PRODUCT APPLICATOR MEMBER HAVING TWO INTERPOSED TYPES OF APPLICATION ELEMENTS, PACKAGING AND APPLICATION DEVICE COMPRISING SUCH AN APPLICATOR MEMBER, AND METHOD FOR MANUFACTURING SAID APPLICATOR MEMBER

Abstract

Applicator member (10) for applying a product to keratin fibres, notably to eyelashes, comprising: —a core (11) made of polymer material, —first application elements (12) that project from the core (11) and are integral with said core (11), and—second application elements (13) that project from the core (11) and are separate from the first application elements (12). Said first and second application elements (12, 13) are arranged in at least two helical coils disposed alternately along the longitudinal axis (X2-X2′) of the core (11).

Claims

1. Applicator member (10, 30) for applying a product to keratin fibres, notably to eyelashes, comprising: a core (11, 31) made of polymer material and extending along a longitudinal axis (X2-X2′), first application elements (12, 32) that project from the core (11, 31) and are integral with said core (11, 31), and second application elements (13, 33) that project from the core (11, 31) and are separate from the first application elements (12, 32), characterized in that said first and second application elements (12, 32; 13, 33) are arranged in at least two helical coils disposed alternately along the longitudinal axis (X2-X2′) of the core (11, 31).

2. Applicator member (10, 30) according to claim 1, wherein a helical coil of the first application elements (12, 22) is disposed between a helical coil of the second application elements (13, 33).

3. Applicator member according to claim 1, comprising a support (22, 42) comprising at least two arms (20, 40) that are twisted at least one partially together, the core (11, 31) bearing the first and second application elements (12, 32; 13, 33) being retained between said arms (20, 40) and turning through more than one revolution on itself about its longitudinal axis (X2-X2′) under the twisting effect brought about by the arms (20, 40) of the support (22, 42).

4. Applicator member according to claim 1, wherein the core (11) is overmoulded on the second application elements (13).

5. Applicator member according to claim 1, wherein the core (31) comprises two complementary parts (36, 37) that are connected at one of their ends by material forming a hinge (38) and are hinged, preferably along an axis perpendicular to the longitudinal axis (X2-X2′) of the core (11), between an opened position and a closed position in which the second application elements (33) are pinched between the two parts (36, 37) of the core (31).

6. Applicator member according to claim 5, wherein each of the parts (36, 37) bears, on its outer surface, the first application elements (32).

7. Applicator member according to claim 5, wherein one of the parts (36) of the core (31) comprises, on an inner surface, a longitudinal rib (36a) that extends from the free end of said part (36) towards the hinge (38) and cooperates with a corresponding longitudinal groove (37a) in the second part (37), the groove (37a) extending from the free end of said second part (37) towards the hinge (38).

8. Applicator member according to claim 1, wherein the first application elements (12, 32) are spikes and the second application elements (13, 33) are free fibres or bristles.

9. Applicator member according to claim 1, wherein the core (11, 31) has, in cross section, a shape with at least two diametrically opposed ribs (11a, 11b, 31a, 31b) that meet at the centre of the core (11, 31).

10. Device (1) for packaging and applying a product, notably a makeup product, comprising a container (2) for storing the product, and an applicator (3) comprising an applicator member (10, 30) according to claim 1, which is able to be inserted into the internal volume of the container (2) in order to be loaded with product.

11. Method for manufacturing an applicator member according to claim 1, comprising the following steps: forming a one-piece assembly with the core (11, 31), the first application elements (12, 32) and the second application elements (13, 33), and deforming the core (11, 31) by twisting it about its longitudinal axis (X2-X2′) to form the two helical coils, and keeping the core in the deformed state.

Description

[0050] The present invention will be understood better from studying the detailed description of embodiments that are given by way of entirely non-limiting example and are illustrated by the appended drawings, in which:

[0051] FIG. 1 is a schematic view, in longitudinal section, of a packaging and application device according to the invention;

[0052] FIG. 2 shows a perspective view, on its own, of the applicator member of the applicator in FIG. 1 according to a first exemplary embodiment of the invention, before the support is fitted on the core;

[0053] FIG. 3 is a view in section of the applicator member in FIG. 2;

[0054] FIG. 4 shows a perspective view, on its own, of the applicator member in FIG. 2 after the application elements have been shaped;

