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EP0457245B1 - Closure cap - Google Patents

Closure cap Download PDF

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Publication number
EP0457245B1
EP0457245B1 EP91107730A EP91107730A EP0457245B1 EP 0457245 B1 EP0457245 B1 EP 0457245B1 EP 91107730 A EP91107730 A EP 91107730A EP 91107730 A EP91107730 A EP 91107730A EP 0457245 B1 EP0457245 B1 EP 0457245B1
Authority
EP
European Patent Office
Prior art keywords
valve
closure cap
opening
chamber
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91107730A
Other languages
German (de)
French (fr)
Other versions
EP0457245A2 (en
EP0457245A3 (en
Inventor
Karl-Heinz Schmidt
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.)
Aptar Dortmund GmbH
Original Assignee
Perfect Valois Ventil GmbH
Perfect Ventil GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Perfect Valois Ventil GmbH, Perfect Ventil GmbH filed Critical Perfect Valois Ventil GmbH
Publication of EP0457245A2 publication Critical patent/EP0457245A2/en
Publication of EP0457245A3 publication Critical patent/EP0457245A3/en
Application granted granted Critical
Publication of EP0457245B1 publication Critical patent/EP0457245B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/042—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube
    • B05B11/043—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube designed for spraying a liquid
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
    • B65D47/2081—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve port
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7843—Integral resilient member forms plural valves

Definitions

  • the invention relates to a closure cap according to the preamble of patent claim 1.
  • a closure cap of the type mentioned is known. It relates to a foam generating device in which a sealing washer seals a channel when the container is under pressure, while the liquid flows out through a dip tube, a valve housing channel, a section of the valve housing lying above the valve through slots of the valve housing approximately at a right angle in an area between an inner wall of the closure cap and a first half of the valve housing occurs.
  • the air is forced vertically upwards through openings and grooves in the area mentioned, so that it mixes with the liquid of the container after the valve and an overlying channel have opened due to the container pressure.
  • the invention is therefore based on the object of improving a closure cap of the type mentioned so that the ventilation of the container is excluded after the compression of its flexible wall through the dispensing opening, but nevertheless an economical mass production of the closure cap is possible by simple construction of the closure cap.
  • the invention solves this problem by the features contained in the characterizing part of patent claim 1.
  • the arrangement of the outlet valve upstream of the discharge opening, which is only opened when there is excess pressure in the container, reliably prevents the container from being re-ventilated and thus the risk of suction of substances contaminating the container contents through the discharge opening.
  • the maintenance of the quality of the spray material in the container is ensured by the ventilation opening, which is separate from the discharge opening, and the ventilation valve, which only opens when there is negative pressure in the container.
  • connection opening provided between the chamber connecting the riser pipe to the discharge opening and the upper, air-containing part of the container enables the active product to be mixed with the air forced out of the upper part of the container through the connection opening.
  • This mixing effect is naturally achieved in particular when the container contents consist of a liquid, so that the closure cap is particularly suitable for liquids as the active product.
  • closure cap which accordingly consists of only four individual parts, namely the actual closure cap, a riser pipe holder, a single flexible valve component, which at the same time is the valve parts for the outlet valve and for the ventilation valve poses, as well as from the riser.
  • the valve seat of the outlet valve 8 is formed by a cylindrical pin 13 which projects coaxially into the cylindrical chamber 11 from the underside 14 of a head wall 15.
  • the cylindrical pin 13 forms an annular space 16 with the chamber wall 17 of the chamber 11.
  • On the chamber wall 17 a flexible valve part 18 is fastened, which abuts with a circular central hole edge 19 on the peripheral surface of the pin 13.
  • the flexible valve part 18 of the outlet valve 8 extends from the chamber wall 17 to the edge of the hole 19 in the direction of the discharge opening 6 in the form of a round crest 20.
  • the discharge openings 6 are arranged in the top wall 15 of the chamber 11, which extends from a centrally projecting cap dome 21 is formed.
  • a foot 22 of the cap dome 21 is surrounded by an annular shoulder 23 which has the ventilation opening 9 in the foot area.
  • a cap jacket 24 extends from the outer edge of the annular shoulder 23 approximately coaxially to the central longitudinal axis of the closure cap 5 and is shaped so that it can be placed on the container neck with a press fit or snap fit. Alternatively, a screw connection can also be selected.
