The present invention relates to a dispensing closure for a container with a spout or an opening for a dispensing fluid, especially for containers which are placed or stored upside down, such that the spout or opening of the container is, in use, at a lower side, or for containers which are lying essentially horizontally, with an opening or a spout at a side portion.
Such containers are frequently used for storing milk, juice, water or wine or other fluid or viscous products as e.g. soap detergents, fabric softeners etc., but can be used also for other fluids or liquids.
Such a closure is for example known from WO 2006/086835.
It is an object of the present invention to enhance such a closure as known in the prior art.
This problem is solved by a dispensing closure for a fluid container according to claim 1, claims 2 to 15 relate to specifically advantageous realization of such a dispensing closure. This problem is also solved by dispensing closure according to claim 16, while claims 17 and 18 relate to especially advantageous realizations of such a dispensing closure. Claim 19 refers to a system with a container and a dispensing closure.
According to the present invention, the dispensing closure comprises a peripheral wall, a transverse wall and a toggle member. The peripheral wall is adapted to at least partly fit within the spout and to seal against the spout of the container, when the closure is in its closed position and when the closure is attached to the container. The transverse wall extends inside of the peripheral wall, preferably for closing off the dispensing closure. The peripheral wall has preferably an essentially circular form, especially as the spouts and openings of containers, to which the dispensing closure shall be attached, also have a circular form. The toggle member extends from the transverse wall and is arranged to be manipulated by a user in order to bring the closure into its opened position and in order to enable a dispensing of a fluid or liquid stored into a container. The toggle member therefore extends from the transverse wall at a side being outside, in other words at a side being directed to the outside or to the atmosphere, not on a side which is directed to the inside of the container when the dispensing closure is attached to the container.
The peripheral wall and said transverse wall are made of an elastic material, preferably a flexible material which can be distorted when a force is exerted thereon and which then returns to its original form when the force is not exerted anymore. Preferred materials are for example thermoplastic elastomers or blends thereof, LD-PE, LLDPE etc.
According to the invention, the closure is arranged and adapted such that the closure is in its closed position when no force is exerted by user onto said toggle member and at least part of the transverse wall and at least part of the peripheral wall are distorted, when a force is exerted to said topic member by users, such that the seal between the peripheral wall and the spout of the container is partly opened to bring the closure in its opened position and to permit dispensing of fluid out of the container.
According to the invention, the dispensing closure further comprises a valve element. Said valve element is provided in said transverse wall and is arranged such that it is closed when said closure is in its closed position and such that it is at least partly open, when said closure is in its opened position, to permit flow of air into said container.
Such dispensing closures are especially useful in packages of the bag-in-box type, which comprise a flexible bag for reception of the fluid or viscous material, and a paperboard box or a box of another more rigid material for reception of a filled bag. When fluid is dispensed out of the container, in case of a bag-in-box type container, the flexible bag can shrink when the fluid is dispensed, while the dispensing of fluid is of course supported by gravity.
The dispensing of the liquid normally works well at the beginning, when the flexible bag in the bag-in-box type container is completely or still mainly filled, however, when the bag is more and more emptied, the bag will more and more collapse, which may lead to the effect that it is more difficult to dispense the liquid out of the bag, and there may be a remaining portion which cannot be dispensed at all.
The dispensing closure according to the present invention, however, provides a valve, which permits flow of air into said container, when said closure is in its opened position, so that these problems are remarkably reduced or even do not occur at all, and a better dispensing property can be provided, especially when the container is more empty, in order to also get the remaining fluid out of the container.
The dispensing closure according to the present invention, however, is also suitable for other containers, different from the bag-in-box type containers, especially for containers with rigid container walls, which, however may be used in a similar way as the bag-in-box containers, especially for containers which are placed upside down or which have the spout or opening at a downside part or at a side portion at a lower end and in which the spout or opening is placed such that, when the closure is opened, fluid is permitted to be dispensed under the influence of gravity without having to lift or move the container.
