JP2018501044A - Cosmetic applicator with fibers - Google Patents

Abstract

The present invention is an applicator member supported by a handle and having a plurality of fibers (11), each fiber (11) having a hollow cylindrical body (13) and at least one longitudinal Directional ribs (17) having at least one longitudinal rib (17) attached to the body by a base (23) thereof, each fiber (11) comprising: It relates to an applicator where the cross section is not axisymmetric and is inscribed in a circle (C) with a diameter D2 such that the ratio D2 / D1 is 1.75 or less, where D1 is the maximum outer transverse dimension of the body (13).

Description

  The present invention relates to an applicator for applying a cosmetic product to human keratin materials, in particular eyelashes and / or eyebrows, nails or lips, and a device comprising the applicator and a reservoir for the cosmetic product. The present invention also relates to a cosmetic treatment method using the applicator.

  More particularly, the present invention relates to an applicator comprising a handle and an applicator member having fibers at one end of the handle for applying a product to the keratin material.

  Numerous applicators of this type are known in which the brush has a core formed by two arms of metal wire that are twisted together to grip the fibers, or has fibers that form a bundle of substantially parallel fibers. ing.

  Patent Literature 1, Patent Literature 2, and Patent Literature 3 describe an applicator having a hollow cylindrical fiber having a circular cross section or a square cross section.

  Patent Document 4 relates to a fiber having at least one recess and having a spiral groove.

  U.S. Patent Nos. 5,099,036 and 5,037,697 relate to fibers having two longitudinal cavities.

  Patent document 7 describes a fiber having a symmetrical shape along its longitudinal axis and a hollow cross section. This fiber has a hollow body that takes the form of a cylinder of revolution and six identical protruding undulations that have a substantially rectangular shape in cross-section, the undulations being external to the body. And is evenly distributed around the body.

  Patent document 8 is related with the applicator which has a fiber. Each fiber has a central core, and the central core has at least two fringes on its surface. The latter can be evenly distributed and curved around the fiber core. Preferably, the central core is hollow.

French patent application No. 2898782 French application 2847436 Belgian patent application 638856 European Patent Application No. 2796532 US Patent Application Publication No. 2005/0268415 European Patent Application No. 0130611 International Application No. 2012/137134 European Patent Application No. 1034722

  There is a need to further improve applicators for applying cosmetic products to human keratin materials.

Accordingly, one subject of the present invention is an applicator for applying a cosmetic product,
・ With the handle
An applicator member supported by a handle and having a plurality of fibers, each fiber being
A hollow cylindrical body, and at least one longitudinal rib, the applicator member having at least one longitudinal rib attached to the body by its base;
Have
Each fiber is inscribed in a circle with a diameter D ₂ such that the cross section is not axisymmetric and the ratio D ₂ / D ₁ is 1.75 or less, where D ₁ is the largest outer transverse dimension of the body Is.

  The hollow cylindrical body has a closed profile in cross section.

  The fiber having a hollow cylindrical body makes it easier for the fiber to deform, particularly when the fiber is secured to the applicator member. The hollowness of the fibers can also increase the product retention.

  The presence of one or more longitudinal ribs also improves the holding power of the product, particularly by capillary action, in the case of a mascara brush and affects its orientation while the fiber is fixed to the core. Can help.

  The particular cross section of the fibers according to the invention is particularly advantageous when the fibers are clamped between two twisted metal strands and used to produce a mascara brush. In this case, the fibers according to the invention tend to be oriented in a random direction, thereby breaking the spiral effect on the brush and the loading and separation of eyelashes and / or eyebrows. Thus, it becomes possible to obtain an improvement in performance.

The ratio _D 2 / _{D 1} may be 1.5 or less.

  Each fiber may have at least two ribs, and better still at least three ribs. The number of ribs may be 10 or less, and better still 5 or less.

  Preferably, at least one rib extends inside the body. This may make it possible to limit the deformation of the fibers due to crushing and thus modify the behavior of the fibers, depending on the orientation of the fibers with respect to the core strand holding the fibers.

