Claims:WE CLAIM:

1. A disposable liquid container (70), e.g. a collapsible pouch, e.g. a pouch (70) of a bag in box container assembly (75), which disposable container is provided with an externally fitted tap component (1;100) having a manually operable main valve for controlled dispensing of a liquid from said container by a user, the tap component (1;100) comprising:
- a housing (2;110) comprising:
- a connector portion (4;111) connecting the tap to the liquid container and forming an inlet (5;112) of the tap component,
- a wall portion (7;113) delimiting a main valve seat (8;116),
- a dispensing outlet (23;123) of the tap component,
- a manually operable actuator (13,14;150) that is movable relative to the housing,
- a mobile main valve member (16;130,132) that is embodied to cooperate with the valve seat (8;116) and that is actuated by the manually operable actuator to allow a user to open the main valve of the tap for dispensing of said liquid from the container,

characterized in that

the tap component is provided with an anti-refill valve (40;140), wherein the housing delimits an anti-refill valve seat (42;142) in between the main valve seat (8;116) and the dispensing outlet (23;123), and wherein the anti-refill valve comprises a mobile anti-refill valve member (41;141) embodied to cooperate with the anti-refill valve seat (42;142), which anti-refill valve member automatically closes upon an attempt to refill liquid into the container via the dispensing outlet of the tap component.

2. A disposable container (70) according to claim 1, wherein the dispensing outlet (23;123) is at a bottom end of the housing (2;110), and wherein the anti-refill valve (40;140) is arranged within the housing above the dispensing outlet (23;123), wherein the anti-refill valve is embodied such that, in normal use position, the anti-refill valve member (41;141) is below and away from the anti-refill valve seat (42;142), and embodied so that, if the disposable container and/or the tap component is held upside down, gravity causes the anti-refill valve member (41;141) to come to rest on the anti-refill valve seat (42;142).

3. A disposable container (70) according to claim 1 or 2, wherein the dispensing outlet at the bottom end of the housing is an annular dispensing outlet (23;123) between an outer wall portion (21;121) and an inner cup portion (22;122) of the housing, said inner cup portion (22;122) having a bottom (22a;122a), a raised circumferential wall (22b;122b), and an open top, wherein one or more spoke portions (24;124) of the housing extend between the outer wall portion (21;121) and the inner cup portion (22;122), and wherein the anti-refill valve member (41) is vertically mobile received in the inner cup portion (22;122) and has a head (44;144) adapted to cooperate with the anti-refill seat (42;142) there above.

4. A disposable container (70) according to claim 3, wherein said head (44;144) has an outer diameter that exceeds the outer diameter of the inner cup portion (22;122).

5. A disposable container (70) according to claim 3 or 4, wherein the anti-refill valve member (41;141) has a stem (43;143) received in said inner cup portion (22;122) and a head (44;144) on top of said stem.

6. A disposable container (70) according to any of claims 1 - 5, wherein the housing (2) comprises a separately manufactured, e.g. injection molded, bottom end housing part (20;120) that is secured to a main part (3) of the housing, said bottom end housing part (20;120) having an outer wall portion (21;121) and an inner cup portion (22;122), and an annular dispensing outlet (23;123) between said outer wall portion (21;121) and an inner cup portion (22;122), said inner cup portion having a bottom (22a;122a), a raised circumferential wall (22b;122b), and an open top, wherein one or more spoke portions (24;124) of the bottom end housing part (20;120) extend between the outer wall portion (21;121) and the inner cup portion (22;122), and wherein the anti-refill valve member (41) is vertically mobile received in the inner cup portion.

7. A disposable container (70) according to any of claims 1 - 6, wherein the tap component (1) further comprises a tamper-evident member (60) that is arranged so as to block operation of the manually operable actuator (13,14) of the main valve and that is removable and/or breakable by a user to allow for operation of the manually operable actuator of the main valve.

8. A disposable container (70) according to any of claims 1 - 7, wherein the container (70) is a collapsible pouch provided with a spout, and wherein the housing is provided with a connector portion (4;111) inserted into the spout, and wherein a permanent snap fit connection is provided between said spout and the inserted connector portion.

