EP0232354B1 - Flüssigkeitsbehälter - Google Patents

Flüssigkeitsbehälter Download PDF

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Publication number
EP0232354B1
EP0232354B1 EP86904886A EP86904886A EP0232354B1 EP 0232354 B1 EP0232354 B1 EP 0232354B1 EP 86904886 A EP86904886 A EP 86904886A EP 86904886 A EP86904886 A EP 86904886A EP 0232354 B1 EP0232354 B1 EP 0232354B1
Authority
EP
European Patent Office
Prior art keywords
bag
liquid
housing
container
internal space
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
EP86904886A
Other languages
English (en)
French (fr)
Other versions
EP0232354A1 (de
Inventor
Leonard Sharples
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.)
Splicerite Ltd
Original Assignee
Splicerite Ltd
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 GB858520722A external-priority patent/GB8520722D0/en
Priority claimed from GB868606199A external-priority patent/GB8606199D0/en
Application filed by Splicerite Ltd filed Critical Splicerite Ltd
Priority to AT86904886T priority Critical patent/ATE59828T1/de
Publication of EP0232354A1 publication Critical patent/EP0232354A1/de
Application granted granted Critical
Publication of EP0232354B1 publication Critical patent/EP0232354B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
    • B65D47/241—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element
    • B65D47/242—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element moving helically
    • 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
    • B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
    • B65D83/0061—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents the contents of a flexible bag being expelled by the contracting forces inherent in the bag or a sleeve fitting snugly around the bag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/0001—Apparatus or devices for dispensing beverages on draught by squeezing collapsible or flexible storage containers