  Preferably, at least one rib extends outside the body. Having at least one external rib for the fiber makes it possible to have a surface relief that allows better holding power of the cosmetic product.

  The applicator may have at least one rib extending inside the body and at least one rib extending toward the outside of the body. In one variation, all the ribs extend inside the body or all the ribs extend outside the body.

  All the ribs may have the same shape. In one variation, the at least one rib has a different shape than the rest.

  The one or more ribs may extend along the entire length of the fiber along an axis parallel to the longitudinal axis of the fiber. The one or more ribs are preferably continuous along the fiber.

  Preferably, each fiber has the same cross section along its entire length. This allows the fiber to have certain mechanical properties along its entire length, making it easier to make by extrusion.

  The ribs may be evenly distributed around the body.

  The one or more ribs may have a substantially polygonal shape in cross section, in particular a triangular shape, a rectangular shape, or a square shape, or may have a round shape, in particular a semicircular shape.

  In cross-section, the thickness of the rib at its radially outermost free end, measured radially at the base of the rib connected to the body, may be between 0.01 and 0.06 mm.

  In cross section, the maximum width of the ribs measured perpendicular to the thickness may be between 0.01 and 0.06 mm.

  The hollow body of fibers may define a single cavity.

  The thickness of the wall of the hollow body may be constant.

  When viewing the fiber with its linear longitudinal axis, it is possible that the outer surface of the body does not have a recess.

  The body has a cross-section that takes the form of a regular or irregular polygon, circular or non-circular, in particular an oval, oval, kidney bean, pear or cross-shaped cross section. Good.

Maximum dimension _{D 1} in the cross section of the body may be between 0.07 0.25 mm.

  The fiber may be a plastic material, preferably a thermoplastic material, in particular polyamide (PA), elastomer, polybutylene terephthalate (PBT), rubber, or a mixture thereof, in particular a mixture of PA, PBT and rubber, or an elastomer and PA. It may be made of a mixture.

  The fibers are preferably made of a single material.

  The applicator may have fibers with different shapes. For example, the applicator has two types of fibers, each type of fiber according to the invention.

  Different types of fibers may be mixed randomly or systematically on the applicator. For example, the first part of the applicator has only a first type of fiber and the second part of the applicator has only a second type of fiber.

  The invention is advantageously applied to a twisted wire brush, but the applicator alternatively has a bundle of substantially parallel fibers and is a baleen type brush or finer. A brush may be formed. In that case, the handle of the applicator may be substantially parallel to the fibers. In one variation, the handle is substantially perpendicular to the fiber, as in the case of a twisted wire brush.

Further subject matter of the present invention is:
-A reservoir containing the cosmetic product to be applied;
A packaging and application device with the applicator according to the invention as defined above.

  A further subject matter of the present invention is a cosmetic treatment method comprising the step of contacting the applicator according to the present invention with human keratin material, in particular contacting the eyelashes, eyebrows, nails, lips or skin depending on the nature of the product. .

  The invention can be better understood from reading the following detailed description of its non-limiting exemplary embodiments and from examining the accompanying drawings.

It is a figure which shows an example of packaging and an application | coating device roughly. It is a figure which shows the deformation | transformation form of a fiber in a cross section. It is a figure which shows the deformation | transformation form of a fiber in a cross section. It is a figure which shows the deformation | transformation form of a fiber in a cross section. It is a figure which shows the deformation | transformation form of a fiber in a cross section. It is a figure which shows the deformation | transformation form of a fiber in a cross section. It is a figure which shows the deformation | transformation form of a fiber in a cross section. FIG. 6 is an elevational view of another example of an applicator.

  The packaging and application device 1 shown in FIG. 1 is provided with a container 2 for accommodating a cosmetic product P, for example mascara, applied in particular to the eyelashes or eyebrows, and an applicator member 5 at one end 4a and a container 2 at the opposite end. And an applicator 3 having a handle 4 with a longitudinal axis X provided with a gripping member 6 which also serves to close the. The latter has a neck 7 threaded externally so that the gripping member 6 can be screwed on.

