FR3102759A1 - Capsule with integrated valve for product storage container, especially a cosmetic product - Google Patents

Abstract

The cap comprises at least one base 14 provided with a product dispensing duct 20 and a product dispensing valve 22 integral with the dispensing duct 20. The cap is made in a single piece by molding a synthetic material . The distribution valve 22 comprises a beam 36 extending transversely inside the distribution duct 20, and at least two shutters 38 integral with the beam and extending on either side thereof. . The shutter flaps 38 are elastically deformable and movable at least between: - a closed position in which the free edge of each flap engages in a sealed manner against the distribution duct, and - an open position in which the free edge of each flap is at least partly at a distance from the distribution duct, said flap extending inside the distribution duct. Figure for abstract: Fig 9

Description

Cap with integrated valve for product storage container, in particular a cosmetic product

The present invention relates to a closure and dispensing cap suitable for being removably attached to a container made for example in the form of a jar, a bottle, a flask, etc.

The invention is particularly suitable for sealing storage containers for cosmetic, pharmaceutical or dermato-pharmaceutical products. By "cosmetic product" is meant in particular within the meaning of the present invention, a product as defined in Regulation (EC) No. 1223/2009 of the European Parliament and of the Council of November 30, 2009 relating to cosmetic products.

Such products can for example be distributed in aqueous form, an oil, a milk, a cream, a paste, a gel, a mousse, etc.

In the field of the cosmetics industry, it is relatively common to use closing and dispensing caps made by molding a synthetic material.

Conventionally, such a capsule comprises a base which is fixed on the container containing the product and provided with a conduit for dispensing said product, and a closure cap comprising a stud and articulated in rotation on the base between a closed position said duct and an open position. Closing of the base distribution duct is ensured solely by the stud of the closing cover which engages inside this duct in the closed position.

Such a capsule is generally called a "service capsule" and is therefore capable of performing a dual function, namely closing the container and dispensing the product.

In the field of the food industry, it is also known to use this type of capsule for food products such as ketchup, mustard and mayonnaise.

Compared to a service capsule used in the cosmetics field, these capsules are also equipped with a dispensing valve with a stop-drip function.

This type of distribution valve is generally formed of a flexible membrane, for example made of silicone, extending through the distribution duct of the fixing base and having one or more slots whose edges are adapted to deviate under the effect of an overpressure within the container which contains the food product, overpressure generated by the user for example via a pressure exerted on the outer wall of the container, in order to allow the flow of this product.

Such a membrane is generally fixed to the base by overmolding the latter on the membrane. After overmoulding, it is still necessary to make one or more cutouts of the flexible membrane to form the slot or slots.

Due to their production in two parts and in different materials, the manufacturing cost of such a capsule is relatively high.

Furthermore, the flexibility of the membrane forming the dispensing valve does not necessarily make it possible to obtain reliable sealing of the capsule in the closed position, nor a clear cut off in the flow of product when the overpressure within of the container.

The present invention aims to remedy these drawbacks.

The invention relates to a closing and dispensing cap for a container for storing a product, in particular a cosmetic product, comprising at least one base for fixing the cap to the container and provided with a product and a product dispensing valve secured to the dispensing duct.

The capsule is made in one piece by molding a synthetic material.

According to a general characteristic, the dispensing valve comprises a beam extending transversely inside the dispensing duct, and at least two shutter flaps secured to the beam and extending on either side of it. this.

According to another general characteristic, the shutters are elastically deformable and movable at least between:

- a closed position of the distribution duct in which the free edge of each closing flap engages in a sealed manner against the distribution duct, and

- an open position of the distribution duct in which the free edge of each shutter is at least partly at a distance from the distribution duct, said shutter extending inside the distribution duct.

"Elastically deformable shutter" means a shutter capable of deforming in a non-permanent manner under the action of an external stress, and tending to resume its shape before deformation after the external stress stops.

The manufacturing cost of the capsule is reduced insofar as the dispensing valve is made in one piece, i.e. in one piece, with the base of the capsule. The molding of the capsule is thus carried out in a single operation. In addition, it is not necessary to provide after molding a recovery of the capsule, for example by cutting, to form the dispensing valve.