9. A tap component (1;100) adapted to be fitted externally onto a disposable container (70), e.g. a collapsible pouch, e.g. a pouch (70) of a bag in box container assembly (75), wherein the tap component has a manually operable main valve for controlled dispensing of a liquid from said container by a user, the tap component comprising:
- a housing (2;110) comprising:
- a connector portion (4;111) adapted to connect the tap component to the liquid container and forming an inlet (5;112) of the tap component, e.g. a permanent snap fit connector portion insertable into a spout (71) fitted on a collapsible pouch,
- a wall portion (7;113) delimiting a main valve seat (8;116),
- a dispensing outlet (23;123) of the tap,
- a manually operable actuator (13,14;130,150) that is movable relative to the housing,
- a mobile main valve portion (16;132) that is actuated by the manually operable actuator (13,14;130,150) and embodied to cooperate with the valve seat (8;116) and allows a user to open the main valve of the tap for dispensing of said liquid,

characterized in that

that the tap component (1;100) is provided with an anti-refill valve (40;140), wherein the housing delimits an anti-refill valve seat (42;142) in between the main valve seat (8;116) and the dispensing outlet (23;123), and wherein the anti-refill valve comprises a mobile anti-refill valve member (41;141) that is embodied to cooperate with the anti-refill valve seat (42;142), which anti-refill valve member automatically closes upon an attempt to refill the container via the dispensing outlet (23;123) of the tap.

10. A tap component (1) according to claim 9, wherein the dispensing outlet (23;123) is at a bottom end of the housing (2;110), and wherein the anti-refill valve (40;140) is arranged within the housing above the dispensing outlet (23;123), wherein the anti-refill valve is embodied such that, in normal use position, the anti-refill valve member (41;141) is below and away from the anti-refill valve seat (42;142), and embodied so that, if the disposable container and/or the tap component is held upside down, gravity causes the anti-refill valve member (41;141) to come to rest on the anti-refill valve seat (42;142).

11. A tap component (1) according to claim 9 or 10, wherein the dispensing outlet at the bottom end of the housing is an annular dispensing outlet (23;123) between an outer wall portion (21;121) and an inner cup portion (22;122) of the housing, said inner cup portion (22;122) having a bottom (22a;122a), a raised circumferential wall (22b;122b), and an open top, wherein one or more spoke portions (24;124) of the housing extend between the outer wall portion (21;121) and the inner cup portion (22;122), and wherein the anti-refill valve member (41;141) is vertically mobile received in the inner cup portion (22;122) and has a head (44;144) adapted to cooperate with the anti-refill seat (42;142) there above.
, Description:TITLE: A DISPOSABLE LIQUID CONTAINER PROVIDED WITH A DISPENSING TAP HAVING AN ANTI-REFILL VALVE

FIELD OF THE INVENTION
The present invention relates to a disposable liquid container, more particularly to a collapsible pouch with an externally fitted tap component having a manually operable main valve for controlled dispensing of a liquid from the container.

BACKGROUND OF THE INVENTION
Collapsible pouches and bag in box assemblies including a collapsible pouch are commonly used to package beverages, like alcoholic beverages, e.g. wine, spirits, fruit juice, milk, such as ultrahigh temperature pasteurized milk, and other liquids, e.g. detergents, motor oils, etc.

In order to allow a user to dispense the liquid from the container in a controlled manner, e.g. to fill a glass of wine, it is known in the art to provide the container with a manually operable tap. The tap can be prefitted on the pouch or supplied along with the pouch or bag in box packaging so that the user can fit the tap himself.

Examples of liquid dispensing taps are shown in GB 2 138 544, GB 2 169 061, EP0432070, and WO2015/142164.

Such liquid dispensing taps are mass produced, low cost products as they are commonly disposed together with the container, when the container has been emptied.

In an embodiment, as known from the mentioned prior art and common in the field, the manually operable actuator may be a manually depressable push button, that is arranged on the dispensing tap so as to allow operation by a user’s finger, e.g. a thumb. Preferably the exterior of the housing has one or more finger grip members allowing a user to grip the housing with one or more fingers and depress the push button using the thumb.

Other embodiments of the manually operable actuator are also possible, e.g. a pull type tap with a winged plunger, e.g. as disclosed in EP0432070, so that one can place the thumb on a top face of the housing of the tap and use two fingers, each gripper underneath a corresponding wing of the plunger, to lift the plunger and open the main valve of the tap. Other embodiments are also possible, e.g. a depressable lever, a rotary knob, etc.

