FR3046922A1 - COSMETIC DEVICE COMPRISING AN ADJUSTED MEDIUM - Google Patents

Abstract

The present invention relates to a cosmetic assembly (10) of longitudinal axis X comprising a block (2) of product and a gripping piece (4) made in a monolithic manner and penetrating at least partially in the block (2), the gripping piece (4) comprising a support structure (3) of the product defining a central opening (6) of axis X and connecting to a peripheral mounting skirt (11) by a connection zone (12), the support structure (3) comprising gripping elements (8) extending from a peripheral holding ring (7) connected to the connection zone (12), said attachment elements (8) delimiting at less partially a non-circular contour of the central opening (6).

Description

COSMETIC DEVICE COMPRISING AN ADJUSTED MEDIUM

The present invention relates to devices for packaging and dispensing a product, in particular a cosmetic makeup or care product such as a lip balm, a blush or a deodorant.

"Cosmetic product" means any product as defined in Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products.

In the universe of solid cosmetics molded in half-sphere, the architecture of the packaging and dispensing device is often substantially the same. Generally, the device comprises a cover which caps a lower part. The lower part is formed by a receptacle secured to a hanging part on which a block of formula rests.

It has already been proposed different type of hangers.

The French application FR 2 563 711 discloses a device of the aforementioned type comprising a fastener in two parts: a central retaining platform and a peripheral base. The central platform is traversed by a central orifice and can radially carry a plurality of fins. It is folded at its periphery to form a skirt attached to the peripheral base, the latter being assembled to the cover by a screwing. However, the two-part structure of the fastener makes it relatively complex to manufacture and expensive. In addition, the platform has a large proportion of plastic but few recesses in which the product can be inserted. The holding of the block on the grip is not optimal.

US Pat. No. 8,444,337 discloses a wheel-shaped attachment piece having an outer edge or rim, a hub, and spokes extending from the outer edge to the hub. The product is poured on the hanging piece and fit between the spokes. However, the spacing between two spokes being maximum near the rim and minimum near the hub, the product is introduced mainly near the rim. The product block is thus mounted with a stronger hold near the rim than near the hub. Again, the holding of the block on the attachment piece can be improved.

The patent application FR 2 925 263 describes a grid-shaped attachment piece extending at least partly in the block and comprising cells having a honeycomb configuration. However, this attachment has the disadvantage of being quite difficult to manufacture and unmold. In addition, during the manufacture of the cosmetic device, the flow of the hot cosmetic liquid product through the cells is relatively slow, because they form a roasting slowing down its progression.

The patent application WO2015 / 101358 discloses a fastener comprising a hollow central hub and a peripheral ring interconnected by concentric openwork rings. This attachment piece has a high proportion of plastic close to its center. Thus, in the middle, the product block is fragilely attached to the attachment piece. However, at this point, it is precisely subjected to a maximum shear force when using the device. Here again, the holding of the product block on the attachment piece can be further improved. In addition, the manufacture of the device is made more difficult because of the small section of the central opening.

There is a need to benefit from a packaging and dispensing device of the aforementioned type able to hold the block securely to the attachment piece when the device is used by the user while being able to properly apply the product. on the body surface chosen and to resist breakage at the interface between the block and the attachment piece.

There is still a need to benefit from such a simple device to manufacture and inexpensive.

SUMMARY The invention aims in particular to meet all or part of these needs and relates in non-limiting examples of implementation to a cosmetic assembly of longitudinal axis X comprising a product block and a fastening piece made so monolithic and penetrating at least partially in the block, the attachment piece comprising a product support structure defining a central opening of axis X and connecting to a peripheral mounting skirt by a connecting zone, the support structure comprising gripping elements extending from a peripheral holding ring connected to the connection zone, said gripping elements at least partially delimiting a non-circular contour of the central opening.

Due to the particular structure of the attachment piece, the product is likely to pass through a relatively wide central opening since it is defined by fastening elements located on the peripheral holding ring. Thus, during the casting of the product, it can cross easily and quickly the attachment piece for a good distribution of the product on the piece after solidification and good consistency of the block.