In addition, the design of the dispensing valve makes it possible to obtain a good seal in the closed position and a clean cutoff in the flow of product when passing from the open position to the closed position.

This is made possible by the fact of providing, in the closed position, cooperation by contact between the free edges of the closing flaps and the product distribution duct, unlike the previous capsules in which the non-contiguous edges of the or slots in the flexible membrane seal the dispensing valve. In addition, with the capsule of the invention, the flow of product is subdivided into at least two flows, which also promotes a clearer and clearer cut off of this flow.

The shutters can pivot, and in particular flex, around the beam when passing from the closed position to the open position, and vice versa.

Preferably, the closure flaps of the dispensing valve are elastically deformed against the dispensing duct in the closed position.

Thus, the free edge of each shutter exerts a permanent force on the dispensing duct which tends to maintain sealed contact between the duct and the dispensing valve in the closed position. This further promotes obtaining a good seal of the dispensing valve.

In a particular embodiment, the distribution duct is equipped internally with at least one notch extending inwards and forming a seat for the shutters in the closed position.

Such an arrangement makes it possible to ensure the position of the flaps in their configuration for closing the distribution duct.

In the closed position, the shutter flaps can be in abutment against a first bearing face of said notch of the distribution duct which is oriented axially on the side of a front wall of the base from which extends the distribution duct.

Advantageously, the first bearing face of said notch of the distribution duct is axially offset from the side of the front wall of the base relative to the base of each shutter.

In other words, the first bearing face of said notch of the distribution duct is located downstream of the base of each shutter, considering the direction of flow of the product during distribution.

With such a relative axial arrangement, it is ensured that each shutter is elastically deformed against the distribution duct in the closed position.

By "shutter damper base" is meant the portion of the damper that connects to the beam of the dispense valve. The peripheral edge of the shutter can extend from one end to the other of the base of the shutter.

Advantageously, said notch of the distribution duct has a second bearing face, axially opposite the first bearing face, which is spaced axially with respect to the free end of the distribution duct by a distance at least equal to l thickness of the shutters of the distribution valve.

In this embodiment in which the distribution duct is fitted internally with the notch or notches, the tightness of the distribution valve in the closed position is obtained by contact in the radial direction between the free edge of each flap and the bore of the distribution duct, and/or by contact in the axial direction between each flap and the notch or notches.

For example, if at least one of the notches of the distribution duct leaves at least one space or passageway along the bore between it and the beam of the distribution valve, then sealing is obtained thanks to the contact in the direction radial between the free edges of the flaps and the bore of the distribution duct even if the axial contact between the flaps and the notches also participate in this sealing.

Alternatively, if each notch of the distribution duct extends continuously in the circumferential direction from one end to the other of the beam, or even if the notch is annular in shape, then sealing can be obtained exclusively thanks to in contact in the axial direction between the flaps and the notches. However, it remains possible to provide, in addition to this axial contact, a radial contact between the free edges of the flaps and the bore of the distribution duct to further promote obtaining a good seal. In the variant in which the notch is annular in shape, this notch is offset axially, on the side of the front wall of the base or on the opposite side, with respect to the beam of the dispensing valve.

In a particular embodiment, the distribution duct is equipped internally with at least two notches forming seats for the shutters in the closed position. Preferably, these notches are arranged on an axis perpendicular to an axis of elongation of the beam. With such an arrangement, the two notches do not interfere during the pivoting, and in particular during the bending, of the flaps with a zone of these flaps located at the level of the junction with the beam, that is to say in a zone where the distance between the free edge of each flap and the beam is low, and therefore where the rigidity of said high flap.

In another embodiment, the distribution duct may be devoid of notch(s) forming seat(s) for the shutters. In this case, sealing is obtained exclusively by contact in the radial direction between the free edge of each flap and the bore of the distribution duct.

The base of each shutter flap may have a reduced thickness compared to the rest of the thickness of said shutter flap.

