controlled delivery of products under pressure, as defined in claim 1.

Die Erfindung wird nachstehend ausführlich beschrieben und mit vorteilhaften, nicht einschränkenden Ausführungsbeispie¬ len bildlich darg-estellt. Dabei zeigt die Zeichnung in:The invention is described in detail below and illustrated with advantageous, non-restrictive exemplary embodiments. The drawing shows in:

Fig. 1 einen Schnitt durch den Erfindungsgegenstand in ge¬ fülltem Zustand,1 shows a section through the subject matter of the invention in the filled state,

Fig. 2 einen Schnitt durch eine Ventileinheit vor dem Auf- schweissen eines Beutels und Einführen in einen Plastikbe¬ hälter,2 shows a section through a valve unit before a bag is welded on and inserted into a plastic container,

Fig. 3 einen Schnitt durch einen Ventilkolben,3 shows a section through a valve piston,

Fig. 4 eine Draufsicht auf den Ventilkolben gemäss Fig. 3,4 shows a plan view of the valve piston according to FIG. 3,

Fig. 5 einen Schnitt durch ein geschlossenes Ventil,5 shows a section through a closed valve,

Fig. 6 einen Schnitt durch ein geöffnetes Ventil gemäss Fig, 3,6 shows a section through an open valve according to FIG. 3,

Fig. 7 eine Ansicht eines Ausführungsbeispiels eines ge- schweissten Beutels vor dessen Füllung,7 is a view of an embodiment of a welded bag before it is filled,

Fig. 8 eine Seitenansicht dieses Beutels, der an einem Ven¬ til befestigt ist,8 is a side view of this bag, which is attached to a valve,

Fig. 9 einen Schnitt durch einen in einem Plastikrohr gela¬ gerten Metallkern vor dem Schweissen eines Beutels,Fig. 9 shows a section through a siege in a plastic tube gela ¬ metal core prior to welding a bag

Fig. 10 einen Schnitt durch den Erfindungsgegenstand gemäss Fig. 9, zwischen zwei Schweissbacken gelagert, Fig. 11 eine Teilansicht eines Beutels nach Aufschweissen auf das Plastikrohr gemäss Fig. 9 und 10,10 shows a section through the subject matter of the invention according to FIG. 9, mounted between two welding jaws, 11 is a partial view of a bag after welding onto the plastic tube according to FIGS. 9 and 10,

Fig. 12 eine Ansicht eines Ventils, bei dem der Ventilkörper zum Direktaufschweissen eines Beutels vorgesehen ist,12 is a view of a valve in which the valve body is provided for the direct welding of a bag,

Fig. 13 eine perspektivische Ansicht des Ventilkörpers wie bildlich in Fig. -12 dargestellt, zwischen zwei Schweissbac- ken,13 shows a perspective view of the valve body, as shown in FIG. 12, between two welding blocks,

Fig. 14 eine Draufsicht auf einen Beutel nach Schweissung auf einen Ventilkörper gemäss Fig. 12,14 shows a plan view of a bag after welding onto a valve body according to FIG. 12,

Fig. 15 eine Teilansicht eines Beutels, nach Aufschweissen auf den 'Ventilkörper gemäss Fig. 12,Fig. 15 is a partial view of a bag according to the 'valve body by welding on Fig. 12,

Fig. 16 eine Ansicht einer Ventileinheit, einen gefalteten Beutel tragend,16 is a view of a valve unit carrying a folded bag,

Fig. 17 einen Schnitt durch eine Metalldose mit stark ver- grössertem Dosenhals mit einem Metallventilteller,17 shows a section through a metal can with a greatly enlarged can neck with a metal valve disc,

Fig. 18 einen Schnitt durch den Hals einer Plastikdose mit stark vergrössertem Dosenhals mit einem Metallventilteller,18 shows a section through the neck of a plastic can with a greatly enlarged can neck with a metal valve disc,

Fig. 19 einen Schnitt durch eine Ventileinheit für viskose Produkte, wie Oele, Cremen, Pasten, Gels, usw.19 shows a section through a valve unit for viscous products, such as oils, creams, pastes, gels, etc.

Die Fig. 1 zeigt eine erfindungsgemässe Vorrichtung in ihrer Gesamtheit. Der Behälter 1, hier vorzugsweise aus PET (Poly¬ äthylen Terephtalat) , zeigt einen halbkugelförmigen Boden 2, der zum Stehen mit der Bodenkappe 3 versehen ist. Er enthält den Beutel 4, in dem das Produkt 5 gelagert ist. Der Beutel 4 ist auf den Ventilkörper 6 aufgeschweisst, der am Plastik¬ ventilteller 7 befestigt ist und enthält den Kolben 8, der mittels der Feder 9 stark gegen die Gummidichtung 10 ge¬ drückt wird und teilweise in diese eindringt. Der Plastik¬ ventilteller 7 ist mit der Bohrung 11 versehen, die, wenn der Behälter 1 unter Druck steht, mittels der Gummidichtung 12 verschlossen ist, wobei diese mit dem Flansch 13 des Ven¬ tilkörpers 6 gehalten wird, wenn der Behälter 1 noch nicht unter Druck steht. Der Kolben 8 trägt den Sprühkopf 14. Um den Behälter 1 hermetisch zu verschliessen und somit jegli¬ chen Druckverlust, zu vermeiden, ist der Plastikventilteller 7 mit der Ringmembran 17 und der Doppelringrippe 18 verse¬ hen, wobei die Ringmembran 17 den Dosenhals 19 und die Ring¬ rippe 18 die Ringnut 20 verschliessen. Dabei werden die Ringmembran 17 und die Ringrippe 18 mittels dem Schnappver- schluss 21 dichtend in ihre erwähnten Sitze eingezogen. Letztendlich verhindert die Verschlusshülse 22 ein Oeffnen des Schnappverschlusses 21 und sichert, dank ihrer Ver- schweissung 23 mit dem Behälter 1, dessen hermetischen -Ver- schluss. Die Figur 2 zeigt, dank ihrer Vergrösserung, vor¬ stehende Einzelheiten im Detail. Der Ventilkörper 6 ist, wie mit den Fig. 12 - 15 näher erläutert, mit Seitenrippen 15 versehen, welche nach Aufschweissen des Beutels 4 mittels der Schweissflache 24 die Wülste 16 bilden. Die Unterseite der Verschlusshülse 22 weist eine Ringnut 25 auf, welche ein Verdecken der Bohrung 11 verhindert, sodass diese Bohrung von aussen nicht sichtbar ist, aber dennoch über sie von aussen der Behälter 1 unter Druck gesetzt werden kann, wobei dann die Dichtung 12 als Rückschlagventil arbeitet. Schliesslich ist die erfindungsgemässe Vorrichtung mit der Ventilkappe 26 geschlossen. Die Vorrichtung wird wie folgt montiert und gefüllt:1 shows a device according to the invention in its entirety. The container 1, here preferably made of PET (polyethylene terephthalate), has a hemispherical base 2 which is provided with the base cap 3 for standing. It contains the bag 4 in which the product 5 is stored. The bag 4 is welded onto the valve body 6 which is attached to the plastic valve plate 7 and contains the piston 8 which is pressed strongly against the rubber seal 10 by means of the spring 9 and partially penetrates into it. The plastic valve plate 7 is provided with the bore 11, which, when the container 1 is under pressure, is closed by means of the rubber seal 12, which is held with the flange 13 of the valve body 6 when the container 1 is not yet under There is pressure. The piston 8 carries the spray head 14. In order to hermetically seal the container 1 and thus to avoid any loss of pressure, the plastic valve disk 7 is provided with the ring membrane 17 and the double ring rib 18, the ring membrane 17 being the can neck 19 and Ring rib 18 close the ring groove 20. The ring membrane 17 and the ring rib 18 are drawn into their mentioned seats in a sealing manner by means of the snap closure 21. Ultimately, the closure sleeve 22 prevents the snap closure 21 from opening and, thanks to its welding 23 to the container 1, secures its hermetic closure. Thanks to its enlargement, FIG. 2 shows the above details in detail. As explained in more detail with FIGS. 12-15, the valve body 6 is provided with side ribs 15 which form the beads 16 after the bag 4 has been welded on by means of the welding surface 24. The underside of the closure sleeve 22 has an annular groove 25, which prevents the bore 11 from being covered, so that this bore is not visible from the outside, but can nevertheless be used to pressurize the container 1 from the outside, the seal 12 then serving as a check valve is working. Finally, the device according to the invention is closed with the valve cap 26. The device is assembled and filled as follows:

