Container for retaining liquids and valve for use in the same
A container for retaining liquids includes a straw assembly that permanently lies partially within an interior cavity of the container and partially outside the container. The straw assembly includes an elongated tubular member which is slidably received in a valve. A first end of the tubular member lies outside the container and is covered by a tear-away strip to protect it from contamination and damage. A second end of the tubular member lies within the cavity and is selectively engeagable with the valve to either prevent liquid from being withdrawn from the container or allow liquid to be withdrawn from the container through the tubular member.
This application is a non-provisional application claiming priority from U.S. Provisional Application No. 60/519,983, filed Nov. 14, 2003 and U.S. Provisional Application No. 60/598,557, filed Aug. 3, 2004, the entire specifications of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION1. Technical Field
This invention generally relates to containers for retaining liquids. More particularly, the invention relates to containers for retaining liquids, the contents of which are accessed by piercing the outer surface of the container with a straw. Specifically, the invention relates to a flexible pouch that includes a straw which extends through the wall of the pouch and is partially retained within the cavity of the pouch from the manufacturing stage through to the point the consumer wishes to access the contents of the pouch.
2. Background Information
A variety of containers have been utilized for retaining liquids such as milk or fruit juices. These containers have included plastic and glass bottles, boxes with impermeable liners and flexible plastic pouches. Both the boxes and the pouches have been sold with straws, wrapped in plastic sleeves and secured to the outside surface of the container by a small quantity of adhesive. One end of the straw is typically slightly pointed. The box or pouch is typically provided with a weakened area through which the pointed end of the straw is pushed. When the consumer wishes to drink the contents of the box or pouch, the straw is removed from its plastic sleeve, the pointed end of the straw is used to puncture the weakened area on the box or pouch and the straw is then pushed partially into the liquid within the container.
One of the problems with these previously provided containers is that the plastic sleeves holding the straws may become detached from the box or pouch. The loss of the straw makes it difficult for the consumer to access the contents of the container. Additionally, the boxes previously provided are reasonably expensive to manufacture and take up a lot of room during shipping and on displays in the stores. There has recently been a shift in the industry to utilize pouches instead of boxes for holding drinks of various kinds. This shift is based on the fact that the pouches are cheaper to manufacture, more pouches than boxes can be packaged into the same size shipping container and there is less material to ultimately dispose of. These factors result in reduced transportation costs, reduced areas for shipping, storage and display space relative to box-packaged products.
The pouches that are presently known in the art are typically manufactured from either a foil type material or any of a number of types of plastics. One of the problems experienced with the presently known pouches is that when the consumer comes to insert the straw into the container, the flexibility of the pouch and the fluid nature of the contents make it difficult to puncture the outer wall of the pouch with the straw. In order to successfully puncture the pouch, the consumer may apply too much force and push the straw completely through the pouch, thereby causing the contents to spill out of the pouch in two directions or juice may squirt out of the straw as soon as the pouch is punctured.
A further problem with the pouch-type drink containers of the prior art is that once they have been opened, the entire contents of the container have to be consumed. There is no provision in the prior art for being able to reseal the container after partial consumption of the contents thereof.
There is therefore a need in the art to provide an improved mechanism for accessing the liquid contents contained within flexible pouch type containers and for closing the container for later consumption of the contents thereof.
SUMMARY OF THE INVENTIONThe liquid container of the present invention is a container having a straw which extends through an aperture in the outer wall thereof. The straw is retained so that it lies partially within the cavity and partially out of the container. A selectively removable tear-away strip protects the free end of the straw from damage and contamination from the time of manufacture until consumption of the contents of the pouch. Preferably, the end of the straw lying within the cavity is connected to a valve which is set in a first position where the straw is blocked and the valve and straw are movable relative to each other to a second position where the straw is open and liquid is able to flow through the straw. If the consumer decides that they wish to consume only a portion of the liquid in the pouch, the valve can be engaged and reset to the first position so that liquid is again prevented from flowing through the straw. The valve preferably includes a base with a centrally located plug extending outwardly therefrom. The base includes a mechanism for preventing the straw from being entirely withdrawn therefrom and for limiting the range of movement of the straw within the valve.
