CA1333169C - Self generating pressure applying means for a disposable container - Google Patents
Self generating pressure applying means for a disposable containerInfo
- Publication number
- CA1333169C CA1333169C CA 556727 CA556727A CA1333169C CA 1333169 C CA1333169 C CA 1333169C CA 556727 CA556727 CA 556727 CA 556727 A CA556727 A CA 556727A CA 1333169 C CA1333169 C CA 1333169C
- Authority
- CA
- Canada
- Prior art keywords
- compartment
- container
- pressure
- compartments
- gas
- 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 - Fee Related
Links
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 28
- 239000012528 membrane Substances 0.000 claims description 9
- 235000013361 beverage Nutrition 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000002991 molded plastic Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 44
- 238000000926 separation method Methods 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000003111 delayed effect Effects 0.000 abstract 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 21
- 239000012530 fluid Substances 0.000 description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 16
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 description 9
- 239000001569 carbon dioxide Substances 0.000 description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 description 8
- 235000013405 beer Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000014171 carbonated beverage Nutrition 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/60—Contents and propellant separated
- B65D83/62—Contents and propellant separated by membrane, bag, or the like
- B65D83/625—Contents and propellant separated by membrane, bag, or the like the propellant being generated by a chemical or electrochemical reaction
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Dispensing Beverages (AREA)
- Packages (AREA)
Abstract
An expandable pouch is provided for applying a pressure to a material in a container so that it may be readily dispensed therefrom and comprises two flat sheets of a gas and liquid impermeable material in superposed relationship so as to have a length and a width and with the peripheral edge portions thereof permanently sealed. A plurality of compartments are formed in the expandable pouch by lengthwise extending semipermanent peelable strips. Two components of a chemical gas generating system having a delayed action system associated therewith are located in one of the compartments and one component of the two components is located in the other compartments. After actuation of the two components, the one compartment will gradually expand and as the material is dispensed will rupture the semipermanent peelable strip between it and the next adjacent other compartment to form one combined compartment with the one component in the next adjacent other compartment continuing the gas generating system. This process continues until all the other compartments have been expanded. Also, an expandable pouch particularly designed for cooperation with a specifically shaped container is provided wherein the other compartments are expanded so as to maintain a substantially constant pressure in the container.
Description
A SELF-GENERATING PRESSURE APPLYING MEANS FOR A
DISPOSABLE CONTAINER
This invention relates generally to a self-generating pressure applying means, such as an exp~n~hle pouch which is adapted to be positioned in a container having a quantity of material contained therein so as to provide pressure on the material so that it may be readily dispensed from the container and in particular to a self-generating pressure applying means which is particularly suited for dispensing a fluid from a disposable container.
It has been known for many years to dispense material from a container wherein a self-generating pressure applying means is contained within the container so as to apply a pressure on the material contained within the container so that the material may be readily dispensed therefrom through suitable dispensing means. Two major requirements for such use is that the self-generating pressure applying means functions to apply a pressure within desired ranges on the material within the container as portions of the material are dispensed therefrom and to get substantially all of the material out of the container. While these requirements have been met in many instances, the size and shape of some containers *
DISPOSABLE CONTAINER
This invention relates generally to a self-generating pressure applying means, such as an exp~n~hle pouch which is adapted to be positioned in a container having a quantity of material contained therein so as to provide pressure on the material so that it may be readily dispensed from the container and in particular to a self-generating pressure applying means which is particularly suited for dispensing a fluid from a disposable container.
It has been known for many years to dispense material from a container wherein a self-generating pressure applying means is contained within the container so as to apply a pressure on the material contained within the container so that the material may be readily dispensed therefrom through suitable dispensing means. Two major requirements for such use is that the self-generating pressure applying means functions to apply a pressure within desired ranges on the material within the container as portions of the material are dispensed therefrom and to get substantially all of the material out of the container. While these requirements have been met in many instances, the size and shape of some containers *
in association with the materials container therein have provided problems in meeting these requirements.
This invention provides a new, improved self-generating pressure applying means, such as an expandable pouch means, which is particularly designed and constructed so that it cooperates with the container means in which it is contained to ensure that substantially all of the material contained within the container is dispensed therefrom and maintains the pressure within the container means within a desired range of pressure during the dispensing operation. The expandable pouch means of this invention is particularly useful wherever it is undesirable to add additional C02 to the material in the container and where it is desirable to maintain substantially constant pressure on the material in the container during the entire dispensing operation.
In the presently preferred embodiment of the invention, the self-generating pressure applying means comprises an expandable pouch means comprising two relatively flat sheets of a gas and liquid impermeable plastic material in superposed relationship and having a octagonal shape having a length and a width and with the edge portions thereof joined by permanent sealing means. The expandable pouch means is located within the container means so that as the expandable pouch means expands, as described below, it applies pressure to the material in the container means which in the preferred embodiment is a liquid, such as a beverage such as beer. The expandable pouch means is divided into a plurality of compartments by lengthwise extending strips of semipermanent, peelable sealing means. The expandable pouch means is inserted into the container means so that the lengthwise extending strips are, as much as possible, generally parallel to the longitudinal axis of the container means and will move more closely to such relationship as liquid is dispensed from the container means. Two compartments of a gas generating system are contained in one relatively large compartment in the expandable pouch means and each of the other compartments thereof contains a supply of one of the two components. When the two components are exposed in the one compartment, they react to start generating gas to create a pressure in the one compartment so that the portions of the superposed flat sheets forming the one compartment are forced apart. As fluid is dispensed from the container, the one compartment continues to expand and as it expands, it applies a force on the strip of semipermanent, peelable sealing means between the one compartment and the next adjacent other compartment until such strip is ruptured. The one component of the gas generating system in the next adjacent other compartment reacts with the components in the one compartment to continue the generation of gas in the combined one compartment and next adjacent other compartment. The expansion of the expandable pouch means continues until substantially all of the fluid has been dispensed from the container means. As successive other compartments are expanded, the expanded portion of the expandable pouch means will take a shape generally corresponding to the shape of the container means. Puncture means (not described in this application) are then actuated to let the gas pressure escape from the expandable pouch means and the container means so that they may be safely placed in the trash.
An illustrative and presently preferred embodiment of the invention is shown in the accompanying drawings in which:
Fig. 1 is a front elevational view with portions broken away illustrating an expandable pouch means and the components of a gas generating system;
Fig. 2 is a cross-sectional view taken on the line 2-2 of Fig. l;
Fig. 3 is a cross-sectional view of a partially expanded expandable pouch means;
Fig. 4 is a cross-sectional view of a container for holding one component of a gas generating system;
Fig. 5 is a cross-sectional view, except for the dispensing means, illustrating a container means and its supporting structure in an upright position for shipping and commercial storage and a partially expanded expandable pouch means;
Fig. 6 is a view similar to Fig. 5 but with the container means in a dispensing position and after more than half of the fluid has been dispensed; and Fig. 7 is a view similar to Fig. 5 but after substantially all of the fluid has been dispensed.