This favors the pivoting, and in particular the bending, of the shutters with respect to the beam to which they are connected. This zone of reduced thickness can for example be formed by a groove, throat or gully made on one of the faces, or on both faces, of each closing flap in the vicinity of the beam. Advantageously, the zone of reduced thickness of each flap extends along the beam so that the axis of pivoting, in particular of bending, of this flap is substantially parallel to the beam.

The shutters can also be movable from a molded position in which they are located axially outside the distribution duct with their free edge at a distance from the duct.

In this case, the shutters of the dispensing valve can then adopt at least three configurations: the molding position which corresponds to a configuration before first use, the opening position of the dispensing duct which corresponds to a configuration of product passage, and the closed position of the dispensing duct.

In a particular embodiment, the beam of the dispensing valve extends straight inside the dispensing duct. The rectilinear beam can be arranged along an axis of symmetry of the inner cross section of the distribution duct. This arrangement of the beam makes it possible to increase the life of the capsule mould.

With this particular arrangement of the beam, the shutters are symmetrical with respect to it and of the same shape. In particular and according to a preferred embodiment, in the case of a distribution duct of circular internal cross-section, the beam can extend in the center of the distribution duct, that is to say along a diameter of this circular internal cross-section, the closing flaps being symmetrical with respect to the beam and each having the shape of a half-disc.

Alternatively, the distribution duct has an oval internal cross-section. The beam then advantageously extends along an axis of symmetry of this oval cross-section of the distribution duct, and preferably along the minor axis of the oval cross-section of the distribution duct. In another embodiment, the distribution duct may have a square interior cross-section; the beam can then extend to the center of the distribution duct, i.e. following an axis of symmetry of the square internal cross-section of the distribution duct, the shutters then being symmetrical with respect to the beam and each having a triangle shape in the case where the beam follows a diagonal of the square cross section or a rectangle shape in the case where the beam follows a perpendicular bisector of one of the sides of the square cross section. According to yet another embodiment, the distribution duct may have a polygonal interior cross-section other than square, for example rectangular, hexagonal or other; the beam can then extend in the center of the distribution duct, i.e. following an axis of symmetry of the polygonal internal cross-section of the distribution duct, the shutters being symmetrical with respect to the beam . Alternatively, the straight beam may be radially offset from the center of the distribution duct; in other words, as a variant, the beam can extend along an axis which is not an axis of symmetry of the interior cross-section of the distribution duct, the closing flaps not having in this case any symmetry with respect to beam.

Alternatively, the beam of the dispensing valve can have other shapes than purely rectilinear. The beam can for example have a star shape with three or more branches, or a cross shape, etc. In these two cases, the dispensing valve respectively comprises at least three closing flaps, or four flaps.

The capsule may further comprise a closure cap provided with a stud and articulated on the base while being movable between a closed position in which the stud engages in a sealed manner inside the distribution duct and a open position in which the stud is located outside the distribution duct.

Alternatively or in combination, the capsule can also comprise a sealing cap covering at least the distribution duct of the base. The cover can cover both the distribution duct and the front wall of the base.

In another embodiment, the capsule may be devoid of a closure cap and/or a sealing cap. The dispensing valve can then form the only means of closing off the dispensing duct.

Preferably, the base comprises a skirt for fixing the cap to the container and radially surrounding at least partly the dispensing duct. The fixing skirt can extend axially from the front wall of the base.

The base may include a sealing skirt intended to engage inside a neck of the container and radially surrounding at least partly the dispensing duct. The sealing skirt may extend axially from the front wall of the base.

The invention also relates to a device for packaging and dispensing a product, in particular a cosmetic product, comprising a container for storing the product provided with a neck, and a closure and dispensing cap as defined previously fitted and fixed on said neck.