  A wiping member 8 is secured to the inside of the neck 7 to wipe the handle 4 and applicator member 5 when they are pulled out of the container 2. The wiping member 8 has a flexible lip 9 that defines a circular wiping orifice, the diameter of which corresponds approximately to the diameter of the handle 4.

  Of course, the present invention is not limited to the use of a particular wiping member, and additional wiping members, such as wiping members having corrugated lips and / or having one or more slits may be used.

  In the illustrated example, the handle 4 is straight, but the handle 4 can be curved without departing from the scope of the present invention.

  In this example, the applicator member 5 has a core 10 which is conventionally formed by two twisted metal strands, and this core 10 is fitted at one end to the housing in the handle 4, for example press fitted to this housing. Combined and fixed.

  The applicator member 5 has fibers 11 that are held so as to be clamped between the twisted strands of the core 10.

  As can be seen in particular in FIG. 2, each of these fibers 11 has a hollow body 13 having a cylindrical shape, through which a central cavity 15 passes in the longitudinal direction. Is provided with at least one longitudinal rib 17.

Each fiber 11 is inscribed in a circle C, and its diameter D ₂ is such that the ratio D ₂ / D ₁ is 1.75 or less, more preferably 1.5 or less, and D ₁ is the main body 13 maximum outer transverse dimensions.

  In the example shown in FIG. 2, the fiber 11 has a main body 13 in the form of a rotating cylinder and three identical ribs 17 having a substantially rectangular shape, which ribs 17 Are equally distributed angularly.

  The cross section of the fiber 11 is not symmetrical about its center, and in the example shown, the fiber is an image of itself with a 120 ° rotation.

The body 13 has a constant thickness e between its outer surface 21 and inner surface 19, for example between 0.01 and 0.08 mm, and an outer diameter D ₁ between 0.07 and 0.25 mm, It has a closed circular cross section.

  The longitudinal rib 17 extends along the entire length of the fiber 11 and is continuous.

  In cross section, the maximum thickness h at the end 25 of each rib 17 measured at the base 23 of each rib 17 connected to the body 13 is between 0.01 and 0.08 mm.

  The maximum width L of each rib 17 in the cross section is between 0.01 and 0.08 mm.

  While being clamped between the core metal strands, the fibers 11 are variously oriented depending on their cross-sectional orientation relative to the strands. A random modification of the fiber orientation can thus be achieved and the spiraling effect detrimental to applicator performance can be reduced.

  The example of FIG. 3 differs from that of FIG. 2 in that the ribs 17 each have a substantially semicircular shape.

  The example of FIG. 4 differs from that of FIG. 3 in that the body 13 of the fibers 11 in this case has a hexagonal, polygonal cross section. The ribs 17 exist, for example, on every other side, and are centered on the side corresponding to each of them.

The example of FIG. 5 differs from that of FIG. 2 in that the fiber 11 has ribs 17a and 17b having different shapes and that the body 13 has a non-circular cross section, in particular an elliptical shape. Different. The ribs 17a have a round, in particular a semi-oval shape, and the ribs 17b have a substantially triangular shape and are located away from the ribs 17a. Ribs 17a and 17b may have a different maximum width _{L a} and _{L b,} and different maximum thicknesses _{h a} and _{h b.}

  The ribs 17 a and 17 b are disposed on both sides of the long axis M of the main body 13.

The example of FIG. 6 differs from that of FIG. 2 in that the ribs 17 extend toward the inside of the main body 13. The diameter _{D 1} is equal to the diameter _{D 2.}

  Such ribs 17 make it possible to correct the collapse of the fibers in several directions.

  The example of FIG. 7 is different from that of FIG. 2 in that it has both a rib 17 e extending toward the outside of the main body 13 and a rib 17 i extending toward the inside of the main body 13. The ribs 17i have different shapes, for example, one having a triangular cross section as shown, and the other having a rectangular cross section. Such fibers make it possible to combine the effects associated with the presence of internal and external ribs, i.e. the effect of allowing a good holding power of the product with the effect of breaking the spiral effect.

  FIG. 8 shows an applicator having a handle 4 with a longitudinal axis X provided with an applicator member 5 at one end 4a and a gripping member 6 at the opposite end, the applicator member 5 being substantially Is formed by a bundle of fibers 11 parallel to each other.