Without a dispensing closure as defined in the present invention, especially containing the valve element as defined, a dispensing of fluid of a container, e.g. with a solid wall, would not work properly or would even not be possible, and only by provision of the inventive valve element, air is permitted to flow into said container, filling the volume of the dispensed liquid, so that thereby a generation of a vacuum within the container, generated by a partial dispensing of fluid, is reduced or avoided, which would very soon remarkably deteriorate the dispensing property or even fully prevent a further dispensing of fluid.
The dispensing closure according to the present invention therefore not only remarkably enhances the dispensing properties of a dispensing closure of the prior art for bag-in-box type containers, but furthermore for the first time enable utilization of such closures in similar containers having a rigid container wall and therefore an essentially constant volume of the container, not being decreased by a dispensing of the fluid and a collapsing of the container by itself.
When the toggle is manipulated by a user to bring the closure from its closed position into its opened position, typically by pushing the toggle, the transverse wall and/or the peripheral wall, preferably both walls, are preferably distorted such that first a seal of the peripheral wall against the spout is at least partly opened to permit dispensing of the fluid out of the container. Only when further manipulating or pushing the toggle, the transverse wall and/or the peripheral wall are further distorted such that the valve is brought into its opened position to permit flow of air or atmosphere into said container.
This specific realization is especially advantageous as first the fluid is permitted to be dispensed out of the container, leading to an exact and desired dispensing and a certain decrease of pressure in a container, preferably with a rigid wall, by the exit of fluid out of the container, while thereafter the valve is at least partly opened, so that air can flow into said container and is preferably even sucked into the container by the decrease of pressure within the container, due to the exit of fluid out of the container.
Especially as air is permitted to flow into said container through the valve element, being separate from the opening through which fluid can be dispensed, an undisturbed dispensing and essentially laminar dispensing of fluid out of the container is achieved.
According to a preferred embodiment, said peripheral wall, said transverse wall and said toggle are made of the same material, while preferred materials are thermoplastic elastomers or blends thereof, LD-PE, LLDPE etc.
According to a further preferred realization said peripheral wall, said transverse wall and said toggle member are realized as a unitary element, which is preferably manufactured by injection molding. The injection molding could be a mono-injection molding or a hi-injection molding. Preferably the outer wall or the side wall is made out of hard resin, for example PP, HD-PE etc., and the parallel wall is made of a flexible resin, as referred to above.
In a preferred embodiment also the toggle is made of an elastic and preferably flexible material, but the toggle member is arranged such that it is more rigid than said peripheral wall and/or said transverse wall. This has the advantage that the toggle member gives a good haptic feeling to the user manipulating the toggle member, furthermore, by the more rigid realization of the toggle member, the desired deformation of the peripheral wall and/or the transverse wall can be exactly controlled and set. This enables a continuously exact controlling of the dispensing closure for the user.
According to a preferred embodiment of the dispensing closure, the peripheral wall comprises an external portion and an internal portion which together form a receiving space for accommodating the spout or parts of the spout of the fluid container when said dispensing closure is attached to said container.
This enables both an exact positioning of the dispensing closure on the spout of the container and also secures a tight and sealed connection to the container.
Further preferably said external portion of said peripheral wall comprises a dispensing opening, through which fluid can be dispensed, through the dispensing closure and out of the container.
Preferably said external portion of said peripheral wall comprises a sealing element adapted to seal against an outer part of the spout of the container, whereas this sealing element is adapted such that the seal is realized both when said dispensing closure is in its closed position and when said dispensing closure is in its opened position. Furthermore and further preferably said internal portion of said peripheral wall comprises a sealing element adapted to seal against an internal part of said spout of said container, wherein said sealing element is adapted such that it seals against the spout of the container when said dispensing closure is in its closed position and such that the seal is at least partly opened when said closure is in its opened position, wherein preferably the seal is opened in the vicinity of said dispensing opening of said external portion of the peripheral wall.
This specific realization has the advantage that one of the sealing elements, namely the sealing element at the external portion, is always in a sealing condition, especially in order to avoid any undesired dropping out of liquid, while only the sealing element adapted to seal against the internal part of said spout of said container is opened when said dispensing closure is moved into its opened position by manipulating the toggle by the user, so that a fluid can be dispensed through the opened sealing element at the internal part of said spout of said container and through said dispensing opening in said external portion of said peripheral wall.