Die Ventileinheit A trägt, wie in Fig. 16 gezeigt, einen gefalteten Beutel 4, der in Ventilhöhe mit einem Papierring 79 und am gegenüberliegenden Ende mit dem Papierring 80 gefaltet gehalten wird. Die Papierdicke der Ringe 27 und 28 ist so gewählt, dass sie beim Füllen des Beutels 4 im Innern des Behälters 1 reissen und so das Entfalten des Beutels 4 gewährleisten. Die Ventileinheit A mit dem gefalteten Beutel 4, der sich praktisch wie ein "normales" Steigrohr verhält und von jeder handelsüblichen Füllmaschine sortiert werden kann, wird maschinell in den Behälter 1 eingeführt, bis das eine Teil des Schnappverschlusses 21 in das entsprechende Teil des Dosenhalses 19 einrastet, wonach dann, ebenfalls maschinell, die Verschlusshülse 22 auf den Dosenhals 19 in Höhe 23 geschweisst wird. Dies verhindert nicht nur ein Aus¬ rasten des Schnappverschlusses 21, sondern gewährt zusätz¬ lich, dank einer Ultraschallverschweissung, mit der die Ver¬ schlusshülse 22, die aus demselben Material wie der Dosen¬ hals 19 besteht, homogen mit diesem verbunden wird, ein per¬ fektes Abdichten der erfindungsgemässen Vorrichtung. Hinzu kommt noch ein Abdichten, das dadurch entsteht, dass die Ringmembran 17 spannend in den Dosenhais 19 und die Doppel¬ ringrippe 18 spannend in die Ringnut 20 eingeführt werden. Diese Lösung des Abdichtens ist wichtig, um jeglichen Druck- luftverlust zu vermeiden, der dazu führen würde, dass man¬ gels Ausstosskraft nicht alles Produkt 5 aus dem Behälter 1 austreten kann. Vor Aufsetzen des Sprühkopfes 14 oder eines anderen Ausgabeelements wird der Beutel 4 über den Ventil¬ körper 6 durch Wegdrücken des Kolbens 8 von der Dichtung 10 mit dem Produkt 5 gefüllt. Danach wird nach Aufsetzen eines Spezialfüllkopfes auf die Verschlusshülse 22 Druckluft über die Bohrung 11 des Ventiltellers 7 in den Behälter 1 einge¬ führt, welche dann das sich im Beutel 4 befindliche Produkt unter Druck setzt. Nach Aufsetzen des Sprühkopfes 14 oder, je nach Produktbeschaffenheit, eines anderen Ausgabeelemen¬ tes, ist die erfindungsgemässe Vorrichtung einsatzbereit. Letztendlich wird sie mit der Ventilkappe 26 verschlossen.The valve unit A carries, as shown in FIG. 16, a folded bag 4 which is kept folded at the valve height with a paper ring 79 and at the opposite end with the paper ring 80. The paper thickness of the rings 27 and 28 is chosen so that it is inside the bag 4 when it is filled of the container 1 tear and thus ensure the unfolding of the bag 4. The valve unit A with the folded bag 4, which behaves practically like a "normal" riser pipe and can be sorted by any commercially available filling machine, is inserted mechanically into the container 1 until one part of the snap closure 21 into the corresponding part of the can neck 19 engages, after which the closure sleeve 22 is then also welded mechanically onto the can neck 19 at height 23. This not only prevents the snap closure 21 from disengaging, but also allows a per, thanks to an ultrasound welding, with which the closure sleeve 22, which is made of the same material as the can neck 19, is homogeneously connected to it ¬ perfect sealing of the device according to the invention. Added to this is sealing, which is created by the ring membrane 17 being inserted in the canned shark 19 and the double ring rib 18 in the ring groove 20. This sealing solution is important in order to avoid any loss of compressed air which would lead to the fact that not all of the product 5 can escape from the container 1 due to a lack of ejection force. Before attaching the spray head 14 or another dispensing element, the bag 4 is filled with the product 5 via the valve body 6 by pushing the piston 8 away from the seal 10. After placing a special filling head on the closure sleeve 22, compressed air is introduced into the container 1 through the bore 11 of the valve plate 7, which then pressurizes the product in the bag 4. After placing the spray head 14 or, depending on the nature of the product, another dispensing element, the device according to the invention is ready for use. Ultimately, it is closed with the valve cap 26.