[0055] FIG. 5 illustrates a view in cross section of the applicator member in FIG. 2 at the end of the core after the support has been fitted on the core and before said support is twisted;

[0056] FIG. 6 is a perspective view of the applicator member in FIG. 4 after the support has been fitted on the core and said support has been twisted;

[0057] FIG. 7 shows a perspective view, on its own, of an applicator member of the applicator in FIG. 1 according to a second exemplary embodiment of the invention, after the application elements have been shaped but before the support is fitted on the core;

[0058] FIG. 8 is a view in section of an applicator member according to a third exemplary embodiment of the invention, before the application elements are shaped and before the support is fitted on the core;

[0059] FIG. 9 shows a perspective view, on its own, of an applicator member of the applicator in FIG. 1 according to a fourth exemplary embodiment of the invention, before the application elements are shaped and before the support is fitted on the core;

[0060] FIG. 10 illustrates a step in the manufacture of the applicator member in FIG. 9;

[0061] FIG. 11 is a view in section of the applicator member in FIG. 9 after the support has been fitted on the core and before said support is twisted;

[0062] FIG. 12 is a perspective view of the applicator member in FIG. 9 after the application elements have been shaped, after the support has been fitted on the core and said support has been twisted; and

[0063] FIG. 13 is a view in section of the applicator member according to another embodiment after the support has been fitted on the core and before said support is twisted.

[0064] FIG. 1 shows a device 1 for packaging and applying a product, comprising a container 2 delimiting an internal volume 2a containing a product to be applied to a user's eyelashes and/or eyebrows, for example a cosmetic makeup product such as mascara or a care product. The device 1 for packaging and applying a product also comprises an applicator or application device 3 for applying said product.

[0065] The container 2 extends along a longitudinal overall axis X1-X1′, shown in a position presumed to be vertical. The body of the container 2 is provided with a closed lower end 4 forming a bottom and an upper end 5 forming a neck provided with an opening 7, opposite the lower end 4, allowing access to the internal volume 2a containing the product. In a variant, provision could be made for the body of the container not to comprise a neck and for the opening to be made in a free edge of said container.

[0066] In the embodiment illustrated, the neck 5 has an outside diameter smaller than the outside diameter of the body of the container 2 and comprises, on its outer surface, a thread 5a. The body of the container 2 may be made, for example, of rigid synthetic material.

[0067] The application device 3 or applicator extends along a longitudinal overall axis X2-X2′, shown in a position presumed to be vertical, that is coincident with the axis X1-X1′ in FIG. 1. The application device 3 comprises a gripping member 7, a stem 8, a wiping member or wiper 9 and an applicator member 10.

[0068] The gripping member 7 has a tubular mounting skirt 7a and a transverse wall 7b that extends substantially perpendicularly to the axis X2-X2′ and is attached to the mounting skirt 7a. The mounting skirt 7a comprises a threaded inner surface 7c that is intended to be screwed onto the thread 5a on the neck of the container 2.

[0069] The stem 8 comprises a first end fastened to the applicator member 10 and a second end fastened to the gripping member 7. In the example illustrated, the stem 8 has a circular cross section more or less along its entire length. In a variant, other shapes could be provided for the cross section of the stem, for example a polygonal shape, such as a square or rectangular shape, or even an oval shape, etc.

[0070] The stem 8 and the gripping member 7 may be produced in one piece, for example by injection moulding a plastics material, to which the applicator member 10 is then attached. Provision could be made for the stem to be fastened to the gripping member by any other means, for example by adhesive bonding, screwing, etc.

[0071] As illustrated in FIG. 1, the wiping member 9 comprises a cylindrical body 9a with an outside diameter substantially the same as the inside diameter of the neck 5 of the container 2. The body is delimited by two opposite ends, with one of the ends being in radial contact with the outer surface of the stem 8. The body 9a comprises, on its outer surface, a member 9b for retaining it on the container 2, for example in the form of an annular bulge that is snap-fitted in a complementary shape on the container 2.

[0072] The wiping member 9 also has, at a first free end of the body, an annular wiping lip 9c, defining with its free end a wiping orifice 9d with a substantially circular cross section. This wiping lip 9c extends in the direction of the stem 8 and is dimensioned so as to press at least against the stem 8, or even also against the applicator member 10 as the applicator is removed from the container. The wiping lip 9c in this case extends obliquely with respect to the body 9a towards the axis X2-X2′.

