FR2803273A1 - Fastener for liquid container comprises neck and obturator which pivots between orifice sealing and open positions - Google Patents

Abstract

The fastener comprises a neck (2) and an obturator (3) able to pivot about a transverse median axis (12) in the neck orifice. A stop engages the obturator to prevent it from pivoting beyond it first obturating position. When the obturator pivots to disengage a part of the orifice the first half of the obturator tips to the outside of the orifice whilst its second half tips to the inside of the orifice and disengages a passage which allows air to enter into the liquid container (4).

Description

The present invention relates to a closure for a liquid container, of the kind comprising a neck member, provided with an orifice for the flow of the liquid, and a shutter member which is pivotally mounted. around a transverse central axis in the orifice, so as to be movable between a first position, for the closure of said orifice, a second position in which a first half of the shutter member, located on the first side of the pivot axis, disengages a corresponding portion of said orifice to allow the flow of liquid, one of the two elements having a first stop means cooperating with the other element to prevent the shutter member from pivoting beyond its first position when it is rotated from its second to its first position.

In the field of the food industry, it is known to package liquid products such as fruit juices, tomato juice, wine, milk, liquid cream, soup or other similar liquid products in containers. cardboard packaging coated with at least one plastic film, in particular of paralelepiped shape. Such packages are often provided with a closure that can be opened to allow the liquid contained in the package to be poured, and then closed to isolate the liquid contained in the package from the surrounding air.

There are already several models of closures for this type of packaging. The majority of known closures have the disadvantage that, when the shutter member of the closure is in its open position, the user can not obtain a steady flow of liquid when he leans the package to pour the liquid contained in it. in another container. In addition, some known closures also have sealing defects when the shutter member is in its closed position. As a result, even if the shutter member is in its closed position and the package is held by the user in the tilted position and / or while holding the package between the thumb and other fingers of the hand , the user exerts too much pressure on the side walls of the package, while the latter is still relatively full, liquid can leak between the elements of the closure, and the shutter element can even in some cases pass into its open position under the thrust of the liquid contained in the package.

In particular, in a known closure of the kind defined in the preamble, the first stop means is constituted by a fixed wall which closes a half of the orifice of the neck member and which is located below the second half of the shutter member, on the other side of the pivot axis with respect to the first half of said shutter member. As a result, when the user rotates the shutter member from its first to its second position, the first half of said shutter member tilts inwardly of the neck element orifice, thus towards the inside of the container. liquid. Under these conditions, when the user pours the liquid from the container, the first half of the shutter member is in the flow path of the liquid and disturbs this flow. It may even happen that, under the dynamic thrust of the liquid leaving the container through the orifice of the neck member, the shutter member pivots in the opposite direction to its first position or closed position, thus interrupting undesirably the flow of the liquid. To avoid this, it is then necessary to manually hold the shutter element in its second position or open position, while holding the container itself. This can force the user to use both hands and, even if he can perform this double operation with one hand, it obviously complicates the task of the user to pour the liquid. In addition, as the air can enter the container that the same way by which the liquid flows, but in the opposite direction, it follows that the liquid flows more or less by jerks, causing splashing .

The present invention therefore aims to provide closure of the kind defined in the preamble, which allows a smooth flow of the liquid when poured out of the container.

 Alternatively, the invention also aims to provide a closure of the kind defined in the preamble, which has a better seal when the shutter member is in its first position or closed position.

Indeed, the invention relates to a closure characterized in that said first stop means is arranged such that, when the shutter member pivots from its first position to its second position, first half of the shutter member toggles to the outside of said orifice, while the second half of the shutter member, located on the second side of the pivot axis opposite the first side, tilts inwardly of said orifice and releases a passage allowing an air inlet in the liquid container when the shutter member is in the second position.