BRIEF DESCRIPTION OF THE DRAWINGSThe preferred embodiment of the invention, illustrative of the best mode in which applicant has contemplated applying the principles, are set forth in the following description and are shown in the drawings and are particularly and distinctly pointed out and set forth in the appended claims.
Referring to
Pouch 10 preferably is manufactured from at least one sheet of any suitable plastic or foil-type material that is heat sealed together, joined by an adhesive or connected together in any other suitable manner to form a hollow container. A suitable material for manufacturing pouch 10 is a polyolefin film such as the film manufactured and sold by DuPont Canada Inc. under the trademarks ENHANCE and MINI-SIP. The material of pouch 10 may be transparent or opaque. Pouch 10 has a first wall 24 and second wall 26 that are joined together along edges 28, 30, 32, and 34. Straw 18 extends through an aperture 40 in first wall 24. The material from which pouch 10 is manufactured substantially seals first wall 24 around straw 18 and substantially prevents liquid 14 from seeping out of aperture 40, even when external pressure is applied to pouch 10.
Tear-away strip 22 preferably extends from edge 32 to edge 34 of pouch 10 and lies substantially parallel to edges 28 and 30. Strip 22 completely covers that part of straw assembly 16 which extends out of pouch 10. Tear-away strip 22 is provided for sanitary reasons to prevent straw 18 from becoming contaminated or from being ripped out of pouch 10 during handling prior to use by the consumer. Tear-away strip 22 preferably is transparent and is heat sealed to the exterior surface of first wall 24. Strip 22 is also provided with a mechanism for accessing straw 18. This mechanism may take the form of a row of perforations 23 through which straw 18 may be pushed or may alternatively comprise a string (not shown) which can be pulled upwardly to cut through strip 22. Any other suitable mechanism for accessing straw could also be used without departing from the spirit of the present invention. It is preferred that strip 22 remain permanently attached to pouch 10 to reduce littering of the environment, but it should be understood that strip 22 could be completely removed from pouch 10. Furthermore, tear-away strip 22 may be used as a label for pouch 10 and can include product information thereon.
Straw assembly 16 comprises an elongated tubular straw 18 which is slidably received within valve 20. Straw 18 is a commonly known drinking straw made of a thermoplastic material such as polypropylene. Straw 18 has a first end 36 and a second end 38 with a shaft 18a disposed therebetween. Shaft 18a of straw 18 extends partially through aperture 40 in first wall 24 of pouch 10 so that first end 36 of straw 18 lies outside cavity 12 and second end 38 of straw 18 lies inside cavity 12.
In accordance with the present invention, a preferred embodiment of valve 20 is shown in
It can be seen from
Pouch 10 is assembled in the following manner. Valve 20 is assembled around second end 38 of straw 18 during manufacture. In order to accomplish this, straw 18 is rotated at a rate of between 800 rpm and 2800 rpm and is pushed onto plug 44 when plug 44 is in the position shown in
When straw 18 is secured within valve 20 to form straw assembly 16 as is described above, valve 20 is in the first position (
Referring to
If the consumer has had sufficient to drink and they have not yet finished all the liquid 14 within pouch 10, straw 18 can be closed yet again so that liquid 14 does not accidentally flow out of pouch. This is accomplished in the following manner. The consumer pushes the straw 18 downwardly in the direction of arrow “C” (
A second embodiment of the valve of the present invention is shown in
Referring to
In order to assemble valve 120, straw 118 is rotated at between 800 rpm and 2800 rpm and is inserted into second aperture 174 of housing 170. Substantially simultaneously, stud 171 is inserted into first aperture 173. When end 138 of straw 118 engages third section 144c of plug 144, tip 184 of straw 118 slides easily thereover because of the bevel. Straw 118 becomes heated as it frictionally engages plug 144. Straw 118 stretches slightly as it slides over first section 144a of plug 144 and then expands as it slides over second section 144b. Second end 138 of straw becomes molded into the exterior size and shape of second section 144b of plug 144. A shoulder 185 (
Referring to
A third embodiment of valve is shown in
A fourth embodiment of valve is shown in
It will be understood that while the container described in the preferred embodiment of the invention is a flexible, plastic pouch, the straw assembly could be utilized in a box-type container. It will further be understood that while the above invention has been described as being useful as a container for drinkable liquids, the flexible pouch could also be used for liquids such as motor oil. In this instance, a first quantity of motor oil could be dispensed from the pouch through the tubular member by squeezing the pouch, the tubular member could be engaged with the valve when sufficient oil has been dispensed and could be disengaged from the valve at a later time when a second quantity of oil is to be dispensed.