In an embodiment, as known from the mentioned prior art and common in the field, the tap comprises a resilient biasing member providing a biasing force on the mobile main valve member urging the main valve into the closed position thereof, so as to obtain a normally closed main valve.

For example a push button of the tap is embodied as a one piece resilient material push button providing said biasing force.

In another embodiment the main valve comprises a resilient membrane having an outer periphery secured to the housing and having a central portion forming the movable main valve member of the tap, wherein the resilient membrane provides said biasing force that urges the main valve member into the closed position thereof.

OBJECTIVE OF THE INVENTION
The object of the present invention is to provide enhanced reliability of the quality of the liquid in the container, in particular in view of protecting the liquid from adulteration.

Another object of the present invention is to propose measures that provide improvements over the known taps and liquid containers provided with such taps.

SUMMARY
This summary is provided to introduce aspects related to a tap component adapted to be fitted externally onto a disposable container, wherein the tap component has a manually operable main valve for controlled dispensing of a liquid from the container by a user. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter.

In an implementation of the present disclosure a disposable liquid container with an externally fitted tap component is disclosed. The disposable liquid container for e.g. may be a collapsible pouch, or a pouch of a bag in box container assembly. The tap component may comprise a manually operable main valve for controlled dispensing of a liquid from said container by a user. The tap component may further comprise:
- a housing comprising:
- a connector portion connecting the tap component to the liquid container and forming an inlet of the tap component,
- a wall portion delimiting a main valve seat,
- a dispensing outlet,
- a manually operable actuator that is movable relative to the housing,
- a mobile main valve member that is embodied to cooperate with the valve seat and that is actuated by the manually operable actuator to allow a user to open the main valve of the tap for dispensing of the liquid from the dispensing outlet.

The disposable liquid container is characterized in that the tap component is provided with an anti-refill valve, wherein the housing delimits an anti-refill valve seat in between the main valve seat and the dispensing outlet, and wherein the anti-refill valve comprises a mobile anti-refill valve member embodied to cooperate with the anti-refill valve seat, which anti-refill valve member automatically closes upon an attempt to refill liquid into the container via the dispensing outlet of the tap component.

The above inventive measure provides a reliable and effective countermeasure for unauthorized refilling of liquid into the container via the dispensing outlet of the housing of the tap.

In another implementation of the present invention also a tap component that is adapted to be fitted externally onto a disposable liquid container is disclosed. The tap component may have a manually operable main valve for controlled dispensing of a liquid from the container by a user, the tap may comprise:
- a housing comprising:
- a connector portion adapted to connect the tap to the disposable liquid container and forming an inlet of the tap, e.g. a permanent snap fit connector portion insertable into a spout fitted on a collapsible pouch,
- a wall portion delimiting a main valve seat,
- a dispensing outlet of the tap,
- a manually operable actuator that is movable relative to the housing,
- a mobile main valve portion that is embodied to cooperate with the valve seat and that is actuated by the manually operable actuator to allow a user to open the main valve of the tap for dispensing of said liquid.

The tap is characterized in that it is provided with an anti-refill valve, wherein the housing delimits an anti-refill valve seat in between the main valve seat and the outlet, and wherein the anti-refill valve comprises a mobile anti-refill valve member that is embodied to cooperate with the anti-refill valve seat, which anti-refill valve member automatically closes upon an attempt to refill liquid into the container via the dispensing outlet of the tap.

BRIEF DESCRIPTION OF THE DRAWINGS
The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.

Fig. 1 shows an exploded view of a liquid dispensing tap component according to the invention,

Fig. 2 shows the tap of figure 1 in cross sectional view,

Fig. 3 illustrates the tamper evident member of the tap component of figure 1.

Fig. 4 illustrates a pouch, for example a pouch of a bag in box container, provided with a spout to which the tap component of figure 1 can be fitted,

Fig. 5 shows a bag in box container with a carton outer container and inside thereof the pouch provided with a tap component,

Fig. 6a shows an alternative liquid dispensing tap component according to the invention,

Fig. 6b shows a detail of the tap component of figure 6a on larger scale,

Fig. 6c the detail of the tap component of figure 6b when inverted and closed.

DETAILED DESCRIPTION
In an embodiment, of the present disclosure a tap for disposable container is disclosed. The tap in accordance to the embodiment may be a manually operable actuator with depressable push button, that is arranged on the dispensing tap so as to allow operation by a user’s finger.