The closure according to the invention may further have one or more of the following features - the neck member is constituted by a first molded body having an annular portion which defines said orifice; the shutter member is constituted by a second shaped body shaped cap, having a peripheral wall which is engaged in the orifice of the annular portion of the first body; one of the first and second bodies has two aligned journals which are engaged in blind holes formed in the other of the first and second bodies to define said pivot axis; - The annular portion of the first body has an inner surface which has, at least in part, the shape of a concave spherical zone; the peripheral wall of the second body has an outer surface in the form of a convex spherical zone which closely follows the concave spherical inner surface of the annular portion of the first body; the pivot axis passes through the center of the sphere which belongs to said spherical zone; - One of the first and second body comprises a circular bead which engages in a circular groove of the other of the two bodies to establish a seal between the two bodies when the shutter member is in the first position; the annular portion of the first body comprises, at a first end edge which, in use, is farthest from the liquid container, a spout which is integrally formed with said annular portion in a region of the first end edge which is spaced transversely of said pivot axis and which faces the first half of the shutter member; - The second cap-shaped body comprises, at the crown of the cap, a lateral tongue which covers the spout of the first body when the shutter member is in the first position; said lateral tongue or a projection formed under this tongue is adapted to bear on said pouring spout, when the shutter member is in its first position, and constitutes said first stop means; - The first body comprises a flange which is formed integrally with said annular portion at said first end edge thereof and wherein is formed said spout; - The closure further comprises a tamper band which surrounds the lateral tongue of the second body and the flange of the first body at least in the region of the spout, and which is connected to said flange by several thin bridges of material that can be broken by pulling away when pulling on one end of said tamper band; said tamper-evident band includes a protruding portion which overlaps the lateral tongue of the second body to maintain the shutter member in its first position as long as the tamper-evident band has been torn off; one of the first and second bodies comprises a second stop means cooperating with the other of the first and second bodies to prevent the shutter member from pivoting beyond its second position when it is pivoted first to its second position; ; - In one embodiment of the closure, it comprises in addition to a member of a sheet material, which has an opening having a shape and dimensions corresponding to those of the outer contour of the annular portion of the first body; said annular portion partially penetrates the opening of the sheet material member and is secured thereto by gluing or heat sealing; the annular part of the first body comprises, in the vicinity of its second end edge, opposite to the first end edge, a hole which is located in a position diametrically opposite to that of the pouring spout and which forms the said passage; an air inlet when the shutter member is in its second position; said peripheral wall of the second cap-shaped body comprises, in the edge of the cap, a notch which places the inner space of the cap in communication with the spout when the shutter member is in its second position; in another embodiment of the closure, the latter further comprises an element made of a sheet material, which has an opening having a shape and dimensions substantially corresponding to those of the inner contour of the annular portion of the first body; said annular portion is bonded or heat sealed to an outer face of the sheet material member around the edge of the opening thereof; the peripheral edge of the second cap-shaped body is situated just above the opening of the element made of sheet material and has pointed teeth on the side corresponding to the second half of the shutter element; said opening of the sheet material member is hermetically closed by a foil seal, which is sealed at the edge of said opening, a first half of said seal located below the first half of the closure member being manually peelable, while that a second half of said lid located below the second half of the shutter member is tearable by said teeth to establish said air inlet passage when the shutter element is first pivoted for its first time; second position; - In the case of a liquid container having a substantially planar wall having a filling and / or emptying port of the container, said sheet material member may be bonded or heat sealed to said substantially planar wall of the liquid container. , in accordance with the orifice of said wall; - In the case of a liquid container made from a liquid impervious sheet material, said sheet material member may form an integral part of a wall of said container; - In the case of a container whose body is made at least partly of plastic material, the annular portion of the first body can be made in one piece with the body of the container.

