MXPA97001458A

MXPA97001458A - An advanced design brush for applying cosmetic products, particularly masc

Info

Publication number: MXPA97001458A
Application number: MXPA/A/1997/001458A
Authority: MX
Inventors: H Gueret Jeanlouis
Original assignee: L'oreal
Priority date: 1996-02-29
Filing date: 1997-02-26
Publication date: 1998-04-01

Abstract

The present invention relates to a brush for the application of a cosmetic product to keratinous fibers, comprising: an elongated core, and bristles extending substantially radially from said core, wherein said bristles define a part of a cylindrical shell with an axis central, and wherein the bristles within the axial boundaries of the cylindrical shell form at least one concave recess and in at least one crest region of the cylindrical shell, the width of the at least one concave recess, varies along the length of the concave recess. length of the brush, the at least one concave recess having a single maximum width

Description

11 ADVANCED DESIGN BRUSH FOR APPLYING COSMETIC PRODUCTS, IN PARTICULAR MASK The invention relates to a brush to apply cosmetic products to keratinous fibers, in particular to apply mascara to the lashes or dyes to hair, and is also related to a makeup applicator device which comprises this brush. More often the brush is composed of an elongated core that is formed by helically winding two sections of metallic wire, and of bristles implanted radially in the core and held tightly between the wound sections, being "that the brush has at least one recess" concave «that retains the product during rubbing against the scraper. FR-A-2605 505 shows a brush of this type that allows the product to be applied to be collected properly. The product is located in a tank whose outlet, which the gap passes through, is provided by a scraper element that aims to limit the product load "collected by the bristles. Of "conformity" with the previous document, the edges or edges "that delimit the recess are substantially straight. A brush in accordance with this prior art makes it possible to obtain relatively different make-ups, according to the zones of the brush and the edges "that are used, and according to the movement" that is imparted to the brush; for example, the user can obtain a relatively thick makeup if she has not rotated the brush around herself at the time of application, REF: 24137 but then the lashes will not be perfectly separate. In addition, she can obtain a light make-up if she rotates the brush around her e ^ e, thus using the edges that delimit the recess. In all the modalities of use it will be observed in the applied makeup, a difference between the eyelashes located in the periphery of the eyelid and those located in the center of the eyelid, which are better charged, better curved and / or better separated than the lashes in the sides of the eyelid. Document FR-A-2715038 describes brushes with a recess «that allow, on the one hand, to better extend the product in the place where it is intended to be applied, and obtain wide variations of the rubbing against the brush and to improve the ergonomic characteristics of the makeup, and on the other hand use only a single scraper, and a unique diameter of the rod, while offering the possibility to vary considerably the load on the eyelashes without basically modifying the elegance of the brush. This result is obtained on the one hand due to the "general contour of the brush, which is a double trunk of coaxial cones that join at their bases of larger size with the same diameter, and on the other hand due to the fact that the edges or edges that define the recess are not straight The makeup that is obtained with this type of brush is usually characterized by a thick load at the base of the eyelashes, and a small curvature of the eyelashes.

Although prior art brushes give satisfactory overall results, it has been found desirable to provide brushes that allow the possibility of obtaining a make-up with a strong curvature because it is correctly positioned at the end of the flange and is strongly loaded, which can not be done with prior art brushes It is also an object of the invention to provide a brush that remains simple and economical to manufacture, and convenient in use. A first aspect of the invention provides a brush to apply a cosmetic product to the keratinous fibers, which is composed of an elongated core with bristles implanted radially in the core, in which the brush comprises at least one concave recess with a dimension (?) of greater length, characterized in that it comprises larger bristles contained in a cylindrical shell with a central axis II and defining at least one z crest ona, being that the width (1) of the recess varies from one end to the other of the brush, passing through a single maximum width (L) between the ends. In this way, the user has at her disposal a brush "that has the recess formed by shorter bristles, which are more heavily loaded with mask The intersection of the cylindrical envelope with the recess defines a side with a concave contour which, in contrast to the brushes of the prior art, follows the contour of the assembly of eyelashes of an eyelid. In this way, when the user applies the brush to the eyelashes in the region of the recess, she loads the base of the mascara tabs over the entire width of the eyelid and, later, by having the brush rotate about its central axis, spread the mask over the entire length of each tab at the time of combing the lashes and separating all the lashes all along them. A brush of this type allows to obtain a makeup that simultaneously presents the qualities of being copious, uniform, and that lengthens and curves the eyelashes. This brush is completely suitable for the makeup of the eyelashes; therefore, a second aspect of the invention also provides a makeup device consisting of a mask reservoir and a mask applicator, and characterized in that the applicator comprises a brush in accordance with the first aspect. Preferably, the core is formed by the helical winding of two lengths of metallic wire, with the bristles held tightly tight between the wound-up portions of the core. Preferably, the re or rees are formed by cutting the brush. The axis of the cylinder that surrounds those bristles that have the greatest dimension, is defined as the central axis of the brush. Advantageously, the contour of the re comprises at least one edge with a substantially rounded shape, "which preferably runs substantially parallel to the central axis of the brush. The outline of the re defines an edge that is more frequently acute. but which can be cut to give a rounded shape The re has a depth (d) greater than it is preferably selected to be less than or equal to its largest width (L), and which is located in the center of the re, so you can better follow the contour of the tab. Advantageously the major axis (which has the length?) Remains substantially parallel to the axis of the brush. Preferably, the minor axis (L) of the re is maintained substantially perpendicular to the axis of the brush, and (L) is less than or equal to the length (?) Of the major axis of the re, so that it can better follow the «Contour of the tab. Preferably, the re is symmetrical with respect to a plane «passing through the minor axis (whose maximum width is L), and perpendicular to the central axis. The ends of the brush can have any shape; You can, for example, have a straight section perpendicular to the central axis, or a "spherical" cap or a conical trunk whose axis coincides with the central axis of the brush and whose base has the same diameter "as the base of the surrounding cylinder. The brush can have several rees located along different planes or surfa with two adjacent rees "that determine between them at their contours at least one crest area of variable width (the width of a ridge area is measured throughout of a direction perpendicular to the central axis of the brush). Furthermore, the bristles of the brushes according to the invention can be of any type: with ends that end in a tip, or with a fork shape, or in the form of pinheads, or they may have undergone any kind of treatment known per se. The experts. Apart from the arrangements listed in the foregoing, the invention consists of a number of other arrangements which will be discussed in greater detail in what follows in connection with some examples of embodiments which are described with reference to the accompanying drawings. , without this being limiting in any way. Figures 1 to 3 show a brush according to the invention, in side view; Figure 2 is a view of the brush of Figure 1 after "having been rotated" in "about 90Q around the central axis I-I; Figure 3 is derived from a second rotation < Sn by approximately 90Q around the same axis. Figure 4 shows a brush according to the invention in transverse section along the plane IV-IV of Figure 1, perpendicular to the axis I-I. Figures 5 to 7 show a brush according to the invention, in the course of being used to apply a mask to the eyelashes of an eyelid.

