EP2919613A1

EP2919613A1 - Head for applying a cosmetic and related device, method, and process

Info

Publication number: EP2919613A1
Application number: EP13789335.0A
Authority: EP
Inventors: Christian Revenu; Aymeric LAOUT; Oussouby SIMPARA; Cécile EURIPPINI
Original assignee: LOreal SA
Current assignee: LOreal SA
Priority date: 2012-11-13
Filing date: 2013-11-12
Publication date: 2015-09-23
Anticipated expiration: 2033-11-12
Also published as: KR20150084016A; ES2753809T3; FR2997829B1; FR2997829A1; WO2014076082A1; KR102177558B1; EP2919613B1

Abstract

The invention relates to a head (14) that includes : a sleeve (30) for receiving a rotatable member (32) for applying a substance; and an inner member (70) for supporting the rotatable member (32), located in an inner channel (31) of the sleeve (30), upstream from a downstream opening (56), the inner member (70) being axially movable between a downstream position, for maintaining the rotatable member (32) in a configuration for sealing the downstream opening, and an upstream position, for releasing the rotatable member (32). The head comprises a member (72) for resiliently biasing the inner supporting member (70) toward the downstream position thereof. The resilient biasing member (72) transversely connects the inner member (70) to the side wall (50) in the inner channel (31).

Description

Application head of a cosmetic product, device, method and method thereof

The present invention relates to an application head of a cosmetic product on a body surface of a user.

This head is intended for dispensing and applying a fluid cosmetic product contained in a container.

The cosmetic product is for example a liquid, especially a low viscosity liquid.

The head is intended to be mounted on a container containing the cosmetic product and to deliver the cosmetic product contained sealingly in the container on a body surface of the user, preferably on a keratinous surface such as the hair.

The cosmetic product is for example a care product for keratinous fibers. More generally, the cosmetic product may be a product for coloring keratin fibers, a cleaning product, a solar product or a make-up product.

For the purposes of the present invention, the term "cosmetic product" advantageously means a product as defined in Regulation (EC) No. 1222/2009 of the European Parliament and of the Council, dated November 30, 2009, relating to cosmetic products.

To ensure an effective distribution of the cosmetic product and possibly a simultaneous massage of the body surface receiving the cosmetic product, the head comprises a rotary product application member received in the support sleeve. The rotary member is for example formed by a ball or a roller.

During product distribution, the cosmetic product flows between the side wall and the rotatable member and is deposited on the body surface.

At rest, it is necessary to seal between the side wall and the rotary member. US 3,166,779 and DE 41 09 107 describe dispensing heads providing such a seal.

In order to improve the effectiveness of the seal, US Pat. No. 5,810,495 or GB 1,515,078 describe heads of the aforementioned type comprising an internal support member for the rotary member and a plurality of propellant elastic biasing members, which are clean. to urge the rotary member disposed in abutment on the internal member.

This elastic biasing keeps the rotating member in contact with a lip formed at the free end of the side wall of the sleeve, which closes the downstream opening.

Heads described in US 5,810,495 or GB 1,515,078 are not entirely satisfactory. Indeed, they are difficult to manufacture, especially by molding, which increases their cost. In addition, the sealing at the lip between the side wall and the rotary member is only guaranteed when manufacturing tolerances on the lip are very low.

An object of the invention is to obtain a product application head which provides a very effective seal when not in use, while being made at low cost.

For this purpose, the subject of the invention is a head of the aforementioned type, comprising:

- A receiving sleeve of a rotary product application member, the sleeve having a side wall defining an inner passage opening axially along a product distribution axis through a downstream product dispensing opening;

an internal support member for the rotary member disposed in the internal passage upstream of the downstream opening, the internal member being axially movable between a downstream position for holding the rotary member in a closure configuration; the downstream opening and an upstream position of release of the rotary member;

at least one elastic biasing member of the internal support member towards its downstream position;

wherein the or each resilient biasing member transversely connects the inner member to the sidewall in the inner passage.