The invention also provides a liquid container having a closure having one or more of the above features. Other features and advantages of the invention will emerge more clearly on reading the following description of three embodiments of the invention given by way of example with reference to the attached drawings which - FIG. 1 is a vertical sectional view. a closure according to a first embodiment of the invention, the shutter member of the closure being shown in its first closed position position; - Figure 2 is a partial sectional view along the line II-II of Figure 1; - Figure 3 shows, in section and on a larger scale, a detail of the closure Figure 1; - Figure 4 is a sectional view similar to that of Figure 1, the shutter member of the closure being shown in the second position open position; - Figure 5 is a top view of the closure of Figure 1; - Figure 6 is a vertical sectional view of a closure according to a second embodiment of the invention; - Figure 7 is a partial sectional view showing, on a larger scale, detail of the closure of Figure 6; - Figure 8 is a view similar to Figure 6, the shutter member of the closure being shown in its open position; - Figure 9 is a top view of the closure of Figure 6; FIG. 10 is a vertical sectional view of closure similar to that of FIG. 1, but adapted to a plastic liquid container. FIG. 11 is a sectional view similar to FIG. Figure 10, the shutter member of the closure being shown in its open position; - Figure 12 is a top view of the closure Figure 10. Referring to Figures 1 to 5, we can see a first embodiment of a closure 1 according to the invention. The closure 1 consists essentially of two elements, namely a neck member 2 and a shutter member 3. The member 2 is intended to be to a container 4 in a manner to be described in detail below.

The neck member 2 is constituted by a molded body, made of plastic or elastomer, having an annular portion 2a which defines a flow orifice 5 for the liquid contained in the container 4 when the shutter element 3 is in an open position (FIG. 4).

The shutter member 3 may also be constituted by a molded body a plastic or elastomeric material. It has the shape of a cap having an upper wall or top 3a and a peripheral wall 3b which is engaged in the orifice 5 of the annular portion 2a of the body 2. Although in Figures 1 and 4 the upper wall 3a of the body 3 in the form of cap is flat, it could be at least partially curved so as to have a concave surface or convex outwardly.

Preferably, the inner surface 2b of the annular portion 2a of the body 2 has, at least in part, the shape of a concave spherical zone limited by two planes 6 and 7 between which is center 8 of the sphere to which said member belongs. spherical zone. In the exemplary embodiment shown here, the two planes 6 and 7 correspond to the end edges of the annular portion 2a of the body 2. From this point of view, the outer surface 3c of the peripheral wall 3b of the body 3 has the shape of a convex spherical zone which closely matches the inner surface 2b of the annular portion 2a.

Thanks to the spherical shape of the inner surface of the annular portion 2a of the body 2, and the outer surface of the peripheral wall 3b of the body 3, a good seal is already obtained between the body 2 and 3 when the body 3 constituting the shutter member is in its closed position (Figure 1). This seal can be further improved by providing a circular bead 9 on one of the two bodies 2 and 3, for example on the inner surface 2b of the annular portion 2a of the body 2. The bead 9 engages in a circular groove 11 provided in the other of the two bodies 2 and 3, for example in the outer surface 3c of the peripheral wall 3b of the body 3, when the latter, which forms the shutter member, is in its closed position (Figure 1) . In FIGS. 1 and 4, the dimensions of the bead 9 and of the groove 11, in particular the thickness of the bead and the depth of the groove, have been clearly exaggerated to make them better visible, but in reality their depth can to be weaker, for example a few tenths of a millimeter.

The body 3 is pivotally mounted about a transverse central axis in the orifice of the annular portion 2a of the body 2. For this purpose, one of the two bodies 2 and 3, for example the body 3 is provided with two journals 12 which protrude on the outer surface 3c of its peripheral wall 3b and which are respectively engaged in blind holes 13 formed in the internal surface 2b of the annular portion 2a of the body 2. Alternatively the pins 12 could be formed on the inner surface 2b of annular portion 2a, while the holes 13 could be formed in the outer surface 3c of the wall 3b. In both cases, the pins 12 and the holes 13 are aligned on a straight line passing through the center 8 of the sphere mentioned above. As can be seen in particular in Figure 4, the sealing bead 9 is in a plane located just above the center 8. However, without departing from the scope of the invention, the plane of the sealing bead 9 could to be just below center 8 where it could be confused with the equatorial plane of the sphere.

Preferably, the body 2 is provided with a spout 14 which is formed in one piece with the annular portion 2a of the body 2, substantially at the end edge of this annular portion which, in use, is the further away container 4, that is to say substantially at the plane 7. The pouring spout 14 is located in a region of said end edge which is spaced transversely of the pivot axis of the body 3.