An expandable pouch means 2 of the presently preferred embodiment is illustrated in Figs. 1 - 3 and comprises two relatively flat sheets 4 and 6 of a flexible plastic material in superposed relationship and made from a gas and liquid impermeable material such as a composite material of an outside layer of a polyester with an inside coating of PVDC, a layer of polyethylene and a layer of an ionomer resin, such as that marketed by Dupont under the trade designation SURLY ~. Each of the flat sheets 4 and 6 is octagonal in shape having a length greater than its width and with peripheral edge portions 8 and 10 permanently joined together by a permanent sealing means 12 formed by heat sealing at a temperature of about 300F. for 0.5 second. The expandable pouch 2 is formed into a first compartment 14 and a plurality of other compartments 16 by a plurality of lengthwise extending strips 18 which join together opposed portions of the 3S flat sheets 4 and 6 using a semipermanent peelable sealing means 20 formed by heat sealing at a temperature of about 250F. for 0.5 second. If the flat sheets 4 and 6 are formed from different plastic materials, the temperature and time would be ad~usted as required to obtain the desired type of seal. Also, if desirable, a suitable adhesive could be used to obtain the desired results.
The normal operation of an expandable pouch means 2 uses some delaying system so that the chemical reaction can be started and still allow for sufficient time for expandable pouch means 2 to be inserted into the container means and suitable sealing and dispensing means applied to the container means. The delaying system for this invention is illustrated in Fig. 1 wherein the first compartment is sub-divided to three sub-compartments 22, 24 and 26. The sub-compartment 22 is formed by a lengthwise extendingstrip 18, as described above, extending parallel to the next adjacent permanent lengthwise extending sealed edge portions 8 and 10. The sub-compartments 24 and 26 are formed by a lengthwise extending strip 18, as described above, extending parallel to and spaced inwardly from the strip 18 forming sub-compartment 22. The lower portion 28 of the strip 18 forming the sub-compartments 24 and 26 has a reduced width for a purpose described below. A quantity of 25 one component 30 of a two component gas generating system, such as a 50% citric acid solution, is contained in the sub-compartment 22. A tablet 32 comprising the other component of the two component gas generating system, such as concentrated sodium 30 bicarbonate, is contained in the sub-compartment 24.
A water solution 34 of sodium bicarbonate is contained in the sub-compartment 26. The other compartments 16 each contain a quantity of the one component 30.
In operation, a force is applied to the sub-35 compartment 22 to rupture the strip 18 so that thecitric acid solution 24 flows into sub-compartment 24 to contact the other component, comprising the sodium carbonate tablet 32, and begins to react therewith to generate carbon dioxide gas. This reaction with the tablet 32 proceeds at a rate to provide the above-described delaying system to allow the expandable pouch means 2 to be inserted into the container means and suitable sealing and dispensing means applied to the container means. The generation of the carbon dioxide gas forms a pressurized force forcing the strip 18 between the sub-compartment 24 and the sub-compartment 26 to rupture at the weakened reducedwidth 28 to combine the sub-compartments 24 and 26.
This permits the citric acid solution to flow into sub-compartment 26 and into contact with the water solution 34 of sodium bicarbonate and further react to continue the generation of carbon dioxide gas. As the generation of the carbon dioxide gas continues, the pressure within the first compartment 14 is increased so as to expand the portions of the flat sheets 4 and 6 forming the first compartment 14. The dispensing of fluid from the container means, as described below, will provide space for further expansion of the expandable pouch means 2. When the limit of the volume of the first compartment 14 is reached, further generation of carbon dioxide gas therein will result in a force being applied to the strip 18 between the first compartment 14 and the next adjacent other compartment 16 so as to rupture such strip 18. The citric acid solution 24 in the next adjacent other compartment 16 will contact the water solution 34 of sodium bicarbonate to continue the generation of carbon dioxide gas. This sequence will continue until the expandable pouch means 2 has been substantially completely expanded.
Another embodiment for the provision of the citric acid solution in the first compartment 14 is illustrated in Fig. 4 and is particularly useful when the fluid in the container means is a carbonated beverage, such as beer. A substantially rigid container 40, which in the preferred embodiment is plastic, has a closed end 42 and an open end 44. The container 40 is illustrated as being a tube but it is to be understood that it can be of any desired geometrical configuration. A barb 46 is secured to the inner surface 48 of the container 40 with its pointed end 50 facing and relatively close to the open end 44. A quantity of the citric acid solution 24 is placed in the container 40 and the open end 44 is sealed by a flexible membrane 52. The strips 18 forming the sub-compartments 22, 24 and 26 are not used in this modification so that the first compartment 14 is one unitary compartment. The filled container 40 is contained in the first compartment 14 with the water solution 34 of sodium bicarbonate.
After the expandable pouch means 2 has been inserted into the container means filled with a carbonated beverage, as described below, the pressures generated by the carbonated beverage in the container means will exert a pressure on the flexible membrane 52 moving it into contact with the pointed end 50 to rupture the flexible membrane 52 and permit the citric acid solution 24 to flow into the water solution 34 of sodium bicarbonate in first compartment 14 to start the carbon dioxide gas generating system.
The location of the expandable pouch means 2 in a container means 60 is illustrated in Figs. 5 - 7.
In Fig. 5, the container means 60 is supported in the upright position for shipping and commercial storage by a support member 62. The expandable pouch means 2 has a length substantially greater than the longitudinal extent of the container means 60 and a width substantially greater than the diameter of the container means 60. Therefore, in order to insert the expandable pouch means 2 through an opening 64 in the container means 60, it is necessary to apply a force in a widthwise direction to compact the expandable pouch means 2 in that direction so that its cross-sectional configuration is less than the cross-sectional configuration of the opening 64. Also, as the expandable pouch means 2 i8 inserted into the container means 60, it i8 necessary to apply a force in the lengthwise direction to push the expanda~le pouch means 2 into the container means 60. This results in a crumpling of the expandable pouch means 2 in the lengthwise direction. Since the material in the expandable pouch means 2 has little tendency to resile, it will remain crumpled while a dispensing means 66 for dispensing portions of the material in the container means 60 is assembled in the opening 64.
In the preferred embodiment, the fluid 68, such as a carbonated beverage such as beer, is in the container means 60 prior to the insertion of the expandable pouch means 2. If desired, the expandable pouch means 2 can be inserted into the container means 60 prior to the filling of it with the fluid. The fluid level 70 is slightly below the dispensing means 66. The strip 18 forming sub-compartment 22 is ruptured prior to the insertion of the expandable pouch means 2 into the container means 60 so that the gas generating system is in operation, as described above, and the first compartment 14 has been at least partially expanded in the illustration in Fig. S. The container means 60 is illustrated in the fluid dispensable position in Figs.
6 and 7. Another support member 72 has been pre-viously secured to the container means 60. Thesupport member 62 and the support member 72 have planar surfaces 74 and 76 for supporting the container means 60 on a generally horizontal surface, such as a shelf of a home refrigerator. The planar surfaces 74 and 76 also function to maintain the container means 60 in such fluid dispensable position. While it is highly preferred to use the horizontal dispensing position, it is understood that the pressure in the container means provided by the expandable pouch means would permit dispensing in other positions, some of which may require different types of dispensing means.