The head according to the invention may comprise one or more of the following characteristics, taken in isolation or in any technically possible combination:

it comprises a plurality of resilient biasing members angularly spaced around the distribution axis, each resilient biasing member transversely connecting the inner support member to the side wall of the sleeve in the internal passage;

the or each elastic biasing member has a curved shape between the lateral wall and the internal member;

the internal member extends in the center of the internal passage, transversely away from the lateral wall;

- The inner member, the or each resilient biasing member and the side wall are integral, the inner member defining a material injection point;

- The internal member defines a downstream bowl disposed opposite the downstream opening; it comprises at least one stop for blocking the axial displacement of the rotary member projecting into the internal passage from the side wall;

the blocking stop is formed by an axial fin;

- It has an outer skirt intended to engage around a container of cosmetic product, the outer skirt extending upstream in the extension of the receiving sleeve; - It has an inner skirt for insertion into a container of cosmetic product, the inner skirt defining an upstream product flow duct opening downstream in the inner passage;

it comprises a rotary product-application member mounted in the receiving sleeve resting on the internal member,

the rotatable member being movably mounted together with the inner member between a closure configuration of the inner passage, wherein the rotatable member partially projects out of the support sleeve to close downstream the inner passage, and a configuration product dispensing system, wherein the rotary member partially releases the internal passage downstream to allow product flow through the downstream opening between the rotatable member and the side wall.

The invention also relates to a device for packaging and dispensing a cosmetic product, comprising:

a head as described above, the head comprising a rotary product-application member mounted in the receiving sleeve resting on the internal member,

the rotatable member being movably mounted together with the inner member between a closure configuration of the inner passage, wherein the rotatable member partially projects out of the support sleeve to close downstream the inner passage, and a configuration product dispensing system, wherein the rotary member partially releases the internal passage downstream to allow product flow through the downstream opening between the rotatable member and the side wall;

- A container for receiving cosmetic product, the head being mounted on the container.

The invention also relates to a method for manufacturing a head as described above, characterized in that it comprises the following steps:

supplying a mold defining a first cavity for forming the internal support member, a second cavity for forming the side wall, and at least one intermediate cavity for forming an elastic biasing member, the or each cavity intermediate connecting transversely the first cavity and the second cavity;

- Injection into the first cavity of a fluid material for forming, after solidification, the inner member, the side wall, and the or each resilient biasing member;

successively filling the or each intermediate cavity, then the second cavity with the material injected into the first cavity;

- At least partial solidification of the fluid material to form the head. The invention also relates to a method for applying a cosmetic product to a body surface of a user, comprising the following steps:

- Provision of a device as described above;

- Applying the rotating member on a body surface of a user;

- joint displacement of the rotary member

and the inner support member to the dispensing configuration, against the resilient biasing member;

- Distribution of cosmetic product around the rotary member, by product flow between the rotary member and the side wall.

The method according to the invention may comprise one or more of the following characteristics, taken separately or in any technically possible combination:

it comprises, after the dispensing step, the elastic biasing of the internal support member towards its downstream position by the or each resilient biasing member, to push the rotary member back into its closure configuration.

The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which:

- Figure 1 is a perspective view of three-quarter face of a first packaging and dispensing device comprising an application head according to the invention;

- Figure 2 is a view, taken in section along a median axial plane, of the device of Figure 1;

FIG. 3 is a view from above of the application head of FIG. 1, without a rotary application member;

FIG. 4 is a view of a detail of an elastic biasing member of the head of FIG. 1;

FIG. 5 is a view of a cross section of the member of FIG. 4;

- Figure 6 is a view similar to Figure 2 of the downstream end of the head of Figure 2, in a closed configuration of the downstream opening;

- Figure 7 is a view similar to Figure 6, in a cosmetic product dispensing configuration; and

FIG. 8 is a schematic view, taken in section along a median axial plane, of a mold for producing the head of FIG. 1.

In what follows, the terms "upstream" and "downstream" refer to the normal direction of flow of a cosmetic product in the device according to the invention. The terms "outside" and "inside" refer to a container containing the cosmetic product.

A first device 10 for packaging and dispensing a cosmetic product according to the invention is illustrated in FIGS. 1 to 2.

