EP1836105B1 - Dispensing multi-component products - Google Patents
Dispensing multi-component products Download PDFInfo
- Publication number
- EP1836105B1 EP1836105B1 EP05853133.6A EP05853133A EP1836105B1 EP 1836105 B1 EP1836105 B1 EP 1836105B1 EP 05853133 A EP05853133 A EP 05853133A EP 1836105 B1 EP1836105 B1 EP 1836105B1
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- EP
- European Patent Office
- Prior art keywords
- valve
- valve stem
- component
- dispensing system
- sealing member
- 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.)
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- 238000007789 sealing Methods 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000008257 shaving cream Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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- 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
- B65D83/44—Valves specially adapted therefor; Regulating devices
- B65D83/48—Lift valves, e.g. operated by push action
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- 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
- B65D83/38—Details of the container body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers 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
-
- 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
- B65D83/68—Dispensing two or more contents, e.g. sequential dispensing or simultaneous dispensing of two or more products without mixing them
Definitions
- the present invention relates to dispensing multi-component products, and to valves for use in dispensing such products.
- a multi-component product e.g., a shaving cream
- the components of the product may react with each other when mixed, and it may be desired to prevent this reaction from occurring until the product is dispensed.
- One type of system includes an outer canister, a pair of nested bags within the container, defining first and second chambers for the components, and a valve constructed to allow metered dispensing of the components from the chambers by a user.
- valve assembly 17 includes a valve stem 74 mounted within a spring 72. Spring 72 biases first valve portion 76 against first valve seal 78 and second valve portion 80 against second valve seal 82, so that both valve portions are biased towards a closed position.
- Valve stem 74 also includes a central bore 79, in fluid communication with a first passage in the dispensing head, and a passage 154, in fluid communication with a second passage in the dispensing head.
- the dispensing head includes an actuating stem (not shown), which extends into and seats in a cup-shaped area 86 of the valve stem 74.
- an actuator When an actuator is depressed, the actuating stem presses valve stem 74 down, against the biasing force of spring 72. This movement simultaneously moves both valve portions away from the corresponding valve seals, moving the dispensing system to its open position, shown in Fig. 1 .
- openings 81 in the valve stem allow the first component to flow from the inner bag into bore 79, while openings 64 allow the second component to flow from the outer bag into passage 154.
- the components can also be filled into the container through the valve assembly, by pressing the valve stem down and injecting the components through the openings 64 and 81. It is generally important that, during filling, there be little or no cross-contamination between the two components. This is particularly important, for example, if the two components will react with each other when mixed.
- US 3 825 159 upon which the preamble of independent claims 1 and 10 is based discloses a pressurized multi-component dispensing system having an outer body, an inner container, a dispensing head and a valve system for controlling the flow of the components from the container.
- the invention features pressurized dispensing systems for dispensing multi-component products according to independent claims 1 and 10. Further embodiments are subject of the dependent claims.
- the inventor has found that the flat gasket seal 82 in the prior art valve assembly may allow "cross-over" between the two components, i.e., one component may enter the chamber that is reserved for the other component, especially when the components are being filled into the container through the valve.
- This cross-over effect is generally the result of the seal 82 bending or otherwise distorting during filling.
- cross-over may be exacerbated by high filling pressures and by the location of openings 64 adjacent to seal 82. Bending of seal 82 may also occur during dispensing, which may cause the two components to exit the valve at different times.
- seal 82 is replaced by a molded sealing member 100 that is dimensioned to be press-fitted into the valve body.
- Sealing member 100 includes an upper portion 102, dimensioned to sealingly seat against a shoulder 106 of valve body 108. Upper portion 102 also seals against the valve stem. Sealing member 100 also includes a smaller diameter lower portion 104, which engages the inner wall of the valve body below the shoulder 106. The lower portion 104 has an inner diameter that is greater than that of the upper portion, so that the inner wall of lower portion 104 is spaced from and does not seal against the valve stem 105.
- the sealing member contacts the inner wall of the valve body over a length sufficient to prevent the sealing member from bending, deforming or being dislodged, while allowing the valve to open without excessive axial movement of the valve stem.