In Fig. 6, more than half of the fluid has been dispensed from the container means 60. The first compartment 14 and several of the next adjacent other compartments 16 have been expanded, as described above, to form a combined compartment which is located adjacent to the upper longitudinally extending portion of the container means 60. In Fig. 7, the expandable pouch means 2 is substantially fully expanded and is substantially completely in contact with the inner surface of the container means 60 except for the portion defining the opening 64. After substantially all the fluid 68 has been dispensed from the container means 60, a pressure relieving device (not shown) in the dispensing means 66 is actuated and the carbon dioxide gas in the expanded pouch means 2 is removed through the dispensing means 46 so that the container means 60 and the expandable pouch means 2 are substantially at atmospheric pressure and the container means 60 can be safely placed in the trash.
When the expandable pouch means 2 is being inserted into the container means 60, the strips 18 are generally parallel with the longitudinal axis of container means 60. As explained above, the relative length of the expandable pouch means 2 causes it to be crumpled as it is inserted into the container means 60. However, the strips 18 still extend generally in the same direction as the longitudinal axis of the con-tainer means 60. As fluid is dispensed from the container means 60 and more of the other compartments 16 are ex-panded, the expanded portion of the expandable pouch means 2 gradually moves into a position wherein its longitudinal axis is parallel to the longitudinal axis of the container means 60, as illustrated in Fig.
6. When the expandable pouch means 2 is fully expanded, as illustrated in Fig. 7, the longitudinal axes of the expandable pouch means 2 and the container means 60 will substantially coincide.
As illustrated in Figs. 5 - 7, the container means 60 comprises a blown hollow integral plastic container means made of one piece of integrally molded plastic material, such as polyethylene terephthalate (PET), and having a hemispherical top portion 78, an annular cylindrical central portion 80, a hemi-spherical bottom portion 82 and a neck portion 84 defining the opening 64. The container means 60 is large enough to hold 288 fluid ounces of a beverage.
The expandable pouch means 2 may be of any size and shape so as to be commensurate with the size and shape of the container means 60 with which it is to be used. Also, the expandable pouch means 2 may be ùsed to dispense any kind of material from the container means as is customary in this art. However, in the preferred embodiment of the invention, the ex-pandable pouch means 2 is designed for applying pressure to a quantity of beer equal to 288 fluid ounces or 2.25 gallons in a container means 60. The following example described an expandable pouch means 2 designed for such a container means wherein the container means 60 has an overall length along its longitudinal axis of about 15.5 inches, an external diameter of the cylindrical central portion 70 of about 9.0 inches, an average wall thickness of about 0.030 inches and wherein it is desired to maintain a pressure profile within the container means between 18 and 25 psig. The expandable pouch means 2 has a overall length of about 17 inches and an overall width of about 15.5 inches and has nine compartments formed therein.
The following table lists the various parameters involved in dispensing a beverage from a container wherein the container has an overflow volume of about 10.2 liters and contains 8.52 liters of beer at a temperature of about 38 D F. and at a pressure equal to that at an altitude of about 5,000 feet. In the table the head space volume is listed as 1.220799 liters. This is the volume to which the first com-partment 14 will expand to before any beer is dispens-ed from the container. The first compartment will ex-pand to a volume of 1.565575 liters before the peel-able seam strip 18 between it and the next adjacentother compartment is ruptured. The first compartment 14 or sub-compartment 26 will contain 100 grams of sodium bicarbonate, which is more than the stoichio-metric amount necessary to react with the citric acid to produce the required pressurizing gas, combined with 170 ml of water and any other desired additional ingredients.
Setup conditions:
Product Volume to be dispensed (L) 8.520001 Product Overage Volume (L) 0.0592 Absolute Pressure (PSIA) 12 Starting Gauge Pressure (PSIG) 25 Low Limit Operating Pressure (PSIG) 18 High Limit Operating Pressure (PSIG) 25 Starting Process Temperature (F) 38 Pouch/Chemical Total Displacement Vol (L) 0.35 Tap Displacement Volume (L) 0.05 25 Container Overflow Volume (L) 10.2 Head Space Liquid Volume (L) 0.17 The following are pouch design parameters based on the above setup conditions:
Head Space Volume (L) 1.220799 Total Charging Gas (Moles) 0.164039 Acid Required to charge to Start Press.(GMS) 10.49849 50% Conc. Acid required for Start Press.(ML) 16.93305 Theoretical sodium bicarbonate required (gms) 75.76741 Actual sodium bicarbonate included (gms)100.000 Sodium bicarbonate in tablet (gms) 1.00 N ~ ~ ~ N
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The pouch seam locations below are measured between the inside edge of the first permanent seam and the trailing edge of each peelable compartment seam:
Comp No. Comp Vol Seam at (L) (inches) 1 1.565575 5.404052 2 1.992217 6.073413 3 2.520163 6.873369 4 3.173466 7.779452 3.981892 7.734003 6 4.982274 9.794613 7 6.220191 10.90686 8 7.752043 12.25709 Final 9.740799 15 While an illustrative and presently preferred embodiment of the invention has been described in detail herein, it is to be understood that the inventive concepts may be otherwise variously embodied and employed and that the appended claims are intended to be construed to include such variations except insofar as limited by the prior art.
This invention provides a new, improved self-generating pressure applying means, such as an expandable pouch means, which is particularly designed and constructed so that it cooperates with the container means in which it is contained to ensure that substantially all of the material contained within the container is dispensed therefrom and maintains the pressure within the container means within a desired range of pressure during the dispensing operation. The expandable pouch means of this invention is particularly useful wherever it is undesirable to add additional C02 to the material in the container and where it is desirable to maintain substantially constant pressure on the material in the container during the entire dispensing operation.
In the presently preferred embodiment of the invention, the self-generating pressure applying means comprises an expandable pouch means comprising two relatively flat sheets of a gas and liquid impermeable plastic material in superposed relationship and having a octagonal shape having a length and a width and with the edge portions thereof joined by permanent sealing means. The expandable pouch means is located within the container means so that as the expandable pouch means expands, as described below, it applies pressure to the material in the container means which in the preferred embodiment is a liquid, such as a beverage such as beer. The expandable pouch means is divided into a plurality of compartments by lengthwise extending strips of semipermanent, peelable sealing means. The expandable pouch means is inserted into the container means so that the lengthwise extending strips are, as much as possible, generally parallel to the longitudinal axis of the container means and will move more closely to such relationship as liquid is dispensed from the container means. Two compartments of a gas generating system are contained in one relatively large compartment in the expandable pouch means and each of the other compartments thereof contains a supply of one of the two components. When the two components are exposed in the one compartment, they react to start generating gas to create a pressure in the one compartment so that the portions of the superposed flat sheets forming the one compartment are forced apart. As fluid is dispensed from the container, the one compartment continues to expand and as it expands, it applies a force on the strip of semipermanent, peelable sealing means between the one compartment and the next adjacent other compartment until such strip is ruptured. The one component of the gas generating system in the next adjacent other compartment reacts with the components in the one compartment to continue the generation of gas in the combined one compartment and next adjacent other compartment. The expansion of the expandable pouch means continues until substantially all of the fluid has been dispensed from the container means. As successive other compartments are expanded, the expanded portion of the expandable pouch means will take a shape generally corresponding to the shape of the container means. Puncture means (not described in this application) are then actuated to let the gas pressure escape from the expandable pouch means and the container means so that they may be safely placed in the trash.