According to a preferred realization of the dispensing closure according to the invention said valve element comprises at least one opening through said transverse wall, preferably multiple openings, e.g. 6 openings, and a closing element, which is adapted to close the opening or the multiple openings when said valve element is in its closed position and such that it opens the at least one opening or, if there are multiple openings at least one of the openings or multiple of the openings, at least partly, or even all of the openings, when said valve element is in its opened position, so that a flow of air from the outside into the container is permitted. Preferably said closing element is made of a rigid material, preferred materials are e.g. polypropylene or polyethylene, or also flexible materials, as e.g. TPE or silicone.
This specific realization of the valve has the advantage that it is first of all easy to manufacture, while secondly the fact that the openings, through which flow of air into said container is permitted, are realized directly within the flexible and elastic transverse wall. By providing a more rigid closing element, the relative movement of the closing element to the other parts of the valve element or the transverse wall is well defined and controlled, and the opening of the valve can be easily and reliably realized and secured by the manipulating of the toggle by a user, so that the dispensing closure can be reliably operated without the user having to initiate any additional steps or considering whether a valve has to be opened separately or not.
According to a preferred embodiment said closing element comprises a sealing surface and a post, preferably directly or indirectly extending from said sealing surface, said post being inserted into an opening of said transverse wall of said dispensing element and being attached to said transverse wall. This further secures an easy manufacturing process, as the peripheral wall, the transverse wall and the toggle member, including the openings of the valve element within the transverse wall, can be manufactured by a single step, e.g. by injection molding, while the rigid closing element can be manufactured separately, e.g. also by injection molding, and can easily be inserted into the opening of said transverse wall.
Preferably said valve element comprises a sealing wall extending from said transverse wall of said dispensing closure adapted to seal against the sealing surface of the closing element when said valve is in its closed position. Also such a sealing wall, extending into the direction of the interior of the container, secures a reliable functioning of the valve and a well controlled opening of the valve. Preferably said sealing wall is elastic and flexible and is made of the same material as the transverse wall, so that also this sealing wall can be manufactured together with the peripheral wall, the transverse wall and the toggle member in a single manufacturing step, as mentioned above preferably by injection molding.
In a further preferred embodiment, said transverse wall comprises an actuating element, preferably extending from an upper or outer side of the transverse wall, i.e. on a side of the wall opposite to where the sealing wall does extend, while said actuating element is arranged such that it exerts a force onto said valve element, preferably on said post of said closing element, when said toggle is manipulated by the user in order to distort said transverse wall and to bring the dispensing closure into its opened position. This in addition secures a correct and controlled functioning and especially opening of the valve element when said dispensing closure is brought into its opened position by manipulation of the toggle by a user.
The present invention also relates to a dispensing closure for a container, with a spout for a dispensing fluid, especially as described above, said dispensing closure comprising a peripheral wall, a transverse wall and a toggle member, especially as described above, wherein said peripheral wall and said transverse wall are made of an elastic material. According to another, even independently inventive aspect, said closure further comprises a fastening element being made of a rigid material, said fastening element being attached to said peripheral wall, preferably to a lower part of said peripheral wall, for securing the dispensing closure to the spout of the container, wherein the dispensing closure further comprises a cap being attached to said fastening element by a removable temper evident element, preferably being realized as a removable temper evident ring.
Such a dispensing closure has the advantage that the material for the peripheral wall and the transverse wall can be selected solely with respect to its functioning, especially realizing the desired elastic and/or flexible properties in order to secure a well functioning of the closure and the desired distortion of the peripheral wall and the transverse wall, necessary for a proper opening of the dispensing closure in order to allow a dispense of liquid from the container, while at the same time securing a reliable fastening of the dispensing closure to the container, which may not be possible without said rigid fastening element, depending on the material selected for especially the peripheral and/or transverse wall.
According to this further inventive aspect, the dispensing closure comprises a cap, which protects the dispensing closure from dust and dirt, especially the peripheral wall and the transverse wall as well as the toggle member, while additionally the peripheral wall and the transverse walls are also protected, so that any undesired damages are avoided, e.g. during transport etc., especially before the cap is opened for the first time.