In addition, the attachment piece has a relative proportion of recessed surface and solid surface which is balanced. In particular, the center of the attachment piece is largely devoid of material and leaves room for a recess for better block strength and better resistance to shearing, shock or falling.

A particular advantage related to the non-circular contour of the central opening lies in a better mechanical strength of the block on the attachment piece over time. The block is retained on the ring by the fastening elements implanted on the ring and penetrating into its mass irregularly. The uneven outline of the central opening favors the resistance of the block to the recess. The invention also relates to a cosmetic device for packaging and dispensing a product comprising an assembly as defined above, the assembly being arranged on a base and capped by a cover completely separable from the base.

This device is particularly resistant to shocks and constraints imposed by the user. The invention also relates to a method of manufacturing the cosmetic assembly as defined above, comprising the operations of: (i) providing a gripping piece as defined above, (ii) Turning the attachment piece in him making a 180 ° rotation about an axis, (iii) Place a mold of chosen shape under the attachment piece, (iv) Inject the product into the mold by passing through the attachment piece, (v ) Allow the product to solidify in the mold, (vi) Unmold, (vii) Flip the attachment piece 180 ° by rotating it 180 ° about an axis.

The method of manufacturing the cosmetic assembly according to the invention is particularly interesting because the structure of the attachment piece facilitates the molding of the product block and the injection of the liquid product, by providing an optimal ratio of full surface and recessed surface and optimum distribution thereof.

MAIN DEFINITIONS "Monolithically" means in one piece.

A "mounting skirt" is a substantially cylindrical shaped portion extending axially from the support structure toward the bottom of the base. The mounting skirt forms the outer edge of the attachment piece. Generally, the height of the mounting skirt measured along the X axis is less than the width of the support structure. It can be symmetrical of revolution around the X axis.

According to the invention, the shape of the contour of the central opening is appreciated in top view of the attachment piece.

The outline of the central opening may be delimited: - either only by hooking elements, - either by hooking elements and one or more portions of the ring, - or by hooking elements and elements consolidation, - either by hooking elements, consolidation elements and one or more portions of the ring. The expression "the gripping elements delimit at least partially a non-circular contour of the central opening" means that in all these cases, the contour of the central opening is not a circle. The central opening is an X-axis opening. It can be symmetrical of revolution or not.

PREFERRED EMBODIMENTS The assembly according to the invention may comprise one or more of the following characteristics, taken in isolation or in any technically possible combination: the attachment elements form a set of attachment meshes occupying successive axial positions around the X axis, each mesh attachment internally delimiting a single openwork. Thus, the grip is even stronger and better resists the weight of the block. - The peripheral retaining ring defines with the elements of attachment the contour of the central opening. Thus, the central opening extends to the ring for a better distribution of the block during the manufacture of the product and a better mechanical strength. - The set of mesh attachment form a row. The room is more balanced. The assembly comprises consolidation elements extending between the fastening elements and the central opening and defining consolidation stitches. - The mounting skirt has an outer surface provided with a fastener, including a thread, a groove, a stop or a snap ring. Fixing the attachment piece on a base is facilitated and does not require additional room. - The attachment elements are located along an implantation axis Y converging towards the X axis. The balance of the attachment piece is improved. The set is more resistant to stress. - The peripheral mounting skirt is connected to the retaining ring by a connection area. - The hanging elements have, in top view of the hanging piece, an elbow shape, an arch form, an arch shape, a circle shape, a cross shape, a lobe shape, a bar shape, a stick shape, a horseshoe shape or a hook shape. These configurations securely hang the product. - The hooking elements are arranged at a distance from each other or in contact with each other. By arranging the elements of attachment at a distance from each other, a gap is formed between them. The product can be housed in this gap for better holding the block on the attachment piece, thanks to a better distribution of constraints. By arranging the gripping elements in contact with each other, an angular outline is drawn at the junction of the attachment pieces, also for better holding the block on the attachment piece, thanks to improved consistency. - The central opening has, in top view of the attachment piece, an oblong shape, oval, polygonal, including square, rectangular or triangular, reniform, crenellated, star. The shape of the opening is adaptable to the final format of the device. - The central opening has branches that extend to the peripheral ring. The block is thus hung from the periphery of the ring to the center of the attachment piece. - Each mesh attachment internally delimits an aperture at least partially filled with product. The product forms bridges between the block portion located above the attachment piece and that below.