The cap-shaped body 3 comprises, at its upper wall, a lateral tongue 15 which covers the spout 14 when the body 3 is in its closed position (FIG. 1). In this position, the tongue 15 bears on the spout 14 either directly or, as shown, via a projection 16 formed integrally with the tongue 15, on the lower face thereof, that is to say on its side facing the spout 14. Thus, the tongue 15 or the projection 16 forms a stop means which prevents the half of the body 3, located on the left side of the pivot axis in Figures 1, 4 and 5, to pivot further inwardly of the annular portion 2a of the body 2 when the body 3 reaches its closed position (Figure 1).

Preferably, the body 2 comprises a flange 17 which is formed integrally with its annular portion 2a, substantially at the plane 7. The spout 14 is formed in this collar 17 (or in a lateral protrusion 17a of this flange as shown in Figures 6, 8 and 9).

The closure 1 may further advantageously comprise tamper-evident band 18 (FIGS. 1 and 5), which surrounds the lateral tongue 15 of the body 3 and the flange 17 of the body 2 at least in the spout region 14. The tamper-evident band 18 is connected to the collar 17 by a plurality of thin bridges 19 of material which can be ruptured by tearing when traction is exerted on the free end 18a of the strip 18. Preferably, said strip 18 comprises a portion 18b which protrudes at right angles to one of its sides and which overlaps the free end of the tongue 15 of the body 3, so as to keep the latter in its closed position until the tamper band 18 has been torn off. Alternatively, the strip 18 could be connected by bridges 19 to the collar 17 and other bridges to the tongue 15.

The closure 1 described above operates in the following manner. To be able to pour liquid contained in the container 4, the user must first remove the tamper-evident tab 18. Then, the user tilts the shutter member (body 3) in a clockwise direction about its axis until it reaches the position shown in Figure 4. This can be done either by lifting the tongue 15 of the body 3 or by pushing down on the half of the body 3 which is located on the right side of the pivot axis in FIGS. 1, 4 and 5. During this tilting movement of the body 3, its left half tilts towards the outside of the body 2 and the container 4, releasing a passage for the flow of the liquid out of the container 4, while its right half tilts inwardly of the body 2 and the container 4 by disengaging a passage 21 allowing an air inlet into a container 4. This passage 21 may be constituted by a notch or by a hole formed in or near the end edge of the annular portion 2a of the body 2 corresponding to the plane 6, said notch or said hole being located in a position diametrically opposed to that of the spout 14. To pour the liquid, it is then sufficient to the user to tilt the container 4 to the left side of Figure 4 so that the liquid can flow through the orifice 5 and the spout 14. This flow is facilitated by a notch 22 which is formed in the peripheral wall 3b of the body 3 in the form of cap and which places the interior space thereof in communication with the pouring spout 14 when the body 3 is in its open position shown in FIG. 4. Thus, the liquid can be flow out of the container 4 virtually without obstruction along the path indicated by the arrow F, and the flow is effected without jerks due to the presence of the air inlet passage 21.

In order to prevent the body 3 from pivoting at an angle greater than 90 in a clockwise direction from its closed position shown in FIG. 1 and thereby to prevent the body 3 from impeding the flow from the liquid to the spout 14, another stop means may be provided to limit the maximum pivoting amplitude of the body 3 so that it can not pivot beyond a maximum open position such that 4. For this purpose, for example, a small projection 23 in the form of a sector of a circle may be formed in at least one of the two blind holes 13 and a notch 24, also in the shape of a circle sector. but with a greater center angle than that of the sector of the projection 23, can be formed in at least one of the two trunnions 12 as shown in FIG. 3. The respective values of the center angles of the two sectors are chosen in such a way that their difference is equal to the desired maximum amplitude of pivoting of the body 3. Note that if the notch 24 and the projection 23 are provided, it can dispense with the projection 16, because one of the sides of the notch 24 can be used stopping means, in cooperation with the projection 23, to limit the pivotal movement of the body 3 in the counterclockwise direction when it reaches its closed position (Figure 1).