  • the underside 25 of the annular shoulder 23 forms the valve seat for a flexible valve part 26 of the ventilation valve 10 radially outside the ventilation opening 9.
  • the flexible valve part 26 is fastened to the chamber wall 17 and extends like an annular disk approximately parallel to the annular shoulder 23 and extends radially outwards the ventilation opening 9 and is provided on the outer edge with an upstanding sealing lip 27.
  • valve component 28 is preferably made of very soft polyethylene, rubber or silicone.
  • the valve component 28 consists of a cylindrical section 29 which extends along the chamber wall 17 and connects the upper round crest 20 of the outlet valve 8 to the annular disk-shaped valve part 26 of the ventilation valve 10. This enables the closure cap to be produced from a few individual parts with very simple assembly.
  • a cylindrical riser pipe holder 30 is inserted into the lower opening 31 of the chamber 11 and press-fits the two flexible valve parts 18 and 26 of the outlet valve 8 and the ventilation valve 10 formed by the one-piece valve component 28 on the chamber wall 17.
  • the riser pipe holder 34 is expanded at 32 compared to the diameter of the riser pipe 7 provided at its lower end. In this extension area 32, two diametrically opposite connection openings 12 are provided. When the container is pressed together, these connecting openings allow air to escape from the container into the chamber 11 and to mix with the spray material in the chamber before it is sprayed out of the discharge openings 6. It is understood that there may be only one or more than two connection openings.
  • the ventilation valve 10 is kept tightly closed by the overpressure that arises in the container, while on the other hand the overpressure counteracts the liquid container contents, for example, through the riser pipe 7 and the chamber 11 presses the hole edge 19 of the flexible valve part 18, which is lifted off the cylindrical peripheral surface of the pin 13, so that the liquid can flow out through the two dispensing openings 6 adjacent to the pin 13 in parallel.
  • the liquid flows out as a spray mist because air contained in the upper part of the container has been mixed with the spray liquid through the connection opening 12 in the chamber 11.
  • the outlet valve 8 closes when pressure is exited.
  • the container wall then moves due to its resilience back to their original position.
  • the valve part 26 is lifted from the ventilation opening 9 due to the low pressure in the container relative to the atmospheric pressure, so that the part of the container which is free of liquid is filled with air until pressure equalization. As soon as the pressure equalization is reached, the elastic valve part 26 of the ventilation valve 10 closes automatically.
  • a ventilation valve 37 is designed differently in this second embodiment.
  • a cylindrical sealing collar 33 protrudes from the underside 25 of the annular shoulder 23 coaxially to the chamber 11 and surrounds the ventilation opening 9.
  • the inner wall 34 of the sealing collar 29 forms the valve seat for the outer edge 35 of a flexible valve part 36 of the ventilation valve 37.
  • a riser pipe holder 34 is formed essentially as that in Fig. 1, but also has in the transition area 32 to the riser 7 outside an annular flange 38.
  • the radius of this annular flange 38 is smaller than the radial distance of the ventilation opening 9 from the central longitudinal axis of the cap 5.
  • the annular flange 38 is arranged at an axial distance from the underside 25 of the annular shoulder 23 such that the flexible valve part 36 of the ventilation valve 37 extends downward and outward against the inner wall 30 over the annular flange 38 through an annular gap 39 between the annular flange and the sealing collar 33 and lies tight against it in the closed position.
  • this embodiment has the advantage that the ventilation valve 37 reacts more sensitively or faster than in the case of the first embodiment. It is also more favorable in terms of flow.
  • the shape of the one-piece valve component 40 in FIG. 2 also enables easier manufacture in the injection molding process, since the diameter changes are flowing from the valve part 36 via the cylindrical section 29 to the upper hole edge 19.
  • the closure cap itself is preferably made of polyethylene, polypropylene or other thermoplastic materials.
  • the closure cap can be placed on a suitably designed container neck by means of a snap fit or a press fit, or it can be screwed onto a threaded container neck by means of a screw closure.
  • the riser pipe holder and the riser pipe can also be made from appropriate materials.
  • the riser pipe holder 30, on which the riser pipe 7 is mounted, and the flexible one-piece valve component 28 or 40 are held in the chamber 11 of the cap dome 21 of the closure cap by a press fit.
  • the active spray material preferably liquid
  • the active spray material is guided through the riser pipe 7 and the riser pipe holder 30 into the chamber 11 by pressure on the container.
  • air that is located above the active product inside the container also passes through the connection opening 9 of the riser pipe holder 30 into the chamber 11, where it mixes with the active product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Glass Compositions (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