- the surface area of the portion of the sealing member that contacts the inner wall is at least about 0.419 cm 2 (0.065 in 2 ), more preferably at least about 0.903 cm 2 (0.140 in 2 ).
- sealing member 100 prevents bending or other distortion of the sealing member, ensuring a secure seal even when the seal is subjected to a load, e.g., during filling of the container.
- the stability of the sealing member generally prevents cross-over and ensures that the two components will begin dispensing simultaneously each time the valve is opened.
- openings 64 of the prior art valve have been replaced by openings 110, which are spaced from upper portion 102 a sufficient distance to minimize (and preferably to eliminate) the potential for a cross-over path between the sealing member 100 and the openings 110.
- openings 110 are at least 0.134 cm (0.055 inch) from the upper surface 112 of sealing member 100, more preferably at least 0.279 cm (0.110 inch).
- the openings 110 in the valve body and the openings 114 in the valve stem are large, preferably as large as can be accommodated by the design constraints of the valve body and valve stem.
- the openings large are also unobstructed, so that the effective area through which flow can occur is substantially equal to (within 5% of) the actual area of the openings.
- the large valve openings allow a high flow rate into the nozzle during filling of the dispensing system, and minimize shear on the first and second components during filling and dispensing.
- the total area of openings 110 is at least about 0.026 cm 2 (0.004 in 2 ), more preferably at least about 0.103 cm 2 (0.016 in 2 ), and the total area of openings 114 is at least about 0.006 cm 2 (0.001 in 2 ), more preferably at least about 0.013 cm 2 (0.002 in 2 ).
- These areas are the theoretical design measurements; the actual areas of the openings are subject to tolerances and distortion of the valve during installation into the container.
- the area of the openings is selected to allow the two components to be delivered into the container through the valve during a high-speed manufacturing process. It is desirable to fill through the valve because doing so facilitates high-speed in-line processing.
- the large size of the openings also tends to reduce the filling pressure and thereby minimize shear on the composition during filling. Moreover, the larger the openings, the less influence the valve design will have on the ratio of the two components delivered during dispensing. As a result, the large openings allow fine adjustments to the ratio to be made by adjusting the design of the actuator. As a result, in some cases the same valve design can be used for a variety of products having different rheologies, with adjustments being made, to compensate for rheology, by changing the actuator design.
- a female valve stem allows design room to provide these relatively large openings. Using a female valve stem also allows the flow rate of the components out of the container to be finely controlled by the actuator, rather than by the valve. It is generally easier to accurately control the flow at the last point of exit (the actuator), rather than at the valve openings.
- valve stem is a single, unitary part, for ease of manufacturing and economy. It is also generally preferred that the lower end of the valve stem have an outer diameter that equal to or slightly greater than the inner diameter of the sealing member, so that the valve can be easily assembled by press fitting the valve stem into the valve body.
- spring 72 is supported by a spring seat 101.
- Spring seat 101 shown in detail in FIG. 6 , includes an aperture 103 that has an inner diameter ID that is only slightly larger, e.g., 5 to 20 % larger, than the outer diameter of the valve stem.
- the spring seat inhibits radial movement and bending of the valve stem. Reducing the radial movement and bending of the valve stem will tend to improve the efficiency of the valve and make it more robust.
- valve assembly 98 is crimped onto a valve cup 13.
- an outer bag 200 and an inner bag 202 are attached to the lower end of the valve assembly, as will be discussed below, and a dispensing head 50 is mounted over the valve cup 13.
- Dispensing head 50 includes an actuator 52 that may be depressed by a user to actuate valve assembly 98.
- Dispensing head 50 defines a first channel 54, for flow of the first component, and a coaxially disposed second channel 56, for flow of the second component. Channels 54 and 56 are in fluid communication with nozzle 58, through which the product is dispensed.
- the valve assembly include a skirt 204 mounted on the outer surface of the valve body 108.