Definitions

  • the present invention relates to liquid containers, and in particular to liquid containers which will hereinafter be referred to as "bag in a tube” containers.
  • bag in a tube container refers to a container in the form of a flexible inner bag located within a more rigid vessel, such as a tubular vessel.
  • a more rigid vessel such as a tubular vessel.
  • the outer vessel can be of any suitable shape, including tubular.
  • such a container is used for holding liquids, especially beverages, and has a tap associated with the flexible inner bag so that the liquid may be dispensed.
  • This type of container may be used for holding both non-pressurised and pressurised liquids, but in the latter case there is a requirement that no space should be left above the partially dispensed liquid into which the gas (normally carbon dioxide) contained in the liquid can escape. Unless this can be achieved, the liquid in the container will go flat.
  • the containers of this type have a flexible inner bag for holding a pressurised liquid, the bag being contained within a cylindrical outer casing through which a tap associated with the bag projects near the base of the casing, and include means for reducing the volume of the bag as the liquid contained therein is dispensed.
  • the casing may include upper and lower end caps, the container including a mechanism by which the upper end cap can be moved downwards within the casing to reduce the volume of the bag, this mechanism being lockable against the inner walls of the casing to prevent subsequent increase in the volume of the bag due to the pressure exerted by the liquid.
  • a liquid container which comprises a rigid or semi-rigid housing a charging and discharging opening provided on the housing for the liquid content of the container a flexible and open-ended elastomeric bag arranged in the housing and suspended from the mouth of the housing opening valve means for controlling the charging of the bag with liquid so that the bag can expand without rupture within the confines of the housing from an initial relaxed contracted state and for allowing the discharge of the liquid content of the bag under the action of the bag as it returns to its contracted state by its own inherent resilience, and means provided on the housing for allowing the internal space defined between the exterior of the bag and the internal wall of the housing to be vented as the bag expands and for allowing ingress of ambient air to this internal space as the bag contracts during liquid discharge.
  • said means takes the form of a vent formed in the base of the housing.
  • the known flap valve arrangement merely allows bag expansion and contraction by allowing ingress of ambient air during bag contraction, and venting of the container during bag expansion, but does not exert any predictable control over bag contraction.
  • the invention therefore seeks to overcome this problem by providing an improved means for establishing control over the contraction of the bag so that a controlled flow of liquid discharge can be obtained.
  • a liquid container which comprises a rigid or semi-rigid housing, a charging and a discharging opening defined by a mouth of the housing for permitting the passage of liquid content into or out of the container, a flexible and open-ended elastomeric bag arranged in the housing and suspended from said mouth, valve means for controlling the charging of the bag with liquid so that the bag can expand without rupture within the confines of the housing from an initial relaxed contracted state and for controlling the discharge of the liquid content of the bag under the action of the bag as it returns to its contracted state by its own inherent resilience, and means provided on the housing for allowing the internal space defined between the exterior of the bag and the internal wall of the housing to be vented as the bag expands and for allowing ingress of ambient air to said internal space as the bag contracts during liquid discharge: characterised in that said last cited means comprises a pressure control valve which normally functions as a one-way valve permitting only throttled ingress of external ambient air to the internal space defined between the bag and the internal wall of the housing so as to limit the rate
  • valve means in order to charge the container with liquid it is necessary to operate said valve means in a charging mode so that liquid, usually under pressure, can fill the bag via said housing opening, and the valve means is then operated in a closing mode so that the liquid is retained in the bag.
  • the valve means In filling of the bag, it expands from its relaxed state and progressively diminishes the volume of the internal space defined between the bag and the inner wall of the housing, and this expansion is readily permitted in that the pressure control valve is operated so that this space can be vented.
  • the valve means in order to discharge all or part of the liquid content of the bag the valve means is operated in a discharging mode, and the bag automatically discharges its liquid content through the housing opening as it contracts with its own pre-stored elasticity.
  • valve means is provided on a tap-like fitting which is mounted on or in the housing opening, and this fitting is provided with an intake port to which a liquid dispenser can be coupled, the port having a respective valve element which is normally maintained closed but which is automatically opened upon coupling of the dispenser with the intake port to allow the bag to be charged with liquid, but which then re-closes and remains this way for the life of the container or until recharging takes place.
  • the fitting also has an outlet port or tap, having a one-way valve element which is operable when liquid discharge is required, but which prevents air from entering the container.
  • a particularly preferred use of a container according to the invention is for containing beverages, in which case the bag will be made of an elastomeric material which is of food grade and suitable for use with beverages. Further, when the container is intended for use with a carbonated beverage the bag will be made of an elastomer which has a very high gaseous carbon dioxide retention property. Alternatively, and preferably in addition, the elastomer will have the property of having a very low permeability to gaseous oxygen. When beer is stored, it is most important that contact between the beer and gaseous oxygen should be avoided during storage prior to initial opening, and thereafter should be kept to an absolute minimum, since beer quickly deteriorates upon contact with oxygen.
  • the elastomer from which the flexible bag is made is preferably one which permits the bag to be expanded from its relaxed contracted state, to between 200 and 1,200 per cent of its contracted state. In this preferred range, it is particularly suitable for the bag to be capable of being expanded to at least 500 per cent of its contracted state.
  • a suitable elastomer from which the bag can be made is a suitably treated polyurethane material.
  • the flexible bag is suspended from the housing opening, the bag having a lip which is trapped between the mouth of the housing opening and an engaging portion of the fitting, thereby to form a seal for the flexible bag in the housing.
  • the housing which is rigid or semi-rigid, may be made of any suitable material or composite, and may be made of metal, glass, paper, or plastics.
  • a container 1 in accordance with the present invention comprises a flexible and open-ended inner bag 2 located within an outer housing 3.
  • the housing 3 is formed with a mouth 3a which defines a charging and a discharging opening via which the liquid content of the container can pass during charging and discharging of the container.
  • the bag 2 is suspended within the housing 3 via its open end and on the mouth 3a.