Das vorstehend beschriebene Nachfliessen von Produkt aus dem Ventil, auch nach Ventilverschluss, wird dank dem erfin¬ dungsgemässen Kolben 8 eliminiert. Dieser ist mit den Ring¬ rippen 27> 28 und 29 versehen, wodurch die Ringnuten 30 und 31 entstehen. Wie in Fig. 3 dargestellt, dringen die Ring¬ rippen 27, 28 und 29 in die Dichtung 10 ein, wodurch diese in die Ringnuten 30 und 31 eingedrückt wird, sodass ein so¬ fortiges Schliessen der Ventileinheit A erreicht wird.The above-described reflow of product from the valve, even after the valve has been closed, is eliminated thanks to the piston 8 according to the invention. This is provided with the ring ribs 27 > 28 and 29, whereby the ring grooves 30 and 31 arise. As shown in FIG. 3, the ring ribs 27, 28 and 29 penetrate into the seal 10, as a result of which it is pressed into the ring grooves 30 and 31, so that the valve unit A is closed immediately.

Wird die Ventileinheit A mit Druckluft als Treibkraft einge¬ setzt, so braucht sie, um einen möglichst hohen Schub, spe¬ ziell nach Druckminderung, zu geährleisten, grosse Quer¬ schnitte und eine- ehrzahl vonDurchflusskanälen 32 und 33, wie in Fig. 4 gezeigt.If the valve unit A is used with compressed air as the driving force, it needs large cross-sections and a large number of flow channels 32 and 33, as shown in FIG. 4, in order to ensure the greatest possible thrust, especially after the pressure has been reduced .

Zur Verwendung des erfindungsgemässen Ventils für -Aerosoldo¬ sen, die Flüssiggase verwenden, deren Prozentsatz wegen zu hohem Dampfdruck herabgesetzt werden müssen oder deren Menge man aus Sicherheitsgründen herabsetzen will, wodurch es dann wie beschrieben zu einem Nachfliessen nach Ventilschliessung kommt, ist eine Konzipierung wie in Fig. 5 und 6 darge¬ stellt, nötig. Die erfindungsgemässe Ventileinheit A besteht aus dem Ventilkörper 34, der mit dem Steigrohrhalter 35 ver¬ sehen ist, dem Kolben 36 mit dem Stift 37, der Druckfeder 38, der Innendichtung 39, dem Ventilteller 40 mit der Behäl¬ terdichtung 41 und dem Kolbenrohr 42. Der Ventilteller 40 ist mit der Bohrung 43 versehen, die, wenn ein mit der Ven¬ tileinheit A verschlossener Behälter unter Druck steht, mit¬ tels der Dichtungsscheibe 44 abgedichtet wird, welche mit dem Flansch 45 gehalten wird. Der Boden des Ventilkörpers 34 ist mit Rippen 46 versehen, auf denen die Feder 38 aufliegt. Dadurch kann das in den Ventilkörper eindringende Produkt unterhalb der Feder 38 zwischen den Rippen 46 in Richtung der Dichtung 39 gelangen. Der Kolben 36 trägt die Feder 38. Er weist Führungsrippen 47 auf und ist mit Rippen und Nuten in Fig. 3 vergrössert dargestellt. Die Kimme 48 des Ventil¬ körpers 34 ist mit Senkrechtnuten 49 versehen, welche ge¬ statten, eine Begasung eines mit der Ventileinheit A ge¬ schlossenen Behälters zwischen dem Ventilteller 40 und der Dichtung 39 vorzunehmen, ohne Oeffnung des Ventils. Der Basisdurchmesser des Stiftes 37 ist etwas kleiner als der Innendurchmesser des Kolbenrohrs 42, sodass ein Spalt 50 entsteht. Parallel zu dem Stift 37 befindet sich die Nut 51, welche in die zu ihr senkrecht stehende Nut 52 einmündet. Ein Produkt kann also bei geöffnetem Ventil lediglich über die Nuten 51 und 52 und den Spalt 50 austreten. Da diese Durchgänge vorbestimmte Querschnitte haben, weist das erfin- dungsgemässe Ventil eine kalibrierte Ausstossmenge pro Zeit¬ einheit und zwar .unabhängig von dem vom Kolben 36 zurückge¬ legten Weg, auf.For the use of the valve according to the invention for aerosol doses which use liquefied gases, the percentage of which must be reduced due to excessively high vapor pressure or the amount of which one wants to reduce for safety reasons, as a result of which afterflow after valve closure occurs, a design is as in 5 and 6 Darge¬ represents necessary. The valve unit A according to the invention consists of the valve body 34, which is provided with the riser pipe holder 35, the piston 36 with the pin 37, the compression spring 38, the inner seal 39, the valve plate 40 with the container seal 41 and the piston tube 42. The valve disk 40 is provided with the bore 43, which, when a container closed with the valve unit A is under pressure, is sealed by means of the sealing disk 44, which is held by the flange 45. The bottom of the valve body 34 is provided with ribs 46 on which the spring 38 rests. As a result, the product penetrating into the valve body can reach below the spring 38 between the ribs 46 in the direction of the seal 39. The piston 36 carries the spring 38. It has guide ribs 47 and is shown enlarged in FIG. 3 with ribs and grooves. The rear sight 48 of the valve body 34 is provided with vertical grooves 49, which allow gas to be gassed into a container closed with the valve unit A between the valve plate 40 and the seal 39, without opening the valve. The The base diameter of the pin 37 is slightly smaller than the inside diameter of the piston tube 42, so that a gap 50 is created. Parallel to the pin 37 is the groove 51, which opens into the groove 52 perpendicular to it. A product can therefore only emerge through the grooves 51 and 52 and the gap 50 when the valve is open. Since these passages have predetermined cross sections, the valve according to the invention has a calibrated output quantity per unit of time, specifically regardless of the distance traveled by the piston 36.

Die Verwendung eines kleinen Prozentsatzes von Flüssiggas, z.B. FREON 22, führt zu einem Ausstossdruck von 1,5 bar bei 20°C. Trotz der Verwendung einer, im europäischen Patent Nr. 0000688 beschriebenen Spritzdüse, die einen sehr hohen "me- chanical break-up" Effekt hat, ist die Zerstäubungsqualität, trotz Vorhandensein eines Flüssiggasanteils im ausgestoss- enen Produdkt, noch zu nass, weil dieser Flüssiggasanteil für die beschriebene explosionsartige Verdunstung zu niedrig ist. Mit dem erfindungsgemässen Ventil kann man nunmehr zu einer "trockeneren" Zerstäubung kommen.The use of a small percentage of liquid gas, e.g. FREON 22, leads to an ejection pressure of 1.5 bar at 20 ° C. Despite the use of a spray nozzle described in European Patent No. 0000688, which has a very high "mechanical break-up" effect, the atomization quality, despite the presence of a liquid gas component in the product being ejected, is still too wet because of this liquid gas component is too low for the described explosive evaporation. With the valve according to the invention, "drier" atomization can now be achieved.