Figure 8 shows a brush according to the invention in which the density of the bristles varies along the core. Figure 9 shows a device for eye makeup, in longitudinal section. Referring to Figures 1 to 4. you can see in them a brush 1 for the application of a cosmetic product, in particular to apply a mask to the eyelashes, which comprises an elongated core 2 formed by the helical winding of two sections of metallic wire 3 «that was bent in U before the sections were twisted. The core 2 is fixed by forced adjustment at the end of a handle t. The bristles 4 are implanted radially between the sections of the wire 3. When the sections of the wire 3 are twisted, the bristles are held and held in position tightly between the helical turns of the core 2. The core 2 can be central, "Which means that the core 2 defines an axis that coincides with the central axis II of the brush, as in the Figures, but on the other hand it could also be eccentric. The bristles 4 may be of natural or synthetic fibers, and may possibly be flocculated; brush 1 can consist of a mixture of bristles of different types (different diameters, contours or shapes, cross sections). The wraparound surface of the brush is a cylinder with a central axis I-I. The brush 1 has a flat rear end 6 perpendicular to the axis II and a frustoconical front end 5 coaxial with the axis II, and having a base having the same diameter «of the cylinder that wraps the brush and is attached to the flat section 10 of the cylinder so as to remain perpendicular to axis II. In its circumference, the brush has three concave 7 recesses delimited by 8 oval contours of depth d and length? of the major axis, and with a width L greater (minor axis) so that? > L > d. The contours 8 of the recesses have two rounded edges 8a and 8b, substantially parallel to the axis I-I. The contours of the recesses define ridge surfaces 9 which belong to the brush surround cylinder. In the example shown, the contour of the recess is oval, but nevertheless it can also be circular (? SL). elliptical, or is constituted by two portions of intersecting circles whose concavities face each other. The contours 8 of the recesses 7 define sharp edges 11 with ridge surfaces 9. The recesses 7 are obtained by cutting the brush 1, that is. «Cut the bristles 4 of this brush with a cutter. Each of the recesses 7 is located on the same side of the brush; in this way they are not intersected by the core 2. In the Figures, the contours 8 of the recesses 7 do not reach the final planes 6, 10 or ends of the cylinder, but in a variant, it could be foreseen that the recesses were tangential with or "intersecting these extreme planes In Figures 5 to 7, same as illustrating the method of use of the brushes according to the invention, the elements identical to, or that perform the same functions as the elements described in the above , will be designated with the same reference numbers Your description will not be repeated, or will only be briefly discussed For simplification purposes, the brushes shown in these Figures only have a single recess, but nevertheless their operation would be the same if they had several In Figure 5 you can see the whole set of eyelashes of the eyelid C, which are being attacked by the shorter bristles of the brush located in the recess 7 cavo, bristles that are heavily loaded with mask On contact with these bristles, the end of the root of the eyelashes will also be heavily loaded with mask When the user causes the rotation of the brush 1 on itself around its axis (Figure 6). the shape or contour of the recess ensures "that the eyelashes remain in" contact with the brush over its entire length, and continue to be charged at the time of «which are curved by the brush. The longer bristles on the edge 11 begin to comb the flange. When the user proceeds with the rotation of the brush (Figure 7), the eyelashes become tainted by the "longer bristles of the ridge zone 9, bristles" that have a cylindrical sheath and extend the product to all along each tab at the time of combing. If the brush has several recesses, these operations of loading and styling are repeated several times in the course of a complete rotation of the brush. Each tab is loaded over its entire length; there is no makeup difference between the eyelashes that are on the sides of the eyelid and those that are in the center; the eyelashes are perfectly separated one from the other, elongated and curved upwards. In the Fi «gura? a mask applicator brush will be seen which differs from that shown in Figures 1 to 4 in relation to the density of the bristles; the recesses 107 are located in areas of low density of bristles, which allows them to individually carry even more mask, and the extreme zones 112 and 113 of the brush, as well as the ridge areas 109, have a higher population density. high bristle, which makes it possible to enhance the efficiency of combing and the separation of the lashes. To obtain a makeup still more heavily loaded, in another variant it can be foreseen «that the crest areas alternately comprise rows of short bristles and long bristles. The eye makeup device "shown in Figure 9 has a cylindrical tank 220 having a threaded neck 224 which is fitted with a gasket 226, and is filled with mask 215. The tank 220 has a scraper 221 on its neck, the support of the scraper inside the neck being secured by an eyebrow 228 that cooperates with the shoulder that separates the neck of the reservoir itself. In known manner, the scraper 221 consists of an elastic and flexible material. An applicator has the task of cooperating with the reservoir 220. This applicator is constituted by a grasping means or handle 223 supporting the applicator element 230 comprising a trunk 222 and a brush 201, identical to those shown in Figures 1 to 4 The grip means 223 has the shape of a cap, and has a thread 223a "cooperating with the thread 224a of the neck of the tank. The tight seal of the tank 220 is obtained by proceeding in a manner in which the gripper 223 is screwed onto the neck 224 of the tank, which neck is provided with its packing 226. When the applicator element 230 is removed from the tank, the brush loaded with a mask passes through the scraper 221"which rubs the long bristles" of the ridge areas much more extensively than the short bristles of the recess. The applicator element according to the invention can then be used to load the tabs. It is stated that in relation to this date, the best method known by the solicitsute, is the conventional one for the manufacture of the objects to which it refers. Having described the invention as above, the content in the following is claimed as property