Furthermore, the temper evident element secures, together with the fastening element of a rigid material, an unnoticed opening of the dispensing closure and therefore secures integrity of the container and the fluid stored in the container.
Of course, even after a first opening of the cap and the removal of the temper evident element, preferably a temper element ring, the cap can still be placed onto the dispensing closure for continued protection of the dispensing closure, while nevertheless it would be easily visible from the outside that the dispensing closure has already been opened at least once.
Preferably said fastening element, said temper evident element and said cap are made of the same rigid material, preferably polypropylene, HD-PE, polyethylene or other flexible resins like thermoplastic elastomers or silicone and, even more preferably, these three elements are also realized as a unitary element, which can be manufactured in one step, e.g. by injections molding.
Of course such a dispensing closure with a fastening element, a cap and a removable temper evident element is especially suitable for a dispensing closure as described earlier in the description and as defined in claims 1 to 15, however, it can in principle be also used with other dispensing closures and realized an independent inventive aspect.
The invention also covers a system with a container and such dispensing closures.
Further advantages of a dispensing closure and of a system according to the present invention will become even more apparent in view of the preferred embodiment shown in the following figures:
The container 10 is shown as lying essentially in a horizontal direction, in which the container is also used, so that by manipulating the toggle member 400 by a user, thereby bringing the dispensing closure 100 into its opened position, fluid will be dispensed through a dispensing opening (see
As can be well seen in
As can be also well seen in
As can be also well seen in
The notch 227 can also serve as an additional sealing element.
Furthermore, the outer portion 220 of the peripheral wall 200 comprises a sealing element 225, sealing against an upper part of the spout 20, so that no liquid can enter into the receiving space 230 or leak out of the closure.
Also the inner portion 240 of the peripheral wall 200 comprises a sealing element 245, which seals against an inner portion or inner side wall of the spout 20.
This sealing element 245 is essentially ring-like and seals against the inner part or inner side wall of the spout 20 over its complete circumference, when said dispensing closure 100 is in its closed position as shown in
The dispensing closure 100 also comprises a valve element 500, which comprises multiple openings 520 in the transverse wall 300 and which comprises a closing element 560 with a post 562 and a sealing surface 566. As can be well seen in
The valve element 500 also comprises a sealing wall 540, which has an essentially cylindrical form, extending from said transverse wall 300 of said dispensing closure 100. The sealing wall 540 is, over its complete circumference, in contact with the sealing surface 566 of the closing element 560, so that the valve element 500 is, in the position shown in
As can be well seen, both the transverse wall 300 as well as parts of the peripheral wall 200 are distorted, such that the sealing member 245 moves away from the inner part or inner side wall of the spout 20, so that liquid can be dispensed as indicated by the arrow A.
As can be also well seen in
As can be well seen in
Furthermore, due to the further distortion of the transverse wall 300, also controlled and supported by the actuating element 600, the valve element 500 is in its opened position, with the sealing wall 540 at least partly not being in contact anymore with the sealing surface 566 of the closing element 560, so that air can enter into the container through the openings 520 and between the sealing wall 540 and the sealing surface 566.
Thereby the volume of the container (not shown) which is not occupied anymore by the liquid as being dispensed, can be filled with air from the atmosphere, so that continuously a dispensing of fluid can be performed in a controlled way, especially a constant and preferably laminar dispensing can be secured.
As can be well seen in
It has to be noted that in this specific embodiment the temper evident element 820 and the cap 840 are adapted such that the temper evident element 820 remains partly fixed to the cap 840, however, in other embodiments, it is also possible to completely remove the temper evident element 820 also from the cap 840.
As can be well seen, the fastening element 800, being made of a rigid material, secures the external portion 220 of the peripheral wall in its position, so that especially the notches 24 and 227 are still engaged with each other.
Furthermore, the fastening element 800 comprises a notch 820, being an engagement with a lower part of the external portion 220 of the peripheral wall 200, securing the position of the fastening element 800 relative to the external portion 220 of the peripheral wall 200.