Bekanntlich bleibt Flüssiggas unter einem bestimmten, auf es wirkenden Druck, flüssig und vergast sich erst, wenn dieser Druck, z.B. beim Entleeren eines Behälters, kleiner wird. Es ist auch bekannt, dass man mit kleinen Durchflussquerschnit¬ ten ein unter Druck stehendes Produdkt beschleunigen kann und dadurch seinen Druck mindert, was bedeutet, dass je nach Beschleunigung des Produktes, dessen Druck unter denjenigen Druck fällt, der das Gas flüssig hält, sodass es sich dank dieser Beschleunigung vergasen kann.As is known, liquid gas remains liquid under a certain pressure acting on it and only gasifies when this pressure, e.g. when emptying a container, becomes smaller. It is also known that a product under pressure can be accelerated with small flow cross-sections and thereby reduces its pressure, which means that depending on the acceleration of the product, its pressure drops below the pressure that keeps the gas liquid, so that it can gasify thanks to this acceleration.

Dies ist in der Fig. 6 dargestellt. Drückt man auf das Kol¬ benrohr 42, so entfernt sich der Kolben 36 von der Dichtung 39, wodurch das unter Druck stehende Produkt 53 über die Nuten 51 und 52 in den Spalt 50 gelangen kann. Da der Quer- schnitt des Spaltes 50 so bemessen ist, dass das dort flies¬ sende Produkt beschleunigt wird, verliert es an Druck und ein Teil des Flüssiggasanteils kann sich vergasen, wie mit den Bläschen 54 dargestellt. Somit kommt also ein Gemisch von Aktivprodukt (Alkohol, Parfüm etc.) Flüssiggas und gas¬ förmigem Gas in die Spritzdüse, welche dann das Aktivprodukt mechanisch zerstäubt, wobei danach die explosionsartige Ver¬ dunstung des Flüssiggasanteils, unterstützt von dem gasför¬ migen (Bläschen 54) Gasanteil, die mechnische Zerstäubung so verfeinert, dass die TröpfchengrÖsse so fein wird, dass es zu einer schnellen Verdunstung kommt, der Spray also als nicht "nass" angesehen wird.This is shown in FIG. 6. If one presses on the piston tube 42, the piston 36 moves away from the seal 39, as a result of which the product 53 under pressure can reach the gap 50 via the grooves 51 and 52. Since the cross cut of the gap 50 is dimensioned such that the product flowing there is accelerated, it loses pressure and part of the liquid gas portion can gasify, as shown by the bubbles 54. Thus, a mixture of active product (alcohol, perfume, etc.) liquid gas and gaseous gas enters the spray nozzle, which then atomizes the active product mechanically, after which the explosive evaporation of the liquid gas portion, supported by the gaseous (bubbles 54 ) Gas fraction that refines the mechanical atomization so that the droplet size becomes so fine that rapid evaporation occurs, so the spray is not considered to be "wet".

Normalerweise wird das Flüssiggas über das Ventil in den Aerosolbehälter eingeführt, wobei man maschinell das Ventil öffnet, es sei denn, man verfügt über eine Spezialbegasungs- vorrichtung, welche das Flüssiggas, wie beschrieben, zwi¬ schen Ventilteller 40 und Dichtung 39 über die Nuten 49 in die Dose einführt. Da das erfindungsgemässe Ventil zu seiner beschriebenen Funktion über einen sehr kleinen Durchfluss¬ querschnitt verfügen muss, nimmt das Begasen sehr viel Zeit in Anspruch, was für eine Massenprodudktion unerwünscht ist. Dank der Bohrung 43 und der Dichtungsscheibe 44 kann die Begasung schnell erfolgen.The liquid gas is normally introduced into the aerosol container via the valve, the valve being opened mechanically, unless a special gassing device is used which, as described, the liquid gas between the valve plate 40 and the seal 39 via the grooves 49 inserted into the can. Since the valve according to the invention must have a very small flow cross-section for its described function, the gassing takes a lot of time, which is undesirable for mass production. Thanks to the bore 43 and the sealing washer 44, the gassing can take place quickly.

Wie einleitend beschrieben gibt es im Handel verschiedene Zweikammerdosen, in denen das Produkt in einem flexiblen Innenbehälter gelagert ist, welche entweder durch Flüssiggas in einem starren Behälter oder komprimierten Gasen wie Luft oder Stickstoff zusammengedrückt werden, sodass bei Ventil- Öffnung das sich im flexiblen Behälter befindliche Produkt ausgestossen wird.As described in the introduction, there are various two-chamber cans in which the product is stored in a flexible inner container, which is compressed either by liquid gas in a rigid container or compressed gases such as air or nitrogen, so that when the valve is opened, it is in the flexible container Product is ejected.

Geht es bei Verwendung von Flüssiggas darum, dieses nicht mit dem Produkt in Kontakt zu bringen, aber trotzdem einen konstanten Druck zur Verfügung zu haben, so zwingt die Ver- wendung von komprimierten Gasen dazu, jeglichen Druckverlust zu vermeiden. Da aber die handelsüblichen flexiblen Behälter kostspielig sind, muss eine billigere Lösung gefunden wer¬ den.If the use of liquefied gas is about not bringing it into contact with the product, but still having a constant pressure available, the use of compressed gases to avoid any pressure loss. However, since the commercially available flexible containers are expensive, a cheaper solution has to be found.