The cosmetic product is for example a liquid, especially a low viscosity liquid such as alcohol for example. Nevertheless, the cosmetic product used with the packaging device according to the invention can be of the low viscosity shampoo or gel type.

The cosmetic product is, for example, a care product for keratinous fibers, such as a product that prevents the keratin fibers from falling. More generally, the cosmetic product may be a product for coloring keratin fibers, a cleaning product, a solar product or a make-up product.

The device 10 comprises a container 12 containing the cosmetic product, and a cosmetic product application head 14, mounted on the container 12.

In this example, the head 14 is removably and reversibly mounted on the container 12. The container 12 then constitutes a cosmetic product refill that can be replaced when the cosmetic product contained in the container 12 is exhausted.

As illustrated by FIGS. 1 and 2, the container 12 has a hollow wall 16 having a neck 18 on which the head 14 is mounted.

The hollow wall 16 defines an interior volume containing cosmetic product.

The inner volume 20 opens with a downstream opening 22 defined by the neck 18.

The hollow wall 16 is for example made of glass, metal or plastic Before mounting the head 14 on the container 12, the downstream opening 22 is advantageously closed by a cover (not shown), which can be removed by the user of the device or which can be pierced directly by the head 14.

With reference to FIGS. 1 to 7, the head 14 comprises a support sleeve 30 defining an internal product circulation passage 31 extending along an axis A-A 'of product distribution. The head 14 comprises a rotatable member 32, mounted axially movable in the support sleeve 30, between a closed configuration of the inner passage 31 and a product distribution configuration.

The head 14 further comprises a resilient biasing assembly 34 of the rotary member 32 towards the closure configuration, and an assembly 36 for axially locking the rotary member 32 upstream.

The head 14 also comprises an outer skirt 38 for mounting on the container 12 and an attachment assembly 40 on the container 12. The head 14 comprises advantageously an inner skirt 42 for guiding the cosmetic product out of the container 12, inserted at least partially in the container 12.

In this example, the support sleeve 30, the biasing assembly 34, the axial locking assembly 36, the outer skirt 38, the fastening assembly 40, and the inner skirt 42 are all made of a single while being made of material, for example by molding, and in particular by injection molding.

These elements are for example made of a thermoplastic material.

As illustrated in FIG. 2, the sleeve 30 has a tubular lateral wall 50 of axis A-A 'internally defining the passage 31.

The side wall 50 has, at its downstream end, a lip 52 converging towards the axis A-A 'to a free edge 54 intended here to be applied to the rotary member 32.

The free edge 54 of the lip 52 defines a downstream opening 56 through which the passage 31 opens.

The passage 31 thus has an upstream region 58 of substantially constant cross-section, and a downstream region 60 of decreasing cross-section when moving towards the downstream opening 56.

The minimum cross section of the upstream region 58 is greater than the maximum cross section of the rotary member 32. The maximum cross section of the downstream region 60 is smaller than the maximum cross section of the rotary member 32.

The support sleeve 30 has, externally, or in combination with the outer skirt 38, a recess 61 for gripping the head 14 between the fingers of a user. The recess 61 promotes the gripping of the head 14 for application to a body surface of a user.

In this example, the rotary member 32 is constituted by a ball, rotatably mounted in the sleeve around a plurality of axes of rotation. Alternatively (not shown), the rotatable member 32 is constituted by a roller rotatably mounted about a single axis of rotation, preferably perpendicular to the axis A-A '.

Rotating member 32 is advantageously formed of metal, a plastic material, or a combination of metal and plastic.

As mentioned above, the rotary member 32 is mounted to be movable in translation in the support sleeve 30, along the axis A-A ', between the shutter configuration and the dispensing configuration.

In the closure configuration, visible in FIG. 6, the rotary member 32 projects partly outside the support sleeve 30 through the downstream opening 56. It is applied in contact with the lip 52 over the entire periphery of the lip 52 and it closes to downstream the inner passage 31 and the downstream opening 56. The passage of cosmetic product from the inside of the passage 31 to the outside is thus prevented.