The present invention will be better understood on studying the detailed description of an embodiment, taken by way of non-limiting example and illustrated by the accompanying drawings, in which:

is a perspective view of a closure and dispensing capsule according to an embodiment of the invention,

is a top view of the capsule of Figure 1,

is a sectional view along line III-III of Figure 2,

is a sectional view along line IV-IV of Figure 2,

is a detail view of Figure 4,

is a view in longitudinal section of a device for packaging a product equipped with the capsule of FIGS. 1 to 4 before first use,

is a view in longitudinal section of the device of FIG. 5 after reversal,

is a longitudinal sectional view of the device of Figures 5 and 6 in use, and

is a longitudinal sectional view of the device of FIGS. 5 to 7 after use.

In Figures 1 and 2 is shown a closure cap, designated by the general reference numeral 10, which is intended to be fixed on a storage container for a product (not shown).

In Figure 1, the capsule 10 is shown in an assumed vertical position and extends along a median central axis 12. The cap 10 is made in a single piece by molding a synthetic material, for example PP, PE, SEBS, TPX, PBT, etc.

The capsule 10 comprises a body or base 14, with axis 12, for attachment to the container and a cover 16 rotatably articulated on the base between a closed position and an open position.

As illustrated more clearly in Figures 3 and 4, the base 14 of the capsule comprises a front wall 18 at the upper end, and an annular distribution duct 20 extending from the front wall 18. The duct 20 is here centered on axis 12. The duct extends axially downward from front wall 18.

As will be described in more detail below, the base 14 of the capsule comprises a distribution valve 22 mounted inside the distribution duct 20 and secured thereto.

The base 14 also comprises an annular internal sealing skirt 24 extending from the front wall 18. The skirt 24 radially surrounds the distribution duct 20 while remaining radially at a distance therefrom. The skirt 24 is designed to engage in a sealed manner inside the neck of the container in the mounted position of the cap.

The base 14 also includes an annular skirt 26 to ensure the assembly and fixing of the capsule on the associated container. For this purpose, the skirt 26 internally comprises a hook (not referenced) for snapping onto the neck of the container. The hook can be continuous or discontinuous in the circumferential direction. As a variant, the skirt 26 can be provided on the inside with another type of fixing means, for example a thread to ensure the fastening of the cap 10 to the container by screwing.

The skirt 26 extends from the front wall 18 and radially surrounds the internal sealing skirt 24 while remaining radially at a distance from the latter. The skirts 24, 26 are centered on the axis 12. An annular space is delimited radially between the skirts 24, 26 inside which engages the neck of the container.

The base 14 further comprises an outer trim skirt 28 axially extending a large-diameter edge of the front wall 18. The outer skirt 28 radially surrounds the skirt 26 while remaining radially at a distance therefrom. The skirt 28 is centered on the axis 12. The skirt 28 here extends axially beyond the skirt 26. In the illustrated embodiment, the skirt 28 has a circular cross section. Alternatively, it could be possible to provide a polygonal section, in particular square, or else oval, etc.

The front wall 18 of the base is delimited in the axial direction by upper and lower faces. The skirts 22, 24 extend axially from the inside face of the end wall.

As shown in particular in Figure 2, the cover 16 of the capsule is rotatably articulated on the base 14 via a hinge 30, the axis of articulation 32 transverse to the axis of the base. The hinge 30 extends from the skirt 28 covering the base and is connected to the cover 16. The hinge 30 is of the film type. The hinge 30 is made here in two parts. Alternatively, the hinge 30 could be made in a single part.

The cover 16 is movable between a closed position of the duct 20 and an open position of said duct. In the closed position, the cover 16 caps the base 14. The cover 16 is provided with a closing stud 34 which engages inside the duct 20 of the base to close it in a sealed manner. in the closed position.

As indicated above, the duct 20 is equipped internally with the distribution valve 22 making it possible to authorize or not the passage of product inside the said duct.

As illustrated in particular in Figures 2, 4 and 5, the valve 22 comprises a fixed beam 36 and two shutters 38 movable shutter and integral with the beam.

The beam 36 extends transversely relative to the duct 20 inside the latter. The beam 36 extends from the bore of the duct 20. At each end the beam 36 is connected to said bore. The beam 36 is here centered inside the duct 20. In the illustrated embodiment, the beam 36 has a rectilinear shape. In the area of the beam 36, the duct 20 is subdivided into two parts.