[0073] The inside diameter of the orifice 9d is preferably less than or equal to the outside diameter of the stem 8, so as to prevent the product contained in the container 2 from escaping to a space delimited between the stem and the mounting skirt 7a of the gripping member 7 of the application device 3.

[0074] The body 9a of the wiping member 9 comprises, at a second end opposite the first end, an annular flange 9e having an outside diameter substantially equal to the inside diameter of the mounting skirt 7a of the gripping member 7 of the application device 3. After the application device 3 has been joined to the container 2, the flange 9e bears axially against the neck 5 of the container.

[0075] The wiping member 9 may be made for example of an elastomer material or a polyolefin, notably polyethylene or any other plastics material. The wiping lip 9c is, for example, more flexible than the body 9a of the wiping member 9.

[0076] As illustrated in FIGS. 2 to 4, the applicator member 10 has an elongate main body or core 11 extending along the longitudinal overall axis X2-X2′, first application elements 12 and second application elements 13.

[0077] The core 11 is made of polymer material, notably thermoplastic material, having the first application elements or spikes 12 that are moulded together with the core 11 and extend radially from the core 11 and all around the latter. The spikes 12 may be aligned with one another in at least one row, which extends axially for example along more or less the entire length of the core 11.

[0078] A “spike” denotes an individual projecting element.

[0079] “Multiple spikes” denotes spikes having at least two arms that extend in divergent directions away from the core, these arms being joined, notably on the core, to one and the same base or having bases that meet or are close to one another. “Bases close to one another” denotes bases the spacing between which is less than their greatest dimension measured perpendicular to the axis of elongation of the corresponding arm.

[0080] As can be seen in FIG. 3, the core 11 has, in cross section, a cross shape with four ribs 11a, 11b, 11c, 11d, opposite one another in pairs, that meet at the centre of the core 11.

[0081] In the example illustrated in FIGS. 2 to 5, the core 11 bears two diametrically opposed rows 14 of double spikes 12. Each double spike 12 has two arms which diverge with increasing distance from the longitudinal axis of the core 11, at an angle α, for example equal to 60°. The arms of a single double spike 12 meet at the top of the corresponding rib 11a, 11c of the core 11. The spikes 12 form first application elements that are particularly suitable for combing/separating the eyelashes during the application of the product.

[0082] The core 11 also bears two diametrically opposed rows 15 of free fibres 13 or bristles, made for example of nylon, that form second application elements that are particularly suitable for loading with the product to be applied. The two rows of free fibres 13 form a layer of free fibres extending on each side of the core 11.

[0083] The free fibres 13 are disposed in planes that are interposed with respect to the planes containing the spikes 12.

[0084] In order to produce the applicator member 10, first of all the core 11 is moulded from polymer material together with the first application elements 12, namely in this case the spikes, and with the second application elements 13, in this case the free fibres. The core 11 with the first application elements 12 is advantageously overmoulded on the second application elements 13, in this case the free fibres, preferably positioned parallel to one another, as illustrated in the figures. Generally, first and second application elements 12, 13 are obtained that are inseparable from the core 11 so as to form an application assembly in one piece with the core 11.

[0085] This application assembly is then disposed between two arms 20 of a support 22, visible in FIGS. 5 and 6. The support 22 initially has, before twisting, for example the form of a U-shaped hairpin, and is made for example of metal material.

[0086] A first arm 20 of the U-shaped hairpin is threaded between a first rib 11a and a second rib 11b of the core 11, and a second arm 20 of the U-shaped hairpin is threaded between a third rib 11c and a fourth rib 11d of the core 11, as can be seen in FIG. 5. Generally, the first arm of the hairpin is threaded between two adjacent ribs and the second arm of the hairpin is threaded between two adjacent ribs symmetrically with respect to the first arm of the hairpin.

[0087] A twisting force is then applied to said support 22 in order to form a twisted application assembly comprising the core bearing the intertwined spikes 12 and free fibres 13, as can be seen in FIG. 6. The twisting of the arms 20 of the support 22 twists the core 11 about its longitudinal axis and allows these two types of application element 12, 13 to spread helically, which elements take up an interposed distribution in helical layers, as can be seen in FIG. 6.

[0088] It makes no difference whether twisting is carried out in one twisting direction or in the other.