The invention relates to a closure cap (5) having a dispensing opening (6) for containers with flexible walls, which can be pressed together by hand for the dispensing of spray product which is in connection with the dispensing opening (6) by means of a dip tube (7). Upstream of the dispensing opening (6) is an outlet valve (8), which is open when there is positive pressure in the container, whereas an air-admitting opening (9) is assigned an air-admitting valve (10), which is open when there is negative pressure in the container. By virtue of the outlet valve (8) upstream of the dispensing opening (6), the readmission of air to the container and consequently the risk of sucking in through the dispensing opening (6) substances contaminating the container content is prevented. Maintaining the quality of the spray product in the container is ensured by virtue of the air-admitting opening (9), separate from the dispensing opening (6), and the air-admitting valve (10), which opens only when there is negative pressure in the container.

Description

Die Erfindung betrifft eine Verschlußkappe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a closure cap according to the preamble of patent claim 1.

Aus der US-A-4,147,306 ist eine Verschlußkappe der genannten Bauart bekannt. Sie betrifft eine Schaumerzeugungsvorrichtung, bei der eine Dichtungsscheibe einen Kanal abdichtet, wenn der Behälter unter Druck steht, während die Flüssigkeit durch ein Tauchrohr, einen Ventilgehäusekanal, einen über dem Ventil liegenden Abschnitt des Ventilgehäuses nach außen durch Schlitze des Ventilgehäuses annähernd in einem rechten Winkel in einem Bereich zwischen einer Innenwand der Verschlußkappe und einer ersten Hälfte des Ventilgehäuses eintritt. Die Luft wird durch Öffnungen und Nuten senkrecht nach oben in den genannten Bereich gedrückt, damit sie sich mit der Flüssigkeit des Behälters vermischt, nachdem sich durch den Behälterdruck das Ventil und ein darüberliegender Kanal geöffnet hat. Die Mischung bildet dann einen feinvernebelten Sprühstrahl und strömt nach oben durch einen axialen Kanal der Verschlußkappe und in eine darüberliegende erste Kammer sowie danach durch einen Filter, durch den der Schaum erzeugt wird, bevor er aus der Verschlußkappe austritt. Nach Druckentlastung des Behälters und dessen Rückkehr zu seiner normalen Form fällt die Ventilkugel zurück und dichtet den axialen Kanal innerhalb des Ventilgehäuses ab. Der dadurch entstehende Saugdruck zieht die Dichtungsscheibe von der Belüftungsöffnung weg, wodurch Luft dem Behälter von außen zugeführt wird.From US-A-4,147,306 a closure cap of the type mentioned is known. It relates to a foam generating device in which a sealing washer seals a channel when the container is under pressure, while the liquid flows out through a dip tube, a valve housing channel, a section of the valve housing lying above the valve through slots of the valve housing approximately at a right angle in an area between an inner wall of the closure cap and a first half of the valve housing occurs. The air is forced vertically upwards through openings and grooves in the area mentioned, so that it mixes with the liquid of the container after the valve and an overlying channel have opened due to the container pressure. The mixture then forms a nebulized spray and flows upward through an axial channel of the cap and into an overlying first chamber and then through a filter through which the foam is generated before it exits the cap. After relieving the pressure of the container and returning to its normal shape, the valve ball falls back and seals the axial channel inside the valve housing. The resulting suction pressure pulls the sealing washer away from the ventilation opening, as a result of which air is supplied to the container from the outside.

Dieser Effekt kann mit Nachteilen verbunden sein, wenn z.B. die mit der Verschlußkappe ausgerüstete Packung für medizinische Zwecke eingesetzt wird, bei denen ein Heil- oder Behandlungsmittel durch Einführen des die Abgabeöffnung enthaltenden, vorderen Endes der Verschlußkappe in eine Körperöffnung abgegeben werden muß. Hier lässt sich nicht ausschließen, daß, noch während die Verschlußkappe mit ihrer Abgabeöffnung in die Körperöffnung eingesetzt ist, in der Körperöffnung befindliche Flüssigkeit durch die Wiederbelüftung des Behälters angesaugt wird, die zu einer Kontaminierung des im Behälter enthaltenen Produktes führt. So sind zur Bekämpfung von Schnupfen sogenannte Nasal-Sprühsysteme bekannt, bei denen nach dem Versprühen des Sprays in die Nase das Nasensekret durch die Wiederbelüftung des Behälters angesaugt und das Produkt hierdurch kontaminiert wird.This effect can be disadvantageous if, for example, the package equipped with the closure cap is used for medical purposes in which a medicinal or treatment agent has to be dispensed by inserting the front end of the closure cap containing the dispensing opening into a body opening. It cannot be ruled out here that, even while the closure cap is inserted with its dispensing opening into the body opening, liquid in the body opening is sucked in by the re-ventilation of the container, which leads to contamination of the product contained in the container. So-called nasal spray systems are known for combating runny nose, in which after spraying the spray into the nose, the nasal secretion is sucked in by re-venting the container and the product is thereby contaminated.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Verschlußkappe der genannen Gattung so zu verbessern, daß die Belüftung des Behälters nach dem Zusammenpressen seiner flexiblen Wandung durch die Abgabeöffnung ausgeschlossen ist, trotzdem aber durch einfachen Aufbau der Verschlußkappe eine wirtschaftliche Massenherstellung der Verschlußkappe möglich ist.The invention is therefore based on the object of improving a closure cap of the type mentioned so that the ventilation of the container is excluded after the compression of its flexible wall through the dispensing opening, but nevertheless an economical mass production of the closure cap is possible by simple construction of the closure cap.

Die Erfindung löst diese Aufgabe durch die im Kennzeichen des Patentanspruchs 1 enthaltenen Merkmale. Durch die Anordnung des der Abgabeöffnung vorgeschalteten Auslaßventils, das nur bei im Behälter herrschendem Überdruck geöffnet ist, wird mit Sicherheit die Wiederbelüftung des Behälters und damit die Gefahr des Ansaugens von den Behälterinhalt kontaminierenden Substanzen durch die Abgabeöffnung hindurch verhindert. Denn die Beibehaltung der Qualität des Sprühgutes im Behälter wird durch die von der Abgabeöffnung getrennte Belüftungsöffnung und das Belüftungsventil sichergestellt, das sich nur bei Unterdruck im Behälter öffnet.The invention solves this problem by the features contained in the characterizing part of patent claim 1. The arrangement of the outlet valve upstream of the discharge opening, which is only opened when there is excess pressure in the container, reliably prevents the container from being re-ventilated and thus the risk of suction of substances contaminating the container contents through the discharge opening. The maintenance of the quality of the spray material in the container is ensured by the ventilation opening, which is separate from the discharge opening, and the ventilation valve, which only opens when there is negative pressure in the container.