The shutter flaps 38 extend laterally on either side of the beam 36. Each flap 38 comprises a root or base which is connected to the beam and a peripheral free edge of circular shape. The free edge of each flap 38 extends in the circumferential direction from one end to the other of the beam 36. In the embodiment illustrated, each flap 38 has a half-disc shape.

As will be described in more detail below, the shutter flaps 38 are elastically deformable and movable to obtain in particular their passage from a closed position of the distribution conduit 20 to an open position, and vice versa.

In the illustrated embodiment, the deformable nature of the flaps 38 is obtained by their dimensioning, in this case their thinness. As an indication, the thickness of each flap 38 can for example be between 0.1 mm and 0.4 mm. The thickness of the beam 36 can itself be between 0.4 mm and 2 mm.

In FIGS. 2 to 5, shutter flaps 38 are shown in a molding position which corresponds to a configuration before first use.

In this position, the flaps 38 are located axially below the duct 20 for distribution. The free edge of each flap 38 remains at a distance from the lower end of the conduit 20. The axial distance separating the lower end of the conduit 20 from the free edge of each flap 38 may for example be between 0.1 mm and 1, 5mm. In the illustrated embodiment, the flaps 38 are curved axially downwards. Alternatively, in this molding position, the flaps 38 could extend recline while being oriented downwards, i.e. extend inclined downwards with respect to the axis 12.

As will also be described in more detail below, the distribution duct 20 of the base internally comprises support notches 40 provided to cooperate with the closing flaps 38 of the distribution valve in the closed position. of said conduit 20.

The notches 40 are formed on the bore of the duct 20. The notches 40 extend radially inward. The notches 40 are arranged on either side of the beam 36. The notches 40 are arranged in the radial plane perpendicular to the axis 12 containing the beam 36. The notches 40 are located near the lower free end of the conduit 20 distribution. An axial space remains between the free end of conduit 20 and the face of each notch 40 oriented axially on the side of this free end. Each notch is delimited in the axial direction by this face and by an opposite face oriented axially on the side of the front wall 18 of the base. In the molding position, the flaps 38 are located axially below the notches 40.

In the illustrated embodiment, the notches 40 are two in number and diametrically opposed. As an indication, the notches 40 may have a circumferential dimension comprised between 30° and 60°, and for example equal to 45°. The notches 40 are advantageously arranged on an axis which is perpendicular to the axis of elongation of the beam 36. Alternatively, it could be possible to provide that each notch 40 is connected at each circumferential end to the beam 36. In another embodiment, it could be possible to provide a single notch of annular shape with an axial arrangement of this offset notch, on the side of the front wall 18 of the base or on the opposite side, with respect to the beam 36.

In Figure 6 is shown a product packaging device 50 which comprises a storage container 52 and which is equipped with the capsule 10.

The container 52 is intended to store a product, for example a cosmetic product, advantageously in fluid or viscous form. In the figures, the product is not shown. The container 52 is preferably of the type with a deformable wall, so that pressure exerted by the user on the outer wall of the container causes an overpressure within it. As a variant, the container could be provided with a device for generating an overpressure within it, such as a mobile piston device inside the container operable by means of a push button acting directly on the piston or a threaded rod cooperating with an internal thread of the piston.

The container 52 extends along a longitudinal geometric X-X' axis. The container 52 internally delimits an internal volume 54 filled with the product. The container 12 comprises an end forming a bottom (not visible) and an open opposite end forming a neck 56. The capsule 10, coaxial with the axis X-X', is mounted on the neck 56. For this purpose, the neck 56 is externally provided with a latching hook (not referenced) on which is hung the hook of the skirt 26 of the base of the capsule.

In Figure 6, the device 50 is shown in a position with the capsule 10 disposed above the container 52 and before first use of the capsule.

To obtain the distribution of the product which is contained in the container 52 from this position illustrated in FIG. 6, the user can proceed as follows.