In the dispensing configuration, visible in FIG. 7, the rotary member 32 has been partially retracted into the support sleeve 30. It partially disengages the downstream opening 56. The passage of cosmetic product from the interior passage 31 to the outside is then possible in the intermediate space 62 delimited around the rotary member 32, between the rotary member 32 and the side wall 50.

The intermediate space 62 further has a downstream region of increasing glass section the downstream opening 56, to allow unobstructed flow of the cosmetic product.

In the dispensing configuration, the rotatable member 32 is further rotatable about at least one axis perpendicular to the axis A-A ', advantageously around a plurality of axes perpendicular to the axis A- AT'.

According to the invention, the biasing assembly 34 comprises an internal member 70 for supporting the rotary member 32, disposed in the center of the passage 31 along the axis A-A ', and at least one member 72 of elastic biasing the internal member 70, connecting the side wall 50 to the internal member 70.

The internal support member 70 extends along the axis A-A ', upstream of the downstream opening 56. It is disposed completely away from the inner surface of the support sleeve 30. It presents a maximum cross section less than 50% of the minimum cross section of the passage 31 opposite the member 70.

In this example, the internal support member 70 is formed by a substantially cylindrical body 74. The internal support member 70 delimits a downstream trough 76, of curvature substantially complementary to the outer curvature of the rotary member 32. The bowl downstream 76 emerges opposite the downstream opening 56.

The rotary member 32 is placed in abutment on the internal support member 70, advantageously being partially received in the downstream cup 76. It is not fixed on the internal member 70.

The internal support member 70 is movable in translation along the axis AA 'together with the rotatable member 32 between a downstream position for holding the rotary member 32 in the shutter configuration and an upstream release position. the rotary member 32 allowing the passage of the rotary member 32 in the dispensing configuration.

In the example illustrated in Figure 3, the elastic biasing assembly 34 comprises a plurality of elastic biasing members 72 spaced angularly from each other. The number of elastic biasing members 72 is for example between 1 and 5. Preferably, this number is between 2 and 4, for example 3 as in FIG.

Preferably, the elastic biasing members 72 are angularly distributed around the axis A-A '.

Each elastic biasing member 72 extends transversely between an inner peripheral surface of the side wall 50 of the sleeve 30, directed towards the axis AA 'and an outer peripheral surface of the internal member 70, directed away from the axis A-A '.

In this example, each resilient biasing member 72 has a curved shape, for example a helix section shape.

With reference to FIG. 4, each resilient biasing member 72 comprises an arm 80 having an outer end 82 integral with the support sleeve 30 and an inner end 84 integral with the internal member 70.

In this example, the outer end 82 is located axially upstream of the inner end 84. Furthermore, the outer end 82 is angularly offset from the inner end 84 about the axis A-A ', taking into account of the curved shape of the arm 80.

In the example shown in FIG. 3, the angular offset of each outer end 82 with respect to the inner end 84 is in the same direction around the axis A-A 'for all the arms 80.

As illustrated in FIG. 5, each arm 80 here has a non-polygonal cross section taken perpendicularly to a local axis of the arm 80. The cross section of the arm 80 flares out at each end 82, 84.

Each arm 80 has a maximum width less than its length, preferably less than at least twice its length.

Each elastic biasing member 72 is at rest in the downstream position of the internal member 70. It is elastically deformable during the passage of the internal member 70 from its downstream position to its upstream position, to exert an elastic biasing force on the internal member 70, tending to bring the inner member 70 to its downstream position.

The axial locking assembly 36 comprises at least one axial stop 90 for limiting the travel of the rotary member 32 upstream along the axis A-A '.

In this example, the axial locking assembly 36 has a plurality of axial stops 90. Each axial stop 90 is angularly disposed about the axis A-A 'between a pair of adjacent arms 80. Each axial abutment 90 projects radially towards the axis AA 'from the inner surface of the support sleeve 30. Advantageously, each axial abutment 90 is located axially facing the internal member 70, being located radially at the deviation from internal organ 70.

In the example shown in Figures 2 and 3, each stop 90 is formed by an axial vane, of thickness less than its maximum height, taken along the axis A-A '. Its radial extent is smaller than that of the adjacent members 72, advantageously less than 50% of the radial extent of the adjacent arms.