- Skirt 204 includes a generally cylindrical or dome-shaped main portion 203 having an outer surface 206 configured to prevent the neck of the outer bag 200 from collapsing around the valve body (which could choke off flow to the openings 110).
- the outer surface 206 is spaced from the outer wall of valve body 108 by at least about 0.343 cm (0.135 inch), and the skirt extends axially along the length of the valve body at least about 1.588 cm (0.625 inch) from the bottom of the valve body towards the valve cup.
- the skirt 204 defines a pair of channels 207 that provide a fluid path to the openings 110 even when the outer bag 200 collapses against the outer surface 206. It is generally preferred that the skirt extend to the top of openings 110. The entire skirt may extend to the top of openings 110, or the skirt may include ribs 205 that extend upwardly from the main portion 203, as shown. Including ribs 205, rather than extending the main portion 203 to openings 110, will reduce the amount of plastic required to mold the valve body while still maintaining a flow path to openings 110.
- the ribs 205 preferably extend radially outward from the valve body the same distance as the outer surface 206 where the ribs 205 intersect with outer surface 206. At the centerline of openings 110, the ribs 205 extend outwardly at least about 0.102 cm (0.040 inch).
- valve body 108 may include only a pair of raised ribs 209, as shown in FIG. 5 .
- the ribs 209 extend axially along the valve body 108 over the same length covered by the skirt 204 discussed above.
- Skirt 204 also includes a threaded inner surface 208 configured to receive a corresponding threaded neck 209 of the inner bag 202 ( FIG. 4A ).
- the threaded connection provides a positive compression on bag gasket 201 ( FIGS. 4A and 4B ) and prevents the component in outer bag 200 from being sucked into inner bag 202. Without the threaded connection, this may tend to occur if there is a pressure differential between the inner and outer bags when the outer bag is filled.
- the threaded connection also provides a tortuous path from the bag gasket 201 to the inner bag 202, and thus inhibits flow of material into the inner bag even if the seal provided by bag gasket 201 is broken.
- the threaded connection is particularly advantageous when the two components react with each other, and thus cross-over must be minimized or eliminated altogether. In products that can tolerate some cross-over, the threaded connection can often be omitted, if desired.
- the valve may include a snap-on connection rather than a threaded connection, as shown in FIG. 5 .
- a bag-in-bag arrangement such as that shown in FIG. 4 , in which a lower portion 210 of the outer bag 200 is contoured to match the contour of the inner bag 202.
- the lower portion 210 tapers inwardly in the same manner as the corresponding lower portion of the inner bag, so that the walls of the two bags are generally parallel in this area.
- This configuration tends to prevent material from getting trapped on the bottom of the outer bag, which reduces residue and allows more product to be delivered to the consumer rather than wasted. Because less material is trapped in the bottom of the outer bag, the ratio of the two components generally remains constant as the contents of the container are dispensed.
- This bag-in-bag arrangement is discussed in US 2006/012 4663 .
Description
- The present invention relates to dispensing multi-component products, and to valves for use in dispensing such products.
- It is often necessary, or desirable, to maintain one component of a multi-component product, e.g., a shaving cream, separate from other components of the product or from some part of the container in which the product is stored.
- For example, the components of the product may react with each other when mixed, and it may be desired to prevent this reaction from occurring until the product is dispensed.
- Moreover, in some cases it is important to keep one component of a multi-component product from contacting the container holding the product due to the reactive nature of the particular component, e.g., if the component reacts with metals and the container is metal or includes metal parts such as springs.
- Other reasons for maintaining one component separate from other components include aesthetic reasons, e.g., to provide a "stripe" of one color against a background of another color when the product is dispensed.
- Various systems have been used in the past to package and dispense products containing two components so that the components are separated during storage and mixed during or just prior to dispensing. One type of system includes an outer canister, a pair of nested bags within the container, defining first and second chambers for the components, and a valve constructed to allow metered dispensing of the components from the chambers by a user.