First of all, the user turns over the device 50 so that the capsule 10 is arranged below the container 52 as shown in FIG. 7. In this position, the product contained in the container 52 presses on the side of each closure flap 38 of the capsule dispensing valve which is oriented towards the container 52, which advantageously causes the flaps 38 to move axially bearing against the notches 40 of the dispensing duct as illustrated in Figure 7. As a variant or in addition, in the position illustrated in Figure 7, the flaps 38 advantageously bear axially against the front face of the distribution duct 20 defining its free end. The flaps 38 are deformed under the pressure of the product contained in the container 52.

The flaps 38 bear axially against the face of each notch 40 which is located axially on the side of the container 52, i.e. on the side opposite the front wall 18 of the base. The free edge of each flap 38 bears radially against the bore of the duct 20 for distribution. Thus, each flap 38 engages in a sealed manner inside the duct 20. This is made possible insofar as the axial space between the free end of the duct 20 and the face of each notch 40 which is oriented from the side of this free end is at least equal to the thickness of the flaps 38. The free edge of each flap 38 is in contact against the bore of the duct 20 along a peripheral line which is continuous in the circumferential direction and which extends from one end to the other of the beam 36.

Thus, a good sealing of the distribution valve 22 is obtained in this position of the flaps 38, and an undesired flow of product out of the conduit 20 is avoided independently of the position of the cover 16.

Then, to obtain the distribution of the product, the user begins by moving the cover 16 from its closed position to its open position, then presses on the deformable wall of the container 52.

Under the effect of the overpressure thus created inside the container 52, the closure flaps 38 of the capsule dispensing valve pivot around the beam 36, cross the notches 40 and extend into the duct 20 distribution while remaining radially away from it as shown in Figure 8. The opening of the conduit 20 is thus obtained by deformation of the flaps 38 under the effect of the pressure exerted by the product contained in the container 52 which is itself caused by the overpressure within the container 52.

In this position of opening or passage of the product, a space is made between at least a part of the free edge of each flap 38 and the bore of the duct 20. In the open position of the duct 20, the free edges of the flaps 38 are located inside the duct 20 axially between the notches 40 and the front wall 18 of the base. The flaps 38 are axially at a distance from the notches 40 and radially at a distance from the bore of the duct 20.

In the open position of the flaps 38, the flow of product takes place between the free edge of each flap and the duct 20. The product dispensed through the duct 20 can be collected by the user at the level of the wall front 18 of the base on which the duct opens.

Once the user stops compressing the deformable wall of the container 52 causing the overpressure to stop within the container 52, the flaps 38 come by elastic return to bear against the notches 40 of the duct axially on the side of the front wall 18 of the base as shown in Figure 9. This corresponds to the closed position of the conduit 20 by the flaps 38. The flaps 38 bear axially against the face of each notch 40 which is located axially on the side of the front wall 18 of the base.

The notches 40 of the duct prevent the axial return of the flaps 38 to their initial rest position which corresponds to the position before first use illustrated in particular in FIGS. 5 and 6. Thus, in their closed position, the flaps are elastically deformed against the duct 20.

In the closed position of the duct 20 by the flaps 38 illustrated in FIG. 9, the free edge of each flap 38 bears radially against the bore of the distribution duct 20. Each flap 38 thus engages in a sealed manner inside the duct 20. The free edge of each flap 38 is in contact against the bore of the duct 20 along a peripheral line which is continuous in the circumferential direction and which extends from one end to the other of the beam 36. Thus, even in the absence of the notches 40, correct sealing of the duct 20 is ensured by the radial contact between the free edge of each flap 38 and the bore of conduit 20.

In the closed position of the conduit 20 by the flaps 38, a good sealing of the valve 22 of distribution is thus obtained.

In addition, as indicated above, in the closed position of the duct 20, the flaps are elastically deformed against it. Thus, the free edges of the flaps each exert a permanent force on the notches 40 and on the bore of the duct 20. This further promotes obtaining good sealing of the valve 22 of distribution.