An illustrative and presently preferred embodiment of the invention is shown in the accompanying drawings in which:
Fig. 1 is a front elevational view with portions broken away illustrating an expandable pouch means and the components of a gas generating system;
Fig. 2 is a cross-sectional view taken on the line 2-2 of Fig. l;
Fig. 3 is a cross-sectional view of a partially expanded expandable pouch means;
Fig. 4 is a cross-sectional view of a container for holding one component of a gas generating system;
Fig. 5 is a cross-sectional view, except for the dispensing means, illustrating a container means and its supporting structure in an upright position for shipping and commercial storage and a partially expanded expandable pouch means;
Fig. 6 is a view similar to Fig. 5 but with the container means in a dispensing position and after more than half of the fluid has been dispensed; and Fig. 7 is a view similar to Fig. 5 but after substantially all of the fluid has been dispensed.
An expandable pouch means 2 of the presently preferred embodiment is illustrated in Figs. 1 - 3 and comprises two relatively flat sheets 4 and 6 of a flexible plastic material in superposed relationship and made from a gas and liquid impermeable material such as a composite material of an outside layer of a polyester with an inside coating of PVDC, a layer of polyethylene and a layer of an ionomer resin, such as that marketed by Dupont under the trade designation SURLY ~. Each of the flat sheets 4 and 6 is octagonal in shape having a length greater than its width and with peripheral edge portions 8 and 10 permanently joined together by a permanent sealing means 12 formed by heat sealing at a temperature of about 300F. for 0.5 second. The expandable pouch 2 is formed into a first compartment 14 and a plurality of other compartments 16 by a plurality of lengthwise extending strips 18 which join together opposed portions of the 3S flat sheets 4 and 6 using a semipermanent peelable sealing means 20 formed by heat sealing at a temperature of about 250F. for 0.5 second. If the flat sheets 4 and 6 are formed from different plastic materials, the temperature and time would be ad~usted as required to obtain the desired type of seal. Also, if desirable, a suitable adhesive could be used to obtain the desired results.
The normal operation of an expandable pouch means 2 uses some delaying system so that the chemical reaction can be started and still allow for sufficient time for expandable pouch means 2 to be inserted into the container means and suitable sealing and dispensing means applied to the container means. The delaying system for this invention is illustrated in Fig. 1 wherein the first compartment is sub-divided to three sub-compartments 22, 24 and 26. The sub-compartment 22 is formed by a lengthwise extendingstrip 18, as described above, extending parallel to the next adjacent permanent lengthwise extending sealed edge portions 8 and 10. The sub-compartments 24 and 26 are formed by a lengthwise extending strip 18, as described above, extending parallel to and spaced inwardly from the strip 18 forming sub-compartment 22. The lower portion 28 of the strip 18 forming the sub-compartments 24 and 26 has a reduced width for a purpose described below. A quantity of 25 one component 30 of a two component gas generating system, such as a 50% citric acid solution, is contained in the sub-compartment 22. A tablet 32 comprising the other component of the two component gas generating system, such as concentrated sodium 30 bicarbonate, is contained in the sub-compartment 24.
A water solution 34 of sodium bicarbonate is contained in the sub-compartment 26. The other compartments 16 each contain a quantity of the one component 30.
In operation, a force is applied to the sub-35 compartment 22 to rupture the strip 18 so that thecitric acid solution 24 flows into sub-compartment 24 to contact the other component, comprising the sodium carbonate tablet 32, and begins to react therewith to generate carbon dioxide gas. This reaction with the tablet 32 proceeds at a rate to provide the above-described delaying system to allow the expandable pouch means 2 to be inserted into the container means and suitable sealing and dispensing means applied to the container means. The generation of the carbon dioxide gas forms a pressurized force forcing the strip 18 between the sub-compartment 24 and the sub-compartment 26 to rupture at the weakened reducedwidth 28 to combine the sub-compartments 24 and 26.
This permits the citric acid solution to flow into sub-compartment 26 and into contact with the water solution 34 of sodium bicarbonate and further react to continue the generation of carbon dioxide gas. As the generation of the carbon dioxide gas continues, the pressure within the first compartment 14 is increased so as to expand the portions of the flat sheets 4 and 6 forming the first compartment 14. The dispensing of fluid from the container means, as described below, will provide space for further expansion of the expandable pouch means 2. When the limit of the volume of the first compartment 14 is reached, further generation of carbon dioxide gas therein will result in a force being applied to the strip 18 between the first compartment 14 and the next adjacent other compartment 16 so as to rupture such strip 18. The citric acid solution 24 in the next adjacent other compartment 16 will contact the water solution 34 of sodium bicarbonate to continue the generation of carbon dioxide gas. This sequence will continue until the expandable pouch means 2 has been substantially completely expanded.
Another embodiment for the provision of the citric acid solution in the first compartment 14 is illustrated in Fig. 4 and is particularly useful when the fluid in the container means is a carbonated beverage, such as beer. A substantially rigid container 40, which in the preferred embodiment is plastic, has a closed end 42 and an open end 44. The container 40 is illustrated as being a tube but it is to be understood that it can be of any desired geometrical configuration. A barb 46 is secured to the inner surface 48 of the container 40 with its pointed end 50 facing and relatively close to the open end 44. A quantity of the citric acid solution 24 is placed in the container 40 and the open end 44 is sealed by a flexible membrane 52. The strips 18 forming the sub-compartments 22, 24 and 26 are not used in this modification so that the first compartment 14 is one unitary compartment. The filled container 40 is contained in the first compartment 14 with the water solution 34 of sodium bicarbonate.
After the expandable pouch means 2 has been inserted into the container means filled with a carbonated beverage, as described below, the pressures generated by the carbonated beverage in the container means will exert a pressure on the flexible membrane 52 moving it into contact with the pointed end 50 to rupture the flexible membrane 52 and permit the citric acid solution 24 to flow into the water solution 34 of sodium bicarbonate in first compartment 14 to start the carbon dioxide gas generating system.
The location of the expandable pouch means 2 in a container means 60 is illustrated in Figs. 5 - 7.
In Fig. 5, the container means 60 is supported in the upright position for shipping and commercial storage by a support member 62. The expandable pouch means 2 has a length substantially greater than the longitudinal extent of the container means 60 and a width substantially greater than the diameter of the container means 60. Therefore, in order to insert the expandable pouch means 2 through an opening 64 in the container means 60, it is necessary to apply a force in a widthwise direction to compact the expandable pouch means 2 in that direction so that its cross-sectional configuration is less than the cross-sectional configuration of the opening 64. Also, as the expandable pouch means 2 i8 inserted into the container means 60, it i8 necessary to apply a force in the lengthwise direction to push the expanda~le pouch means 2 into the container means 60. This results in a crumpling of the expandable pouch means 2 in the lengthwise direction. Since the material in the expandable pouch means 2 has little tendency to resile, it will remain crumpled while a dispensing means 66 for dispensing portions of the material in the container means 60 is assembled in the opening 64.