Die Fig. 7 und 8 stellen eine solche Lösung dar. Am Beutel¬ träger 55 des Ventilkörpers 56 ist der Nippel 57 des Beutels 58 befestigt, wobei er dort mittels einem nicht dargestell¬ ten Schnappverschluss an einem Abspringen verhindert wird. Der Nippel 57 ist mit der Scheibe 59 versehen, welche kon¬ zentrisch verlaufende Nuten 60 aufweist. Es besteht aus dem¬ selben Plastikmaterial zum Beispiel Polyäthylen oder Poly¬ propylen, wie die Innenseite der zum Zusammenschweissen vor¬ gesehenen Folien, sodass die Scheibe 59 mit dem Folienmate¬ rial verschweissbar ist. Der Beutel 58 kann aus einer Ver¬ bundfolie hergestellt werden, bei der zwischen zwei Plastik¬ folien eine Alumimiumfolie liegt, sodass mit einer Alumi¬ niumfoliendicke von 0,012 mm ein Migrieren von Duftstoffen oder Lu tsauerstoff vermieden wird. Diese Lösung kommt hauptsächlich bei der Verwendung des Beutels 58 zur Lagerung von Parfüms oder Lebensmitteln und Medikamenten in Frage, bei denen das Migrieren, wie vorstehend beschrieben, vermie¬ den werden muss. Zur Herstellung des Beutels wird eine Pla¬ stikfolie mit einem Loch versehen, durch welches der Nippel 57 von der als Innenseite vorgesehenen Folienseite durchge¬ steckt wird, sodass die Scheibe 59, weil aus demselben Mate¬ rial wie die Beutelinnenseite, mit ihr verschweisst werden kann. Danach wird die Folie gefaltet und mittels Wärme mit der Schweissflache 61 versehen, sodass ein Beutel entsteht.7 and 8 represent such a solution. The nipple 57 of the bag 58 is fastened to the bag carrier 55 of the valve body 56, where it is prevented from jumping off by means of a snap closure (not shown). The nipple 57 is provided with the washer 59, which has concentrically extending grooves 60. It consists of the same plastic material, for example polyethylene or polypropylene, as the inside of the foils intended to be welded together, so that the disc 59 can be welded to the foil material. The bag 58 can be produced from a composite film in which there is an aluminum foil between two plastic foils, so that a migration of fragrances or air oxygen is avoided with an aluminum foil thickness of 0.012 mm. This solution is mainly used when using the bag 58 for storing perfumes or foods and medicaments, in which migration, as described above, must be avoided. To produce the bag, a plastic film is provided with a hole through which the nipple 57 is inserted from the film side provided as the inside, so that the disc 59, because it is made of the same material as the inside of the bag, can be welded to it . The film is then folded and provided with the welding surface 61 by means of heat, so that a bag is produced.

Die Fig. 9, 10 und 11 zeigen eine andere Ausführungsform eines erfindungsgemässen Beutels. Dabei handelt es sich um ein Rohrstück 62, das einerseits zum Aufschweissen der Fo¬ lien aus demselben Material dient und andererseits zu einem Nippel 63 wird, der auf ein nicht dargestelltes Ventil, wie auch vorstehend beschrieben, aufgesteckt wird. Will man zwei Folien auf ein Rohrteil wärmeverschweissen, so entstehen entlang den Treffstellen der Folien am Rohrstück 62 Längska¬ näle, welche einen so hergestellten Beutel undicht lassen. Dieses Problem kann wie folgt gelöst werden: Die Wandstärke des Rohrstückes 62 soll vorzugsweise mindestens 1 mm betra¬ gen. Man führt in das Rohrstück 62 einen Metallkern 64 ein, dessen Durchmesser kleiner als der Innendurchmesser des Rohrstücks 62 ist. Nach Einlegen des so vorbereiteten Rohr¬ stücks 62 zwischen zwei Plastikfolien werden diese mit zwei Schweissbacken 65 und 66 eingeklemmt, welche jede eine Halb¬ kreisnut 67 aufweisen, deren Durchmesser kleiner sind als der Aussendurchmesser des Rohrstücks 62. Unter der Wärme der Schweissbacken 65 und 66 wird das Plastikmaterial der Innen¬ wand der Plastikfolien und des Rohrstücks flüssig und ver¬ formt sich zu Wülsten 68 und 69 und der Rest des Rohrstücks 62 legt sich an den Metallkern 64 an, sodass die Folien mit dem Rohrstück 62 homogen verbunden und die beschriebenen Längs anäle vermieden werden.9, 10 and 11 show another embodiment of a bag according to the invention. This is a piece of pipe 62 which, on the one hand, is used to weld the foils from the same material and, on the other hand, becomes a nipple 63 which is attached to a valve, not shown, as also described above. Do you want two Foils are heat-welded to a tube part, so longitudinal channels are formed along the points of contact of the foils on the tube piece 62, which leave a bag produced in this way leaking. This problem can be solved as follows: The wall thickness of the pipe section 62 should preferably be at least 1 mm. A metal core 64 is introduced into the pipe section 62, the diameter of which is smaller than the inside diameter of the pipe section 62. After inserting the tube piece 62 prepared in this way between two plastic foils, they are clamped with two welding jaws 65 and 66, each of which has a semicircular groove 67, the diameter of which is smaller than the outer diameter of the tube piece 62. Under the heat of the welding jaws 65 and 66 the plastic material of the inner wall of the plastic foils and the tube piece becomes liquid and deforms to beads 68 and 69 and the rest of the tube piece 62 lies against the metal core 64, so that the foils are homogeneously connected to the tube piece 62 and the longitudinal described canals are avoided.

Will man einen erfindungsgemässen Beutel aber dirket auf eine Ventileinheit A setzen, wie in den Fig. 12, 13, 14 und 15 illustriert, so kann man keinen Metallkern 64 verwenden. Um die beschriebenen Längskanäle zu vermeiden, ist der Ven¬ tilkörper 70 mit Seitenflügeln 71 und 72 zu versehen. Nach Einlegen des Ventilkörpers 70 zwischen zwei Plastikfolien, werden diese zwischen zwei Schweissbacken 73 und 74 einge¬ klemmt, welche jede eine Halbkreisnut 75 aufweist, deren Durchmesser kleiner sind als der Aussendurchmesser des Ven¬ tilkörpers 70. Unter der Wärme der Schweissbacken verformt sich der Ventilkörper 70 so, dass die Seitenflügel 71 und 72 zwischen die Folien fliessen und dort die vorbeschriebenen Längskanäle vermeiden. Dabei entstehen die Wülste 76 und 77, welche zusätzlich das Dichten des Beutels verbessern. Diese Lösung ist insofern äusserst vorteilhaft, als sie einerseits den Arbeitsgang des Aufsteckens des Beutels auf eine Venti¬ leinheit A vermeidet und andererseits eine grössere Beutel- länge gewährleistet, sodass der Beutel ein grösseres Füllvo¬ lumen erhält.However, if a bag according to the invention is to be placed directly on a valve unit A, as illustrated in FIGS. 12, 13, 14 and 15, a metal core 64 cannot be used. In order to avoid the longitudinal channels described, the valve body 70 is to be provided with side wings 71 and 72. After inserting the valve body 70 between two plastic foils, these are clamped between two welding jaws 73 and 74, each of which has a semicircular groove 75, the diameter of which is smaller than the outer diameter of the valve body 70. The valve body deforms under the heat of the welding jaws 70 in such a way that the side wings 71 and 72 flow between the foils and there avoid the longitudinal channels described above. This creates beads 76 and 77, which additionally improve the sealing of the bag. This solution is extremely advantageous in that, on the one hand, it avoids the work of pushing the bag onto a valve unit A and, on the other hand, guaranteed length, so that the bag receives a larger filling volume.