[0089] The application assembly may turn through more than one revolution on itself about its longitudinal axis under the effect of the twist imparted by the arms 20 of the support 22, forming an alternate succession of helical coils along the longitudinal axis of the core, each containing the first or the second application elements.

[0090] In other words, an alternation of the first and second application elements in the longitudinal direction of the applicator member is obtained.

[0091] The embodiment illustrated in FIG. 7 differs from the embodiment illustrated in FIGS. 2 to 6 only by the fact that the core 11 bears two diametrically opposed rows 14 of single spikes 12 moulded together with the core rather than double spikes. In this example, the core 11 likewise bears two diametrically opposed rows 15 of free fibres 13 as in the previous embodiment.

[0092] The height of the spikes 12, whether single or double, and of the free fibres 13, may decrease towards the free ends of the core 11. The shaping of the application elements 12, 13 is visible in FIG. 4. The shaping of the spikes 12 is advantageously carried out during the moulding of the core. The shaping of the free fibres 13 is carried out in particular by cutting the fibres.

[0093] The embodiment illustrated in FIG. 8 differs from the embodiment illustrated in FIGS. 2 to 6 only by the fact that the core 11 bears two layers of free fibres 13a, 13b rather than one.

[0094] Each fibre layer 13a, 13b is curved at the centre of the core 11 and comprises a first part extending from a first rib 11a; 11b of the core and a second part extending from an adjacent second rib 11d; 11c of the core.

[0095] Thus, the core 11 bears four rows 15a, 15b, diametrically opposed in pairs, of free fibres 13a, 13b moulded together with the core.

[0096] The core 11 likewise bears two diametrically opposed rows 14 of double spikes 12. In this example, one of the ends of the fibre layers 13a, 13b extends between two arms of a double spike.

[0097] In a variant, single spikes could be provided.

[0098] FIGS. 9 to 12 illustrate another embodiment of an applicator member 30.

[0099] The applicator member 30 has an elongate main body or core 31, first application elements 32 and second application elements 33.

[0100] The core 31 is made of polymer material, notably thermoplastic material, having the first application elements or spikes 32 that are moulded together with the core 31 and extend radially from the core 31 and all around the latter. The spikes 32 may be aligned with one another in at least one row, which extends axially for example along more or less the entire length of the core 31.

[0101] As can be seen in FIG. 11, the core 31 has, in cross section, a shape with two ribs 31a, 31b that meet at the centre of the core 31. In the example illustrated in FIGS. 9 to 12, the core 31 bears two diametrically opposed rows 34 of double spikes 32. Each double spike 32 has two arms which diverge with increasing distance from the longitudinal axis of the core 31, at an angle α, for example equal to 60°.

[0102] The arms of a single double spike 32 meet at the top of the corresponding rib 31a, 31b of the core 31. The spikes 32 form first application elements that are particularly suitable for combing/separating the eyelashes during the application of the product. The core 31 also bears two diametrically opposed rows 35 of free fibres 33 or bristles, made for example of nylon, that form second application elements that are particularly suitable for loading with the product to be applied.

[0103] The free fibres 33 are disposed in planes that are interposed with respect to the planes containing the spikes 32.

[0104] In the example illustrated in FIGS. 9 to 12, the core 31 comprises two parts 36, 37 that are connected at one of their ends by material forming a hinge 38 hinged along an axis perpendicular to the longitudinal axis X2-X2′ of the core 11. Thus, the two parts 36, 37 act as a jaw that is hinged between an opened position, visible in FIG. 10, in which the free fibres 33 are positioned substantially adjacently, and preferably parallel, to one another, and a closed position, visible in FIGS. 9 and 11, in which the free fibres 33 are pinched between the two parts 36, 37 of the core 31.

[0105] Each of the parts 36, 37 bears, on its outer surface, double spikes 32. In a variant, single spikes could be provided.

[0106] One of the parts 36 comprises, on its inner surface, opposite the outer surface, a longitudinal rib 36a that extends from the free end of said part 36 towards the hinge 38 and cooperates with a corresponding longitudinal groove 37a in the second part 37. The groove 37a extends from the free end of said second part 37 towards the hinge 38.

