JP2019525816A - Applicator device for applying liquid or paste keratin fibers - Google Patents

Abstract

The present invention is for applying a flowable or pasty product to keratin fibers comprising an elongated central core (1) extending along a longitudinal axis XX and at least one row of elongated spikes (2). The present invention relates to an applicator device. This includes a first end (20) embedded in the core and / or a flexible stem (3) embedded in the central core at two points, a second free end (21), a spike (2) includes a stem (3) and a core (1), which are integral, i.e., integrally formed. According to the invention, all or part of the spikes are part of a row having a surface (a) belonging to a surface (b) that is helically curved around the axis XX.

Description

  The present invention relates to a fluid or pasty cosmetic, a mascara type on-site applicator device. The present invention more particularly relates to a cosmetic device or applicator.

  A number of mascara applicators are already known in the prior art. The applicator itself can be, for example, an elongated brush having a central core with bristles or spikes in an array of bristles therefrom. Hair belongs to the old technology. The twist wire holds the hair laterally. An example of application is shown in US Pat. No. 5,61,361.

  More recently, the applicator device is in the form of a brush that includes a series of pins recessed over the longitudinal core of the brush. This assembly is molded from plastic. Thus, the applicator device forms a suitable reservoir into which it is inserted, a cosmetic dispenser. French Patent No. 2,810,860 and WO 2011/045770 show some examples of applicators from this concept.

  A disadvantage of the applicator device, i.e. the brush, the prior art, is that the pin does not allow the correct transfer of the cosmetic product on the pin from the reservoir and the proper application of the product to the keratin fibers. Make it longer, thicker, or separated.

  Contemplated by prior art solutions to improve the support mascara brush is the use of a pin with a flat surface to collect the mascara, while the non-flat surface is involved in eyelash separation . EP 1 877 682 describes such a brush. The pins are arranged in a row parallel to the longitudinal axis of the brush, all the pins in the row are aligned with the flat surface on the same side of the plane and the non-planar surface is on the same side of the line. Thus, the brush prints the movement of the brush in a direction perpendicular to the longitudinal axis of the brush while rotating the brush.

  This type of brush does not exhibit maximum efficiency because a lash having an essentially curved geometry is not optimally placed in front of the eyelashes when the user imparts rotational motion to the row of brush pins. Transition to road mascara. This type of brush requires the user to pass the eyelashes many times while reversing the rotational motion of the brush to ensure that the mascara with sufficient charge is restored.

  Slightly differently, WO 2009/141098 A1 discloses an applicator having a plurality of pins in a row extending upwardly from the top of a twisted blade around the main core. A thorn quickly loses contact with its eyelashes placed on a complex curvature segment when the user imparts a slight rotation to the device. Even if the slide carrying the pin moves helically along the body, the pin remains aligned on a line parallel to the main axis of the applicator device. This is therefore not satisfactory.

  The French 2,969,470 B1 patent is also known and discloses a cosmetic applicator device comprising an elongated web extending along a longitudinal axis XX. The device further includes at least one flexible and flexible rod that is longitudinally oriented and embedded in at least first and second points on the core. This flexible bar supports the thorn. These pins are positioned in the direction of the longitudinal axis XX. These pins are aligned on the same line parallel to the main axis XX of the applicator device. The thorn loses contact with the eyelash as soon as the user gives a slight rotation to the device, the latter being placed on a complex curvature segment.

  Although this solution provides some improvement over the prior art, load transfer is not performed regularly and quickly. This is therefore a serious drawback.

  The French Patent 2,982,466 B1 patent is also known and applies a liquid or paste product to keratin fibers comprising a core or technically equivalent element extending along an elongated first longitudinal axis XX. An apparatus for doing so is disclosed. A plurality of elongated pins extend along the second longitudinal axis Y-Y. The barb has an organized roughness defined by a plurality of simple or combined microgeometric shapes formed with a positive or negative relief against the outer surface of the pin.

  Therefore, development and improvement may be necessary, especially in the configuration of the pin array. The orientation of the row of pins must contribute to both the improvement of the filler product and the separation of the eyelashes or keratin fibers.

US Patent No. 5,61, 1361 French Patent No. 2,810,860 International Publication No. 2011/045770 EP 1,872,682 International Publication No. 2009 / 141098A1 French Patent No. 2,969,470B1 French Patent No. 2,982,466B1

  The present invention overcomes the disadvantages of the prior art, and in particular provides an applicator device that can retain the same product after passing through a wiper while capturing the maximum amount of cosmetic product when in contact with it. The purpose is to do. The wiper is a small piece that is placed on the mouth liquid container and is suitable for removing excess cosmetics picked up by the applicator itself.

  Accordingly, the present invention provides a liquid or paste on keratin fibers that includes an elongate central core extending along a longitudinal axis XX, and wherein at least one row of elongate pins includes a first embedded end on the core. The present invention relates to an apparatus for applying a mold product. And / or the flexible rod embedded at two points on the central core and the second free end, pin or stem and core are unitary and are formed in one piece.

