COSMETIC PRODUCT PACKAGING AND DISPENSING DEVICE WITH PUMP WITHOUT AIR RETURN

Abstract

A device (10) for packaging and dispensing a cosmetic product comprises a cylindrical reservoir (12) extending mainly in the direction of an axis (A) of the reservoir (12), the reservoir (12) being adapted to contain the cosmetic product to be dispensed, a pump without air intake (14) for dispensing the cosmetic product contained in the reservoir (12), and a piston (16) movable in the reservoir (12) under the action of the pump without air intake (14). The piston (16) comprises a first part (38), flexible, in contact with the cylindrical wall of the reservoir (12), and a second part (40), rigid, the first and second parts (38, 40) being fixed together. Abstract figure: [Fig. 1]

Description

Title of the invention: DEVICE FOR PACKAGING AND DISPENSING COSMETIC PRODUCTS WITH PUMP WITHOUT AIR RETURN Technical field

[0001] The present disclosure relates to the field of devices for packaging and dispensing cosmetic products with a pump without air intake. Prior art

[0002] A device for packaging and dispensing a cosmetic product with an airless pump is known, for example, from international application WO-A-2016 / 058124. Such a device for packaging and dispensing a cosmetic product conventionally comprises: - a dispensing nozzle; - a tank containing the cosmetic product to be distributed; - a piston configured to move axially inside the reservoir; and - an airless pump configured to, when actuated, create a vacuum to move the piston axially in the reservoir and draw in cosmetic product to be dispensed through the outlet nozzle.

[0003] In WO-A-2016 / 058124, a reservoir filling indicator is provided on a cylindrical lateral surface of the piston, intended to come opposite a transparent window in the reservoir, to warn a user that the cosmetic product packaging and dispensing device is practically empty.

[0004] Furthermore, the piston in this document WO-A-2016 / 058124 has a puck shape whose upper and lower circular edges are substantially wider to form sealing lips in contact with the internal wall of the tank. Between the sealing lips, the piston is concave, the diameter of the piston being less than the diameter of the circular edges, this in order to limit the friction of the piston on the internal wall of the tank.

[0005] The piston described in application WO-A-2016 / 058124 is a single-piece piston. In this case, the piston is made of plastic. A compromise must then be made in the choice of plastic from which the piston is made: a flexible plastic ensures better sealing of the sealing lips in contact with the internal wall of the tank, but is detrimental to the overall rigidity of the piston. The piston then risks deforming and / or pivoting in the tank, so that the lips are no longer fully in contact with the internal wall of the tank. A more rigid plastic limits this risk of piston deformation, but harms the sealing of the contact between the sealing lips and the internal wall of the tank.

[0006] Application JP-A-2012-111527 discloses a packaging and dispensing device with a pump without air intake, similar to that described in application WO-A-2016 / 058124. However, in application JP-A-2012-111527, the piston, made in a single piece, has reinforcement reliefs on its face opposite its face facing the cosmetic product to be dispensed. These reliefs make it possible to stiffen the piston while using a flexible material to obtain a better seal of the piston in contact with the internal wall of the reservoir.

[0007] The solution described in JP-A-2012-111527, however, still requires a compromise to be made in the choice of the material from which the piston is made between the sealing of the piston and its rigidity. Summary

[0008] The present disclosure improves the situation.

[0009] To this end, a device for packaging and dispensing a cosmetic product is proposed, comprising: - a cylindrical reservoir extending mainly in the direction of an axis of the reservoir, the reservoir being adapted to contain the cosmetic product to be dispensed, - a pump without air intake for dispensing the cosmetic product contained in the reservoir, and - a piston movable in the reservoir under the action of the pump without air intake, the piston comprising a first, flexible part, in contact with the cylindrical wall of the reservoir, and a second, rigid part, the first and second parts being fixed together.

[0010] Thus, advantageously, the piston can have a very satisfactory seal at the level of the wall of the reservoir, while being rigid, which makes it possible to avoid unwanted deformation or movement of the piston.