Thus, in section in a transverse plane passing through the internal member 70, the maximum section occupied by each fin is less than 10% of the maximum section of the passage 21.

Each axial abutment 90 thus has a small bulk, allowing the effective distribution of cosmetic product through the passage 31.

Each axial abutment 90 is fixed axially with respect to the sleeve 30. It has a fixed downstream surface 92 for blocking the rotary member 32, advantageously inclined upstream by moving towards the axis AA 'from the inner surface of the side wall 50.

In the dispensing configuration, the rotary member 32 abuts against the downstream surface 92 of each axial abutment 90, which prevents the upstream displacement of the rotatable member 32 beyond this configuration.

The axial position of the downstream surface 92 is advantageously chosen to prevent the deformation of each resilient biasing member 72 beyond the elastic domain. This preserves the elastic properties of each member 72 and ensures that the seal provided by the rotatable member 32 in contact with the side wall 50, continues over time.

The outer skirt 38 extends the support sleeve 30 upstream. It has an upstream region 94 of increasing cross section and a substantially tubular downstream region 96 of substantially constant cross section. It delimits an interior space 98 for receiving the neck 18 of the container 12, which opens through an upstream axial opening 100.

The fastening assembly 94 comprises at least one axial locking projection 102 of the container 12 and a ratchet relief 104 intended to engage the receptacle 12 under the neck 18.

Each locking projection 102 extends in the intermediate space between the inner skirt 42 and the outer skirt 38. The inner skirt 42 extends in the upstream axial extension of the support sleeve 30, in the outer skirt 38. It has a length, taken along the axis A-A 'less than the length of the outer skirt 38.

In this example, it has a tubular shape of substantially constant section.

The skirt 42 delimits internally a guide duct 1 opening downstream in the internal passage 31, and intended to open upstream in the internal volume 20 of the container 12 when the head 14 is mounted on the container 12.

As stated above, at least the lateral wall 50 of the support sleeve 30 and the biasing assembly 34 are made in one piece and are integrally formed by injecting material into a mold 120 diagrammatically illustrated in FIG.

Advantageously, the support sleeve 30, the biasing assembly 34, the axial locking assembly 36, the outer skirt 38, the fastening assembly 40, and the inner skirt 42 are all made in one piece in one piece. having come from material in the same mold 120.

For this purpose, the mold 120 comprises a first cavity 122 for forming the internal member 70, a second cavity 124 for forming at least the lateral wall 50, and, for each elastic biasing member 72, an intermediate cavity 126 connecting the first cavity 122 to the second cavity 124.

The mold 120 defines a central supply channel 128, which opens into the first cavity 122 for supplying clean fluid material to solidify, the first cavity 122, then successively, each intermediate cavity 126 and the second cavity 124.

The mold 120 is thus devoid of a supply channel opening directly into the second cavity 124 and / or in each intermediate cavity 126.

To form the head 14, the fluid material capable of solidifying is introduced into the mold 120 through the channel 128. It enters the first cavity 122 and fills the cavity 122 to form the internal member 70. Moreover, the material in excess introduced through the channel 128 passes through each intermediate cavity 126 to feed the second cavity 124 and thereby form each resilient biasing member 72 and the side wall 50.

The material injected into the mold 120 thus distributes homogeneously in the second cavity 124, especially when a plurality of intermediate cavities 126 angularly distributed around the first cavity 122 are present. This improves the distribution of material in the second cavity 124 and thus the quality of manufacture of the side wall 50 by avoiding the ovalization of the lip 52.

An injection point 130 is thus present on the internal member 70 in the bowl 76 after solidification of the material.

The head 14 thus formed is then extracted from the mold 120. The rotary member 32 is then forcefully introduced into the support sleeve 30 through the downstream opening 56.

The operation of the first device 10 will now be described.

Initially, the head 14 and the reservoir 12 are advantageously provided separately. The downstream opening 22 of the reservoir 12 is closed, for example by a removable or frangible cap.

When the user wishes to mount the head 14 on the tank 12, it releases the downstream opening 22 of the container 12, in particular by releasing the lid.