In the preferred embodiment, the fluid 68, such as a carbonated beverage such as beer, is in the container means 60 prior to the insertion of the expandable pouch means 2. If desired, the expandable pouch means 2 can be inserted into the container means 60 prior to the filling of it with the fluid. The fluid level 70 is slightly below the dispensing means 66. The strip 18 forming sub-compartment 22 is ruptured prior to the insertion of the expandable pouch means 2 into the container means 60 so that the gas generating system is in operation, as described above, and the first compartment 14 has been at least partially expanded in the illustration in Fig. S. The container means 60 is illustrated in the fluid dispensable position in Figs.
6 and 7. Another support member 72 has been pre-viously secured to the container means 60. Thesupport member 62 and the support member 72 have planar surfaces 74 and 76 for supporting the container means 60 on a generally horizontal surface, such as a shelf of a home refrigerator. The planar surfaces 74 and 76 also function to maintain the container means 60 in such fluid dispensable position. While it is highly preferred to use the horizontal dispensing position, it is understood that the pressure in the container means provided by the expandable pouch means would permit dispensing in other positions, some of which may require different types of dispensing means.
In Fig. 6, more than half of the fluid has been dispensed from the container means 60. The first compartment 14 and several of the next adjacent other compartments 16 have been expanded, as described above, to form a combined compartment which is located adjacent to the upper longitudinally extending portion of the container means 60. In Fig. 7, the expandable pouch means 2 is substantially fully expanded and is substantially completely in contact with the inner surface of the container means 60 except for the portion defining the opening 64. After substantially all the fluid 68 has been dispensed from the container means 60, a pressure relieving device (not shown) in the dispensing means 66 is actuated and the carbon dioxide gas in the expanded pouch means 2 is removed through the dispensing means 46 so that the container means 60 and the expandable pouch means 2 are substantially at atmospheric pressure and the container means 60 can be safely placed in the trash.
When the expandable pouch means 2 is being inserted into the container means 60, the strips 18 are generally parallel with the longitudinal axis of container means 60. As explained above, the relative length of the expandable pouch means 2 causes it to be crumpled as it is inserted into the container means 60. However, the strips 18 still extend generally in the same direction as the longitudinal axis of the con-tainer means 60. As fluid is dispensed from the container means 60 and more of the other compartments 16 are ex-panded, the expanded portion of the expandable pouch means 2 gradually moves into a position wherein its longitudinal axis is parallel to the longitudinal axis of the container means 60, as illustrated in Fig.
6. When the expandable pouch means 2 is fully expanded, as illustrated in Fig. 7, the longitudinal axes of the expandable pouch means 2 and the container means 60 will substantially coincide.
As illustrated in Figs. 5 - 7, the container means 60 comprises a blown hollow integral plastic container means made of one piece of integrally molded plastic material, such as polyethylene terephthalate (PET), and having a hemispherical top portion 78, an annular cylindrical central portion 80, a hemi-spherical bottom portion 82 and a neck portion 84 defining the opening 64. The container means 60 is large enough to hold 288 fluid ounces of a beverage.
The expandable pouch means 2 may be of any size and shape so as to be commensurate with the size and shape of the container means 60 with which it is to be used. Also, the expandable pouch means 2 may be ùsed to dispense any kind of material from the container means as is customary in this art. However, in the preferred embodiment of the invention, the ex-pandable pouch means 2 is designed for applying pressure to a quantity of beer equal to 288 fluid ounces or 2.25 gallons in a container means 60. The following example described an expandable pouch means 2 designed for such a container means wherein the container means 60 has an overall length along its longitudinal axis of about 15.5 inches, an external diameter of the cylindrical central portion 70 of about 9.0 inches, an average wall thickness of about 0.030 inches and wherein it is desired to maintain a pressure profile within the container means between 18 and 25 psig. The expandable pouch means 2 has a overall length of about 17 inches and an overall width of about 15.5 inches and has nine compartments formed therein.
The following table lists the various parameters involved in dispensing a beverage from a container wherein the container has an overflow volume of about 10.2 liters and contains 8.52 liters of beer at a temperature of about 38 D F. and at a pressure equal to that at an altitude of about 5,000 feet. In the table the head space volume is listed as 1.220799 liters. This is the volume to which the first com-partment 14 will expand to before any beer is dispens-ed from the container. The first compartment will ex-pand to a volume of 1.565575 liters before the peel-able seam strip 18 between it and the next adjacentother compartment is ruptured. The first compartment 14 or sub-compartment 26 will contain 100 grams of sodium bicarbonate, which is more than the stoichio-metric amount necessary to react with the citric acid to produce the required pressurizing gas, combined with 170 ml of water and any other desired additional ingredients.
Setup conditions:
Product Volume to be dispensed (L) 8.520001 Product Overage Volume (L) 0.0592 Absolute Pressure (PSIA) 12 Starting Gauge Pressure (PSIG) 25 Low Limit Operating Pressure (PSIG) 18 High Limit Operating Pressure (PSIG) 25 Starting Process Temperature (F) 38 Pouch/Chemical Total Displacement Vol (L) 0.35 Tap Displacement Volume (L) 0.05 25 Container Overflow Volume (L) 10.2 Head Space Liquid Volume (L) 0.17 The following are pouch design parameters based on the above setup conditions:
Head Space Volume (L) 1.220799 Total Charging Gas (Moles) 0.164039 Acid Required to charge to Start Press.(GMS) 10.49849 50% Conc. Acid required for Start Press.(ML) 16.93305 Theoretical sodium bicarbonate required (gms) 75.76741 Actual sodium bicarbonate included (gms)100.000 Sodium bicarbonate in tablet (gms) 1.00 N ~ ~ ~ N
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The pouch seam locations below are measured between the inside edge of the first permanent seam and the trailing edge of each peelable compartment seam:
Comp No. Comp Vol Seam at (L) (inches) 1 1.565575 5.404052 2 1.992217 6.073413 3 2.520163 6.873369 4 3.173466 7.779452 3.981892 7.734003 6 4.982274 9.794613 7 6.220191 10.90686 8 7.752043 12.25709 Final 9.740799 15 While an illustrative and presently preferred embodiment of the invention has been described in detail herein, it is to be understood that the inventive concepts may be otherwise variously embodied and employed and that the appended claims are intended to be construed to include such variations except insofar as limited by the prior art.