- Systems of this type are described, for example, in
US 6 789 702 . An example of a valve assembly that may be included in the systems described inUS 6 789 702 . In use, this valve assembly is crimped into a container, and is in fluid communication with a pair of nested bags (not shown) that contain first and second components of a composition and with a dispensing head (not shown) through which the components are dispensed.Valve assembly 17 includes avalve stem 74 mounted within aspring 72.Spring 72 biasesfirst valve portion 76 againstfirst valve seal 78 andsecond valve portion 80 againstsecond valve seal 82, so that both valve portions are biased towards a closed position. Generallyvalve seals stem 74 also includes acentral bore 79, in fluid communication with a first passage in the dispensing head, and apassage 154, in fluid communication with a second passage in the dispensing head. The dispensing head includes an actuating stem (not shown), which extends into and seats in a cup-shaped area 86 of thevalve stem 74. When an actuator is depressed, the actuating stem presses valve stem 74 down, against the biasing force ofspring 72. This movement simultaneously moves both valve portions away from the corresponding valve seals, moving the dispensing system to its open position, shown inFig. 1 . When the valve opens,openings 81 in the valve stem allow the first component to flow from the inner bag intobore 79, whileopenings 64 allow the second component to flow from the outer bag intopassage 154. - In these systems, the components can also be filled into the container through the valve assembly, by pressing the valve stem down and injecting the components through the
openings -
US 3 825 159 upon which the preamble of independent claims 1 and 10 is based discloses a pressurized multi-component dispensing system having an outer body, an inner container, a dispensing head and a valve system for controlling the flow of the components from the container. - The invention features pressurized dispensing systems for dispensing multi-component products according to independent claims 1 and 10. Further embodiments are subject of the dependent claims.
- The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features and advantages of the invention will be apparent from the description and drawings, and from the claims.
-
FIG. 1 is a cross-sectional view of a valve used in a prior art dispensing system. -
FIG. 2 is a side plan view of a valve according to one embodiment of the invention in place in the neck of a container.FIG. 2A is a cross-sectional view of the valve, taken along line A-A inFIG. 2 .FIG. 2B is an exploded perspective view showing the components of the valve. -
FIG. 3 is a perspective view of the valve ofFIG. 2 , taken from below. -
FIG. 4 is a cross-sectional view of a dispensing system including the valve ofFIG. 2 ;FIG. 4A is an enlarged detail view of area A ofFIG. 4 with the valve in an open position;FIG. 4B is an enlarged detail view of area A ofFIG. 4 with the valve in a closed position. -
FIG. 5 is a cross-sectional view of a valve according to an alternative embodiment of the invention. -
FIG. 6 is an enlarged cross-sectional view of a spring seat used in the valve ofFIG.. 2 . - Referring again to
FIG. 1 , the inventor has found that theflat gasket seal 82 in the prior art valve assembly may allow "cross-over" between the two components, i.e., one component may enter the chamber that is reserved for the other component, especially when the components are being filled into the container through the valve. This cross-over effect is generally the result of theseal 82 bending or otherwise distorting during filling. As a result, cross-over may be exacerbated by high filling pressures and by the location ofopenings 64 adjacent toseal 82. Bending ofseal 82 may also occur during dispensing, which may cause the two components to exit the valve at different times. - In the
valve assembly 98 shown inFIG. 2 ,seal 82 is replaced by a moldedsealing member 100 that is dimensioned to be press-fitted into the valve body.Sealing member 100 includes anupper portion 102, dimensioned to sealingly seat against ashoulder 106 ofvalve body 108.Upper portion 102 also seals against the valve stem.Sealing member 100 also includes a smaller diameterlower portion 104, which engages the inner wall of the valve body below theshoulder 106. Thelower portion 104 has an inner diameter that is greater than that of the upper portion, so that the inner wall oflower portion 104 is spaced from and does not seal against thevalve stem 105. Thus, the sealing member contacts the inner wall of the valve body over a length sufficient to prevent the sealing member from bending, deforming or being dislodged, while allowing the valve to open without excessive axial movement of the valve stem. Preferably, the surface area of the portion of the sealing member that contacts the inner wall is at least about 0.419 cm2 (0.065 in2), more preferably at least about 0.903 cm2(0.140 in2). - The geometry of sealing