Then, the user engages the head 14 around the neck 18 of the reservoir 12. To this end, he introduces the neck 18 into the outer skirt 38 through the upstream opening 98. He moves the head 14 towards the reservoir 12 to introduce the internal skirt 42 in the inner volume 20 of the reservoir through the downstream opening 22, until the attachment assembly 40 engages the neck 18. The inner skirt 42 is forced into the opening downstream 22 of the reservoir 12, thereby sealing between the head 14 and the reservoir 12 during use of the device 10. Alternatively, the head 14 can be screwed or clipped onto the reservoir 12.

This being done, each elastic biasing member 72 maintains the inner member 70 in its downstream position, to push the rotary member 32 into its closed configuration.

The rotary member 32 then bears against the lip 52 of the side wall 50 in at least one circumference about the axis A-A ', which closes downstream the inner passage 31, and in particular the intermediate space 62 located between the side wall 50 and the rotatable member 32.

The rotary member 32 is then located axially away from each stop 90, downstream thereof.

The cosmetic product contained in the container 12 is unfit to flow out of the head 14. The device 10 thus formed can be stored and / or transported with a very limited risk of product leakage.

This risk is even lower than by manufacturing, the quality of the sealing lip 52 and its low ovality greatly limit any sealing defects. When the user wishes to apply cosmetic product to a body surface, he grasps the head 14 between his fingers, for example at the recess 61.

Then, the user directs the rotary member 32 towards the body surface and applies this member 32 against the body surface.

During this application, the rotary member 32 moves axially upstream with respect to the lateral wall 50, against the biasing force generated by each resilient biasing member 72.

The axial displacement of the rotary member 32 causes the joint movement of the internal member 70 and the elastic deformation of each biasing member 72.

This displacement is possible until the rotary member 32 comes into contact with at least one stop 90. The axial stroke of the rotatable member 32 being limited, the deformation of each resilient biasing member 72 is controlled, for avoid going beyond the elastic domain.

As illustrated in FIG. 7, the intermediate space 62 between the rotary member 32 and the side wall 50 is then open, and opens downstream into the partially open downstream opening 56.

The cosmetic product is then able to flow from the internal volume 20, through the conduit 1 10 provided in the inner skirt 42, then successively through the internal passage 31, between the stops 90 and in the intermediate space 62 until at the downstream opening 56.

The flow of the cosmetic product is effected with a regulated flow rate proportional to the force applied by the user.

This product is deposited on the body surface. Simultaneously, the user can rotate the rotating member 32 to produce a massage of the body surface, promoting the application of the cosmetic product.

When the user has finished applying the product, he moves the rotatable member 32 away from the body surface. Each elastic biasing member 72 then pushes the internal member 70 downstream and brings the rotary member 32 together in its shutter configuration, spontaneously and without user intervention.

The head 14 according to the invention is therefore particularly easy to use and guarantees an effective seal when not in use.

Advantageously, if the cosmetic product contained in the interior volume 20 of the reservoir 12 is exhausted, or if the user wishes to use another cosmetic product contained in another reservoir 12, the user can disengage the head 14 away from the reservoir 12 and reassemble it on another tank 12.

Claims

1. - Head (14) for applying a cosmetic product to a body surface of a user, comprising:

- a sleeve (30) for receiving a rotational member (32) product application, the sleeve (30) having a side wall (50) defining an internal passage (31) opening axially along an axis ( Α-Α ') of product distribution through a downstream product distribution opening (56);

an internal member (70) for supporting the rotary member (32), disposed in the internal passage (31) upstream of the downstream opening (56), the internal member (70) being axially movable between a position downstream holding the rotating member (32) in a closed configuration of the downstream opening and an upstream position of release of the rotary member (32);

at least one elastic biasing member (72) for the internal support member (70) towards its downstream position;

wherein the or each resilient biasing member (72) transversely connects the inner member (70) to the sidewall (50) in the inner passage (31).

2. - Head (14) according to claim 1, characterized in that it comprises a plurality of elastic biasing members (72) spaced angularly about the distribution axis (Α-Α '), each biasing member elastic member (72) transversely connecting the inner support member (70) to the sleeve side wall (50) in the inner passage (31).