Die vorgesehene Verbindungsöffnung zwischen der das Steigrohr mit der Abgabeöffnung verbindenden Kammer und dem oberen, Luft enthaltenden Teil des Behälters ermöglicht eine Vermischung des aktiven Produkts mit der aus dem oberen Teil des Behälters durch die Verbindungsöffnung hindurch gepreßten Luft. Dieser Vermischungseffekt wird naturgemäß insbesondere dann erreicht, wenn der Behälterinhalt aus einer Flüssigkeit besteht, so daß die Verschlußkappe insbesondere für Flüssigkeiten als das aktive Produkt geeignet ist.The connection opening provided between the chamber connecting the riser pipe to the discharge opening and the upper, air-containing part of the container enables the active product to be mixed with the air forced out of the upper part of the container through the connection opening. This mixing effect is naturally achieved in particular when the container contents consist of a liquid, so that the closure cap is particularly suitable for liquids as the active product.

Aus den weiteren Unteransprüchen ergeben sich vorteilhafte konstruktive Ausgestaltungen der Verschlußkappe, die demnach nur aus vier Einzelteilen besteht, nämlich der eigentlichen Verschlußkappe, einem Steigrohrhalter, einem einzigen flexiblen Ventilbauteil, das gleichzeitig die Ventilteile für das Auslaßventil und für das Belüftungsventil stellt, sowie aus dem Steigrohr. Infolgedessen ist eine außerordentlich preiswerte und wirtschaftliche Massenherstellung des erfindungsgemäßen Verschlusses möglich.From the further subclaims there are advantageous constructive configurations of the closure cap, which accordingly consists of only four individual parts, namely the actual closure cap, a riser pipe holder, a single flexible valve component, which at the same time is the valve parts for the outlet valve and for the ventilation valve poses, as well as from the riser. As a result, extremely inexpensive and economical mass production of the closure according to the invention is possible.

Die Erfindung ist nachstehend anhand der Zeichnung von zwei Ausführungsbeispielen näher erläutert. Es zeigen:

Fig. 1
eine erste Ausführungsform einer Verschlußkappe in einem Mittellängsschnitt und
Fig. 2
eine zweite Ausführungsform der Verschlußkappe in einem Mittellängsschnitt.
The invention is explained below with reference to the drawing of two exemplary embodiments. Show it:
Fig. 1
a first embodiment of a closure cap in a central longitudinal section and
Fig. 2
a second embodiment of the closure cap in a central longitudinal section.

In den Fig. 1 und 2 ist eine Verschlußkappe 5 für ein Quetschflaschen-Nasal-Sprühsystem mit zwei Abgabeöffnungen 6 für einen nicht gezeigten Behälter, vorzugsweise aus Kunsstoff, mit flexibler Wandung gezeigt, die von Hand zur Abgabe eines flüssigen Therapeutikums, z.B. zum Abschwellen der Nasenschleimhäute, zusammenpreßbar ist, das mittels eines Steigrohres 7 mit den Abgabeöffnungen 6 in Verbindung steht. Anstelle eines flüssigen Sprühgutes kann gegebenenfalls auch ein pulverförmiges in Betracht kommen.1 and 2, a closure cap 5 for a squeeze bottle nasal spray system with two dispensing openings 6 for a container, not shown, preferably made of plastic, with flexible wall is shown, which is used by hand to dispense a liquid therapeutic agent, e.g. for swelling of the nasal mucosa, is compressible, which is connected to the discharge openings 6 by means of a riser pipe 7. Instead of a liquid spray material, a powdery one can also be considered.

Den Abgabeöffnungen 6 ist ein Auslaßventil 8 vorgeschaltet, das bei Überdruck im Behälter geöffnet ist. Gemäß Fig. 1 ist einer Belüftungsöffnung 9 ein Belüftungsventil 10 zugeordnet, das bei Unterdruck im Behälter geöffnet ist. Eine Kammer 11 verbindet das Steigrohr 7 mit der Abgabeöffnung 6 und steht mit dem oberen, Luft enthaltenden Teil des Behälters über mindestens eine Verbindungsöffnung 12 in Verbindung.The discharge openings 6 is preceded by an outlet valve 8 which is opened when the container is under pressure. According to FIG. 1, a ventilation valve 10 is assigned to a ventilation opening 9 and is opened when the container is under vacuum. A chamber 11 connects the riser pipe 7 to the discharge opening 6 and communicates with the upper, air-containing part of the container via at least one connection opening 12.

Der Ventilsitz des Auslaßventils 8 ist von einem zylindrischen Zapfen 13 gebildet, der von der Unterseite 14 einer Kopfwand 15 in die zylindrische Kammer 11 koaxial hineinragt. Der zylindrische Zapfen 13 bildet mit der Kammerwand 17 der Kammer 11 einen Ringraum 16. An der Kammerwand 17 ist ein flexibles Ventilteil 18 befestigt, das mit einem kreisförmigen mittleren Lochrand 19 an der Umfangsfläche des Zapfens 13 dicht anliegt.The valve seat of the outlet valve 8 is formed by a cylindrical pin 13 which projects coaxially into the cylindrical chamber 11 from the underside 14 of a head wall 15. The cylindrical pin 13 forms an annular space 16 with the chamber wall 17 of the chamber 11. On the chamber wall 17 a flexible valve part 18 is fastened, which abuts with a circular central hole edge 19 on the peripheral surface of the pin 13.