After the user has poured the desired amount of liquid, it can close closure 1 by exerting a thrust on the left half of the body 3 to rotate it anti-clockwise to its closed position shown in Figure 1 In this position, the projection 16 bears on the spout 14 and the sealing bead 9 of the body 2 engages in the circular groove 11 of the body 3 thus ensuring a tight closure.

the embodiment shown in Figures 1 and 4, the closure is intended to be adapted to a liquid container made from a liquid impervious sheet material and having a wall 4a, flat or substantially flat, which has a port 25 for filling and / or emptying the container. For example, the container 4 may be a can made of sheet metal, for example tinplate, aluminum or an aluminum alloy, or it may be a cardboard package, of which at least one of the surfaces is made impermeable to liquids by a film of food grade plastic. The orifice 25 of the wall 4a has shape and dimensions corresponding to those of the outer contour of the annular portion 2a of the body 2. The annular portion 2a is partially engaged in the orifice 25 and is fixed to the wall 4a of the container 4 for example by gluing or heat sealing. The flange 17 of the body 2 may advantageously comprise an annular flange 17b, which is supported on the outer surface of the wall to limit the depth of penetration of the annular portion 2a into the orifice 25 and maintain the spout 14 at a suitable distance the wall 4a. If desired, the annular flange 17b of the flange 17 may also be fixed to the wall 4a for example by gluing or heat sealing.

In an alternative embodiment, the annular portion 2a of the body 2 could be attached in a manner similar to that shown in Figures 1 and 4 to a sheet material member having a slightly larger area than that of the flange 17 and intended to be fixed, for example by gluing or heat-sealing, to the outer surface of the wall 4a of the container 4. FIGS. 6 to 9 illustrate a second embodiment of closure 1 according to the invention. In Figs. 6 to 9, the elements which are identical or which play the same role as those of the embodiment shown in Figs. 1 to 5 are designated by the same reference numbers and will not be described again in detail.

The closure 1 shown in Figures 6 to 9 differs from that shown in Figures 1 to 5 in that the sealing bead 9 is here formed on the outer surface 3c of the peripheral wall 3b of the body 3, while the throat 11 is formed in the inner surface 2b of the annular portion 2a of the body 2.

The closure 1 shown in Figures 6 and 8 further comprises an element 26 of a sheet material, for example cardboard, which has an opening 27 having a shape and dimensions substantially corresponding to those of the inner contour of the annular portion 2a 2. The annular portion 2a of the body 2, the rim 17b of the collar 17 or both are fixed, for example by gluing or heat sealing, to an outer face 26a of the element 26 around the edge of the opening 27 this element 26.

The opening 27 of the element 26 is closed hermetically by a foil, for example a thin aluminum foil, which is sealed at the edge of the opening 27, all around its periphery.

As can be seen in FIG. 6, the peripheral edge of the cap-shaped body 3 is located just above the opening 27 and the operculum of the right side of the body 3, that is to say the opposite side to that on which is the tongue 15, the peripheral edge of the body 3 has teeth 29 whose tips are directed towards the cap 28. Preferably, the teeth 29 are distributed over about half of the circumference of the edge body device 3, on the right side of it. These teeth 29 can tear the cap 28, on a corresponding half of its circumference, when the shutter member (body 3) is tilted for the first time from its closed position shown in Figure 6 at its position. opening shown in Figure 8, thereby to establish a passage 21 allowing an air inlet into the container (not shown) equipped with the closure 1. When the body 3 is in the position shown in Figure 8, the other half of the cap 28, located on the side of the pouring spout 14, can be manually torn off for example by exerting a pull on a tab 28a integral with the cover 28.

The element 26 of the closure 1 is intended to be fixed, by its face 26b, for example by gluing or heat sealing, to a flat or substantially flat wall of a container (not shown). Said wall of the container may be for example the wall 4a of the container 4 shown in Figures 1 and 4, in which case the orifice 27 of the element 26 must be placed in concordance with the orifice 25 of the wall 4a.

Alternatively, the element 26 of the closure 1 shown in Figures 6 and 8 may be an integral part of the container wall equipped with said closure.