In another embodiments the manually operable actuator may be a pull type tap with a winged plunger. Further the tap may comprises a resilient biasing member providing a biasing force on the mobile main valve member urging the main valve into the closed position thereof, so as to obtain a normally closed main valve.

For example a push button of the tap is embodied as a one piece resilient material push button providing said biasing force.

In another embodiment the main valve comprises a resilient membrane having an outer periphery secured to the housing and having a central portion forming the movable main valve member of the tap, wherein the resilient membrane provides said biasing force that urges the main valve member into the closed position thereof.

In an embodiment the dispensing outlet is at a bottom end of the housing and the anti-refill valve is arranged within the housing of the tap above the dispensing outlet, wherein the anti-refill valve is embodied such that, in a normal use position, the mobile anti-refill valve member is below and away from the anti-refill valve seat, and embodied so that, if the disposable container and/or the tap component is held upside down, gravity causes the mobile anti-refill valve member to come to rest on the anti-refill valve seat. So, merely bringing the tap component or the entire container in upside down orientation causes the anti-refill valve to close and so counters the refilling of the container via the dispensing outlet.

In an embodiment the dispensing outlet at the bottom end of the housing is an annular dispensing outlet between an outer wall portion of the housing and an inner cup portion of the housing. Herein the inner cup portion has a bottom, a raised circumferential wall, and an open top, wherein one or more spoke portions of the housing extend between the outer wall portion and the inner cup portion. The anti-refill valve member is vertically mobile received in the inner cup portion and extends upward through the open top of the inner cup portion. The valve member then has a head protruding above the inner cup portion, which head is adapted to cooperate with the anti-refill seat there above. This arrangement allows for a design wherein access to the mobile valve member of the anti-refill valve is very difficult to achieve during any refill attempt. In normal use the anti-refill valve does not hinder the outflow via the outlet. For example, as preferred, the head has an outer diameter that exceeds the outer diameter of the cup portion

The bottom of the cup portion is preferably solid, so lacking any holes so as to hinder access to the movable valve member.

In an embodiment the anti-refill valve member has a stem received in the inner cup portion and a head on top of said stem. The stem may for instance have the section of a cross.

In an embodiment the head of the anti-refill valve member is conical from an upper tip of the head, e.g. a pointed or blunt tip, to a wider outer diameter of the head. In this embodiment, preferably, the corresponding seat of the anti-refill valve is also conical, so as to obtain a reliable seal when the anti-refill valve is closed, for example when the container is placed upside down.

In an embodiment the housing of the tap comprises a separately manufactured, e.g. injection molded, bottom end housing part that is secured to the rest of the housing, said bottom end housing part having an outer wall portion and an inner cup portion, and an annular dispensing outlet between the outer wall portion and the inner cup portion, wherein the inner cup portion has a bottom, a raised circumferential wall, and an open top. One or more spoke portions of the bottom end housing part extend between the outer wall portion and the inner cup portion. The anti-refill valve member is vertically mobile received in the inner cup portion. This embodiment allows for a cost-effective production of the tap. For example the bottom end housing part is secured by means of a permanent snap fit or a weld, adhesive, etc. onto a main part of the housing that includes the connector portion, as well as wall portions defining the main valve seat and the seat of the anti-refill valve.

In an embodiment the tap component further comprises a tamper-evident member that is arranged so as to block operation of the manually operable actuator of the main valve and that is removable and/or breakable by a user to allow for operation of the manually operable actuator of the main valve. This allows to guarantee the quality of the liquid in the container prior to first opening of the main valve.

In an embodiment the container is a collapsible pouch provided with a spout, e.g. a spout having a neck and a planar radial flange sealed to the wall of a collapsible pouch, wherein the housing is provided with a connector portion that has been inserted into the spout, and wherein a permanent snap fit connection is provided between said spout and the inserted connector portion. This arrangement is easy to assemble during production of pouches, e.g. the pouch being filled through the spout and then the tap being fitted in the spout and secured via the permanent snap fit, and avoids that anyone detaches the tap component from the container in view of unauthorized refilling.

In the drawings a liquid dispensing tap 1 is shown that is adapted to be connected to a liquid container, e.g. to a pouch of a bag in box container, for controlled dispensing of a liquid from the container. For example the pouch of the bag in box container is filled with a beverage, e.g. wine. The pouch may be provided with a fitment to which the tap 1 is connected or the tap 1 can be directly connected to the pouch. Instead of a pouch the container may also have another design, e.g. as a bottle, canister, etc.