  • the bag 2 is made from an elastomeric material of food grade, suitable for use with beverages, and capable of being expanded between 200 per cent and 1,200 per cent of its original contracted (relaxed) dimensions, as shown in full lines in Figure. 1.
  • An example of such a material is suitably treated polyurethane.
  • the bag 2 has a closed lower end, and is of tubular form prior to filling with liquid.
  • the upper end of the bag 2 has a lip 4a which is trapped between the annular end surface of the mouth 3a and a cap 4.
  • the outer housing 3 and the cap 4 are both screw threaded so that the cap 4 can be screwed onto the housing 3, trapping the bag 2 between the cap 4 and the housing 3.
  • the cap 4 includes an outlet tap 6 through which liquid may be dispensed.
  • the cap 4 also includes a liquid inlet 5 through which the bag 2 may be filled with liquid.
  • a seal is formed between the cap 4 and the outer housing 3.
  • the cap 4 forms a tap-like fitting which can be mounted on or in the opening in the housing 3.
  • the outer housing 3, which is rigid or semi-rigid, may be made of metal, glass, paper, plastics, or any other suitable material or composite.
  • the tap 6 may be moulded from plastics material with a metal or plastics cap.
  • the container is filled via the liquid inlet 5 which forms an intake port to which a liquid dispenser can be coupled, the port having a respective valve element 5a (see Figure 3) which is normally maintained closed but which is automatically opened upon coupling of the dispenser (not shown) with the intake port to allow the bag 2 to be charged with liquid.
  • the valve element 5a automatically re-closes and remains this way for the life of the container after charging or until re-charging.
  • the container may also be filled with liquid through the tap 6.
  • the bag 2 Prior to filling of the container with liquid the bag 2 is contracted and takes a relaxed tubular state, as shown by reference 2a in full lines in Figure 1. As the bag 2 becomes filled with liquid to more than its minimum contracted volume, it expands so that when the container is approximately half full, the bag assumes the position indicated by dashed lines 2b. When the container is completely full of liquid, the bag takes up the position indicated by 2c, in which it fills all of the space available within the outer housing 3 and presses intimately against its wall.
  • the bag 2 contracts by an amount approximately equivalent to the volume of liquid dispensed, thus ensuring that no air space is left above the liquid remaining in the bag 2.
  • valve element 5a, and the tap 6 jointly constitute a "valve means" for controlling the charging and discharging of the liquid content of the bag 2 via the opening defined by the mouth 3a of the housing 3.
  • the bag 2 is made of an elastomeric material and is made so as to have sufficient wall strength to expand without rupture within the confines of the housing 3 from a relaxed contracted state upon charging of the bag with liquid, and is returnable to its contracted state by its own inherent resilience (pre-stored elasticity) in order to discharge its liquid content.
  • a pressure control valve (which is described in more detail below) communicates with the internal space 3b which is defined between the exterior of the bag 2 and the internal wall of the housing 3.
  • the pressure control valve will be located at any convenient position in the wall of the housing 3, and is shown by way of example only, schematically as pressure control valve 8 which is mounted in the base 9 of the housing 3.
  • the pressure control valve 8 is arranged to be capable of operation, manually or automatically as desired, to allow venting of the internal space 3b during expansion of the bag 2 as it is charged with liquid. This therefore allows the bag to expand without significant pressure resistance during liquid filling.
  • the pressure control valve 8 is mounted in the base 9 and may be arranged to be triggered automatically to an open position upon placement of the base 9 on a suitable support during liquid filling of the container in a factory.
  • valve 8 upon removal of the housing 3 from this special support, the valve 8 returns to its normal position, in which it can function as a one-way valve which only permits throttled ingress of external ambient air to the internal space 3b when there is a pressure differential in this direction i.e. when sub atmospheric pressure is generated in the internal space 3b during contraction of the bag 2.
  • the valve 8 is a throttle valve which slowly allows the internal space 3b to be charged with air as the bag 2 contracts thereby preventing excessive liquid discharge from the bag 2 upon opening of the tap 6.
  • the flexible bag 2 is made of an elastomeric material of food grade, and capable of expanding by up to 1,200 per cent of its relaxed state.
  • the elastomeric material will be a specially treated material which has special properties in relation to its operation when exposed to gaseous oxygen and gaseous carbon dioxide.
  • the elastomer should have the property of having very low permeability to gaseous oxygen.
  • a typical wall thickness of the bag 2 may be about 2 mm when beer is stored in the bag, and about 3 mm for a carbonated beverage.
  • the elastomer should have the property of a very high gaseous carbon dioxide retention.
  • the bag 2 may be provided with longitudinally extending ribs extending outwardly from the outer surface of the bag. These ribs are provided in order to ensure that air passageways, between adjacent ribs, allow air to flow from around the bottom of the bag towards the neck region of the bag.
  • the bag typically will expand outwardly from the top towards the bottom, the top of the bag engaging the wall of the casing before the bottom of the bag has fully expanded. Without the provision of these ribs there is a danger that air may be trapped between the bottom of the bag and the housing 3.
  • the bag At its neck region, the bag is provided with an annular groove which is in communication with the passageways formed between the ribs and this annular groove in turn communicates with a valve (not shown, but corresponding in function to valve 8) which may be actuated to allow escape of air from between the bag and the casing to the exterior of the device.
  • a valve (not shown, but corresponding in function to valve 8) which may be actuated to allow escape of air from between the bag and the casing to the exterior of the device.
  • the arrangement may be such that the valve may be manually or automatically actuated. Automatic actuation would take place when a filling head is connected to the device and allows evacuation of air while the bag is being filled.
  • the valve is such that, as liquid is emptied from the device, the drop in pressure between the bag and the casing will cause the valve to open and allow air to be sucked into the space between the bag and the casing.
  • a container 21 is essentially similar to the container of Figure 1 but is fitted with a removable carrying handle 23.
  • Handle 23 includes a collar 25 extending around the neck of the container, arms 27 made of relatively thin, flexible plastics material, and grip portion 29 formed of larger section material.
  • handle 23 In its “rest” position, handle 23 extends laterally from the container neck and when the container is on its side for dispensing purposes, the handle acts as an "anti-roll” bar, as illustrated in Figure 2.
  • the handle will "bend” so that grip portion lies above the valve when the container is being carried in a vertical orientation by means of the handle.
  • the handle may be formed integrally with the container.
  • a container in accordance with the present invention may be used equally successfully with pressurised or non-pressurised liquids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Devices For Use In Laboratory Experiments (AREA)