Referring to Figures 10 to 12, we can see a third embodiment of the closure 1 according to the invention. In this third embodiment, elements that are identical or that play the same role as those of the previous embodiments are designated by the same reference numerals and will not be described again in detail. The closure 1 shown in Figures 10 to 12 is adapted to a liquid container 4 whose body is made at least partly of plastic. In this case, the annular portion 2a of the body of the closure 1 is made in one piece with the body 4 of the container and forms the neck thereof.

In addition, the closure 1 shown in FIGS. 10 to 12 differs from those previously described in that the tamper-evident band 18 is connected by thin plastic bridges 19, not to the body 2 but to the tongue 15 of the body 3. In this case, projecting portion 18b of the strip 18 is located on the lower edge of said strip and it clings under a circular bead 31 formed on the outer surface of the annular portion 2a of the body 2 in the upper region of said annular portion.

It goes without saying that the embodiments which have been described above have been given by way of purely indicative and non-limiting example, and that many modifications can easily be made by those skilled in the art without however depart from the scope of the invention. For example, instead of being formed on the peripheral edge of the body 3 in the form of a cap, the teeth 29 could be formed on an element formed in one piece with the body 2 and connected to it. ci by a flexible hinge, said element being pushed towards the inside of the container and tearing, thanks to its teeth, the seal 28 when the body 3 is tilted from its closed position to its open position.

In addition, although in the preferred embodiments of the closure 1 which have been described above the annular portion 2a of the body 2 has a circular inner contour, this inner contour could have any other shape, preferably non-angular, for example oval, the peripheral wall 3b of the body 3 then obviously having an outer contour corresponding to the inner contour of the annular portion 2a.

Claims (1)