3. - Head (14) according to one of claims 1 or 2, characterized in that the or each resilient biasing member (72) has a curved shape between the side wall (50) and the inner member (70) .

4. - Head (14) according to any one of the preceding claims, characterized in that the inner member (70) extends in the center of the internal passage (31), spaced transversely of the side wall (50). ).

5. Head (14) according to any one of the preceding claims, characterized in that the inner member (70), the or each resilient biasing member (72) and the side wall (50) are integral, the internal member (70) defining a point (132) for injection of material.

6. Head (14) according to any one of the preceding claims, characterized in that the inner member (70) defines a downstream bowl (76) disposed opposite the downstream opening (56).

7. Head (14) according to any one of the preceding claims, characterized in that it comprises at least one stop (90) for blocking the axial displacement of the rotary member (32) projecting into the internal passage ( 31) from the side wall (50).

8. Head (14) according to claim 7, characterized in that the blocking stop

(90) is formed by an axial fin.

9. - Head (14) according to any one of the preceding claims, characterized in that it comprises an outer skirt (38) for engaging around a container (12) of cosmetic product, the outer skirt ( 38) extending upstream in the extension of the receiving sleeve (30).

10. - Head (14) according to claim 9, characterized in that it comprises an inner skirt (42) for insertion into a container (12) of cosmetic product, the inner skirt (42) defining a conduit upstream (1 10) of product flow opening downstream in the inner passage (31).

1 1 .- Head (14) according to any one of the preceding claims, characterized in that it comprises a rotary member (32) for product application, mounted in the receiving sleeve (30) bearing on the internal organ (70),

the rotatable member (32) being movably mounted together with the inner member (70) between a closure configuration of the inner passage (31), wherein the rotatable member (32) partially projects out of the support sleeve ( 30) for closing downstream the inner passage (31), and a product dispensing configuration, wherein the rotatable member (32) partially releases the inner passage (31) downstream to allow product flow. through the downstream opening (56) between the rotatable member (32) and the side wall (50).

12.- Device (10) for packaging and dispensing a cosmetic product, comprising:

- A head (14) according to any one of claims 1 to 10, the head (14) having a rotatable member (32) of product application, mounted in the receiving sleeve (30) resting on the body internal (70),

the rotatable member (32) being movably mounted together with the inner member (70) between a closure configuration of the inner passage (31), wherein the rotatable member (32) partially projects out of the support sleeve ( 30) for closing downstream the inner passage (31), and a product dispensing configuration, wherein the rotatable member (32) partially releases the inner passage (31) downstream to allow product flow. through the downstream opening (56) between the rotatable member (32) and the side wall (50); - A container (12) for receiving cosmetic product, the head (14) being mounted on the container (12).

13. - Method of manufacturing a head (14) according to any one of claims 1 to 1 1, characterized in that it comprises the following steps:

- Providing a mold (120) defining a first cavity (122) for forming the inner support member (70), a second sidewall forming cavity (124), and at least one cavity intermediate (126) for forming an elastic biasing member (72), the or each intermediate cavity (124) transversely connecting the first cavity (32) and the second cavity (124);

injecting into the first cavity (122) a fluid material intended to form, after solidification, the internal member (70), the lateral wall (50), and the or each resilient biasing member (72);

successively filling the or each intermediate cavity (126) and then the second cavity (124) with the material injected into the first cavity (122);

- At least partial solidification of the fluid material to form the head (14).

14. - Method for applying a cosmetic product to a body surface a user, comprising the following steps:

- Providing a device (10) according to claim 12;

- Applying the rotary member (32) on a body surface of a user; - joint displacement of the rotary member (32)

and the inner support member (70) to the dispensing configuration, against the resilient biasing member (72);

- Dispensing cosmetic product around the rotary member (32), by product flow between the rotary member (32) and the side wall (50).

15.- Method according to claim 14, characterized in that it comprises, after the dispensing step, the elastic biasing of the inner support member (70) to its downstream position by the or each resilient biasing member ( 72) to urge the rotary member (32) into its closed configuration.