Claims (3)

1. Flüssigkeitsbehälter (1) mit einem steifen oder halbsteifen Gehäuse (3), einer Füll- und Ausgießöffnung, die von einer Mundöffnung (3a) des Gehäuses gebildet wird, um den Durchgang des Flüssigkeitsinhalts in den oder aus dem Behälter zu erlauben, einem flexiblen und an einem Ende offenen elastischen Sack (2), der innerhalb des Gehäuses (3) angeordnet und an der Mundöffnung (3a) aufgehängt ist, Ventilvorrichtungen (4, 5, 5a, 6) zur Kontrolle der Füllung des Sacks (2) mit Flüssigkeit, damit sich der Sack ohne Zerreißen innerhalb der Grenzen des Gehäuses (3) von einem anfänglichen entspannten zusammengezogenen Zustand (2a) ausgedehnen kann, und zur Kontrolle des Ausgießens des Flüssigkeitsinhalts des Sackes durch die Wirkung des Sackes, wenn dieser durch die ihm innenwohnende Elastizität zu seinem zusammengezogenen Zustand zurückkehrt, und Vorrichtungen (8) am Gehäuse (3) zur Entlüftung des inneren Raumes (3b), zwischen dem Äußeren des Sackes (2) und der inneren Wand des Gehäuses (3), wenn sich der Sack ausdehnt, und zum Einlaß von Luft aus der Umgebung in diesen inneren Raum (3b), wenn sich der Sack während der Flüssigkeitsentleerung zusammenzieht: dadurch gekennzeichnet, daß diese zuletztgenannten Vorrichtungen ein Druckkontrollventil (8) aufweisen, das normalerweise als Einwegventil arbeitet, das einen nur gedrosselten Einlaß von äußerer Umgebungsluft zum inneren Raum (3b) zwischen dem Sack und der inneren Wand des Gehäuses erlaubt, um die Menge der Flüssigkeitsentleerung beim Zusammenziehen des Sackes zu begrenzen, das aber von Hand oder automatisch in seiner Funktion übersteuerbar ist, so daß der innere Raum (3b) während der Ausdehnung des Sackes (2), wenn letzterer mit Flüssigkeit gefüllt wird, in die Atmosphäre entlüftet werden kann.
2. Flüssigkeitsbehälter nach Anspruch 1, dadurch gekennzeichnet, daß die Ventilvorrichtungen (4, 5, 5a, 6) an einem ausgußähnlichen Paßstück, das auf oder in die Gehäuseöffnung (3a) eingesetzt ist, angeordnet sind, wobei dieses Paßstück eine Einlaßöffnung (5) aufweist, an die ein Flüssigkeitsspender angeschlossen werden kann, um den Sack mit Flüssigkeit zu füllen, und diese Öffnung ein entsprechendes Ventilelement (5a) aufweist, das normalerweise geschlossen gehalten ist, das aber automatisch beim Koppeln des Spenders mit der Einlaßöffnung geöffnet wird.
3. Flüssigkeitsbehälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Sack (2) äußere Rippen aufweist, die Verbindungskanäle innerhalb des Gehäuses (3) bilden, wenn der Sack bis zur Berührung der inneren Wand des Gehäuses ausgedehnt ist.
EP86904886A 1985-08-19 1986-08-15 Flüssigkeitsbehälter Expired - Lifetime EP0232354B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86904886T ATE59828T1 (de) 1985-08-19 1986-08-15 Fluessigkeitsbehaelter.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB8520722 1985-08-19
GB858520722A GB8520722D0 (en) 1985-08-19 1985-08-19 Liquid container
GB868600013A GB8600013D0 (en) 1985-08-19 1986-01-02 Liquid container
GB8600013 1986-01-02
GB868606199A GB8606199D0 (en) 1985-08-19 1986-03-13 Liquid container
GB8606199 1986-03-13