Claims (8)
1. A self-generating pressure applying means which is inserted into a container means having material contained therein so as to apply a pressure on the material so that it may be readily dispensed from the container means comprising:
an expandable pouch means for applying pressure to material in a container comprising at least two relatively flat sheets of a gas and liquid imper-meable material in superposed relationship and having a length and a width with said length having a greater linear extent than said width;
said expandable pouch means having a plurality of linearly extending edge portions;
permanent sealing means for joining said superposed flat sheets along said edge portions so as to form an enclosed space therebetween;
compartment forming means between said superposed flat sheets for forming at least three compartments in said expandable pouch means;
said compartment forming means comprising length-wise extending strips, having end portions joining said sealed edge portions, of a semi-permanent peelable sealing means for securing together super-posed portions of said superposed flat sheets so that all of said compartments are completely closed;
said semi-permanent peelable sealing means permitting separation of said superposed portions of said superposed flat sheets in response to pressure applied thereto;
gas pressure generating means in one of said compart-ments to increase the gas pressure in said one compartment so that, as portions of the material are dispensed from said container, portions of said superposed flat sheets forming said one compart-ment are forced apart to apply pressure to said semi-permanent peelable sealing means between said one compartment and a first next adjacent compartment so that said one compartment and said first next adjacent compartment are joined together to form a combined compartment;
at least a second next adjacent compartment;
gas pressure generating means in said first next adjacent compartment cooperating with said gas pressure generating means in said one compartment to continue the generation of gas pressure to force apart the portions of said superposed sheets forming said combined compartment as said material is dispensed from said container means to apply pressure to separate said semi-permanent peelable sealing means between said combined compartment and said at least a second adjacent compartment so that said combined compartment and said at least a second next adjacent compartment are joined together to form a large combined compartment;
said gas pressure generating means in said one com-partment comprising first and second reactive components of a chemical gas generating system;
said gas pressure generating means in all of the other compartments comprises said first of said two reactive components;
said expandable pouch means being located within a container having a gas pressure generating beverage container therein;
said first reactive component of said two component chemical gas generating system in said one compartment comprises a liquid wherein said gas pressure generating means in said one compartment comprises;
at least said first reactive component being confined within an enclosure having rupturable means so that said enclosure may be ruptured allowing said first reactive component to react with said second reactive component to commence generating a gas;
said enclosure comprising a rigid container having at least one open end located in said first compartment;
a flexible membrane covering said open end and in sealed engagement therewith so as to contain a quantity of said first reactive component in said container;
membrane rupturing means in said container and located next to said open end so as to pierce said flexible membrane when said flexible membrane is forced into said container by pressure forces generated within said container so as to release said liquid first component into said first compartment.
an expandable pouch means for applying pressure to material in a container comprising at least two relatively flat sheets of a gas and liquid imper-meable material in superposed relationship and having a length and a width with said length having a greater linear extent than said width;
said expandable pouch means having a plurality of linearly extending edge portions;
permanent sealing means for joining said superposed flat sheets along said edge portions so as to form an enclosed space therebetween;
compartment forming means between said superposed flat sheets for forming at least three compartments in said expandable pouch means;
said compartment forming means comprising length-wise extending strips, having end portions joining said sealed edge portions, of a semi-permanent peelable sealing means for securing together super-posed portions of said superposed flat sheets so that all of said compartments are completely closed;
said semi-permanent peelable sealing means permitting separation of said superposed portions of said superposed flat sheets in response to pressure applied thereto;
gas pressure generating means in one of said compart-ments to increase the gas pressure in said one compartment so that, as portions of the material are dispensed from said container, portions of said superposed flat sheets forming said one compart-ment are forced apart to apply pressure to said semi-permanent peelable sealing means between said one compartment and a first next adjacent compartment so that said one compartment and said first next adjacent compartment are joined together to form a combined compartment;
at least a second next adjacent compartment;
gas pressure generating means in said first next adjacent compartment cooperating with said gas pressure generating means in said one compartment to continue the generation of gas pressure to force apart the portions of said superposed sheets forming said combined compartment as said material is dispensed from said container means to apply pressure to separate said semi-permanent peelable sealing means between said combined compartment and said at least a second adjacent compartment so that said combined compartment and said at least a second next adjacent compartment are joined together to form a large combined compartment;
said gas pressure generating means in said one com-partment comprising first and second reactive components of a chemical gas generating system;
said gas pressure generating means in all of the other compartments comprises said first of said two reactive components;
said expandable pouch means being located within a container having a gas pressure generating beverage container therein;
said first reactive component of said two component chemical gas generating system in said one compartment comprises a liquid wherein said gas pressure generating means in said one compartment comprises;
at least said first reactive component being confined within an enclosure having rupturable means so that said enclosure may be ruptured allowing said first reactive component to react with said second reactive component to commence generating a gas;
said enclosure comprising a rigid container having at least one open end located in said first compartment;
a flexible membrane covering said open end and in sealed engagement therewith so as to contain a quantity of said first reactive component in said container;
membrane rupturing means in said container and located next to said open end so as to pierce said flexible membrane when said flexible membrane is forced into said container by pressure forces generated within said container so as to release said liquid first component into said first compartment.
2. A self-generating pressure applying means as claimed in claim 1 and further comprising:
said container having an inner surface; and said membrane rupturing means comprises a pointed barb secured to said inner surface with the point of said pointed barb facing said flexible membrane.
said container having an inner surface; and said membrane rupturing means comprises a pointed barb secured to said inner surface with the point of said pointed barb facing said flexible membrane.
3. A self-generating pressure applying means which is inserted into a container means having material contained therein so as to apply a pressure on the material so that it may be readily dispensed from the container means comprising:
an expandable pouch means for applying pressure to material in a container comprising at least two relatively flat sheets of a gas and liquid impermeable material in superposed relationship and having a length and a width, said length having a greater linear extent than said width;
said expandable pouch means having a plurality of linearly extending edge portions;
permanent sealing means for joining said superposed flat sheets along said edge portions so as to form an enclosed space therebetween;
compartment forming means between said superposed flat sheets for forming at least three compartments in said expandable pouch means;
said compartment forming means comprising lengthwise extending strips, having end portions joining said sealed edge portions, of a semi-permanent peelable sealing means for securing together superposed portions of said superposed flat sheets so that all of said compartments are completely closed;
said semi-permanent peelable sealing means permitting separation of said superposed portions of said superposed flat sheets in response to pressure applied thereto;
gas pressure generating means in one of said compartments to increase the gas pressure in said one compartment so that, as portions of the material are dispensed from said container, portions of said superposed flat sheets forming said one compartment are forced apart to apply pressure to separate said semi-permanent peelable sealing means between said one compartment and a first next adjacent compartment so that said one compartment and said first next adjacent compartment are joined together to form a combined compartment;
at least a second next adjacent compartment;
gas pressure generating means in said first next adjacent compartment cooperating with said gas pressure generating means in said one compartment to continue the generation of gas pressure to force apart the portions of said superposed sheets forming said combined compartment as said material is dispensed from said container means to apply pressure to separate said semi-permanent peelable sealing means between said combined compartment and said at least a second next adjacent compartment so that said combined compartment and said at least a second next adjacent compartment are joined together to form a larger combined compartment;
said gas pressure generating means in said one compartment comprising first and second reactive components of a chemical gas generating system;
said gas pressure generating means in all of the other compartments comprises said first of said two reactive components;
wherein said gas generating means in said one compartment comprises:
lengthwise extending strips of a semi-permanent peelable sealing means for dividing said one first compartment into at least first, second and third completely enclosed sub-compartments;
said first reactive component of said chemical gas generating system contained within said first sub-compartment said second reactive component of said chemical gas generating system contained within said second sub-compartment next adjacent to said first sub-compartment so that when said lengthwise strip between said first and second sub-compartments is ruptured, said first and second reactive components will begin to react to produce a gas pressure therein; and a quantity of said second reactive component, in an amount sufficient to fully expand said expandable pouch means, in said third sub-compartment next adjacent to said second sub-compartment to react with unreacted portions of said first reactive component when said first and second reactive components in said combined first and second sub-compartments have reacted to produce sufficient gases to provide a pressure to rupture said lengthwise strip between said second and third sub-compartments to continue the generation of gas.