[0011] According to preferred embodiments, the device for packaging and applying a cosmetic product comprises one or more of the following characteristics, taken alone or in combination: - the first part forms a first skirt whose free end is in contact with the wall of the tank; - the first skirt is frustoconical, the diameter of the first skirt at its free end being substantially equal to or greater than the diameter of the tank; - one of the first and second parts is reported on the other of the first and second parts; - the first part forms a second skirt with a first elastic fitting relief in the vicinity of a free end and the second part forms a portion cylindrical or frustoconical with a second elastic fitting relief in the vicinity of a free end, the first and second elastic fitting reliefs cooperating to fix the first and second parts together; - the first part comprises a disc-shaped portion, inside the second skirt, the disc-shaped portion being arranged, along the axis of the tank opposite the cylindrical or frustoconical portion of the second part; - the first part forms an annular portion between the first and second skirts, the annular portion preferably extending perpendicular to the axis of the tank; - the second part has a cylindrical portion of diameter substantially equal to or less than the diameter of the tank; - the first part has a cylindrical section preferably extending in the extension of the first skirt, more preferably from the annular portion, if applicable; - the cylindrical section is in contact by the radially external face of its cylindrical surface with the radially internal face of the cylindrical surface of the cylindrical portion of the second part; - the second part comprises on a radially external and / or bottom surface, at least one pattern, the pattern preferably being hollowed out in the radially external and / or bottom surface; - the tank is at least partly, at least partially transparent, the tank preferably being made of an at least partially transparent material, more preferably of a transparent material; - the device for packaging and dispensing cosmetic products further comprises a covering housing receiving at least part of the reservoir and / or a pump body of the pump; - the covering housing comprises at least one first covering shell which is at least partially transparent, receiving at least part of the tank; - the first covering shell is made of an at least partially transparent material; - the covering housing comprises at least one second covering shell, preferably opaque, receiving at least one pump body of the pump; - the cladding housing comprises a hoop for fixing the first and second cladding shells together; and - the piston divides the reservoir into a first volume, in fluid communication with the pump without air intake, and a second volume, in fluid communication with an atmosphere surrounding the packaging and dispensing device, the first part of the piston defining a first face of the piston oriented towards the first volume and the second part of the piston defining a second face of the piston, oriented towards the second volume.

[0012] Brief description of the drawings

[0013] Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the attached drawings, in which:

[0014] [Fig. 1] schematically represents an example of a device for packaging and dispensing a cosmetic product with a pump without air intake, respectively seen from the front on the left part of the figure, and partially seen in longitudinal section on the right part of the figure.

[0015] [Fig.2] schematically represents in perspective the piston implemented in the cosmetic product packaging and distribution device of [Fig.l].

[0016] [Fig.3] schematically represents a longitudinal sectional view of the piston of the [Fig.2],

[0017] [Fig.4] schematically represents a bottom view of the piston of [Fig.2]. Description of the embodiments

[0018] [Fig.l] schematically represents an example of a device 10 for packaging and dispensing cosmetic products.

[0019] The cosmetic product is here adapted to be distributed in fluid form. The cosmetic product may thus be a liquid, for example a lotion or a solution, a cream or a gel. The cosmetic product may also be biphasic. For example, the cosmetic product comprises suspensions, in particular solid suspensions, in a liquid phase, in the form of a cream or gel.

[0020] The packaging and dispensing device 10 essentially comprises, as illustrated in [Fig.l], a reservoir 12 adapted to contain the cosmetic product to be packaged and dispensed, an airless pump 14 and a piston 16, mounted to slide inside the reservoir 12. Here, in addition, the packaging and dispensing device 10 comprises a covering box 18.

[0021] The covering housing 18 comprises in particular a first shell 20 receiving at least in part the reservoir 12, and a second shell 22 fixed on the first shell 20, receiving at least in part a pump mechanism (not visible in the figures) of the pump without air intake 14. The first shell 20 is preferably at least partially transparent or translucent. Preferably, the first shell 20 is made of a material that is at least partially transparent or translucent, preferably a transparent or translucent material. By "material that is at least partially transparent" is meant here a material that allows at least some of the visible wavelengths to pass through. The second shell 22 is on the contrary preferably at least partially opaque, preferably made of an opaque material.