In the foregoing description, certain terms have been used for brevity, clearness, and understanding. No unnecessary limitations are to be implied therefrom beyond the requirement of the prior art because such terms are used for descriptive purposes and are intended to be broadly construed.
Moreover, the description and illustration of the invention is an example and the invention is not limited to the exact details shown or described.
Claims
1. A container for retaining liquids comprising:
- a body having a first wall and a second wall and defining an interior cavity therebetween, the body being adapted to hold a quantity of liquid within the interior cavity; and wherein the first wall has an aperture formed therethrough;
- an elongated tubular member received through the aperture in the first wall, such that a first part of the tubular member lies within the cavity of the body and a second part of the tubular member lies outside the body; and
- a valve engaged with the first part of the tubular member; whereby said valve is set at a first position where liquid is prevented from flowing through the tubular member; and whereby the valve and tubular member are movable relative to each other to a second position where liquid can flow through the tubular member.
2. The container as set out in claim 1, wherein the body is a pouch manufactured from a flexible material.
3. The container as set out in claim 2, wherein the valve is free-floating within the interior cavity of the pouch.
4. The container as set out in claim 3, wherein the valve has a width and the aperture has a diameter and the width of the valve is greater than the diameter of the aperture; whereby the valve cannot be withdrawn from the cavity of the pouch through the aperture.
5. The container as set out in claim 4, wherein the tubular member is slidably receivable within the valve.
6. The container as set out in claim 5, wherein the tubular member is removable from the valve.
7. The container as set out in claim 5, wherein the tubular member cannot be completely withdrawn from the valve.
8. The container as set out in claim 7, wherein the elongated tubular member has an axial bore and the valve includes a plug; and wherein the plug is selectively receivable within the bore; and wherein the plug and bore are substantially equal in diameter.
9. The container as set out in claim 8, wherein the valve further comprises:
- a base; and
- a stop disposed a spaced distance from the base; and wherein the plug extends outwardly from the base and toward the stop.
10. The container as set out in claim 9, wherein the stop further defines an aperture through which the tubular member is received; and a first end of the tubular member is movable between the base and the stop of the valve.
11. The container as set out in claim 10, wherein the plug includes a first section of greater diameter disposed proximate the base and includes a tapered tip disposed remote from the base; and wherein the first end of the tubular member is receivable over the first section of the plug and is deformed thereby.
12. The container as set out in claim 11, wherein the first end of the tubular member is permanently deformed to be complementary in size and shape to the first section of the plug.
13. The container as set out in claim 12, wherein the first end of the tubular member includes an outer edge and an annular shoulder disposed a spaced distance therefrom; and wherein the shoulder is greater in diameter than the aperture in the stop of the valve.
14. The container as set out in claim 13, wherein the base includes:
- a pair of arms extending outwardly from the base in opposing directions; each arm terminating in an end member;
- a hinge section disposed between each arm and the base, the arms being foldable about the respective hinge section; whereby the arms lie substantially on either side of the plug.