Diese vorstehenden Lösungen der Verwendung eines geschweiss¬ ten, sehr flexiblen Beutels, haben den Vorteil, dass sie von den existierenden Aerosolfüllmaschinen sortiert und in übli¬ cher Weise in die Dosen eingelegt werden können, ohne dass man eine Abänderung an den Maschinen vornehmen muss. Die Fig. 16 zeigt einen erfindungsgemässen Beutel 78, der ak- kordeonförmig gefaltet und auf die Ventileinheit A ge- schweisst ist, wobei der Beutel 78 in Ventilhöhe mit dem Papierring 79 und am gegenüberliegenden Ende mit dem Papier¬ ring 80 versehen ist, welche ein Entfalten des Beutels 79 verhindern, sodass der Beutel 78 so starr wie ein normales Steigrohr bleibt und, zwar überdimensioniert, in die han¬ delsüblichen Dosen eingeführt werden kann. Die Papierring¬ stärke ist so gewählt, dass sie einen Transport und eine Aussortierung aushalten, aber beim Füllen des Beutels 78, wenn im Innern der Dose untergebracht, zerreissen, sodass sich der Beutel 78 voll entfalten kann. Diese Lösung hat auch den Vorteil, dass sich durch das Falten Knicke bilden, die zu feinen, senkrechten Rillen führen, die auch nach Ent¬ falten bleiben und verhindern, dass die beiden geschweissten Folien nach einer gewissen ausgestossenen Produktmenge in Ventilhöhe kollabieren, sodass kein Produkt mehr ausgesto- ssen werden kann.These above solutions of using a welded, very flexible bag have the advantage that they can be sorted by the existing aerosol filling machines and can be inserted into the cans in the usual way, without having to make any changes to the machines. 16 shows a bag 78 according to the invention, which is folded accordion-shaped and welded onto the valve unit A, the bag 78 being provided at the valve height with the paper ring 79 and at the opposite end with the paper ring 80, which is a Prevent the bag 79 from unfolding so that the bag 78 remains as rigid as a normal riser pipe and, although oversized, can be inserted into the customary cans. The paper ring thickness is selected so that it can withstand transport and sorting, but tear when the bag 78 is filled, if it is accommodated inside the can, so that the bag 78 can fully unfold. This solution also has the advantage that the folds form kinks which lead to fine, vertical grooves which remain even after unfolding and prevent the two welded foils from collapsing at valve height after a certain amount of product has been expelled, so that no product more can be emitted.

Die Verwendung von komprimierten Gasen als Treibkraft führt zu einem anderen, vorstehend beschriebenen Problem. Das Auf¬ setzen und Befestigen eines Ventiltellers auf den Dosenhals verlangt eine sehr hohe Präzision, die aber bei Verwendung von komprimierten Gasen oft nicht ausreicht, ein Leck zwi¬ schen Dosenhals 81 und Ventileinheit A zu vermeiden, wie es Versuche gezeigt haben. Es gibt auf dem Markt Dosen 82, Fig. 17, die auf der Kimme des Dosenhalses 81 mit einer gefrästen Ringnut versehen sind, in welche eine Gummidichtung eingezo-The use of compressed gases as a driving force leads to another problem described above. Placing and attaching a valve plate to the can neck requires a very high level of precision, which, however, is often insufficient when using compressed gases to avoid a leak between can neck 81 and valve unit A, as tests have shown. There are cans 82, FIG. 17 on the market, which are provided on the rear of the can neck 81 with a milled ring groove into which a rubber seal is inserted.

ERSATZBLATT gen wird. Die Erfahrung zeigt, dass auch dies keine absolute Lösung des Problems darstellt. Erfingungsgemäss wird dies so gelöst, dass der Dosenhals 81 nicht auf der Kimme, sondern in einem Winkel zu ihr nach aussen stehend, zwei Ringrillen 83 und 84 aufweist, sodass dadurch mehrere Ecken 85 entste¬ hen, welche in die Gummidichtung eindringen, sodass diese in die Ringrillen 83 und 84 eingezwängt werden und so ein si¬ cheres Abdichten, auch bei Abwesenheit einer absoluten Prä¬ zision, gewährleisten.REPLACEMENT LEAF will. Experience shows that this is also not an absolute solution to the problem. According to the invention, this is solved in such a way that the can neck 81 has two ring grooves 83 and 84, not on the rear sight, but at an angle to the outside thereof, so that several corners 85 are formed which penetrate into the rubber seal, so that this the ring grooves 83 and 84 are constrained and thus ensure reliable sealing, even in the absence of absolute precision.

D.ie Fig. 18 zeigt den Dosenhals einer Plastikdose 87, wel¬ cher treppenför ige Ringstufen 88 und 89 hat, sodass Ecken 90 entstehen, welche beim Aufrollen des Ventiltellers 91 in die Gummidichtung 92 eindringen'und so einen sicheren, leck¬ freien Verschluss der Dose 87 sichern.18 shows the can neck of a plastic can 87, which has stair-shaped ring steps 88 and 89, so that corners 90 are formed which penetrate into the rubber seal 92 when the valve disk 91 is rolled up, and thus provide a secure, leak-free closure secure the can 87.