member 100 prevents bending or other distortion of the sealing member, ensuring a secure seal even when the seal is subjected to a load, e.g., during filling of the container. The stability of the sealing member generally prevents cross-over and ensures that the two components will begin dispensing simultaneously each time the valve is opened. - Additionally,
openings 64 of the prior art valve have been replaced byopenings 110, which are spaced from upper portion 102 a sufficient distance to minimize (and preferably to eliminate) the potential for a cross-over path between thesealing member 100 and theopenings 110. Thus, even if the sealing member were to distort under pressure, it would be unlikely that cross-over would occur. Preferably,openings 110 are at least 0.134 cm (0.055 inch) from theupper surface 112 ofsealing member 100, more preferably at least 0.279 cm (0.110 inch). - Advantageously, the
openings 110 in the valve body and theopenings 114 in the valve stem are large, preferably as large as can be accommodated by the design constraints of the valve body and valve stem. Importantly, not only are the openings large, they are also unobstructed, so that the effective area through which flow can occur is substantially equal to (within 5% of) the actual area of the openings. The large valve openings allow a high flow rate into the nozzle during filling of the dispensing system, and minimize shear on the first and second components during filling and dispensing. Preferably, the total area ofopenings 110 is at least about 0.026 cm2 (0.004 in2), more preferably at least about 0.103 cm2 (0.016 in2), and the total area ofopenings 114 is at least about 0.006 cm2 (0.001 in2), more preferably at least about 0.013 cm2 (0.002 in2). These areas are the theoretical design measurements; the actual areas of the openings are subject to tolerances and distortion of the valve during installation into the container. The area of the openings is selected to allow the two components to be delivered into the container through the valve during a high-speed manufacturing process. It is desirable to fill through the valve because doing so facilitates high-speed in-line processing. The large size of the openings also tends to reduce the filling pressure and thereby minimize shear on the composition during filling. Moreover, the larger the openings, the less influence the valve design will have on the ratio of the two components delivered during dispensing. As a result, the large openings allow fine adjustments to the ratio to be made by adjusting the design of the actuator. As a result, in some cases the same valve design can be used for a variety of products having different rheologies, with adjustments being made, to compensate for rheology, by changing the actuator design. - The use of a female valve stem allows design room to provide these relatively large openings. Using a female valve stem also allows the flow rate of the components out of the container to be finely controlled by the actuator, rather than by the valve. It is generally easier to accurately control the flow at the last point of exit (the actuator), rather than at the valve openings.
- Preferably, the valve stem is a single, unitary part, for ease of manufacturing and economy. It is also generally preferred that the lower end of the valve stem have an outer diameter that equal to or slightly greater than the inner diameter of the sealing member, so that the valve can be easily assembled by press fitting the valve stem into the valve body.
- Referring to
FIGS. 2A and2B , in thenew design spring 72 is supported by aspring seat 101.Spring seat 101, shown in detail inFIG. 6 , includes anaperture 103 that has an inner diameter ID that is only slightly larger, e.g., 5 to 20 % larger, than the outer diameter of the valve stem. As a result, the spring seat inhibits radial movement and bending of the valve stem. Reducing the radial movement and bending of the valve stem will tend to improve the efficiency of the valve and make it more robust. - Still referring to
FIG. 2 , in the finished product thevalve assembly 98 is crimped onto avalve cup 13. Referring toFIG 5 , anouter bag 200 and aninner bag 202 are attached to the lower end of the valve assembly, as will be discussed below, and a dispensinghead 50 is mounted over thevalve cup 13.Dispensing head 50 includes an actuator 52 that may be depressed by a user to actuatevalve assembly 98.Dispensing head 50 defines afirst channel 54, for flow of the first component, and a coaxially disposedsecond channel 56, for flow of the second component.Channels nozzle 58, through which the product is dispensed. - Referring to
FIGS. 2-2B and3 , it is generally preferred that the valve assembly include askirt 204 mounted on the outer surface of thevalve body 108.Skirt 204 includes a generally cylindrical or dome-shapedmain portion 203 having anouter surface 206 configured to prevent the neck of theouter bag 200 from collapsing around the valve body (which could choke off flow to the openings 110). Preferably, theouter surface 206 is spaced from the outer wall ofvalve body 108 by at least about 0.343 cm (0.135 inch), and the skirt extends axially along the length of the valve body at least about 1.588 cm (0.625 inch) from the bottom of the valve body towards the valve cup. Theskirt 204 defines a pair ofchannels 207 that provide a fluid path to theopenings 110 even when theouter bag 200 collapses against theouter surface 206. It is generally preferred that the skirt extend to the top ofopenings 110. The entire skirt may extend to the top ofopenings 110, or the skirt may includeribs 205 that extend upwardly from themain portion 203, as shown. Includingribs 205, rather than extending themain portion 203 toopenings 110, will reduce the amount of plastic required to mold the valve body while still maintaining a flow path toopenings 110. Theribs 205 preferably extend radially outward from the valve body the same distance as theouter surface 206 where theribs 205 intersect withouter surface 206. At the centerline ofopenings 110, theribs 205 extend outwardly at least about 0.102 cm (0.040 inch). - Alternatively, instead of providing a
skirt 204 having a cylindrical main portion, thevalve body 108 may include only a pair of raisedribs 209, as shown inFIG. 5 . In this case, theribs 209 extend axially along thevalve body 108 over the same length covered by theskirt 204 discussed above. -
Skirt 204 also includes a threadedinner surface 208 configured to receive a corresponding threadedneck 209 of the inner bag 202 (FIG. 4A ). The threaded connection provides a positive compression on bag gasket 201 (FIGS. 4A and4B ) and prevents the component inouter bag 200 from being sucked intoinner bag 202. Without the threaded connection, this may tend to occur if there is a pressure differential between the inner and outer bags when the outer bag is filled. The threaded connection also provides a tortuous path from thebag gasket 201 to theinner bag 202, and thus inhibits flow of material into the inner bag even if the seal provided bybag gasket 201 is broken. The threaded connection is particularly advantageous when the two components react with each other, and thus cross-over must be minimized or eliminated altogether. In products that can tolerate some cross-over, the threaded connection can often be omitted, if desired. For example, the valve may include a snap-on connection rather than a threaded connection, as shown inFIG. 5 . - It may be preferred to use a bag-in-bag arrangement such as that shown in
FIG. 4 , in which alower portion 210 of theouter bag 200 is contoured to match the contour of theinner bag 202. In particular, thelower portion 210 tapers inwardly in the same manner as the corresponding lower portion of the inner bag, so that the walls of the two bags are generally parallel in this area. This configuration tends to prevent material from getting trapped on the bottom of the outer bag, which reduces residue and allows more product to be delivered to the consumer rather than wasted. Because less material is trapped in the bottom of the outer bag, the ratio of the two components generally remains constant as the contents of the container are dispensed. This bag-in-bag arrangement is discussed inUS 2006/012 4663 .
Claims (12)
- A pressurized dispensing system for dispensing a multi-component product, comprising:an outer body defining a first chamber constructed to contain a first component of said product;an inner container, disposed within said body, defining a second chamber constructed to contain a second component of said product and maintain said second component separate from said first component;a dispensing head (50) in fluid communication with said first and second chambers, through which the product is dispensed; anda valve assembly (98), including a valve stem (105) constructed to move between a closed position, in which said first and second chambers are sealed, and an open position, in which said first and second components flow simultaneously from said first and second chambers to said dispensing head, a valve body (108) surrounding at least a portion of the valve stem, and a sealing member (100) constructed to provide a seal between the valve stem and an inner wall of the valve body, the sealing member including two portions (102, 104) having different outer diameters, characterised in that the sealing member includes an upper portion (102) that seals against the valve stem, and a lower portion (104) that does not seal against the valve stem, and both the upper and lower portions seal against the valve body.
- The dispensing system of claim 1, wherein the sealing member is constructed to be press fitted into the valve body.
- The dispensing system of claim 1, wherein the valve body includes a plurality of upper openings and the valve stem includes a plurality of lower openings.
- The dispensing system of claim 3, wherein the sealing member is positioned to seal the lower openings when the valve is in its closed position.
- The dispensing system of claim 1, wherein the valve stem is a female valve stem.
- The dispensing system of claim 4, wherein the sealing member is spaced from the upper openings.
- The dispensing system of claim 6, wherein an upper surface of the sealing member is at least 0·1397 cm (0.055 inch) below the center of the lowest of the upper openings.
- The dispensing system of claim 3, wherein the upper openings have an unobstructed open area of at least 0·0258 cm2 (0.004 in2) and the lower openings have an unobstructed open area of at leas 0·0065 cm2 (0.001 in2)
- The dispensing system of claim 1, further comprising a spring seat configured to provide radial support to the valve stem.
- A pressurized dispensing system for dispensing a multi-component product, comprising:an outer body defining a first chamber constructed to contain a first component of said product;an inner container, disposed within said body, defining a second chamber constructed to contain a second component of said product and maintain said second component separate from said first component;a dispensing head (50), in fluid communication with said first and second chambers, through which the product is dispensed; anda valve assembly (98), including a valve stem (105) constructed to move between a closed position, in which said first and second chambers are sealed, and an open position, in which said first and second components flow simultaneously from said first and second chambers to said dispensing head, a valve body (108) surrounding at least a portion of the valve stem and comprising a shoulder (106), and a sealing member (100) constructed to provide a seal between the valve stem and an inner wall of the valve body, the sealing member including an upper portion (102) dimensioned to sealingly seat against the shoulder (106) and the valve stem characterized in that a lower portion seals against an inner wall of the valve body below the shoulder.
- The dispensing system of claim 10, wherein the portion that seals against the inner wall of the valve body has a surface area of at leas 0·4194 cm2 (0.065 in2)
- The dispensing system of claim 11, wherein the portion that seals against the inner wall of the valve body has a surface area of at least 0·9037 cm2 (0.140 in2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05853133T PL1836105T3 (en) | 2004-12-15 | 2005-12-07 | Dispensing multi-component products |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/012,560 US20060124671A1 (en) | 2004-12-15 | 2004-12-15 | Dispensing multi-component products |
PCT/US2005/044124 WO2006065585A2 (en) | 2004-12-15 | 2005-12-07 | Dispensing multi-component products |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1836105A2 EP1836105A2 (en) | 2007-09-26 |
EP1836105B1 true EP1836105B1 (en) | 2013-05-15 |
Family
ID=36123231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05853133.6A Active EP1836105B1 (en) | 2004-12-15 | 2005-12-07 | Dispensing multi-component products |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060124671A1 (en) |
EP (1) | EP1836105B1 (en) |
CA (1) | CA2589074C (en) |
PL (1) | PL1836105T3 (en) |
WO (1) | WO2006065585A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160377186A1 (en) * | 2015-06-25 | 2016-12-29 | The Gillette Company | Compressible valve and actuator for a pressurized container |
US10174884B2 (en) * | 2015-06-25 | 2019-01-08 | The Gillette Company Llc | Valve stem for a compressible valve |
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-
2004
- 2004-12-15 US US11/012,560 patent/US20060124671A1/en not_active Abandoned
-
2005
- 2005-12-07 PL PL05853133T patent/PL1836105T3/en unknown
- 2005-12-07 EP EP05853133.6A patent/EP1836105B1/en active Active
- 2005-12-07 WO PCT/US2005/044124 patent/WO2006065585A2/en active Application Filing
- 2005-12-07 CA CA2589074A patent/CA2589074C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2006065585A2 (en) | 2006-06-22 |
CA2589074A1 (en) | 2006-06-22 |
EP1836105A2 (en) | 2007-09-26 |
PL1836105T3 (en) | 2013-10-31 |
US20060124671A1 (en) | 2006-06-15 |
WO2006065585A3 (en) | 2006-10-12 |
CA2589074C (en) | 2011-08-02 |
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