[0107] In order to produce the applicator member 30, first of all the core 31 is moulded from polymer material together with the first application elements 32, namely in this case the spikes. Next, the free fibres 33 are disposed in tufts or bunches between the parts 36, 37 of the core 31, substantially adjacently, and preferably parallel, to one another, and then the core 31 is hinged into the closed position, visible in FIGS. 9 and 11, so as to pinch the free fibres 33 between the two parts 36, 37 of the core 31.

[0108] In a similar manner to the embodiments illustrated in FIGS. 2 to 7, first and second application elements are obtained that are inseparable from the core so as to form a one-piece application assembly.

[0109] This application assembly is then disposed between two arms 40 of a support 42, visible in FIGS. 11 and 12. The support 42 initially has, before twisting, for example the form of a U-shaped hairpin, and is made for example of metal material.

[0110] A first arm 40 of the U-shaped hairpin is threaded between a first rib 31a of the core 11 and the layer of free fibres 33, and a second arm 20 of the U-shaped hairpin is threaded between a second rib 31b and the layer of free fibres 33, on the opposite side from the first arm 40 of the hairpin, as can be seen in FIG. 11. Generally, each of the arms of the hairpin is threaded symmetrically between a rib and the adjacent layer of free fibres.

[0111] A twisting force is then applied to said support 42 in order to form a twisted application assembly comprising the core 31 bearing the intertwined spikes 32 and free fibres 33, as can be seen in FIG. 12. The twisting of the arms 40 of the support 42 twists the core 31 about its longitudinal axis and allows these two types of application element 32, 33 to spread helically, which elements take up an interposed distribution in helical layers, as can be seen in FIG. 12. It makes no difference whether twisting is carried out in one twisting direction or in the other. However, in this exemplary embodiment, twisting is preferably carried out in a direction such that the arms 40 of the hairpin are deformed in the direction of the adjacent ribs 31a, 31b of the core while the support is being twisted. Thus, in the exemplary embodiment illustrated in FIG. 9, the twisting of the hairpins 40 of the support 42 is preferably carried out in the clockwise direction.

[0112] The application assembly may turn through more than one revolution on itself about its longitudinal axis under the effect of the twist imparted by the arms 40 of the support 42, forming an alternate succession of helical coils along the longitudinal axis of the core, each containing the first or the second application elements.

[0113] In other words, an alternation of the first and second application elements 32, 33 in the longitudinal direction of the applicator member 30 is obtained.

[0114] In all the embodiments, the free fibres or bristles 13, 33 may all be identical to one another, or indeed be formed from a collection of bunches of different types of bristle, for example with different diameters, shapes and cross sections. The bristles are made, for example, of synthetic or natural material, notably of polyamide.

[0115] In this embodiment, provision could be made for the internal surfaces of the two parts 36, 37 to comprise notches (not shown) configured to make it possible to position the free fibres 33 before the parts are hinged into the closed position. Thus, a free fibre 33 may be disposed in a plane between two planes that each contain a spike 32.

[0116] The embodiment illustrated in FIG. 13 differs from the embodiment illustrated in FIGS. 9 to 12 only by the fact that the core 11 has, in cross section, a cross shape with four ribs 31a, 31b, 31c, 31d, opposite one another in pairs, that meet at the centre of the core 31. The addition of ribs makes it possible to improve the hold of the free fibres 33.

[0117] In the embodiment in FIG. 13, each part 36, 37 of the core 31 comprises a central rib 31a, 31c and two lateral half-ribs suitable for cooperating with the two lateral half-ribs provided on the other part 37, 36 so as to form two lateral ribs 31b, 31d that pinch the free fibres 13.

[0118] In this embodiment, the arms of the hairpin 40 of the support 42, before twisting, are threaded respectively between two adjacent ribs symmetrically with respect to one another.

[0119] By way of indication, in order to mould the second application elements on the core, use can be made of any synthetic material which is or is not relatively rigid, for example SEBS, a silicone, latex, a material having improved slip, butyl, EPDM, a nitrile, a thermoplastic elastomer, a polyester elastomer, a polyamide elastomer, a polyethylene elastomer or a vinyl elastomer, a polyolefin such as PE or PP, PVC, EVA, PS, SEBS, SIS, PET, POM, PU, SAM, PA or PMMA.

[0120] By virtue of the invention, an applicator of simple and economic design that is easy to assemble is provided, with an alternation of free fibres or bristles and spikes.

[0121] In addition, the free fibres or bristles are held securely with the core made of thermoplastic material.