[0022] The covering box 18 also comprises, according to the example illustrated, a hoop 26 for fixing the first and second shells 20, 22 together. The covering box 18 also comprises a ring 28 fixed to the end of the first shell 20, opposite the second shell 22. The ring 28 protects the end of the first shell 20 and / or facilitates the placement of the packaging and dispensing device 10 on a flat support.

[0023] In a manner known per se to those skilled in the art, the pump 14 without air intake comprises a pump mechanism inside a rigid pump body. The pump mechanism is not described in more detail here.

[0024] The pump 14 further comprises a pump head 24, movable at least along the direction of an axis A, relative to the pump body. The pump head 24 comprises a nozzle 30 for dispensing the cosmetic product.

[0025] The pump body can be fixed to the reservoir 12 inside the second shell 22. For example, the pump body is screwed onto a thread on the surface of a neck of the reservoir 12 or elastically fitted onto reliefs formed on the outer surface of the neck. The neck of the reservoir 12 is here covered by the second shell 22 so as not to be visible (or at least difficult to see) to the user.

[0026] A seal may be provided between the neck of the reservoir 12 and the pump body.

[0027] The reservoir 12 has a generally cylindrical shape, here with a circular section. The reservoir 12 extends here mainly in the direction of the axis A along which the pump head 28 is movable relative to the pump body 26. The bottom 34 of the reservoir 12, at its longitudinal end opposite the neck, is attached to the rest of the reservoir 12, in particular to its cylindrical portion. The bottom 34 also has an opening 36, passing through the bottom 34 in the direction of its thickness. The opening 36 thus places a first portion 12 i of the reservoir 12, arranged, in [Fig.l], under the piston 16 - that is to say between the bottom 34 and the piston 16 - in fluid communication with an atmosphere surrounding the packaging and distribution device 10. The first portion 12 i of the reservoir 12 is thus essentially filled with air.

[0028] The second portion 12 2 of the reservoir 12, opposite the first portion 12 b, extends between the piston 16 and the outlet of the neck 32 or the pump 14. The second portion 12 2 is thus filled with cosmetic product. Alternatively, the second portion 122 can be filled with cosmetic product mixed with gas, such as air or a gas inert with respect to the cosmetic product. The inert gas can in particular limit or even prevent the alteration of the cosmetic product, for example by oxidation.

[0029] The piston 16 is of a general shape with symmetry of revolution with respect to an axis, corresponding to the axis A of extension of the reservoir 12, when the piston 16 is received in the reservoir 12. In the remainder of the description, the axis of symmetry of the piston 16 and the axis A of extension of the reservoir 12 are confused.

[0030] The packaging and dispensing device 10 operates as follows. When a user actuates the pump head 2 4, by pushing the pump head 2 4 into the second shell 22, the pump mechanism produces a vacuum. The vacuum drives cosmetic product and gas, if any, initially present in the second portion 12 2 of the reservoir 12, towards the dispensing nozzle 30 where the cosmetic product possibly mixed with gas is dispensed towards the outside of the packaging and dispensing device 10. In doing so, the second portion 12 2 of the reservoir 12 empties at least partially. This results in a movement of the piston 16 in the reservoir 12, aimed at reducing the volume of the second portion 12 2.This movement of the piston 16 is possible because the first portion 12 i of the reservoir 12 is not hermetically sealed, but, on the contrary, in fluid communication with the environment of the packaging and application device 10. Thus, the movement of the piston 16 tending to increase the volume of the first portion 12 i of the reservoir is possible, because this volume fills with the surrounding gas, passing through the opening 36 in the bottom 34.