15. The container as set out in claim 14, wherein the end members of the arms are connectable to form the stop of the valve.
16. The container as set out in claim 15, wherein the end members of the two arms include complementary sized and shaped sections which allow the end members to interlock with each other.
17. The container as set out in claim 16, wherein the end members each include arcuate surfaces which form the aperture in the stop when the end members are connected together.
18. The container as set out in claim 13, wherein valve comprises a first member and a second member; and wherein the first member includes the base and the plug and the second member includes the stop and aperture; and wherein the first and second members are complementary sized and shaped to interlock with each other.
19. The container as set out in claim 9, wherein the plug has a tip disposed remote from the base of the valve; and the valve has an outermost edge; and the wherein the plug further comprises a boss which extends outwardly from the tip of the plug beyond the outermost edge of the valve.
20. The container as set out in claim 19, wherein the boss extends outwardly from the center of the tip.
21. The container as set out in claim 20, wherein the boss extends outwardly from the tip proximate a side edge thereof.
22. The container as set out in claim 1, wherein the valve is selectively movable between the first position and the second position.
23. The container as set out in claim 2, where the pouch is formed from a material selected from the group consisting of plastics, foils and polyolefin films.
24. The container as set out in claim 1, further comprising a tear-away strip adhesively secured to an exterior surface of the first wall of the body, said tear-away strip being disposed over the second part of the straw assembly.
25. The container as set out in claim 24, wherein the tear-away strip includes a plurality of perforations therein.
26. The container as set out in claim 1, wherein the valve comprises a sleeve which completely surrounds the second end of the tubular member thereby preventing liquid from flowing into the tubular member.
27. A method of manufacturing a container for retaining liquids comprising:
- providing a valve including a base with a plug extending outwardly therefrom;
- providing an elongated tubular member having a bore therethrough;
- rotating the tubular member;
- pushing a first end of the rotating tubular member into contact with the plug, whereby the plug enters the bore of the rotating tubular member and the rotating tubular member heats up through frictional contact with the plug;
- stopping the rotation of the tubular member;
- pushing a second end of the tubular member through an aperture in a sheet of plastic film;
- forming a pouch from the sheet of plastic film, whereby the valve and first end of the tubular member are enclosed within an interior cavity of the pouch;
- filling the pouch with a liquid;
- sealing the pouch.
28. The method of manufacturing a container as set out in claim 27, wherein the tubular member is rotated at a speed of between 800 rpm and 2800 rpm.
29. The method of manufacturing a container as set out in claim 28, wherein the valve further includes a pair of arms extending outwardly in opposing directions from the base, each arm including an end member; and wherein the valve further includes a hinge area disposed between each arm and the base; and wherein the method of manufacture further comprises the step of:
- rotating the arms upwardly and inwardly through 90 degrees toward the plug on the base.
30. The method of manufacture as set out in claim 29, wherein the step of rotating the arms occurs simultaneously with the step of pushing the rotating tubular member onto the plug.
31. The method of manufacture as set out in claim 30, further comprising the step of:
- ultrasonic welding the end members of the arms together about the tubular member to form a stop.
32. The method of manufacture as set out in claim 31, wherein the valve further includes a housing having a tapered internal cavity and an aperture with an annular stop; and wherein the method of manufacture further includes the step of:
- inserting the tubular member through the aperture in the housing;
- snap fitting the housing together with the base, whereby the plug extends inwardly into the internal cavity of the housing and toward the annular stop; and wherein the tubular member is received on the plug.
Type: Application
Filed: Nov 12, 2004
Publication Date: May 19, 2005
Applicant: Food Distribution Systems, Inc. (Mayfield Heights, OH)
Inventors: James Weber (Sheffield Lake, OH), Homer Lynn (Dublin, OH), Joseph LoConti (Mayfield Village, OH)
Application Number: 10/988,163