EP0232354A1 - Liquid container. - Google Patents
Liquid container.Info
- Publication number
- EP0232354A1 EP0232354A1 EP86904886A EP86904886A EP0232354A1 EP 0232354 A1 EP0232354 A1 EP 0232354A1 EP 86904886 A EP86904886 A EP 86904886A EP 86904886 A EP86904886 A EP 86904886A EP 0232354 A1 EP0232354 A1 EP 0232354A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- liquid
- housing
- valve
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 82
- 239000013536 elastomeric material Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 239000012080 ambient air Substances 0.000 claims abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 239000003570 air Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 235000013361 beverage Nutrition 0.000 claims description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000000123 paper Substances 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 235000013405 beer Nutrition 0.000 description 12
- 229920001971 elastomer Polymers 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 6
- 235000014171 carbonated beverage Nutrition 0.000 description 3
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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.
- Currently known 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 bag arranged in the housing to communicate with the housing opening, and valve means for controlling the charging and discharging of the liquid content of the bag via said opening, in which:
- the bag is made of an elastomeric material and is of sufficient wall strength to expand without rupture within the confines of the housing from a relaxed contracted state upon charging of the bag with liquid, and is returnable to its contracted state by its own inherent resilience in order to discharge its liquid content;
- a pressure control valve communicates with the internal space defined between the exterior of the bag and the internal wall of the housing, said control valve being operable to allow venting of said internal space during expansion of the bag as it is charged with liquid, and said valve also being arranged to allow ingress of ambient air to the internal space as the bag contracts during liquid discharge.
- the bag During 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 re ⁇ charging 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.
- Figure 1 is a longitudinal section of a container in accordance with the present invention.
- Figure 2 is an end view of a similar container to that shown in Figure 1, but fitted with a combined carrying handle and "anti-roll bar"; and
- Figure 3 is a detailed view of a tap-like fitting for mounting in a housing opening of the container shown in Figure 1.
- 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 o 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 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 ' lacement 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 extern ambient air to the internal space 3b when there is a pressure differential in this direction ie 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 th 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)
- Devices For Use In Laboratory Experiments (AREA)
- Thermally Insulated Containers For Foods (AREA)
- Closures For Containers (AREA)
Abstract
Conteneur de liquide comprenant un logement rigide ou semi-rigide (3), une ouverture de chargement et de déchargement définie par une embouchure (3a) du logement et permettant le passage du liquide à l'intérieur ou à l'extérieur du conteneur, un sac (2) flexible et présentant une extrémité ouverte suspendue à l'ouverture du logement, et des organes de soupape (4, 5, 5a, 6) régulant le chargement et le déchargement du liquide du sac (2) via l'ouverture. Le sac (2) se compose d'un matériau élastomère et sa paroi présente une résistance suffisante pour se dilater sans casser à l'intérieur du logement (3) d'un état relaxé de contraction (2a) lors du remplissage du sac avec un liquide, et peut revenir à son état de contraction grâce à sa propre résilience inhérente afin de décharger le liquide qu'il contient. Pour faciliter la dilatation et la contraction du sac flexible (2), une soupape (8) de régulation de la pression est en communication avec l'espace interne (3b) défini entre l'extérieur du sac (2) et la paroi interne du logement (3), la soupape (8) de régulation de la pression pouvant être actionnée manuellement ou automatiquement pour permettre la mise à l'évent de l'espace interne (3b) pendant la dilatation du sac (2) à mesure qu'il est rempli du liquide, la soupape fonctionnant également normalement en tant que soupape unidirectionnelle pour permettre l'entrée de l'air ambiant dans l'espace interne (3b) à mesure que le sac (2) se contracte pendant le déchargement du liquide.Liquid container comprising a rigid or semi-rigid housing (3), a loading and unloading opening defined by a mouth (3a) of the housing and allowing the passage of the liquid inside or outside the container, a bag (2) flexible and having an open end suspended from the opening of the housing, and valve members (4, 5, 5a, 6) regulating the charging and discharging of liquid from the bag (2) via the opening. The bag (2) is made of an elastomeric material and its wall has sufficient strength to expand without breaking inside the housing (3) from a relaxed state of contraction (2a) when filling the bag with a liquid, and can return to its contracted state through its own inherent resilience in order to discharge the liquid it contains. To facilitate the expansion and contraction of the flexible bag (2), a pressure regulating valve (8) is in communication with the internal space (3b) defined between the exterior of the bag (2) and the internal wall of the housing (3), the pressure regulating valve (8) being operable manually or automatically to allow the internal space (3b) to be vented during expansion of the bag (2) as it is filled with the liquid, the valve also normally functioning as a one-way valve to allow entry of ambient air into the internal space (3b) as the bag (2) contracts during liquid discharge.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86904886T ATE59828T1 (en) | 1985-08-19 | 1986-08-15 | LIQUID CONTAINER. |
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 |
GB8600013 | 1986-01-02 | ||
GB868600013A GB8600013D0 (en) | 1985-08-19 | 1986-01-02 | Liquid container |
GB868606199A GB8606199D0 (en) | 1985-08-19 | 1986-03-13 | Liquid container |
GB8606199 | 1986-03-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0232354A1 true EP0232354A1 (en) | 1987-08-19 |
EP0232354B1 EP0232354B1 (en) | 1991-01-09 |
Family
ID=27262766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86904886A Expired EP0232354B1 (en) | 1985-08-19 | 1986-08-15 | Liquid container |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0232354B1 (en) |
AU (1) | AU6220786A (en) |
DE (1) | DE3676803D1 (en) |
DK (1) | DK192887D0 (en) |
WO (1) | WO1987001099A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8719360D0 (en) * | 1987-08-15 | 1987-09-23 | Splicerite Ltd | Liquid container |
DE3923297A1 (en) * | 1989-07-14 | 1991-01-24 | Lothar Dipl Ing Grzybowski | DISPENSING JAR FOR THE DELIVERY OF PASTEUSERS TO HIGH-FLUID MEDIA |
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 (en) * | 2016-02-29 | 2019-11-13 | 株式会社吉野工業所 | Trigger type liquid ejection container |
CN114084535B (en) * | 2021-12-16 | 2023-02-03 | 中海石油(中国)有限公司 | Underwater flexible storage device and use method |
Family Cites Families (5)
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 (en) * | 1977-03-14 | 1978-09-21 | Aero Pump Gmbh | Spray bottle with pump and liq. holding bag - has pressure equalising channel between atmosphere and space around bag |
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 |
-
1986
- 1986-08-15 AU AU62207/86A patent/AU6220786A/en not_active Abandoned
- 1986-08-15 EP EP86904886A patent/EP0232354B1/en not_active Expired
- 1986-08-15 WO PCT/GB1986/000487 patent/WO1987001099A1/en active IP Right Grant
- 1986-08-15 DE DE8686904886T patent/DE3676803D1/en not_active Expired - Lifetime
-
1987
- 1987-04-14 DK DK192887A patent/DK192887D0/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8701099A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU6220786A (en) | 1987-03-10 |
DK192887A (en) | 1987-04-14 |
EP0232354B1 (en) | 1991-01-09 |
DK192887D0 (en) | 1987-04-14 |
WO1987001099A1 (en) | 1987-02-26 |
DE3676803D1 (en) | 1991-02-14 |
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