DESCRIPTION OF THE FIGURES The invention will be better understood on reading the following detailed description, non-limiting examples of implementation thereof, and on examining the appended schematic and partial drawing, which an integral part of the description, and in which: FIG. 1 represents, in perspective, an exemplary packaging and application device produced in accordance with the invention, in the closed position of the cover, FIG. 2 represents, in perspective, the device of FIG. 1 in the open position of the lid, FIG. 3 represents in isolation the base and the cosmetic assembly of the device of FIG. 1, in longitudinal section, FIGS. 4 to 14 represent, in a view from above, examples of attachment parts of the cosmetic assembly according to the invention.

The device for packaging and applying X-axis shown in FIG. 1 comprises a container 21 containing a block 2 of product P to be applied to the face, in particular a make-up product, for example a lip balm, or a care product. The base 21 comprises a body 210 provided with a neck 211 in which is housed a permanent cosmetic assembly 10 according to the invention.

A cover 22 is screwed on the base 21. The assembly 10 comprises a block 2 of product and an attachment piece 4 of X axis penetrating completely into the block 2. The attachment piece 4 is provided with a tubular mounting skirt 11 that can be externally threaded or provided with a snap ring to engage the base 21. In the example shown, the mounting skirt 11 has at its upper end an annular recess 57.

The mounting skirt 11 is connected superiorly by a connecting zone 12 to a transverse wall which extends substantially perpendicular to the axis X and which defines a support structure 3.

The support structure 3 can be made by molding a thermoplastic material or otherwise, for example by cutting and / or stamping a strip.

The support structure 3 may be made of PET, POM, PA, PS, PP or PE, this list not being limiting.

For example, the support structure 3 has, as illustrated, a generally flattened shape whose maximum thickness may be substantially constant over more than half the length of the support, for example over substantially the entire length of the support structure, such as illustrated.

The length L the structure 3 is for example between 15 mm and 50 mm.

Depending on the viscosity of the product, the support structure 3 may have a convex shape.

Referring now to FIGS. 4 to 14, it can be seen that the support structure 3 is of circular section and has gripping elements 8 extending from a peripheral holding ring 7 to a central opening. 6. The retaining ring 7 is delimited by a cylindrical inner surface 71 on which are implanted, substantially perpendicularly to the axis X, the fastening elements 8 along an implantation axis Y to define a mesh of 1. The retaining ring 7 may be oblong, oval, polygonal, especially square, rectangular or triangular.

The tightening of the attachment meshes 1 makes it possible to obtain a greater or lesser elastic stiffness, which can reinforce the strength of the support structure 3.

Advantageously, the support structure 3 comprises between 4 and 20 hooks, and preferably between 6 and 15 hooks 1.

The hooks 1 may be manufactured by non-constant section, for example to achieve various types of grip, which can also strengthen the strength of the support structure 3.

The section of the attachment mesh 1 advantageously varies between 0.4 mm 2 and 1 cm 2, and preferably between 1 mm 2 and 2 mm 2.

Advantageously, the ratio of the total surface area of the bonding mesh 1 to the total surface of the support structure 3 is between 5 and 80%, and preferably between 10% and 40%. By choosing such ratios, the cosmetic assembly according to the invention is more resistant to shocks and constraints imposed by the user.

The attachment meshes preferably have an average height measured along the X axis of between 5 μm and 2 cm, and preferably between 100 μm and 1 cm.

Figures 4 to 14 show particular embodiments of the support structure 3. It is not beyond the scope of the present invention by changing the numerical values related to these figures, such as dimensions or numbers of elements.