Das flexible Ventilteil 18 des Auslaßventils 8 erstreckt sich von der Kammerwand 17 zu dem Lochrand 19 in Richtung der Abgabeöffnung 6 in Form einer Rundkuppe 20. Wie ersichtlich, sind die Abgabeöffnungen 6 in der Kopfwand 15 der Kammer 11 angeordnet, die von einem mittig aufragenden Kappendom 21 gebildet ist. Ein Fuß 22 des Kappendomes 21 ist von einer Ringschulter 23 umgeben, die in dem Fußbereich die Belüftungsöffnung 9 aufweist. Ein Kappenmantel 24 erstreckt sich von dem Außenrand der Ringschulter 23 etwa koaxial zur Mittellängsachse der Verschlußkappe 5 abwärts und ist so geformt, daß er mit Preßsitz oder Schnappsitz auf den Behälterhals aufsetzbar ist. Alternativ kann auch eine Schraubverbindung gewählt werden.The flexible valve part 18 of the outlet valve 8 extends from the chamber wall 17 to the edge of the hole 19 in the direction of the discharge opening 6 in the form of a round crest 20. As can be seen, the discharge openings 6 are arranged in the top wall 15 of the chamber 11, which extends from a centrally projecting cap dome 21 is formed. A foot 22 of the cap dome 21 is surrounded by an annular shoulder 23 which has the ventilation opening 9 in the foot area. A cap jacket 24 extends from the outer edge of the annular shoulder 23 approximately coaxially to the central longitudinal axis of the closure cap 5 and is shaped so that it can be placed on the container neck with a press fit or snap fit. Alternatively, a screw connection can also be selected.

Gemäß Fig. 1 bildet die Unterseite 25 der Ringschulter 23 radial außerhalb der Belüftungsöffnung 9 den Ventilsitz für ein flexibles Ventilteil 26 des Belüftungsventils 10. Das flexible Ventilteil 26 ist an der Kammerwand 17 befestigt und erstreckt sich ringscheibenartig etwa parallel zur Ringschulter 23 radial nach außen über die Belüftungsöffnung 9 hinaus und ist am Außenrand mit einer aufragenden Dichtungslippe 27 versehen.1, the underside 25 of the annular shoulder 23 forms the valve seat for a flexible valve part 26 of the ventilation valve 10 radially outside the ventilation opening 9. The flexible valve part 26 is fastened to the chamber wall 17 and extends like an annular disk approximately parallel to the annular shoulder 23 and extends radially outwards the ventilation opening 9 and is provided on the outer edge with an upstanding sealing lip 27.

Obwohl die flexiblen Ventilteile 18 und 26 getrennt ausgebildet und unabhängig voneinander in der Kammer z.B. mechanisch oder durch Kleben oder Heißsiegeln befestigt werden können, bilden sie bevorzugt ein einziges Ventilbauteil 28. Dieses Ventilbauteil 28 ist vorzugsweise aus sehr weichem Polyethylen, Gummi oder Silicon hergestellt. Das Ventilbauteil 28 besteht aus einem zylindrischen Abschnitt 29, der sich entlang der Kammerwand 17 erstreckt und die obere Rundkuppe 20 des Auslaßventils 8 mit dem ringscheibenförmigen Ventilteil 26 des Belüftungsventils 10 verbindet. Dies ermöglicht die Herstellung der Verschlußkappe aus wenigen Einzelteilen bei sehr einfacher Montage.Although the flexible valve parts 18 and 26 can be formed separately and can be fastened independently of one another in the chamber, for example mechanically or by gluing or heat sealing, they preferably form a single valve component 28. This valve component 28 is preferably made of very soft polyethylene, rubber or silicone. The valve component 28 consists of a cylindrical section 29 which extends along the chamber wall 17 and connects the upper round crest 20 of the outlet valve 8 to the annular disk-shaped valve part 26 of the ventilation valve 10. This enables the closure cap to be produced from a few individual parts with very simple assembly.

Ein zylindrischer Steigrohrhalter 30 ist in die untere Öffnung 31 der Kammer 11 eingesetzt und legt mit Preßsitz die beiden von dem einteiligen Ventilbauteil 28 gebildeten flexiblen Ventilteile 18 bzw. 26 des Auslaßventils 8 und des Belüftungsventils 10 an der Kammerwand 17 fest. Der Steigrohrhalter 34 ist gegenüber dem Durchmesser des an seinem unteren Ende vorgesehenen Steigrohres 7 bei 32 erweitert. In diesem Erweiterungsbereich 32 sind zwei diametral gegenüberliegende Verbindungsöffnungen 12 vorgesehen. Diese Verbindungsöffnungen ermöglichen beim Zusammenpressen des Behälters den Austritt von Luuft aus dem Behälter in die Kammer 11 sowie die Vermischung mit dem Sprühgut in der Kammer, bevor es aus den Abgabeöffnungen 6 versprüht wird. Es versteht sich, daß auch nur eine oder mehr als zwei Verbindungsöffnungen vorhanden sein können.A cylindrical riser pipe holder 30 is inserted into the lower opening 31 of the chamber 11 and press-fits the two flexible valve parts 18 and 26 of the outlet valve 8 and the ventilation valve 10 formed by the one-piece valve component 28 on the chamber wall 17. The riser pipe holder 34 is expanded at 32 compared to the diameter of the riser pipe 7 provided at its lower end. In this extension area 32, two diametrically opposite connection openings 12 are provided. When the container is pressed together, these connecting openings allow air to escape from the container into the chamber 11 and to mix with the spray material in the chamber before it is sprayed out of the discharge openings 6. It is understood that there may be only one or more than two connection openings.