Die Fig. 19 zeigt eine Ventileinheit A, die speziell zur Ausgabe von viskosen Produkten dient. Der Ventilkörper 93 drückt eine Dichtung 94 aus elastischem Material, die eine nach unten gerichtete ogivenförmige Warze trägt, in den Ven- tllteller 96. Die Warze 95 ist mit einem Schnitt 97 verse¬ hen, der* mittels dem von den Pfeilen 98 dargeteilten Druck geschlossen wird. Der Ausgabekopf 99 ist mit dem Rohrstück 100 versehen, das in der Warze 95 eingesteckt ist und trägt den Diffusor 102, ebenfalls aus elastischem Material. Bewegt man den Ausgabekopf 99 nach unten, so öffnen sich, wie ge¬ strichelt dargestellt, der Schnitt 97 der Warze 95 und der Schnitt 103 des Diffusors 102, sodass Produkt ausgestossen werden kann. Lässt man den Ausgabkopf los, so drückt der mit den Pfeilen 98 dargestellte Druck den Schnitt 97 wieder zu und, weil die Warze 95 aus elastischem Material ist, das wie eine Feder wirkt, drückt es das Rohrstück 100 in seine Aus¬ gangsstellung zurück. Sicherheitshalber kann zu dieser Zu¬ rückstellung eine Metallfeder 104 vorgesehen werden. Durch das Oeffnen des Schnittes 97 und der dadurch möglichen Pro¬ duktausgabe wird der Schnitt 103 des Diffusors 102 geöffnet, der, wenn der Produkteausstossdruck nachlässt, sich wieder schliesst, sodass das sich im Ausgabekopf 99 befindliche, nicht dargestellte Produkt vor der Aussenluft geschützt ist und nicht austrocknen kann. Im Ausgabekopf 99 ist eine Re¬ gelscheibe 105, wie im Patent Nr. DD 250 694 A5 der Deut¬ schen Demokratischen Republik beschrieben, untergebracht, welche, trotz Druckminderung bei der Verwendung von kompri¬ mierten Gasen eine zumindest annähernd konstant bleibende Ausstossmenge pro Zeiteinheit gewährleistet. Bei Verwendung von Flüssiggasen, die, um den flexiblen Beutel liegend, die¬ sen zusammendrücken, ist die Verwendung einer Regelscheibe 105 ebenfalls vorteilhaft, weil Temperaturveränderungen zu starken Druckschwankungen und dadurch zu veränderlichen Aus- stossmengen pro Zeiteinheit führen.19 shows a valve unit A which is used especially for dispensing viscous products. The valve body 93 presses a seal 94 made of elastic material, which carries an ogive-shaped wart directed downward, into the valve plate 96. The wart 95 is provided with a cut 97, which * is closed by means of the pressure indicated by the arrows 98 becomes. The dispensing head 99 is provided with the tube piece 100 which is inserted into the wart 95 and carries the diffuser 102, also made of elastic material. If the delivery head 99 is moved downward, the cut 97 of the wart 95 and the cut 103 of the diffuser 102 open, as shown in broken lines, so that product can be ejected. If you let go of the dispensing head, the pressure shown by the arrows 98 closes the cut 97 again and, because the wart 95 is made of elastic material which acts like a spring, it pushes the tube piece 100 back into its starting position. As a precaution, a metal spring 104 can be provided for this reset. By opening the cut 97 and the product output possible thereby, the cut 103 of the diffuser 102 is opened, which closes again when the product ejection pressure subsides, so that the product (not shown) in the delivery head 99 is protected from the outside air and cannot dry out. Dispensing head 99 houses a regulating disk 105, as described in patent no. DD 250 694 A5 of the German Democratic Republic, which, despite the reduction in pressure when using compressed gases, ensures an output quantity per unit of time that remains at least approximately constant . When using liquefied gases which compress the flexible bag, the use of a regulating disk 105 is also advantageous because changes in temperature lead to strong pressure fluctuations and thereby to variable output quantities per unit of time.

Die vorstehenden beschriebenen und mit den Figuren der Zeichnung illustrierten Vorrichtungen sind nicht limitieren¬ de Ausführungsbeispiele der Erfindung. The devices described above and illustrated with the figures of the drawing are non-limiting exemplary embodiments of the invention.