an expandable pouch means for applying pressure to material in a container comprising at least two relatively flat sheets of a gas and liquid impermeable material in superposed relationship and having a length and a width, said length having a greater linear extent than said width;
said expandable pouch means having a plurality of linearly extending edge portions;
permanent sealing means for joining said superposed flat sheets along said edge portions so as to form an enclosed space therebetween;
compartment forming means between said superposed flat sheets for forming at least three compartments in said expandable pouch means;
said compartment forming means comprising lengthwise extending strips, having end portions joining said sealed edge portions, of a semi-permanent peelable sealing means for securing together superposed portions of said superposed flat sheets so that all of said compartments are completely closed;
said semi-permanent peelable sealing means permitting separation of said superposed portions of said superposed flat sheets in response to pressure applied thereto;
gas pressure generating means in one of said compartments to increase the gas pressure in said one compartment so that, as portions of the material are dispensed from said container, portions of said superposed flat sheets forming said one compartment are forced apart to apply pressure to separate said semi-permanent peelable sealing means between said one compartment and a first next adjacent compartment so that said one compartment and said first next adjacent compartment are joined together to form a combined compartment;
at least a second next adjacent compartment;
gas pressure generating means in said first next adjacent compartment cooperating with said gas pressure generating means in said one compartment to continue the generation of gas pressure to force apart the portions of said superposed sheets forming said combined compartment as said material is dispensed from said container means to apply pressure to separate said semi-permanent peelable sealing means between said combined compartment and said at least a second next adjacent compartment so that said combined compartment and said at least a second next adjacent compartment are joined together to form a larger combined compartment;
said gas pressure generating means in said one compartment comprising first and second reactive components of a chemical gas generating system;
said gas pressure generating means in all of the other compartments comprises said first of said two reactive components;
wherein said gas generating means in said one compartment comprises:
lengthwise extending strips of a semi-permanent peelable sealing means for dividing said one first compartment into at least first, second and third completely enclosed sub-compartments;
said first reactive component of said chemical gas generating system contained within said first sub-compartment said second reactive component of said chemical gas generating system contained within said second sub-compartment next adjacent to said first sub-compartment so that when said lengthwise strip between said first and second sub-compartments is ruptured, said first and second reactive components will begin to react to produce a gas pressure therein; and a quantity of said second reactive component, in an amount sufficient to fully expand said expandable pouch means, in said third sub-compartment next adjacent to said second sub-compartment to react with unreacted portions of said first reactive component when said first and second reactive components in said combined first and second sub-compartments have reacted to produce sufficient gases to provide a pressure to rupture said lengthwise strip between said second and third sub-compartments to continue the generation of gas.
4. A self-generating pressure applying means as claimed in claim 3 wherein:
said lengthwise strip between said second and third sub-compartments has a weakened portion to facilitate rupturing thereof.
said lengthwise strip between said second and third sub-compartments has a weakened portion to facilitate rupturing thereof.
5. A self-pressurizing dispensing container means for liquids of the type having a container means, a liquid dispensing means mounted on the container means, a liquid within the container means and a self-generating pressure applying means within the container means for applying pressure on the liquid comprising:
a hollow plastic container means made of one piece of integrally molded plastic material for holding a liquid to be selectively dispensed therefrom when located in a dispensing position;
liquid dispensing means mounted on said container means for dispensing liquid from said container means;
said container means having an elongated central generally cylindrical wall portion, an integral generally hemispherical closed first end wall portion, and an integral generally hemispherical second end wall portion having a central longitudinally extending neck portion with a relatively large diameter central opening of sufficient size for filling said container means with a liquid and for inserting said pressure applying means and having means for securing said dispensing means thereto to provide a sealing relationship therewith and having a longitudinal axis extending through said central opening;
support means fixedly attached to said container means supporting and maintaining said container means in said dispensing position;
self-generating pressure applying means in said container means for applying pressure to said liquid in said container means comprising:
an expandable pouch means for applying said pressure comprising at least two relatively flat sheets of a gas and liquid impermeable material in superposed relationship and having a length and a width with said length having a greater linear extent than said width;
said expandable pouch means having a plurality of linearly extending edge portions;
permanent sealing means for joining said superposed flat sheets along said edge portions so as to form an enclosed spaced therebetween;
compartment forming means between said superposed flat sheets for forming at least three compartments in said expandable pouch means;
said compartment forming means comprising lengthwise extending strips, having end portions joining said sealed edge portions of a semi-permanent peelable sealing means securing together superposed portions of said superposed flat sheets;
said semi-permanent peelable sealing means permitting separation of said superposed portions of said superposed flat sheets in response to pressure applied thereto;
gas pressure generating means in one of said compartments to increase the gas pressure in said one compartment so that the portions of said superposed flat sheets forming said one compartment are forced apart to apply pressure to separate said semi-permanent peelable sealing means between said one compartment and a first next adjacent compartment so that said one compartment and said first next adjacent compartment are joined together to form a combined compartment;
at least a second next adjacent compartment;
gas pressure generating means in said first next adjacent compartment cooperating with said gas pressure generating means in said one compartment to continue the generation of gas pressure to force apart the portions of said superposed sheets forming said combined compartment as said beverage is dispensed from said container means to apply pressure to separate said semi-permanent peelable sealing means between said combined compartment and said at least a second next adjacent compartment so that said combined compartment and said at least next adjacent second compartment are joined together to form a larger combined compartment;
said expandable pouch means being located within said container means so that said lengthwise extending strips of said semi-permanent peelable sealing means extend generally in the same direction as said longitudinal axis of said container means; and said one compartment and thereafter each of said combined compartments of said expandable pouch being located next adjacent to the upper longitudinally extending portion of said container means when in its dispensing position.