Soll durch die Abgabeöffnung 6 im flexiblen Behälter enthaltende Flüssigkeit durch Zusammenpressen des Behälters abgegeben werden, wird durch den dabei im Behälter entstehenden Überdruck einerseits das Belüftungsventil 10 dicht geschlossen gehalten, während andererseits der Überdruck den z.B. flüssigen Behälterinhalt durch das Steigrohr 7 und die Kammer 11 gegen den Lochrand 19 des flexiblen Ventilteils 18 preßt, der von der zylindrischen Umfangsfläche des Zapfens 13 abgehoben wird, so daß die Flüssigkeit durch die beiden an den Zapfen 13 parallel angrenzenden Abgabeöffnungen 6 ausströmen kann. Die Flüssigkeit strömt als ein Sprühnebel aus, weil im oberen Teil des Behälters enthaltene Luft durch die Verbindungsöffnung 12 in der Kammer 11 mit der Sprühflüssigkeit vermischt wurde. Das Auslaßventil 8 schließt sich bei Beendigung der Druckausübung. Die Behälterwand bewegt sich dann aufgrund ihres Rückstellvermögens in ihre ursprüngliche Lage zurück. Das Ventilteil 26 wird von der Belüftungsöffnung 9 aufgrund des gegenüber dem atmosphärischen Druck niedrigen Drucks im Behälter abgehoben, so daß der von Flüssigkeit freie Teil des Behälters bis zum Druckausgleich mit Luft gefüllt wird. Sobald der Druckausgleich erreicht ist, schließt sich das elastische Ventilteil 26 des Belüftungsventils 10 selbsttätig.If liquid contained in the flexible container is to be dispensed through the dispensing opening 6 by pressing the container together, on the one hand the ventilation valve 10 is kept tightly closed by the overpressure that arises in the container, while on the other hand the overpressure counteracts the liquid container contents, for example, through the riser pipe 7 and the chamber 11 presses the hole edge 19 of the flexible valve part 18, which is lifted off the cylindrical peripheral surface of the pin 13, so that the liquid can flow out through the two dispensing openings 6 adjacent to the pin 13 in parallel. The liquid flows out as a spray mist because air contained in the upper part of the container has been mixed with the spray liquid through the connection opening 12 in the chamber 11. The outlet valve 8 closes when pressure is exited. The container wall then moves due to its resilience back to their original position. The valve part 26 is lifted from the ventilation opening 9 due to the low pressure in the container relative to the atmospheric pressure, so that the part of the container which is free of liquid is filled with air until pressure equalization. As soon as the pressure equalization is reached, the elastic valve part 26 of the ventilation valve 10 closes automatically.

Bei der zweiten Ausführungsform gemäß Fig. 2 einer Verschlußkappe sind der ersten Ausführungsform entsprechende Teile mit gleichen Bezugszeichen versehen.In the second embodiment according to FIG. 2 of a closure cap, parts corresponding to the first embodiment are provided with the same reference numerals.

Es ist ersichtlich, daß ein Belüftungsventil 37 bei dieser zweiten Ausführungsform unterschiedlich ausgebildet ist. Ein zylindrischer Dichtkragen 33 steht von der Unterseite 25 der Ringschulter 23 koaxial zur Kammer 11 nach unten vor und umschließt die Belüftungsöffnung 9. Die Innenwand 34 des Dichtkragens 29 bildet den Ventilsitz für den Außenrand 35 eines flexiblen Ventilteils 36 des Belüftungsventils 37. Ein Steigrohrhalter 34 ist im wesentlichen wie derjenige in Fig. 1 ausgebildet, hat aber darüber hinaus im Übergangsbereich 32 zum Steigrohr 7 außen einen Ringflansch 38. Der Radius dieses Ringflansches 38 ist kleiner als der radiale Abstand der Belüftungsöffnung 9 von der Mittellängsachse der Verschlußkappe 5 bemessen. Der Ringflansch 38 ist in axialem Abstand von der Unterseite 25 der Ringschulter 23 derart angeordnet, daß das flexible Ventilteil 36 des Belüftungsventils 37 sich über den Ringflansch 38 durch einen Ringspalt 39 zwischen dem Ringflansch und dem Dichtkragen 33 nach unten und außen gegen dessen Innenwand 30 erstreckt und an dieser in Schließstellung dicht anliegt. Diese Ausführungsform hat im Vergleich zu der in Fig. 1 gezeigten Ausführungsform den Vorteil, daß das Belüftungsventil 37 empfindlicher oder schneller reagiert als im Falle der ersten Ausführungsform. Außerdem ist es strömungstechnisch günstiger. Die Form des einteiligen Ventilbauteils 40 in Fig. 2 ermöglicht darüber hinaus eine leichtere Herstellung im Spritzgießverfahren, da die Durchmesseränderungen vom Ventilteil 36 über den zylindrischen Abschnitt 29 bis zum oberen Lochrand 19 fließend sind.It can be seen that a ventilation valve 37 is designed differently in this second embodiment. A cylindrical sealing collar 33 protrudes from the underside 25 of the annular shoulder 23 coaxially to the chamber 11 and surrounds the ventilation opening 9. The inner wall 34 of the sealing collar 29 forms the valve seat for the outer edge 35 of a flexible valve part 36 of the ventilation valve 37. A riser pipe holder 34 is formed essentially as that in Fig. 1, but also has in the transition area 32 to the riser 7 outside an annular flange 38. The radius of this annular flange 38 is smaller than the radial distance of the ventilation opening 9 from the central longitudinal axis of the cap 5. The annular flange 38 is arranged at an axial distance from the underside 25 of the annular shoulder 23 such that the flexible valve part 36 of the ventilation valve 37 extends downward and outward against the inner wall 30 over the annular flange 38 through an annular gap 39 between the annular flange and the sealing collar 33 and lies tight against it in the closed position. Compared to the embodiment shown in FIG. 1, this embodiment has the advantage that the ventilation valve 37 reacts more sensitively or faster than in the case of the first embodiment. It is also more favorable in terms of flow. The shape of the one-piece valve component 40 in FIG. 2 also enables easier manufacture in the injection molding process, since the diameter changes are flowing from the valve part 36 via the cylindrical section 29 to the upper hole edge 19.