Claims

PATENTANSPRÜCHE PATENT CLAIMS 1. Vorrichtung zur Lagerung und kontrollierten Abgabe von unter Druck stehenden Produkten, bestehend aus einem starren Aussenbehälter, einem flexiblen Innenbehälter, an einer Ven¬ tileinheit befestigt, einer Spritzdüse, oder, je nach Pro¬ duktbeschaffenheit, einem Diffusor, sowie, je nach dem ein¬ gesetzten Treibmittel, einen Ausstossmengenregler, dadurch gekennzeichnet, dass der Dόsenhals (19) mit Nuten (20, 83, 84), Ringrippen (27, 28, 29) oder treppenför igen Stufen (88, 89) versehen ist, dass, wenn der starre Behälter (1) aus Plastik ist, am Dosenhals (19) aussen eine Schnappver¬ schlussmöglichkeit (21) vorgesehen ist, dass ein Plastikven¬ tilteller (7) mit dem Schnappverschlussgegenstück (21) aus¬ gestattet ist, dass der Plastikventilteller (7) eine Ring¬ membran (17) und eine Doppelringrippe (18) aufweist, dass eine Verschlusshülse (22), aus demselben Plastikmaterial wie der starre Behälter (1) ist und mit diesem mittels Hochfre¬ quenz auf die Ringrippe (23) des Dosenhalses (19) ge- schweisst ist, dass Ventilteller sowohl aus Plastik (7) wie auch aus Metall (40) mit einer Bohrung (40) versehen sind, dass die Ventilkörper (6, 34), Auflagemöglichkeiten (13, 45) haben, auf denen Dichtungsscheiben (12, 44) liegen, welche die Bohrung (12, 44), wenn der starre Behälter (1) unter Druck steht, die Bohrung (12, 44) hermetisch verschliessen, dass die Ventilkörper (6, 93) mit Seitenflügeln (15) verse¬ hen sind, dass die mit Seitenflügeln versehenen Ventilkörper (6, 93) aus demselben Platikmaterial wie die Innenwand des flexiblen Innenbehälters (4) ist und mit .diesem mittels Wär¬ me verschweisst wird, dass der flexible Innenbehälter (4) aus einer gefalteten Plastikfolie mittels Wärmeschweissnäh- ten (24, 61) hergestellt ist, dass die Ventilkolben (8, 36) mindestens zwei, aber vorzugsweise drei Ringrippen (27, 28, 29) haben und dass eine Ventileinheit (A) für viskose Pro¬ dukte mit einer elastischen Dichtung (94) versehen ist, die eine Warze (95) trägt, dass diese Warze (95) einen Schnitt (97) aufweist, dass der Ausgabekopf (99) mit einem Rohrstück (100) ausgestattet ist, das in die Warze (95) eingeführt ist, dass der Ausgabekopf (99) einen Diffusor (102) aus ela¬ stischem Material trägt, dass der Diffusor (102) mit einem Schnitt (103) versehen ist und dass der Ausgabekopf (99) eine Regelscheibe (105) trägt, dass der Ventilkolben (8, 36) mindestens einen Senkrechtdurchflusskanal (32, 51) und min¬ destens einen Waagrechtkanal (33, 52) aufweist.1. Device for the storage and controlled delivery of pressurized products, consisting of a rigid outer container, a flexible inner container, attached to a valve unit, a spray nozzle, or, depending on the nature of the product, a diffuser and, depending on the ein¬ used propellant, a discharge control, characterized in that the nozzle neck (19) with grooves (20, 83, 84), ring ribs (27, 28, 29) or stair-shaped steps (88, 89) is provided that if the rigid container (1) is made of plastic, on the outside of the can neck (19) a snap lock (21) is provided that a plastic valve plate (7) with the snap lock counterpart (21) is provided for the plastic valve plate (7 ) has a ring membrane (17) and a double ring rib (18) that a closure sleeve (22) is made of the same plastic material as the rigid container (1) and is connected to it by means of high frequency on the ring rib (23) of the The neck of the can (19) is welded, that valve plates made of plastic (7) as well as metal (40) are provided with a bore (40), that the valve bodies (6, 34) have support options (13, 45), on which there are sealing washers (12, 44) which hermetically seal the bore (12, 44) when the rigid container (1) is under pressure, so that the valve bodies (6, 93) have side wings (15) are provided that the valve bodies (6, 93) provided with side wings are made of the same plastic material as the inner wall of the flexible inner container (4) and are welded to it by means of heat that the flexible inner container (4) it is made from a folded plastic film by means of heat-welded seams (24, 61) that the valve pistons (8, 36) have at least two but preferably three ring ribs (27, 28, 29) and that a valve unit (A) for viscous products products is provided with an elastic seal (94) which a Wa rze (95) bears that this wart (95) has a cut (97) has that the dispensing head (99) is equipped with a tube piece (100) that is inserted into the wart (95), that the dispensing head (99) carries a diffuser (102) made of elastic material that the Diffuser (102) is provided with a cut (103) and that the dispensing head (99) carries a regulating disc (105), that the valve piston (8, 36) has at least one vertical flow channel (32, 51) and at least one horizontal channel (33 , 52). 2. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass der Ventilkolben (7) mit vier Senkrechtkanälen (32) und vier Waagrechtkanälen versehen ist.2. Device according to claim 1, characterized in that the valve piston (7) is provided with four vertical channels (32) and four horizontal channels. 3. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass der Ventilkolben (36) mit einem Stift (37) versehen ist, dessen Basisdurchmesser kleiner als der Innendurchmes¬ ser des Kolbenrohrs (42) ist und dass der Kolben (26) nur einen Senkrechtkanal (51) und nur einen Waagrechtkanal (52) aufweist.3. Device according to claim 1, characterized in that the valve piston (36) is provided with a pin (37), the base diameter of which is smaller than the inner diameter of the piston tube (42) and that the piston (26) has only one vertical channel ( 51) and has only one horizontal channel (52). 4. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass der Beutel (58) mit einem Nippel (57) versehen ist, um ein Aufstecken auf einen Steigrohrhalter (55) zu gestatten, dass der Nippel (57) eine Scheibe (59) hat, welche Nuten (60) aufweist und dass die Scheibe (59) mit der Innenwand des Beutels (58) mittels Wärme verschweisst ist.4. The device according to claim 1, characterized in that the bag (58) is provided with a nipple (57) in order to allow it to be plugged onto a riser pipe holder (55) so that the nipple (57) has a disc (59), which has grooves (60) and that the disc (59) is welded to the inner wall of the bag (58) by means of heat. 5. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass ein Rohrstück (62) aus demselben Material wie die In¬ nenwand eines Beutels (4) ist, dass zum Wärmeschweissen der Beutelfolie ein Metallkern (64), dessen Durchmesser kleiner als der Innendurchmesser des Rohrstücks (62) ist und in die¬ ses vor dem Schweissen eingeführt wird und dass die Durch¬ messer der Halbnuten (67) der Schweissbacken (65, 66) klei¬ ner sind als der Aussendurchmesser des Rohrstücks (62). 5. The device according to claim 1, characterized in that a pipe section (62) made of the same material as the inner wall of a bag (4), that for heat welding the bag film, a metal core (64) whose diameter is smaller than the inside diameter of the pipe section (62) and into which it is introduced before welding and that the diameters of the half-grooves (67) of the welding jaws (65, 66) are smaller than the outside diameter of the pipe section (62). 6. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass die Durchmesser der Halbnuten (75) der Schweissbacken (73, 74) kleiner sind als der Aussendurchmesser des Ventil¬ körpers (70).6. The device according to claim 1, characterized in that the diameter of the half-grooves (75) of the welding jaws (73, 74) are smaller than the outer diameter of the Ventil¬ body (70). 7. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass sowohl der Ventilkörper (7, 93) wie auch die Innenwand des Beutels (4, 58) aus Polypropylen sind.7. The device according to claim 1, characterized in that both the valve body (7, 93) and the inner wall of the bag (4, 58) are made of polypropylene. 8. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass der Beutel (4, 58) in seiner Längsachse akkordeonförmig gefaltet ist, dass Papierringe (79, 80) vorgesehen sind und dass die Papierqualität der Ringe (79, 80) so gewählt ist, dass sie beim Füllen von Produkt in den Beutel (4, 58) zer- reissen. 8. The device according to claim 1, characterized in that the bag (4, 58) is folded accordionally in its longitudinal axis, that paper rings (79, 80) are provided and that the paper quality of the rings (79, 80) is selected such that tear them into the bag (4, 58) when filling the product.
EP88905346A 1987-06-26 1988-06-27 Device for storing and controlled dispensing of pressurized products and a method for the manufacturing of said device Expired - Lifetime EP0320510B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88905346T ATE98191T1 (en) 1987-06-26 1988-06-27 DEVICE FOR STORAGE AND CONTROLLED DELIVERY OF PRODUCTS UNDER PRESSURE AND PROCESS FOR THEIR MANUFACTURE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH2429/87 1987-06-26
CH242987A CH674760A5 (en) 1987-06-26 1987-06-26 Device for storing and dispensing pressurised prods.
CH4180/87A CH676585A5 (en) 1987-10-26 1987-10-26 Device for storing and dispensing pressurised prods.
CH4180/87 1987-10-26

Publications (2)

Publication Number Publication Date
EP0320510A1 true EP0320510A1 (en) 1989-06-21
EP0320510B1 EP0320510B1 (en) 1993-12-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88905346A Expired - Lifetime EP0320510B1 (en) 1987-06-26 1988-06-27 Device for storing and controlled dispensing of pressurized products and a method for the manufacturing of said device

Country Status (10)

Country Link
US (1) US4969577A (en)
EP (1) EP0320510B1 (en)
JP (1) JP2612758B2 (en)
AU (1) AU606182B2 (en)
BR (1) BR8807106A (en)
DE (1) DE3886184D1 (en)
DK (1) DK89189A (en)
FI (1) FI890836A7 (en)
IN (1) IN171132B (en)
WO (1) WO1988010221A1 (en)

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US4969577A (en) 1990-11-13
AU606182B2 (en) 1991-01-31
DK89189D0 (en) 1989-02-24
EP0320510B1 (en) 1993-12-08
FI890836A0 (en) 1989-02-22
WO1988010221A1 (en) 1988-12-29
FI890836A7 (en) 1989-02-22
AU1950188A (en) 1989-01-19
BR8807106A (en) 1989-10-31
JP2612758B2 (en) 1997-05-21
DK89189A (en) 1989-02-24
DE3886184D1 (en) 1994-01-20
IN171132B (en) 1992-08-01
JPH02500572A (en) 1990-03-01

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