1. - Closing for liquid container (4), comprising a member (2) forming a neck, provided with a hole (5) for the flow of liquid, and shutter member (3) which is pivotally mounted around a transverse central axis (12) in the orifice, so as to be movable between a first position, for the closure of said orifice, and a second position where a first half of the shutter element, located on a first side of the pivot axis (12), releases a corresponding portion of said orifice (5) to allow the flow of liquid, one of the two elements 3) having a first stop means (15, 16) cooperating with the other element. to prevent the shutter member (3) from pivoting beyond its first position when it is pivoted from its second position to its first position, characterized in that said first stop means (15, 16) is arranged in such a way when the shutter member (3) pivots from its first position to its second position, the first half of the shutter member tilts outwardly of said orifice (5), while the second half of the shutter member, located on a second side of the pivot axis opposite the first side, tilts inwardly of said orifice and disengages a passage (21) allowing an air inlet into the liquid container (4) when the shutter member is in his second position. 2. - Closure according to claim 1, characterized in that the element (2) forming a neck consists of a first molded body (2) having an annular portion (2a) which defines said orifice (5), in that shutter element (3) is constituted by a second shaped body (3) in the form of a cap, having a peripheral wall (3b) which is engaged in the orifice (5) of the annular part (2a) of the first body (2 ), and in that one of the first and second bodies (2, 3) has two aligned journals (12) which are engaged in blind holes (13) formed in the other of the first and second bodies to define said axis pivoting. 3. - Closing according to claim 2, characterized in that the annular portion (2a) of the first body (2) has an inner surface (2b) which has, at least in part, the shape of a concave spherical zone, that the peripheral wall (3b) of the second body (3) has an external surface (3c) in the form of a convex spherical zone which closely follows the inner surface (2b) in the form of a concave spherical zone of the annular portion (2a) the first body (2), in that the pivot axis (12) passes through the center (8) of the sphere to which said spherical zone belongs. 4. - Closing according to claim 2 or 3, characterized in that one of the first and second body (2, has a circular bead (9) which engages in a circular groove (11) of the other of the two body for sealing between the two bodies when the shutter member (3) is in its first position 5. - Closing according to any one of claims 2 to 4 characterized in that the annular portion (2a) of the first body (2) has, at a first end edge which, in use, is furthest from the liquid container, a spout (14) which is integrally formed with said annular portion in a region of the first end edge which is transversely spaced from said pivot axis (12) and which faces the first half of the shutter element (3) 6. - Closing according to claim 5, characterized in that the second body (3) cap-shaped comprises, at the top (3a ) of the cap, a lateral tongue (15) which covers the spout (14) of the first body (2) when the shutter element (3) is in the first position, and in that said lateral tongue (15) or a protrusion (16) formed under this tongue is adapted to bear on said spout (14), when the shutter member (3) is in its first position, and constitutes said first stop means (15, 16). 7. - Closing according to claim 6, characterized in that the first body (2) comprises a flange (17) which is formed integrally with said annular portion (2a) at said first end edge of this last and which is formed said spout (14). 8. - Closure according to claim 7, characterized in that it further comprises a tamper band (18) which surrounds the lateral tongue (15) of the second body (3) and flange (17) of the first body (2). ) at least in the region of the spout (14), and which is connected to said flange (17) by a plurality of thin material bridges (19) which can be torn apart by pulling on one end of said web inviolability (18). 9. Closure according to claim 8, characterized in that said tamper-evident band (18) has a projection (18b) which overlaps the lateral tab (15) of the second body (3) to hold the shutter element in its first position. position as long as the tamper band (18) has torn off. - Closing according to any one of claims 2 to 9, characterized in that one of the first and second body (2, 3) comprises a second stop means (23, 24) cooperating with the other of the first and second body to prevent the shutter member (3) from pivoting beyond its second position when it is rotated from its first - second position. 11. - A closure according to any one of claims 2 to 10, characterized in that it further comprises a member (4a) of a sheet material, which has an opening (25) having shape and dimensions corresponding to those of the outer contour of the annular portion (2a) of the first body (2), and in that said annular portion (2a) partially penetrates into the opening (25) of the sheet material member (4a) is attached to this one by gluing or heat sealing. - Closure according to claim 11 attached to claim 5, characterized in that the annular portion (2a) of the first body (2) comprises, in or near its second end edge, opposite to the first end edge, a hole (21) which is located in a position diametrically opposed to that of the spout (14) and which forms said air inlet passage (21) when the shutter member (3) is in its second position, and in that said peripheral wall (3b) of the second cap-shaped body (3) comprises, in the edge of the cap, a notch (22) which places the interior space of the cap in communication with the spout (14). ) when the shutter element (3) is in its second position. 13. Closure according to any one of claims 2 to 10, characterized in that it further comprises a member (26) of a sheet material, which has an opening (27) having a shape and dimensions corresponding substantially to those of the inner contour of the annular portion (2a) of the first body (2), and in that said annular portion (2a) is fixed by bonding or heat-sealing to an outer face (26a) of the element (26) in sheet material around the edge the opening (27) thereof. 14. - Closure according to claim 13, characterized in that the peripheral edge of the second body (3) in the form of cap is located just above the opening (27) of the element (26) sheet material and has teeth pointed (29) on the side corresponding to the second half of the shutter element (3), and in that said opening (27) the element (26) of sheet material is hermetically closed by a foil seal (28) thin, which is sealed at the edge of said opening, a first half of said lid located below the first half of the shutter member being manually removable, while a second half of said lid located below the second half of the shutter member is tearable by said teeth (29) for establishing said air inlet passage (21) when first pivoting the shutter member (3) from its first to its second position. 15. - Closing according to any one of claims 11 to 14, for a liquid container (4) having a wall substantially (4a) having an orifice (25) for filling and / or emptying the container, characterized in that said sheet material member (26) is adapted to be bonded or heat sealed to said substantially planar wall (4a) of the liquid container (4) in accordance with the aperture (25) of said wall. 16. - Closure according to any one of claims 11 to 14, for a liquid container (4) made from a liquid impervious sheet material, characterized in that said element (4a) of sheet material is part integral part of a wall (4a) of said container 17. Closure according to any one of claims 11 to 14, for a liquid container (4) whose body is made at least partly of plastic, characterized in that the annular portion (2a) of the first body (2) is formed in one piece with the body of the container (4). 18. - Liquid container, characterized in that it is provided with a closure (1) according to any one of claims 1 to 17.