Bei beiden Ausführungsformen besteht die Verschlußkappe selbst vorzugsweise aus Polyethylen, Polypropylen oder anderen thermoplastischen Kunststoffen. Die Verschlußkappe kann mittels Schnappsitz oder Preßsitz auf einen entsprechend ausgebildeten Behälterhals aufgesetzt oder mittels Schraubverschluß auf einen mit Gewinde versehenen Behälterhals aufgeschraubt werden. Auch der Steigrohrhalter und das Steigrohr können aus entsprechenden Werkstoffen hergestellt werden.In both embodiments, the closure cap itself is preferably made of polyethylene, polypropylene or other thermoplastic materials. The closure cap can be placed on a suitably designed container neck by means of a snap fit or a press fit, or it can be screwed onto a threaded container neck by means of a screw closure. The riser pipe holder and the riser pipe can also be made from appropriate materials.

Der Steigrohrhalter 30, auf dem das Steigrohr 7 montiert ist, sowie das flexible einteilige Ventilbauteil 28 bzw. 40 werden durch Preßsitz in der Kammer 11 des Kappendomes 21 der Verschlußkappe gehalten.The riser pipe holder 30, on which the riser pipe 7 is mounted, and the flexible one-piece valve component 28 or 40 are held in the chamber 11 of the cap dome 21 of the closure cap by a press fit.

Bei Betätigung gilt für beide Ausführungsformen, daß durch Druck auf den Behälter das aktive Sprühgut, vorzugsweise Flüssigkeit durch das Steigrohr 7 und den Steigrohrhalter 30 in die Kammer 11 geführt wird. Gleichzeitig gelangt Luft, die sich oberhalb des aktiven Produktes innerhalb des Behälters befindet, durch die Verbindungsöffnung 9 des Steigrohrhalters 30 ebenfalls in die Kammer 11, wo sie sich mit dem aktiven Produkt vermischt.When actuated, it applies to both embodiments that the active spray material, preferably liquid, is guided through the riser pipe 7 and the riser pipe holder 30 into the chamber 11 by pressure on the container. At the same time, air that is located above the active product inside the container also passes through the connection opening 9 of the riser pipe holder 30 into the chamber 11, where it mixes with the active product.

Durch den hydraulischen Druck der mit Luft durchmischten aktiven Flüssigkeit wird der Lochrand 19 von dem Zapfen 13 abgehoben und somit das Auslaßventil 8 geöffnet. Das Produkt kann dann durch die Abgabeöffnungen 6 austreten. Unmittelbar nach Beendigung des Zusammenpressens des Behälters wird aufgrund des Unterdrucks im Behälter gegenüber dem Außendruck das Auslaßventil 8 zwischen dem Ventilteil 18 und dem Zapfen 13 wieder geschlossen und somit, z.B. bei einer Nasensprayflasche, ein Ansaugen von Nasensekret durch die Abgabeöffnungen 6 verhindert. Gleichzeitig wird ebenfalls durch den in dem Behälter herrschenden Unterdruck das Belüftungsventil 10 bzw. 37 durch Abheben der Dichtungslippe 27 bzw. des Außenrandes 35 der betreffenden Ventilteile von ihrem Ventilsitz geöffnet, so daß Luft durch die Belüftungsöffnung 9 in der Verschlußkappe in den Behälter gelangen und diesen wieder belüften kann. Ferner ist ersichtlich, daß die Montage der Verschlußkappe lediglich eine aufeinanderfolgende koaxiale Montagebewegung des einteiligen Ventilbauteils 28 bzw. 40, des Steigrohrhalters mit Preßsitz sowie des Steigrohres 7 erfordert.Due to the hydraulic pressure of the active liquid mixed with air, the edge of the hole 19 is lifted off the pin 13 and thus the outlet valve 8 is opened. The product can then exit through the discharge openings 6. Immediately after the compression of the container has ended, the outlet valve 8 between the valve part 18 and the pin 13 is closed again due to the negative pressure in the container with respect to the external pressure and thus, for example in the case of a nasal spray bottle, prevents nasal secretion from being sucked in through the discharge openings 6. At the same time this is also due to the negative pressure prevailing in the container Ventilation valve 10 or 37 opened by lifting the sealing lip 27 or the outer edge 35 of the valve parts in question from their valve seat, so that air can enter the container through the ventilation opening 9 in the closure cap and can ventilate it again. It can also be seen that the assembly of the closure cap only requires a successive coaxial assembly movement of the one-piece valve component 28 or 40, the riser pipe holder with a press fit and the riser pipe 7.