Publications (2)

Publication Number Publication Date
EP0232354A1 EP0232354A1 (de) 1987-08-19
EP0232354B1 true EP0232354B1 (de) 1991-01-09

Family

ID=27262766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904886A Expired - Lifetime EP0232354B1 (de) 1985-08-19 1986-08-15 Flüssigkeitsbehälter

Country Status (5)

Country Link
EP (1) EP0232354B1 (de)
AU (1) AU6220786A (de)
DE (1) DE3676803D1 (de)
DK (1) DK192887A (de)
WO (1) WO1987001099A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8719360D0 (en) * 1987-08-15 1987-09-23 Splicerite Ltd Liquid container
DE3923297A1 (de) * 1989-07-14 1991-01-24 Lothar Dipl Ing Grzybowski Dosiergefaess fuer die abgabe pasteuser bis hochfluessiger medien
US5242085A (en) * 1990-12-17 1993-09-07 The Coca-Cola Company Liquid container system
AU745756B2 (en) * 1998-04-02 2002-03-28 Ramon Riyad Beshay A fluid dispenser
JP6604876B2 (ja) * 2016-02-29 2019-11-13 株式会社吉野工業所 トリガー式液体噴出容器
CN114084535B (zh) * 2021-12-16 2023-02-03 中海石油(中国)有限公司 一种水下柔性存储装置及使用方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1171612A (en) * 1964-10-10 1969-11-26 Porter Lancastrian Ltd Improvements relating to the Storage and Distribution of Carbonated Beverages
US3377766A (en) * 1965-06-08 1968-04-16 Strecton Ind Inc Lined containers
DE2710984A1 (de) * 1977-03-14 1978-09-21 Aero Pump Gmbh Vorrichtung zum verspruehen einer fluessigkeit aus einem geschlossenen festen behaeltnis
US4324350A (en) * 1978-04-24 1982-04-13 Thompson Kenneth W Elastomeric apparatus for pressure dispensing of fluid
US4458830A (en) * 1981-05-18 1984-07-10 Werding Winfried J Appliance for discharging a non-compressible liquid, creamy or pasty product under pressure

Also Published As

Publication number Publication date
EP0232354A1 (de) 1987-08-19
AU6220786A (en) 1987-03-10
DK192887D0 (da) 1987-04-14
DE3676803D1 (de) 1991-02-14
DK192887A (da) 1987-04-14
WO1987001099A1 (en) 1987-02-26

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