In FIG. 4, each hooking mesh is of substantially triangular cross-section and the hooking elements 8 form bars inclined with respect to the spokes R of the support structure 3. The angle α between an axis bearing a radius R and the Y axis of implantation of a bar is of the order of 30 °.

Each hooking mesh 1 is delimited by two hooking elements 8 and by a peripheral portion 71 of the holding ring 7.

The support structure 3 has 11 hooks which define a central opening 6 of polygonal shape with eleven sides or hendecagon.

In FIG. 5, two types of hooks 1 are observed: hooks of substantially triangular cross-section alternating with meshes of substantially rectangular cross-section.

Each triangular hooking mesh 15 is delimited by two hooking elements 85 and 86 and by a peripheral portion 71 of the holding ring 7.

Each rectangular latch 16 is delimited by three attachment elements 85, 86 and 87 and by a peripheral portion 72 of the retaining ring 7.

The support structure 3 has a total of sixteen hooks that define a central opening 6 of octagonal shape.

In FIG. 6, each gripping element 8 is formed by an arc delimiting with the ring 7 a gripping mesh 1. The arcs intersect to define a succession of gripping meshes 1 formed by meshes of hook 15 of substantially triangular section and hooking meshes 16 of substantially rectangular section.

The support structure 3 has a total of 18 hooks which define a central opening 6 delimited by nine external portions of the hanging vaults 89.

In FIG. 7, each gripping element 8 is formed by an arch delimiting with the ring 7 a gripping mesh 1. The thirteen arches have rectilinear abutting portions 23 which define a contour of the central opening 6 formed by a juxtaposition of thirteen outer portions of hanging vaults 89.

In FIG. 8, each hooking element 8 is formed by an arc delimiting with the ring 7 a hooking mesh 1. The seven arches are arranged at a distance from each other and form between them a gap 29 in the form of notch. Reinforcing elements 81 in the form of an arc join two successive gripping elements 8 and define, with the gripping elements and a portion 77 of the peripheral ring, a consolidation mesh 28. The central opening 6 is delimited a succession of seven outer portions of hanging vaults 89 and seven portions of consolidation vault 810.

In Figure 9, the central opening 6 is delimited by ten gripping elements 8 in the form of a circular arc spaced from each other by a distance approximately equal to the radius of the circles. They define with the ring 7 a non-circular contour of the opening 6 having identical branches 61 extending between the attachment meshes 1.

In the example considered, the branches 61 form an angle β of 36 ° between them and are spaced regularly between them.

Preferably, the branches 61 form with the ring 7 open cavities less partially filled with product. These branches increase the adhesion of the product to the support structure 3.

In Figure 10, the central opening 6 is delimited by ten arching elements 8 in the form of arches with a spherical arch. The arches are spaced from each other by a distance approximately equal to the radius measured at the base of the arches. The outer surface of the arches defines with the ring 7 a non-circular contour of the opening 6 having branches 61 all identical to each other and extending between the stitching mesh 1.

In the example considered, the branches 20 form an angle β of 36 ° between them. They succeed each other with a regular spacing around the X axis.

In FIG. 11, the central opening 6 is delimited by nine arching elements 8 in the form of an arch with a substantially flat covering. The arches are spaced from each other by a distance approximately equal to the width of the arches measured at their base. The outer surface of the arches defines with the ring 7 a non-circular contour of the opening 6 having branches 61 all identical to each other and extending between the stitching mesh 1.

In the example considered, the branches 61 have a tapered tooth shape towards the ring 7 and connecting perpendicularly to the ring 7. They follow each other with a regular spacing of 40 ° around the X axis. The interval between two branches 61 may be, in non-illustrated variants, variable.

In FIG. 12, the central opening 6 is delimited by ten gripping elements 8 and by ten arches 79 situated at the edge of the ring 7. The fastening elements 8 are in the form of a Y-axis rod. converging towards the center of the attachment piece 4. The outer surface of the rods defines with arches 79 a non-circular contour of the opening 6 having branches 61 all identical to each other and having a flared tooth shape towards the ring 7.