With reference to figures 1, 2, and 3 an example of a tap component 1 according to the invention will be discussed, which component 1 is adapted to be fitted externally onto a disposable liquid container, e.g. the collapsible pouch 70 as shown in figure 4, e.g. as part of a bag in box container assembly 75 as illustrated in figure 5.

Generally the tap component 1 has a normally closed main valve that is manually operable by a user for controlled dispensing of a liquid from the liquid container by the user.

The illustrated tap 1 comprises a housing 2 having a main housing part 3 that includes a tubular connector portion 4 that is adapted to connect the tap 1 to the disposable liquid container. Preferably the main housing part 3 is monolithic and injection molded of suitable plastic material.

The housing 2 further comprises a separately manufactured, e.g. injection molded, bottom end housing part 20 that is permanently secured to the main part 3 of the housing.

The tubular connector portion 4 is insertable into the neck of a spout 71 fitted on the container and forms an inlet 5 of the tap 1. As is preferred the spout 71 and the connector portion 4 form a permanent snap fit so that the user cannot remove the tap 1 from the container.

The housing 2, here the main part 3 thereof, has a wall portion 7 delimiting a main valve seat 8 of the main valve of the tap 1.

The tap 1 is further provided with a manually operable actuator, here a winged plunger 13 with wing tabs 14 that are to be lifted by the user to open the main valve, that is movable relative to the housing 2.

The main valve further comprises a resilient membrane 15 having an outer periphery secured to the main part 3 of the housing. This membrane has a central portion 16 that forms the movable main valve member of the tap 1. The resilient membrane 15 is shaped like a dome and provides a biasing force that urges the main valve member 16 into the closed position thereof seated onto the main valve seat 8. By lifting the wing tabs 14 the user pulls the plunger 13 upwards and so opens the main valve of the tap for dispensing of liquid.

The tap is provided with an anti-refill valve 40.

In this embodiment the bottom end housing part 20 has an outer wall portion 21 and an inner cup portion 22 and an annular dispensing outlet 23 of the tap 1 is present between the outer wall portion 21 and the inner cup portion 22.

The inner cup portion 22 has a bottom 22a, a raised circumferential wall 22b, and an open top. One or more spoke portions 24 of the bottom end housing part 20 extend between the outer wall portion 21 and the inner cup portion 22.

An anti-refill valve member 41 is vertically mobile received in the inner cup portion 22. The housing part 3 delimits, below the main valve seat 8, an anti-refill valve seat 42 that is located in the flow path for the liquid between the main valve seat 8 and the outlet 23. As preferred the main valve seat 42 is formed by a wall of the main housing part 3, e.g. at the bottom side thereof, allowing to secure the part 20 thereon with the valve member 41 in between.

The mobile anti-refill valve member 41 is embodied to cooperate with the anti-refill valve seat 42 and automatically closes upon an attempt to refill liquid into the container via the dispensing outlet 23 of the tap 1, in particular as soon as the container is inverted to refill via the dispensing outlet 23.

The annular space of the outlet 23 can be optimized in view of desired outflow and the desire to make access into the housing via the outlet 23 difficult or impossible. The spoke portions 24 can be designed to further complicate access via the outlet 23, e.g. the spoke portions being non-vertical.

The valve member 41 has a stem 43 received in the open topped inner cup portion 22 and has a head 44 protruding above the inner cup portion 22.

The head 44 is adapted to cooperate with the anti-refill seat 42 there above in order to close the anti-refill valve, for example as soon as one holds the container and tap 1 upside down.

The stem 43 may for instance have the section of a cross.

The head 44 of the anti-refill valve member has a conical surface from an upper tip of the head to a wider outer diameter of the head. In this embodiment, preferably, the corresponding seat 42 of the anti-refill valve is also conical, so as to obtain a reliable seal when the anti-refill valve is closed, for example when the container is placed upside down.

Then outer diameter of the head 44 is larger than the outer diameter of the cup portion 22 as is preferred.

In this arrangement access to the mobile valve member 41 of the anti-refill valve is very difficult to achieve during any refill attempt. In normal use the anti-refill valve does not hinder the outflow via the outlet.