[0031] However, no gas enters the second portion 12 2 of the reservoir 12, following the actuation of the pump head 24. Thus, in a manner known per se, the implementation of a pump without air intake 14 limits the contamination of the cosmetic product by the environment, by limiting or even preventing gas exchanges between the second portion 12 2 of the reservoir 12, in which the cosmetic product is contained, and the environment of the packaging and dispensing device 10.

[0032] To enable the distribution of the cosmetic product and limit the gas exchanges between this cosmetic product and the environment of the packaging and distribution device 10, the piston 16 ensures the sealing to liquids and, preferably, to gases, of the second portion 12 2 of the reservoir relative to the first portion 12 i of the reservoir 12.

[0033] To do this, the piston 16 comprises - here consists of - a first flexible part 38, in contact with the wall of the reservoir 12, and a second, more rigid part 40. Here, the first and second parts 38, 40 of the piston 16 take the form of separate pieces, assembled together to form the piston 16. The first part 38 defines a first face 16A of the piston 16 oriented towards the second portion 12 2 of the reservoir 12. Preferably, the first part 38 is the only one of the two parts 38, 40 of the piston 16 in contact with the cosmetic product contained in the reservoir 12. The second part 40 defines a second face 16B of the piston 16, opposite the first face 16A. The second part 40 of the piston 16 is preferably not in contact with the cosmetic product contained in the reservoir 12.

[0034] The first part 38 can be made of any type of rubber or plastic material that is sufficiently flexible, accepting deformation in order to ensure a seal between the cylindrical wall of the reservoir 12 and the piston 16.

[0035] The second part 40 is for example made of one of the following materials: - steel, - aluminum; - drink ; - cardboard; - paper ; - plastic; - glass.

[0036] As can be seen in particular in [Fig. 3], the first part 38 firstly forms a first skirt 42 whose free end 44, bevelled, is intended to come into contact with the wall of the reservoir 12. The first skirt 42 here has a frustoconical shape, with a cross-section complementary to the cross-section of the reservoir 12. The first skirt 42 here has a circular cross-section. Preferably, the diameter of the first skirt 42 at its free end 44 is substantially equal to or greater than the diameter of the cylindrical wall of the reservoir 12, to constrain the skirt 42, in particular its free end 44, against the wall of the reservoir 12. The contact between the first skirt 42 and the reservoir 12 is preferably continuous, along the free end 44 of the first skirt 42.

[0037] Furthermore, the first part 16 forms, in its center, a second skirt 46, frustoconical, here with a circular section, extending in the direction of the axis A of the reservoir 12. At the free end of the second skirt 46 is formed a first elastic fitting relief 48 (or clipping relief). Here, the first elastic fitting relief 48 takes the form of a notch extending circumferentially on the outer surface of the second skirt 46.

[0038] The first elastic fitting relief 48 cooperates with a second elastic fitting relief 50 on a first cylindrical portion 52 of the second part 40, to fix the first 38 and second 40 parts together. Here, the second elastic fitting relief 50 takes the form of a notch extending circumferentially on the inner surface of the first cylindrical portion 52.

[0039] The first and second skirts 42, 46 are connected by an annular portion 54, substantially planar, of the first part 38. The annular portion 54 here extends perpendicular to the axis A of the reservoir 12.

[0040] The first part 38 also forms, according to the example illustrated, a disc-shaped portion 56, inside the second skirt 46. The disc-shaped portion 56 extends perpendicular to the axis A of the reservoir 12. The disc-shaped portion 56 extends, along the axis A of the reservoir 12, between the annular portion 54 and the first elastic casing relief 48. The disc-shaped portion 56 makes it possible to stiffen the second skirt 46 to make the cooperation of the first and second elastic casing reliefs 48, 50 more resistant and the fixing thus produced, of the first and second parts 38, 40 together, more resilient.

[0041] Finally, the first part 38 forms a cylindrical section 58. The cylindrical section 58 of the first part 38 extends from the annular portion 54, in the extension of the first skirt 42. The cylindrical section 58 extends in the direction of the axis A of the reservoir 12. The cross-section of the cylindrical section 58 is here circular. The diameter of the cross-section of the cylindrical section 58 is less than the diameter of the first skirt 42 at its free end 44. The diameter of the cross-section of the cylindrical section 58 is however greater than the maximum diameter of the second skirt 46.