In FIG. 13, the central opening 6 is delimited by eighteen gripping elements 8 and by eighteen arches 79 situated at the edge of the ring 7. The gripping elements 8 are in the form of a stick long alternating with short sticks. The contour of the opening 6 is non-circular.

In Figure 14, the central opening 6 is delimited by rods 88 forming a square 98 inscribed in the inner circle 99 and rods 87 located at the corners of the square 98. The central opening 6 is non-circular.

To use the device 1, the user grasps the device 100 and unscrews the lid 22. It puts the product block 2 in contact with the body surface it wishes to treat, such as the lips or the cheeks. It applies the product on this surface, for example by performing a back and forth movement or circular movements. It closes the device 1 by screwing the lid 3 for future use. The invention is not limited to the examples which have just been described.

The characteristics of the various embodiments can be combined with each other in non-illustrated exemplary embodiments.

The hooking elements 8 may have a whole form.

Claims (15)

1. Cosmetic assembly (10) having a longitudinal axis X comprising a block (2) of product and a gripping piece (4) made in a monolithic manner and penetrating at least partially in the block (2), the piece of hook (4) comprising a support structure (3) of the product defining a central opening (6) of axis X and connecting to a peripheral mounting skirt (11) by a connection zone (12), characterized in that that the support structure (3) comprises gripping elements (8) extending from a peripheral holding ring (7) connected to the connection zone (12), said attachment elements (8). at least partially delimiting a non-circular contour of the central opening (6). 2. An assembly according to claim 1, the attachment elements (8) forming a set of attachment meshes (1) occupying successive axial positions around the X axis, each attachment mesh (1) defining internally a single and only ajour (9). 3. An assembly according to any one of the preceding claims, the peripheral retaining ring (7) delimiting with the attachment elements (8) the contour of the central opening (6). 4. An assembly according to any one of the preceding claims, the set of mesh attachment (1) forming a row. 5. An assembly according to any one of the preceding claims, comprising consolidation elements (81) extending between the attachment elements (8) and the central opening (6) and defining consolidation meshes (28). 6. An assembly according to any one of the preceding claims, the mounting skirt (5) having an outer surface provided with a fastener, in particular a thread, a groove, a stop or a breakdown ring. 7. An assembly according to any one of the preceding claims, the attachment elements (8) being implanted along an implantation axis Y converging towards the X axis. 8. An assembly according to any one of the preceding claims, the peripheral mounting skirt (11) connecting to the retaining ring (7) by a connecting zone (12). 9. An assembly according to any one of the preceding claims, the attachment elements (8) having, in top view of the attachment piece (4), an elbow shape, an arch form, an arch form. , a circle shape, a cross shape, a lobe shape, a bar shape, a stick shape, a horseshoe shape or a hook shape. 10. An assembly according to any one of the preceding claims, the attachment elements (8) being arranged at a distance from each other or in contact with each other. 11. An assembly according to any preceding claim, the central opening (6) having, in top view of the attachment piece (4), an oblong, oval, polygonal, in particular square, rectangular or triangular, kidney-shaped, crenate, star-shaped. 12. An assembly according to any one of the preceding claims, the central opening (6) having branches (61) extending to the peripheral ring (7). 13. Assembly according to any one of the preceding claims, each mesh attachment (1) internally defining an aperture (9) at least partially filled with product. 14. A cosmetic device (100) of condétetetnent and distribution of a product comprising an assembly (10) according to any one of the preceding claims, the assembly (10) being disposed on a base (21) and capped by a cover (22) completely separable from the base (21), 15. A method of manufacturing a cosmetic assembly according to any one of claims 1 to 13, comprising the steps of: (i) providing a fastener (4) of the assembly (1), (il) Turn the attachment piece (4) by rotating it 180 ° about an axis, (iii) Place a mold of chosen shape under the hanging piece (4), (iv) Inject the product into the mold by passing through the attachment piece (4), (v) Allow the product to solidify in the mold, (vi) Unmold, (vii) Turn the attachment piece (4) by rotating it from 1806 around an axis.