Claims

CLAIMS 1. A brush to apply a cosmetic product on keratotic fibers, which consists of an elongated core and bristles radially implanted in said core; the brush comprises at least one concave recess having a dimension of greater length. characterized in that it comprises longer bristles contained in a cylindrical envelope with a central axis and defining at least one ridge area, the width of the recess varying from one end of the brush to the other and passing through a single maximum width between these extremes. A brush according to claim 1, characterized in that the core is formed by the helical winding of two lengths of metallic wire, and in that the bristles are held tightly between the wound portions of the core. 3. A brush according to any of the preceding claims, characterized in that the recess is formed by trimming the brush. 4. A brush according to any of the preceding claims, characterized in that the recess has a contour that has at least one substantially round edge "sada". 5. A brush according to claim 4, characterized in that "the edge is substantially parallel to the central axis. 6. A brush according to any of the preceding claims, characterized in that the recess has a greater depth that is less than or equal to its greater width, and is located substantially in the center of the recess. A brush according to any of the preceding claims, characterized in that the major axis of length is substantially parallel to the axis of the brush. 8. A brush according to any of the preceding claims, characterized in that the core defines an axis that coincides with the central axis of the brush. 9. A brush according to any of the preceding claims, characterized in that the axis "of the greatest width of the recess is substantially perpendicular to the axis of the gap. A brush according to any of the preceding claims, characterized in that the maximum width is less or equal to the greater length of the recess. 11. A brush according to any of the preceding claims, characterized in that the recess is symmetrical with respect to the plane passing through the maximum width: and perpendicular to the central axis. 12. A brush according to any of the preceding claims, characterized in "comprising several recesses. 13. A brush according to any of claims 4 to 12, characterized in that the contour has at least two rounded edges substantially parallel to the central axis. A brush according to any of the preceding claims, characterized in that the contour of the recess is oval, circular, elliptical or is constituted by two intersecting circle portions whose concavities face one another. 15. A brush according to any of the preceding claims, characterized in that the contour of the recess defines a sharp edge. 16. A brush according to any of the preceding claims, characterized in that the recesses are located in a zone with low density of bristles, and in that the extreme zones of the brush and the areas of the ridge have a greater density of bristles . 17. A brush according to any of the preceding claims, characterized in that "the ridge areas have alternate rows of shorter bristles and longer bristles. 18. A brush according to any of the preceding claims, characterized in that the bristles of the brush have ends that end in a tip, ends in the shape of a fork, or ends in the shape of a pinhead. 19. A brush according to any of the preceding claims, characterized in that it also comprises a grip handle. 20. A device comprising a mask reservoir and a mask applicator, characterized in that the applicator comprises a brush according to any of the preceding claims. 21. A device according to claim 20 comprising a cap for closing the reservoir in a hermetic manner, characterized in that the cap holds the applicator.