The invention has been illustrated in the figures on the basis of a closure cap equipped with a fixing base on the container having a particular design with in particular the presence of the skirts 26, 28. The invention is not limited to a particular shape of the fixing base of the capsule. As a variant, it is possible to provide other designs of the fixing base. For example, it is possible to provide a base intended to be fixed on a receptacle of the bag or deformable pouch type as illustrated in the Indian patent application filed under number 201611043495.

Thanks to the invention, there is a capsule equipped with a dispensing valve allowing the flow of the product housed in the container under the effect of an overpressure generated within it and clearly stopping this flow of product, in the absence of this overpressure, by sealed contact of the free edges of the shutters inside the distribution duct. The dispensing valve also provides a stop-drip or anti-drip function.

Claims (15)

Closure and dispensing cap for a container for storing a product, in particular a cosmetic product, comprising at least one base (14) for fixing the cap to the container and provided with a dispensing duct (20) product and a product dispensing valve (22) integral with the dispensing duct (20), characterized in that the capsule is produced in a single piece by molding a synthetic material, and in that the dispensing valve (22) comprises a beam (36) extending transversely inside the distribution duct (20), and at least two shutters (38) secured to the beam and extending on either side thereof, the shutters (38) being elastically deformable and movable at least between:
- a closed position of the distribution duct (20) in which the free edge of each closing flap (38) engages in a sealed manner against the distribution duct, and
- an open position of the distribution duct (20) in which the free edge of each shutter (38) is at least partly at a distance from the distribution duct, said shutter extending to the inside the distribution duct. Capsule according to Claim 1, in which the closing flaps (38) of the dispensing valve pivot, and in particular flex, around the beam (36) when passing from the closed position to the open position, and vice versa. Capsule according to Claim 1 or 2, in which the closure flaps (38) of the dispensing valve are elastically deformed against the dispensing duct (30) in the closed position. Capsule according to any one of the preceding claims, in which the distribution duct (20) is equipped on the inside with at least one notch (40) extending inwards and forming a seat for the shutters (38) in the closed position, and preferably by at least two notches (40) diametrically opposed, in particular arranged on an axis perpendicular to an axis of elongation of the beam. Capsule according to Claim 4, in which, in the closed position, the closure flaps (38) of the dispensing valve abut against a first bearing surface of the said notch (40) of the dispensing duct which is oriented axially on the side of a front wall (18) of the base from which the distribution duct (20) extends. Cap according to Claim 5, in which the first bearing face of the said notch (40) of the distribution duct is axially offset from the side of the front wall (18) of the base relative to the base of each shutter (38). Capsule according to Claim 4 or 5, in which the said notch (40) of the distribution duct has a second bearing face, axially opposite the first bearing face, which is spaced axially with respect to the free end of the duct. dispensing valve (20) by a distance at least equal to the thickness of the closing flaps (38) of the dispensing valve. Capsule according to any one of the preceding claims, in which the closure flaps (38) of the dispensing valve are also movable from a molding position in which the flaps are located axially outside the dispensing duct (20) with their free edge away from the duct. Capsule according to any one of the preceding claims, in which the base of each shutter (38) has a reduced thickness compared to the rest of the thickness of said shutter. Capsule according to any one of the preceding claims, in which the beam (26) of the dispensing valve extends straight inside the dispensing duct (20), the shutters (38) each having a half-disc shape. Cap according to any one of the preceding claims, further comprising a closure cap (16) provided with a stud (34) and articulated on the base (14) while being movable between a closed position in which the stud (34) engages in leaktight manner inside the distribution duct (20) and an open position in which the stud (34) is located outside the distribution duct. Capsule according to any one of the preceding claims, further comprising a sealing cap covering at least the distribution duct (20) of the base. Cap according to any one of the preceding claims, in which the base (14) comprises a skirt (26) for fixing the cap to the container and which radially surrounds at least partly the dispensing duct (20). Cap according to any one of the preceding claims, in which the base (14) comprises a sealing skirt (24) intended to engage inside a neck of the container and which surrounds radially at least part the distribution duct (20). Device for packaging and dispensing a product, in particular a cosmetic product, comprising a container for storing the product provided with a neck, and a closing and dispensing capsule according to any one of the preceding claims mounted and fixed on said collar.