[0042] The cylindrical section 58 is received in the second part 40, in contact with a second cylindrical portion 60 of the second part 40. Preferably, the cylindrical section 58 of the first part 38 and the second cylindrical portion 60 of the second part 40 are in contact over a length of at least 75%, preferably at least 80% of the length of the cylindrical section 58 and / or over substantially the entire length of the second cylindrical portion 60. The cylindrical section 58 of the first part 38 is in contact via the radially outer face of its cylindrical surface, with the radially inner face of the cylindrical surface of the second cylindrical portion 60. The contact between the cylindrical section 58 and the second cylindrical portion 60 contributes to improving the stability of the first part 38, in particular of the first skirt 42.The second cylindrical portion 60 is for example of an external diameter substantially equal to the diameter of the cylindrical part of the reservoir 12. Thus, the second cylindrical portion 60 can be in contact with the cylindrical wall of the reservoir 12, along a circumferential line.

[0043] The second part 40 comprises, in addition to the first 52 and second 60 cylindrical portions, a disc-shaped base 62. The base 62 extends perpendicular to the axis A of the reservoir 12. The base 62 has a diameter substantially equal to the diameter of the reservoir 12. Alternatively, the diameter of the base 62 is substantially less than the diameter of the reservoir 12. The base 62 is connected to the first and second portions 52, 60.

[0044] Furthermore, as can be seen in particular in [Fig.2] and [Fig.4], patterns 64, 66 can be produced on the radially external face 40e of the second part. 40 and / or the lower face 40f of the second part 40, respectively. These patterns 64, 66 may be visible to the user, when the first shell 20 is at least partially transparent. The patterns 64, 66 may then contribute to the aesthetics of the packaging and dispensing device 10.

[0045] Here, advantageously, the patterns 64, 66 are made hollow on the radially external face 40e of the second part 40 and the lower face 40f of the second part 40, respectively. The patterns 64, 66 thus do not hinder the movement of the piston 16 in the reservoir 12.

[0046] The invention is not limited to the example described above. On the contrary, the invention is susceptible to numerous variants accessible to those skilled in the art.

[0047] For example, in the illustrated example, the first and second parts 38, 40 are two parts formed separately and then assembled together. In other words, one of the parts 38, 40 is attached to the other of the parts 38, 40. Alternatively, however, one of the parts 38, 40 may be overmolded onto the other of the parts 38, 40.

[0048] Furthermore, in the example described, the first shell 20 is made of an at least partially transparent material. As a variant, however, only a portion of this first shell 20 is made of an at least partially transparent material, the remainder of the first shell possibly being made of an opaque material. In this case, the patterns 64, 66 are only visible to the user when the piston 16 is opposite the portion of the first shell 20 made of an at least partially transparent material.

[0049] Also, the packaging and distribution device 10 may be devoid of a first shell 20, receiving the reservoir 12. In this case, the reservoir 12 may be directly grasped by a user of the packaging and distribution device 10.

Claims

Claims

1. Device for packaging and dispensing (10) a cosmetic product comprising: - a cylindrical reservoir (12) extending mainly in the direction of an axis (A) of the reservoir (12), the reservoir (12) being adapted to contain the cosmetic product to be dispensed, the reservoir (12) being at least partly, at least partially transparent, - a pump without air intake (14) for dispensing the cosmetic product contained in the reservoir (12), and - a piston (16) movable in the reservoir (12) under the action of the pump without air intake (14), the piston (16) comprising a first part (38), flexible, in contact with the cylindrical wall of the reservoir (12), and a second part (40), rigid, the first and second parts (38, 40) being fixed together in which the second part (40) comprises on a radially external surface (40e) at least a first pattern (64) visible through the reservoir (12),the at least one first pattern (64) preferably being hollowed out in the radially external surface (40e) of the second part (40).,

2. Device for packaging and dispensing cosmetic products according to claim 1, in which the first part (38) forms a first skirt (42) whose free end (44) is in contact with the wall of the reservoir (12).