  The invention is not limited to the exemplary embodiments that have just been described, but the features of the various examples can be combined with each other within variations not described.

  The present invention is not limited to the illustrated rib shape.

  The fiber body may have a circular shape, an oval shape, or a polygonal shape, but is not limited to these shapes.

  The expression “having one” should be understood to be synonymous with “having at least one” unless stated to the contrary.

DESCRIPTION OF SYMBOLS 1 Packaging and application device 2 Container, reservoir 3 Applicator 4 Handle 4a One end 5 Applicator member 6 Gripping member 7 Neck 8 Wiping member 9 Flexible lip 10 Core 11 Fiber 13 Hollow main body, hollow cylindrical main body 15 Central cavity 17 Longitudinal rib 17a Longitudinal rib 17b Longitudinal rib 17e Longitudinal rib 17i Longitudinal rib 19 Inner surface 21 Outer surface 23 Base 25 End C circle D ₁ Maximum outer transverse dimension, maximum dimension, outer diameter D ₂ diameter e Thickness h Maximum The thickness h _a maximum thickness h _b maximum thickness L the maximum width L _a maximum width L _b maximum width M long axis P cosmetic product X longitudinal axis

Claims (14)

An applicator (3) for applying a cosmetic product,
-Pattern (4),
An applicator member (5) supported by the handle (4) and having a plurality of fibers (11), each fiber (11) being
A hollow cylindrical body (13), and at least one longitudinal rib (17; 17a, 17b; 17i, 17e), at least attached to said body (13) by its base (23) One longitudinal rib (17; 17a, 17b; 17i, 17e),
An applicator member (5) having:
Have
Each of the fibers (11) is in cross-section rather than the axisymmetric, inscribed in the ratio _D 2 / _{D 1} is such a diameter _{D 2} of the circle at 1.75 (C), _{D 1} is the body (13 The applicator (3), which is the largest outer transverse dimension). The ratio _D 2 / _{D 1} is 1.5 or less, applicator according to claim 1 (3).   Each fiber (11) has at least two longitudinal ribs (17; 17a, 17b; 17i, 17e) and better still at least three longitudinal ribs (17; 17a, 17b; 17i, 17e) Item 3. The applicator (3) according to item 1 or 2.   The applicator (3) according to any one of claims 1 to 3, wherein the number of longitudinal ribs (17; 17a, 17b; 17i, 17e) is 10 or less, better still 5 or less.   The applicator (3) according to any one of the preceding claims, wherein at least one longitudinal rib (17; 17i) extends inside the body (13).   The applicator (3) according to any one of the preceding claims, wherein at least one longitudinal rib (17; 17a, 17b; 17e) extends outside the body (13).   The applicator (3) according to any one of claims 3 to 6, wherein the longitudinal ribs (17; 17a, 17b; 17i, 17e) are all of the same shape.   The applicator (3) according to any one of claims 3 to 6, wherein the at least one longitudinal rib (17; 17a, 17b; 17i, 17e) is of a different shape than the rest.   The applicator (1) according to any of the preceding claims, wherein the longitudinal ribs (17; 17a, 17b; 17i, 17e) are distributed angularly evenly around the body (13). 3).   10. Application according to any one of the preceding claims, wherein one or more longitudinal ribs (17; 17a, 17b; 17i, 17e) extend along the entire length of the fiber (11). (3).   The applicator (3) according to any one of claims 1 to 10, wherein the thickness (e) of the wall of the body (13) is constant.   One or more of said longitudinal ribs (17; 17a, 17b; 17i, 17e) have a substantially polygonal cross-section, in particular a triangular, rectangular or rectangular shape, or a round shape; 12. Applicator (3) according to any one of the preceding claims, in particular having a semicircular shape.   The applicator (3) according to any one of the preceding claims, having a core formed by two strands of metal wire to be twisted together, the fibers (11) being clamped between the strands. ). A reservoir (2) containing the cosmetic product to be applied;
An applicator (3) according to any one of the preceding claims,
A packaging and application device (1).

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