This is of specific importance for closures with a peripheral wall being made of an elastic and/or flexible material, as it is the case in this embodiment, as this material is important for the functioning of the dispensing closure, however, the flexibility of the material also bares a risk that the dispensing closure can be more easily removed from the spout 20 of the container.
The fastening element 800, however, is made of a more rigid material and therefore increases the force being necessary to detach the dispensing closure 100 from the neck 20 of the container. Preferably the fastening ring 800 is arranged such that the fastening ring 800 and the dispensing closure 100 cannot be removed from the neck 20 of the container without destroying or partly destroying the fastening ring 800.
As can be also well seen in
As can be also well seen in
As can be well seen in
With respect to the functioning of the dispensing closure 100, it is especially referred to
In order to avoid repetition, it is otherwise referred to the description of the earlier described embodiment.
The features of the present invention disclosed in the specification, the claims and/or in the accompanying drawings may, both separately and in any combination thereof, be material for realizing the invention in various forms thereof.
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/EP2017/057007 | 3/23/2017 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2018/171886 | 9/27/2018 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
2806620 | Blanch | Sep 1957 | A |
2808183 | Olson | Oct 1957 | A |
3400866 | Fattori | Sep 1968 | A |
3443728 | Scholle | May 1969 | A |
3595445 | Buford | Jul 1971 | A |
3655105 | Johns | Apr 1972 | A |
3739938 | Paz | Jun 1973 | A |
3776434 | Christensen | Dec 1973 | A |
3786964 | Landen | Jan 1974 | A |
3853250 | Alpern | Dec 1974 | A |
3863818 | Hazard | Feb 1975 | A |
3972452 | Welsh | Aug 1976 | A |
4133446 | Albert | Jan 1979 | A |
4135649 | Baldwin | Jan 1979 | A |
4169548 | Bond | Oct 1979 | A |
4211348 | Scholle | Jul 1980 | A |
4248362 | Welsh | Feb 1981 | A |
4444340 | Bond | Apr 1984 | A |
4597500 | Stubbs | Jul 1986 | A |
4645100 | Wells | Feb 1987 | A |
4666064 | Hoehn | May 1987 | A |
4706855 | Litwin | Nov 1987 | A |
4787538 | Fattori | Nov 1988 | A |
4834271 | Litwin | May 1989 | A |
4905875 | Straiton | Mar 1990 | A |
5000359 | Scholle | Mar 1991 | A |
5074441 | Taguchi | Dec 1991 | A |
5711443 | Bennett | Jan 1998 | A |
6003742 | Garcia | Dec 1999 | A |
6050436 | Bennett | Apr 2000 | A |
6076708 | Ceccarelli | Jun 2000 | A |
6135311 | Panec | Oct 2000 | A |
8616416 | Jordan | Dec 2013 | B2 |
20030150191 | Odet | Aug 2003 | A1 |
20050077321 | Liston | Apr 2005 | A1 |
20060266773 | Lindmayer | Nov 2006 | A1 |
20070090110 | Skelton | Apr 2007 | A1 |
20110220674 | Honeyghan | Sep 2011 | A1 |
20110284541 | Webster | Nov 2011 | A1 |
20130175270 | Fujita | Jul 2013 | A1 |
20130213923 | Krautkramer | Aug 2013 | A1 |
20150265079 | Kamping et al. | Sep 2015 | A1 |
20150329253 | Coloneri et al. | Nov 2015 | A1 |
20150360820 | Akutsu | Dec 2015 | A1 |
20170066569 | Wiesman | Mar 2017 | A1 |
Number | Date | Country |
---|---|---|
105197387 | Dec 2015 | CN |
10 2009 000555 | Aug 2010 | DE |
0230782 | Apr 2002 | WO |
2006086835 | Aug 2006 | WO |
Entry |
---|
International Search Report and Written Opinion of the International Searching Authority, dated Jan. 18, 2018 in International Application No. PCT/EP2017/057007. |
Chinese Office Action dated Dec. 2, 2020 for counterpart application No. 201780090853.0 in China. |
Number | Date | Country | |
---|---|---|---|
20200377271 A1 | Dec 2020 | US |