Claims (9)

  1. Closure cap (5) with a delivery opening (6) for containers with a flexible wall, which is manually compressible to deliver sprayed material, which is in communication with the delivery opening (6) by means of a feedpipe (7), whereby provided upstream of the delivery opening (6) there is an outlet valve (8) which is open when there is an overpressure in the container, whilst associated with a vent opening (9) there is a vent valve (10, 37), which is open when there is a reduced pressure in the container, and a chamber (11), which connects the feedpipe (7) to the delivery opening (6), is in communication with the upper portion of the container, which contains air, via at least one communication opening (12), characterized in that the valve seat of the outlet valve (8) is constituted by a cylindrical peg (13) which projects coaxially from the underside (14) of a top wall (15) into the chamber (11) and defines an annular space (16) together with the chamber wall (17), to which is secured a flexible valve member (18) which sealingly engages the peripheral surface of the peg (13) with a circular, central hole edge (19).
  2. Closure cap as claimed in Claim 1, characterised in that the flexible valve member (18) of the outlet valve (8) extends from the chamber wall (17) to its hole edge (19) in the manner of a dome (20) in the direction of the delivery opening (6) which is arranged in the top wall (15) of the chamber (11).
  3. Closure cap as claimed in Claim 1, characterised in that the chamber (11) is defined by a centrally upstanding cap dome (21), whose foot (22) is surrounded by an annular shoulder (23) and affords the vent opening (9) and that a cap wall (24) extends downwardly from the outer edge of the annular shoulder (23) approximately coaxially with the central longitudinal axis of the closure cap (5).
  4. Closure cap as claimed in Claim 3, characterised in that radially outside the vent opening (9) the underside (25) of the annular shoulder (23) defines the valve seat for a flexible valve member (26) of the vent valve (10) which is secured to the chamber wall (17) and extends radially outwardly in the manner of an annular disc approximately parallel to the annular shoulder (23) beyond the vent opening (9) and is provided at its outer edge with an upstanding sealing lip (27).
  5. Closure cap as claimed in Claim 3, characterised in that projecting downwardly from the underside (25) of the annular shoulder (23) coaxially with the chamber (11) is a cylindrical sealing collar (33) which surrounds the vent opening (9) and whose internal wall (34) forms a valve seat for the outer edge (35) of a flexible valve member (36) of the vent valve (37) which is secured to the chamber wall (17).
  6. Closure cap as claimed in Claim 7, characterised in that a cylindrical feedpipe holder (30) is inserted in the lower opening (31) of the chamber (11) and secures the two flexible valve members (18 or 26; 36) of the outlet valve (8) and vent valve (10; 37) to the chamber wall (17) with a push fit.
  7. Closure cap as claimed in Claim 6, characterised in that the flexible valve members (18; 26; 36) of the outlet valve (8) and of the vent valve (10; 37) constitute a single valve unit (28; 40).
  8. Closure cap as claimed in Claim 6, characterised in that the feedpipe holder (30), which engages in the chamber (11), is of cylindrical construction and is broadened with respect to the diameter of the feedpipe (7) provided at its lower end, whereby the communication opening (12) is provided in this broadened region (32).
  9. Closure cap as claimed in Claim 8, characterised in that in the transition region (32) with the feedpipe (7) the feedpipe holder (30) has an external annular flange (38), the radius of which is smaller than the radial spacing of the vent opening (9) from the central longitudinal axis of the closure cap (5), whereby the annular flange (38) is so arranged at an axial distance from the underside (25) of the annular shoulder (23) that the flexible valve member (36) of the vent valve (37) extends downwardly through an annular gap (39) between the annular flange (38) and the sealing collar (33) and outwardly towards its inner wall (43) and sealingly engages it.
EP91107730A 1990-05-14 1991-05-13 Closure cap Expired - Lifetime EP0457245B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015480A DE4015480A1 (en) 1990-05-14 1990-05-14 CAP
DE4015480 1990-05-14

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EP0457245A2 EP0457245A2 (en) 1991-11-21
EP0457245A3 EP0457245A3 (en) 1992-05-20
EP0457245B1 true EP0457245B1 (en) 1994-09-28

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EP91107730A Expired - Lifetime EP0457245B1 (en) 1990-05-14 1991-05-13 Closure cap

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US (1) US5240149A (en)
EP (1) EP0457245B1 (en)
AT (1) ATE112183T1 (en)
DE (2) DE4015480A1 (en)
ES (1) ES2060240T3 (en)

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Also Published As

Publication number Publication date
DE59103078D1 (en) 1994-11-03
DE4015480A1 (en) 1991-11-21
EP0457245A2 (en) 1991-11-21
DE4015480C2 (en) 1993-08-12
EP0457245A3 (en) 1992-05-20
ATE112183T1 (en) 1994-10-15
ES2060240T3 (en) 1994-11-16
US5240149A (en) 1993-08-31

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