a hollow plastic container means made of one piece of integrally molded plastic material for holding a liquid to be selectively dispensed therefrom when located in a dispensing position;
liquid dispensing means mounted on said container means for dispensing liquid from said container means;
said container means having an elongated central generally cylindrical wall portion, an integral generally hemispherical closed first end wall portion, and an integral generally hemispherical second end wall portion having a central longitudinally extending neck portion with a relatively large diameter central opening of sufficient size for filling said container means with a liquid and for inserting said pressure applying means and having means for securing said dispensing means thereto to provide a sealing relationship therewith and having a longitudinal axis extending through said central opening;
support means fixedly attached to said container means supporting and maintaining said container means in said dispensing position;
self-generating pressure applying means in said container means for applying pressure to said liquid in said container means comprising:
an expandable pouch means for applying said pressure comprising at least two relatively flat sheets of a gas and liquid impermeable material in superposed relationship and having a length and a width with said length having a greater linear extent than said width;
said expandable pouch means having a plurality of linearly extending edge portions;
permanent sealing means for joining said superposed flat sheets along said edge portions so as to form an enclosed spaced therebetween;
compartment forming means between said superposed flat sheets for forming at least three compartments in said expandable pouch means;
said compartment forming means comprising lengthwise extending strips, having end portions joining said sealed edge portions of a semi-permanent peelable sealing means securing together superposed portions of said superposed flat sheets;
said semi-permanent peelable sealing means permitting separation of said superposed portions of said superposed flat sheets in response to pressure applied thereto;
gas pressure generating means in one of said compartments to increase the gas pressure in said one compartment so that the portions of said superposed flat sheets forming said one compartment are forced apart to apply pressure to separate said semi-permanent peelable sealing means between said one compartment and a first next adjacent compartment so that said one compartment and said first next adjacent compartment are joined together to form a combined compartment;
at least a second next adjacent compartment;
gas pressure generating means in said first next adjacent compartment cooperating with said gas pressure generating means in said one compartment to continue the generation of gas pressure to force apart the portions of said superposed sheets forming said combined compartment as said beverage is dispensed from said container means to apply pressure to separate said semi-permanent peelable sealing means between said combined compartment and said at least a second next adjacent compartment so that said combined compartment and said at least next adjacent second compartment are joined together to form a larger combined compartment;
said expandable pouch means being located within said container means so that said lengthwise extending strips of said semi-permanent peelable sealing means extend generally in the same direction as said longitudinal axis of said container means; and said one compartment and thereafter each of said combined compartments of said expandable pouch being located next adjacent to the upper longitudinally extending portion of said container means when in its dispensing position.
6. A self-generating pressure applying means as claimed in claim 5, wherein said gas pressure generating means in said one compartment comprises:
a chemical gas generating system comprising at least two reactive components; and at least a first of said reactive components being confined within an enclosure having rupturable means so that said enclosure may be ruptured allowing said first reactive component to react with the second reactive component to commence generating a gas.
a chemical gas generating system comprising at least two reactive components; and at least a first of said reactive components being confined within an enclosure having rupturable means so that said enclosure may be ruptured allowing said first reactive component to react with the second reactive component to commence generating a gas.
7. A self-generating pressure applying means as claimed in claim 5 wherein said gas generating means in said one compartment comprises:
a chemical gas generating system comprising at least two reactive components;
lengthwise extending strips of a semi-permanent peelable sealing means for dividing said one compartment into at least first, second and third completely enclosed sub-compartments;
a first reactive component of said chemical gas generating system contained within said first sub-compartment;
a second reactive component of said chemical gas generating system contained within said second sub-compartment next adjacent to said first sub-compartment so that when said lengthwise strip between said first and second sub-compartments is ruptured, said first and second reactive components will begin to react to produce a gas pressure therein; and a quantity of said second reactive component, in an amount sufficient to fully expand said expandable pouch means, in said third sub-compartment next adjacent to said second sub-compartment to react with unreacted portions of said first reactive component when said first and second reactive components in said combined first and second sub-compartments have reacted to produce sufficient gases to provide a pressure to rupture said lengthwise strip between said second and third sub-compartments to continue the generation of gas.
a chemical gas generating system comprising at least two reactive components;
lengthwise extending strips of a semi-permanent peelable sealing means for dividing said one compartment into at least first, second and third completely enclosed sub-compartments;
a first reactive component of said chemical gas generating system contained within said first sub-compartment;
a second reactive component of said chemical gas generating system contained within said second sub-compartment next adjacent to said first sub-compartment so that when said lengthwise strip between said first and second sub-compartments is ruptured, said first and second reactive components will begin to react to produce a gas pressure therein; and a quantity of said second reactive component, in an amount sufficient to fully expand said expandable pouch means, in said third sub-compartment next adjacent to said second sub-compartment to react with unreacted portions of said first reactive component when said first and second reactive components in said combined first and second sub-compartments have reacted to produce sufficient gases to provide a pressure to rupture said lengthwise strip between said second and third sub-compartments to continue the generation of gas.
8. A self-generating pressure applying means as claimed in claim 7 wherein:
said lengthwise strip between said second and third sub-compartments has a weakened portion to facilitate rupturing thereof.
said lengthwise strip between said second and third sub-compartments has a weakened portion to facilitate rupturing thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US034,900 | 1979-04-30 | ||
| US3490087A | 1987-04-06 | 1987-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1333169C true CA1333169C (en) | 1994-11-22 |
Family
ID=21879323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 556727 Expired - Fee Related CA1333169C (en) | 1987-04-06 | 1988-01-18 | Self generating pressure applying means for a disposable container |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0285761A1 (en) |
| JP (1) | JP2581729B2 (en) |
| AU (1) | AU616877B2 (en) |
| CA (1) | CA1333169C (en) |
| NZ (1) | NZ223131A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4923095A (en) * | 1987-04-06 | 1990-05-08 | Adolph Coors Company | Apparatus and method for generating pressures for a disposable container |
| JP2887158B2 (en) * | 1989-06-14 | 1999-04-26 | 富士ゼロックス株式会社 | Image processing device |
| AU631614B2 (en) * | 1990-03-15 | 1992-12-03 | Joy Research, Incorporated | Regulated pressurized dispenser and method |
| EP2258629B1 (en) | 2009-06-05 | 2013-09-18 | Eurokeg B.V. | Container for a pressurized beverage, in particular beer, and method of filling a container with a pressurized beverage |
| US10166561B2 (en) | 2015-06-12 | 2019-01-01 | Makinex Ip Pty Ltd | Fluid reservoir and dispensing device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3718236A (en) * | 1969-12-04 | 1973-02-27 | E Reyner | Pressurized container with non-rigid follower |
| US3827595A (en) * | 1970-07-27 | 1974-08-06 | Huck Finn Inc | Beer keg |
| IE51803B1 (en) * | 1979-12-19 | 1987-04-01 | Enviro Spray Systems Inc | Self-pressurizing dispensing container |
| US4402402A (en) * | 1981-10-14 | 1983-09-06 | Pike Brian R | Barrier seal multiple-compartment package |
-
1988
- 1988-01-08 NZ NZ22313188A patent/NZ223131A/en unknown
- 1988-01-08 AU AU10137/88A patent/AU616877B2/en not_active Ceased
- 1988-01-18 CA CA 556727 patent/CA1333169C/en not_active Expired - Fee Related
- 1988-02-05 EP EP88101702A patent/EP0285761A1/en not_active Withdrawn
- 1988-02-08 JP JP63027385A patent/JP2581729B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0285761A1 (en) | 1988-10-12 |
| NZ223131A (en) | 1990-04-26 |
| AU616877B2 (en) | 1991-11-14 |
| JP2581729B2 (en) | 1997-02-12 |
| AU1013788A (en) | 1988-10-13 |
| JPS63258796A (en) | 1988-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |