DISPENSING SYSTEM FOR DISPENSING FLOWABLE MATERIALS, FLEXIBLE BAG OR POUCH FOR USE IN DISPENSING SYSTEM, AND METHODS OF FILLING DISPENSING BOTTLES AND DISPENSING FLOWABLE MATERIALS THEREFROM

Abstract

A dispensing system, a flexible bag or pouch for use therewith, and methods for filling a dispensing bottle with a flowable product and dispensing the same are disclosed. The system includes a flexible bag and a dispensing bottle. The flowable product is located in the bag. The bag includes a first end and a second end. The bottle includes an interior chamber, a squeezable sidewall surrounding the chamber and a bottom cap including a dispensing valve. The bag is disposed in the chamber with the second end opened to form an open mouth, whereupon the flowable product is in communication with the dispensing valve. Squeezing of the bottle's sidewall applies pressure to the flowable product to cause it to be dispensed out of the bottle through dispensing valve.

Claims

1. A system for dispensing a flowable product comprising: a flexible bag or pouch having a body formed of a flexible material and bounding an interior space in which a flowable product is located, said flexible bag or pouch including a first end and a second end; and a bottle comprising a hollow container having a top end portion, a bottom end portion and a sidewall interposed therebetween and bounding an interior chamber, said bottom end portion of said bottle comprising a bottom cap releasably securable to said sidewall of said bottle and including a dispensing valve, said flexible bag or pouch being received within said interior chamber with said second end being opened to form an open mouth of the bag or pouch such that said flowable product is in communication with said dispensing valve via said mouth, whereupon squeezing of said sidewall of said bottle applies pressure to said flowable product within said flexible bag or pouch to cause said flowable product to be dispensed out of said bottle through said dispensing valve.

2. The system of claim 1 wherein said second end of said flexible bag or pouch comprises a peelable seal configured to peeled open to form said open mouth.

3. The system of claim 1 wherein portions of said flexible bag or pouch contiguous with said open mouth are configured to be interposed and held between said bottom cap and said sidewall of said bottle.

4. The system of claim 1 wherein said dispensing valve comprises a one-way valve.

5. The system of claim 1 wherein said top end portion of said bottle comprises a one-way top valve configured to enable ambient air to enter through said one-way top valve to said interior chamber when the squeezing of said bottle is released to thereby fill the space within said interior chamber created by the dispensing of said flowable product from said bottle.

6. The system of claim 5 wherein said top end portion of said bottle comprises a top cap releasably securable to said sidewall, said top cap including said one-way top valve.

7. The system of claim 2 wherein portions of said flexible bag or pouch contiguous with said open mouth are configured to be interposed and held between said bottom cap and said sidewall of said bottle.

8. The system of claim 7 wherein said top end portion of said bottle comprises a one-way top valve configured to enable ambient air to enter through said one-way top valve to said interior chamber when the squeezing of said bottle is released to thereby fill the space within said interior chamber created by the dispensing of said flowable product from said bottle.

9. The system of claim 8 wherein said top end portion of said bottle comprises a top cap releasably securable to said sidewall, said top cap including said one-way top valve.

10. A flexible bag or pouch for use in a dispensing bottle for dispensing a flowable material, the bottle comprising a hollow container having a top end portion, a bottom end portion and a sidewall interposed therebetween and bounding an interior chamber, the bottom end portion comprising a bottom cap releasably securable to the sidewall and including a dispensing valve, said flexible bag or pouch comprising: a body formed of a flexible material and bounding an interior space in which a flowable product is located, said body being configured for location within the interior chamber of the dispensing bottle, said body having a first end and a second end, said second end being openable, whereupon said flexible bag or pouch can be disposed within the interior chamber of the dispensing bottle with said second end being opened to form an open mouth such that said flowable product is in communication with the bottom valve via said open mouth and with portions of said body contiguous with said open mouth being configured to be tightly sandwiched between the bottom cap and the sidewall of the bottle, whereupon squeezing of the sidewall of the bottle applies pressure to said flowable product within said flexible bag or pouch to cause said flowable product to be dispensed out of the bottle through the dispensing valve.

11. The flexible pouch of claim 10 wherein said second end of said flexible bag or pouch comprises a peelable seal which is configured to be peeled open to form said open mouth.

12. A method of filling a dispensing bottle with a flowable material comprising: providing a flexible pouch comprising a body formed of a flexible material and bounding an interior space in which a flowable product is located, said flexible pouch having a first end and a second end; providing a dispensing bottle comprising a hollow container having a top end portion, a bottom end portion and a sidewall interposed between said top end portion and said bottom end portion and bounding an interior chamber, said sidewall being configured to be collapsed by squeezing said sidewall; introducing said flexible bag or pouch into said interior chamber through said bottom end portion of said bottle whereupon said first end of said flexible bag or pouch is located adjacent said top portion of said bottle and said second end of said flexible bag or pouch is located adjacent said bottom portion of said bottle; providing a bottom cap that is releasably securable to said sidewall of said bottle, said bottom cap including a dispensing valve opening said second end of said flexible bag or pouch to form an open mouth of said flexible bag or pouch; interposing portions of said bag or pouch contiguous with said open mouth between said bottom cap and said sidewall of said bottle; and releasably securing a bottom cap to said sidewall of said bottle so that said interposed portions of said open mouth are tightly sandwiched between said bottom cap and said sidewall and said flowable product is in communication with said dispensing valve.

13. The method of claim 12 additionally comprising: squeezing said sidewall of said flexible pouch to apply pressure to said flowable product within said flexible bag or pouch to cause said flowable product be dispensed through said dispensing valve.

14. The method of claim 13 additionally comprising removing said bottom cap from said bottle after said flowable product has been dispensed from said bottle and grasping portions of the flexible bag or pouch contiguous with said mouth to remove said flexible bag or pouch from said interior chamber.

15. The method of claim 12 wherein second end of said flexible bag or pouch comprises a peelable seal and wherein opening said second end of said flexible bag or pouch is achieved by peeling said peelable seal open to form said open mouth.

16. The method of claim 12 wherein said bottle is oriented such that said lower end of said bottle is directed upward when said flexible bag or pouch is introduced into said interior chamber.

17. The method of claim 14 wherein: said bottle is oriented such that said lower end of said bottle is directed upward when said flexible bag or pouch is introduced into said interior chamber; and orienting said bottle such that said lower end of said bottle is directed generally downward when said sidewall of said bottle is squeezed to dispense the flowable product through said bottom valve.

18. The method of claim 13 wherein said top portion of said bottle includes a one-way valve, said one-way valve being configured to enable ambient air to enter through said one-way valve to said interior chamber when the squeezing of said bottle is released to thereby fill the space within said interior chamber created by the dispensing of said flowable product from said bottle.

19. The method of claim 12 wherein second end of said flexible bag or pouch comprises a peelable seal and wherein opening said second end of said flexible pouch is achieved by peeling said peelable seal open to form said mouth.

20. The method of claim 13 wherein second end of said flexible bag or pouch comprises a peelable seal and wherein opening said second end of said flexible pouch is achieved by peeling said peelable seal open to form said mouth.

Description

DESCRIPTION OF THE DRAWING

[0019] FIG. 1 is an isometric view of one exemplary dispensing system constructed in accordance with this invention, that system basically comprising a dispensing bottle and a flexible bag or pouch holding a flowable product for disposition within the dispensing bottle so that the flowable material can be dispensed from the bag or pouch by squeezing the bottle;

[0020] FIG. 2 is a slightly enlarged top plan view of the flexible bag or pouch forming a portion of the system shown in FIG. 1;

[0021] FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG. 2;

[0022] FIG. 4 is an enlarged vertical sectional view of the dispensing bottle taken along line 4-4 of FIG. 1;

[0023] FIG. 5 is a vertical sectional view, like that of FIG. 4, but showing the dispensing bottle after the flexible bag or pouch has be disposed therein such that the system is ready to dispense the flowable product from the flexible bag or pouch;

[0024] FIG. 6 is a vertical sectional view, like that of FIG. 5, but showing the dispensing system during the process of dispensing the flowable product by squeezing the bottle to force the flowable product in the pouch through a dispensing valve forming a portion of the bottle; and

[0025] FIG. 7 is a vertical sectional view, like that of FIG. 6, but showing the dispensing system after the bottle has been released, e.g., un-squeezed, so that air can enter into the bottle via another one-way air valve to replace the volume of product dispensed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0026] Referring now to the various figures of the drawing wherein like reference characters refer to like parts, there is shown at 20 in FIG. 1 one exemplary embodiment of a top fill/bottom dispense system constructed in accordance with this invention. The system 20 basically comprises a bottle 22 and a flexible bag or pouch 24. The bag or pouch 24 contains a flowable product P, such as a condiment, sauce, etc.

[0027] The bag or pouch is best seen in FIGS. 2 and 3 and is a thin, light-weight member formed from a sheet of flexible material. In the exemplary embodiment shown, the sheet of flexible material is rectangular in shape and comprises a front panel 24A and a back panel 24B. Each panel has a bottom edge 24C, a top edge 24D, a left side edge 24E and a right side edge 24F. The panels 24A and 24B are secured together along their edges 24C, 24D, 24E and 24F, to form hollow body in which the flowable product P is located. The sealing of the edges can be accomplished via various conventional means, e.g., thermal bonding, ultrasonic bonding, adhesive securement, etc. The bottom end, i.e., the portion of the panels 24A and 24B contiguous with the bottom edge 24C, forms an openable mouth of the bag or pouch. To that end, the material making up the mouth of the bag or pouch is in the form of a peelable seal, which can be formed by any suitable technique. For example, as best seen in FIG. 3, the inner surface of the sheet material or film making up the panels 24A and 24B may include a peelable coating 24G and 24H, respectively, thereon, or may include a composition that enables the mouth to be welded closed, but which can be peeled apart to open the mouth by simple hand manipulation. Irrespective how the openable mouth is formed, it is configured so that when the portions of the bottom end 24C of the bag or pouch are pulled apart to break the peelable seal that action opens the mouth to provide access to the interior of the bag or pouch and hence to the flowable product P located therein.

[0028] In accordance with one exemplary aspect of this invention the bag or pouch is formed by folding a sheet of any suitable flexible material in half bringing the left and right edges together to form a tube, with the back of the sheet forming the inside of the tube. Energy is then applied to the left and right edges to weld them together. Once that has been accomplished energy is applied to a first end of the tube, thereby welding the edges at that first end together to form a tube with a closed end. The tube is then oriented so that the closed end is facing downward, whereupon the flowable product P is filled into the tube through the opposite end of the tube which is open at that time. After the tube is filled that open end is releasably, e.g., peelably, sealed to complete the formation of the bag or pouch 24, with the end of the bag or pouch which had been releasably sealed forming the heretofore described openable, e.g., peelable, mouth of the bag or pouch.

[0029] The bottle 22 is best seen in FIGS. 1 and 4 is in the form of an elongated tubular body having a cylindrical sidewall 22A that constitutes a body of revolution surrounding the central longitudinal axis of the bottle. The sidewall is formed of any suitable material, e.g., a plastic or some other material that is somewhat flexible, so that it can be flexed inward and collapsed somewhat by a user squeezing the sidewall, as will be described later. The sidewall bounds a hollow internal cavity 22B. The bottom end of the sidewall is in the form of a neck 22C that includes external threads 28 thereon. The top end of the bottle is in the form of a neck 22D that includes external threads 30 thereon. The bottle also includes a bottom cap 32 and a top cap 34. The bottom cap 32 serves as the dispensing cap for the bottle and includes a one-way, dispensing valve 36 located at the center of a circular end wall 38 of the cap. A peripheral sidewall 40 extends about the periphery of the end wall 38. The sidewall 40 includes internal threads 42 configured for threaded releasable securement to the external threads 28 at the neck at the bottom end 22C of the sidewall 22A. The end wall 38 includes three downwardly projecting feet 44A, 44B and 44cC. The feet serve to support the bottle in the upright state, i.e., with the top end portion 22C extending upward, when the bottle is stored.

[0030] As will be described in detail later when the bottle is loaded with the flexible bag or pouch 24 and the mouth of the flexible bag or pouch is opened, the flowable product will be located at the bottom of the interior 24B of the bottle and in communication with one-way dispensing valve 36.

[0031] The one-way dispensing valve 36 is constructed to enable the flowable product P to be ejected through it from the bag or pouch when the bag or pouch is located within the interior 22B of bottle and the sidewall 22A of the bottle is squeezed. The valve 36 can be of any suitable construction. In the exemplary embodiment shown it is in the form of an X-valve formed of a resilient material, e.g., silicone, rubber, etc., having a central hub from which a pair of circular flanges 36A and 36B project outward. The hub is rod-like and located within a central hole 28A in the circular end wall 38 of the bottom cap 32, with the flange 36A tightly engaging the outer surface of the wall 38 contiguous with the opening 38A, and with the flange 36B tightly engaging the inner surface of the wall 38 contiguous with the opening 38A. The valve 36 includes an X-shaped slit 36C (FIG. 1) extending through the hub from the outer surface of the flange 36A to the outer surface of the flange 36B. The outer diameter of the hub of the valve 36 is smaller than the inner diameter of the opening 38A so that when pressure is applied to the sidewall A of the bottle during the dispensing operation the X-shaped slit 36C will open and the hub of the valve will expand outward in the opening 38A, like shown in FIG. 6, whereupon the flowable product P will be ejected or dispensed out of the bottle. It should be noted that the one-way dispensing valve, need not be an X-valve, like just described, but can be of any suitable type, e.g., a duck-bill valve, etc.

[0032] The top cap 34 includes a circular end wall 48 about which a peripheral sidewall 50 extends. The sidewall 50 includes internal threads 52 configured for threaded releasable securement to the external threads 30 at the neck at the top end 22D of the sidewall 22A. The end wall 48 includes a one-way air-inlet check valve 46 located at the center of the end wall 48. In the exemplary embodiment shown the valve 46 is of the “umbrella” type. In particular the valve 46 is formed of a resilient material, e.g., silicone, rubber, etc., having a central hub 46A from which an umbrella-shaped (dome-shaped) flange 46B projects outward. The central hub 46 is disposed within a central hole 48A in the circular end wall 48 of the top cap 34 so that the outer peripheral edge of the dome-shaped flange 46B engages the undersurface of the end wall 48, as shown in FIGS. 4-6. The end wall 48 of the cap includes plural apertures or vent holes 48B located radially outward from the central hole 48A, but within the perimeter of the outer periphery of the flange 46B. Thus, when the valve is in the state shown in FIGS. 4-6, i.e., its closed state, the vent holes 48B are isolated from the interior 22B of the bottle by the engagement of the peripheral edge of the flange 46B with the undersurface of the end wall 48.

[0033] The one-way valve 46 enables the contents of the bag or pouch to be in a vacuum state during the squeezing of the bottle so that the flowable product P is ejected or dispensed through the one-way valve 36 located in the lower cap 32 due to the internal pressure within the bag or pouch. When the bottle is released, i.e., the user stops squeezing its sidewall 22A, the internal pressure ceases so that no further flowable material is dispensed through the valve 36. In addition, the release of pressure on the sidewall of the bottle enables the air to enter the bottle via the one-way valve 46. That action neutralizes, i.e., fills, the space between the flexible bag or pouch 24 and the interior of the bottle as shown in FIG. 7. In addition, to providing that functionality, the one-way valve 46 acts as a check valve to prevents outside contaminates from entering the interior of the bottle during storage of the bottle.

[0034] It should be noted, that while the preferred embodiment of the valve 46 is an umbrella valve, that is merely exemplary. Thus, any other type of one-way valve can be used, e.g., a butterfly valve, a duck-bill valve, etc. It should also be pointed out that while the one-way valve 46 is preferably located in the top cap 34, that arrangement is not mandatory. Thus, the one-way valve 46 may be located at a suitable position on the sidewall of the bottle, where it is not likely to be obstructed. In fact the top end of the bottle need not include a releasably securable cap, but rather may include an end wall that is fixedly secured to the sidewall.

[0035] Use of the dispenser system 20 is as follows. The bottom cap 32 is removed from the bottle by unscrewing it and the bottle is inverted so that the neck at the now opened bottom end is facing upward. The bag or pouch is then introduced into the interior 22B of the bottle through the neck at the open end 22C so that the mouth 24C of the bag or pouch is located adjacent the open end 22C with the opposite end of the bag or pouch located adjacent the cap 34. The peelable mouth of the bag or pouch is then peeled open by hand by the user and the portions of the bag or pouch contiguous with the mouth are folded back (turned inside-out) over the outer surface of the neck at the now open end 22C of the bottle. The cap 32 is then screwed tightly in place onto the threads 40 at that neck of the bottle, with the portions of the mouth of the bag interposed between the cap and the neck of the bottle as shown in FIG. 5. The bottle with the bag or pouch in it is then inverted so that the dispensing valve 36 is facing downward and whereupon the flowable product will be in fluid communication with that valve. The system is now ready for use to dispense the flowable product P. In particular, when the sidewall of the bottle is squeezed, pressure is applied to the bag or pouch which in turn applies pressure to the product thus forcing it out through the valve 36 in the bottom cap. When pressure on the sidewall of the bottle is released, outside air enters the bottle via the valve 46 into the space between the bottle and the bag or pouch to refill the space with air making up for the volume of product that was dispensed. When the bag or pouch is empty, i.e., its entire contents P have been dispensed, the bottom cap is removed and the empty bag or pouch is removed from the bottle. The bottle and bottom cap remain clean as they have only contacted the bag or pouch and not the flowable product P. The bottom cap and its valve can then be cleaned and a new bag or pouch 24 inserted into the bottle 22 in the same manner as described above.

[0036] It must be pointed out at this juncture that the exemplary flexible bag or pouch as described above is merely one of various types of flexible packages that can be used in the system of this invention. Thus, other flexible packages, can be used so long as they include some openable mouth that can be folded back or turned inside out to fit between the bottle and a dispensing cap having some one-way valve, whereupon the flowable contents of the package are in fluid communication with the one way valve. Moreover, as stated earlier the bottle need not make use of a removable cap at the opposite end of the dispensing cap. Further still, the dispensing cap need not be threadedly releasably securable to the bottle, but can be securable by other releasable means, e.g., a bayonet fitting, some clamp mechanism, etc. Other changes and modifications to the structure and arrangement of the components making up the system of this invention and the method of dispensing a flowable product in accordance with this invention are also contemplated.

[0037] Without further elaboration the foregoing will so fully illustrate my invention that others may, by applying current or future knowledge, adopt the same for use under various conditions of service.