The tap component 1 further comprises a tamper-evident member 60 that is arranged so as to block operation of the manually operable actuator of the main valve and that is removable and/or breakable by a user to allow for operation of the manually operable actuator of the main valve. Here the member 60 is adapted to block the lifting of the wing tabs 14 and the user is required to remove the member 60 by gripping lip 61 and tearing the tear line 62 in the annular portion 63 of the member 60 so that the member 60 can be removed from the tap 1. The housing includes a cap member 65 that is to be fitted stationary on the main housing part 3 and the member 60 is arranged between the cap member 65 and the wing tabs 14.

Figure 4 shows pouch 70, for example pouch 70 of a bag in box container 75. The pouch has a spout to which the tap 1 of figure 1 can be fitted.

Figure 5 shows a bag in box container 75 with a carton outer container and inside thereof the pouch 70, provided with the tap 1 of figure 1.

In figures 6a, b a tap component 100 is shown that is based on the design disclosed in WO2015/142164 to which reference is made here for a detailed description of its structure and operation. The tap component is additionally provided with the anti-refill valve 140.

The tap component comprises a plastic housing 110, a plunger 130, and a push button 150.

The housing 110 comprises a connector portion 111 that is adapted to connect the tap to a liquid container and forms an inlet 112 of the tap via which liquid from the container enters the tap 100.
The housing 110 further comprises, as integral part thereof as is preferred, a dispensing chamber wall portion 113 delimiting a dispensing chamber 114 having an axis 115. This dispensing chamber wall portion 113 comprises a main valve seat 116 at an axial end thereof.

The plunger 130 has a stem and a main valve portion 132 that is integrally molded with the stem. The stem has an actuator engagement portion outside the dispensing chamber, generally at the front side of the tap 100 in practical use. The stem extends along the axis through a bore in the dispensing chamber wall portion 113 and through the dispensing chamber 114.

The valve portion 132 is embodied to cooperate with the valve seat 116. The plunger 130 is axially movable or reciprocable along the axis 115 between a closed position, wherein the tap 100 is closed, and an open position, wherein the tap is open.

The tap 100 comprises the push button 150 that acts as manually operable plunger actuator of the tap 100. The button 150 is coupled to the engagement portion 133 of the stem of the plunger 130 and allows a user to open the main valve of the tap 100 for dispensing of liquid from the container.

The manually depressable push button 150 is exposed to allow operation by a user’s finger, e.g. a thumb. In the shown embodiment the push button 150 is embodied as a one piece resilient material push button, as is preferred of polypropylene (PP) material, providing a biasing force on the plunger 130 urging the plunger to the closed position thereof. In an alternative the push button is made of an elastomer, e.g. a thermoplastic elastomer (TPE).

The tap is provided with an anti-refill valve 140.

In this embodiment a bottom end housing part 120 has an outer wall portion 121 and an inner cup portion 122 and an annular dispensing outlet 123 of the tap 100 is present between the outer wall portion 121 and the inner cup portion1 22.

The inner cup portion 122 has a bottom 122a, a raised circumferential wall 122b, and an open top. One or more spoke portions 124 of the bottom end housing part 120 extend between the outer wall portion 121 and the inner cup portion 122.

An anti-refill valve member 141 is vertically mobile received in the inner cup portion 122.
The anti-refill valve seat 142 is located in the flow path for the liquid between the main valve seat 116 and the outlet 123.

In this example the main valve seat 116 is formed by a wall of the main housing part and the anti-refill valve seat 142 is formed as an insert that is mounted into or on the main housing part.

The mobile anti-refill valve member 141 is embodied to cooperate with the anti-refill valve seat 142 and automatically closes upon an attempt to refill liquid into the container via the dispensing outlet 123 of the tap 100.

The valve member 141 has a stem 143 received in the open topped inner cup portion 122 and has a head 144 protruding above the inner cup portion 122.

The head 144 is adapted to cooperate with the anti-refill seat 142 there above in order to close the anti-refill valve, for example as soon as one holds the container and tap 1 upside down.

The head 144 of the anti-refill valve member has a conical surface from an upper tip of the head to a wider outer diameter of the head. In this embodiment, preferably, the corresponding seat 142 of the anti-refill valve is also conical, so as to obtain a reliable seal when the anti-refill valve is closed, for example when the container is placed upside down. See figure 6c.