3. Device for packaging and dispensing cosmetic products according to claim 2, in which the first skirt (42) is frustoconical, the diameter of the first skirt (42) at its free end (44) being substantially equal to or greater than the diameter of the reservoir (12).

4. Device for packaging and dispensing cosmetic products according to one of the preceding claims, in which one of the first and second parts (38, 40) is attached to the other of the first and second parts (38, 40).

5. Cosmetic product packaging and dispensing device according to claim 4, in which the first part (38) forms a second skirt (46) with a first elastic fitting relief (48) in the vicinity of a free end and the second part (40) forms a cylindrical or frustoconical with a second elastic fitting relief (50) in the vicinity of a free end, the first and second elastic fitting reliefs (48, 50) cooperating to fix the first and second parts (38, 40) together.

6. Cosmetic product packaging and dispensing device according to claim 5, in which the first part (38) comprises a disc-shaped portion (56), inside the second skirt (46), the disc-shaped portion being arranged, along the axis (A) of the reservoir opposite the cylindrical or frustoconical portion (52) of the second part (40).

7. A cosmetic product packaging and dispensing device according to claim 5 or 6, wherein the first part (38) forms an annular portion (54) between the first and second skirts (42, 46), the annular portion (54) preferably extending perpendicular to the axis (A) of the reservoir (12).

8. A cosmetic product packaging and dispensing device according to any one of the preceding claims, wherein the second part (40) has a cylindrical portion (60) of diameter substantially equal to or less than the diameter of the reservoir (12).

9. A cosmetic product packaging and dispensing device according to any one of the preceding claims, wherein the first part (38) has a cylindrical section (58) preferably extending in the extension of the first skirt (42), more preferably from the annular portion (54), if applicable.

10. Device for packaging and dispensing cosmetic products according to claims 8 and 9, in which the cylindrical section (58) is in contact via the radially external face of its cylindrical surface with the radially internal face of the cylindrical surface of the cylindrical portion (60) of the second part (40).

11. Device for packaging and dispensing cosmetic products according to any one of the preceding claims, in which the second part (40) comprises on a bottom surface (40f), at least one second pattern (66), the second pattern preferably being hollowed out in the bottom surface (40f).

12. Device for packaging and dispensing cosmetic products according to any one of the preceding claims, wherein the reservoir (12) is made of an at least partially transparent material, more preferably of a transparent material.

13. Device for packaging and dispensing cosmetic products according to any one of the preceding claims, further comprising a covering housing (18) receiving at least part of the reservoir (12) and / or a pump body of the pump (14).

14. Device for packaging and dispensing cosmetic products according to claim 13, in which the covering case (18) comprises at least a first covering shell (20) at least partially transparent, receiving at least in part the reservoir (12).

15. Device for packaging and dispensing cosmetic products according to claim 14, in which the first covering shell (20) is made of an at least partially transparent material.

16. Device for packaging and dispensing cosmetic products according to one of claims 13 to 15, in which the covering case (18) comprises at least one second covering shell (22), preferably opaque, receiving at least one pump body of the pump (14).

17. A cosmetic product packaging and dispensing device according to claims 14 and 16, wherein the covering housing (18) comprises a hoop (26) for fixing the first and second covering shells (20, 22) together.

18. Cosmetic product packaging and dispensing device according to any one of the preceding claims, in which the piston (16) divides the reservoir (12) into a first volume (12i), in fluid communication with the pump without air intake (14), and a second volume (122), in fluid communication with an atmosphere surrounding the packaging and dispensing device (10), the first part (38) of the piston (16) defining a first face (16B) of the piston (16) facing the first volume (120 and the second part (40) of the piston (16) defining a second face (16A) of the piston (16), facing the second volume (122).

Images