  To do this, according to the first aspect of the invention, all or part of the pins forming part of the row are surfaces (a) belonging to the helically curved surface (b) about the axis XX. ) Is proposed.

  A helically curved surface means a curved surface and is defined longitudinally and outwardly by a first wound in a first spiral around a longitudinal axis XX. Defined longitudinally and inwardly by a second helix. A curved surface is a virtual surface and is used here to define geometrically the characteristic elements of the present invention.

  More specifically, the helical surface (b) is further defined between first and second transverse axes Y, Y ′ with an angular offset between 1 ° and 720 °.

  The characteristic surfaces of the pins and the spiral surface (b) to which they belong help to guide the eyelashes accurately and smoothly while capturing and maintaining the maximum amount of cosmetic product after passing through the wiper.

  Interestingly, at least one flexible rod has a helically shaped part of the helical surface defined above.

  Further, all or part of the pins each have at least one recess or negative relief defined by a helical surface.

  Furthermore, all or part of the pins each have at least one positive or raised terrain. This protrusion makes it possible to increase the cosmetic support surface.

  These features of the elements of the present invention are that the pin presents a face and / or depression and / or appropriate protrusion learned from a prescription makeup placed in front of the eyelash whenever the user performs a makeup gesture Make it possible. Conveniently, when the user prints a slight rotational movement on the device, the rows generally arranged along the helical pin are always placed facing the eyelashes or other keratin fiber makeup or treatment. Cosmetics held on the inner surface of the pin or in a recess located on the pin are transferred directly to the keratin fibers without the user having to change and modify the position of the device relative to the eyelashes.

  According to another feature of the invention, the device includes a number of rows that are substantially arranged according to a number of different surface helical pins.

  The pins can have different heights according to their position on the core and / or flexible rod.

  Advantageously, the pins may be embedded in the maximum dimension of their free ends and are preferably adjacent. In this way, a kind of continuous blade can be formed, the main inner surface being a part of the spiral curved surface.

  Furthermore, the device may comprise a plurality of longitudinal regions with different arrangements of studs, at least one of said regions being provided with pins aligned along axis XX.

  According to one embodiment of the invention, the device comprises at least one flexible rod on a first part of its length and a pin arranged on the core up to a second part of its length. .

  According to another embodiment of the invention, the flexible rod forms a first assembly and a second assembly, wherein the rod of the first assembly is within the distal end of the core and substantially of the core. Embedded in the center. The second assembly is embedded substantially in the center of the core and the proximal end of the core.

  Interestingly, the monolithic device is preferably an injection-molded multi-material with two or three injection materials. Preferred materials are, for example, thermoplastic polymers or thermoplastic elastomer polymers or vulcanizable rubber.

  Other features and advantages of the present invention will become apparent upon reading the following description with reference to the accompanying drawings.

1 is a perspective view of an applicator device according to a first embodiment of the present invention. FIG. 6 is a side view showing a surface (b) of a spiral curve associated with a pin. It is a front view of a curved surface (b). FIG. 5 is a perspective view showing a row of pins arranged in accordance with the present invention. It is a figure which shows a mode that it developed on the outer side of the spiral curved surface. FIG. 6 is a side view showing several arrangements of pin rows. Fig. 6b is a front view showing the arrangement of several rows of pins according to Fig. 6a. It is a figure which shows the row | line | column of the pin arrange | positioned with respect to a spiral curved surface. FIG. 6 is a view of a pin with a recess according to the present invention. FIG. 8 is a view of the pin of FIG. 7B at a first angle. FIG. 8 is a view of the pin of FIG. 7B at a second angle. 3 is a three-dimensional view of a row of pins. FIG. FIG. 6 is a diagram of a pin according to an alternative embodiment. FIG. 6 is a diagram of a pin according to another alternative embodiment. FIG. 6 is a perspective view of an applicator device according to another embodiment of the present invention. It is a perspective view of other embodiments of the present invention. It is a front view of embodiment of FIG. FIG. 6 is a side view of a particular embodiment of the present invention. FIG. 6 is a side perspective view of an alternative embodiment of the present invention. FIG. 6 is a simplified perspective view of yet another embodiment of the present invention having certain pins. FIG. 3 is an illustration of an embodiment of the present invention having pins on a flexible stem and a core positioned in accordance with the present invention. 1 is a side view of an applicator device having a flexible stem with spikes according to the present invention. FIG. It is the elements on larger scale of FIG. 17A. An embodiment similar to the embodiment of FIGS. 17A and 17B. Figure 2 is a side view of an applicator device of two materials according to the present invention. It is a side view of an applicator device of two kinds of materials. 1 is a side view of a device according to the invention consisting of three different materials. FIG.

  For clarity, identical or similar elements are identified by the same reference numerals throughout the drawings.

  FIG. 1 shows an applicator device, such as a fluid or paste type product on keratin fibers, comprising an elongated shape, particularly a central core 1 of constant cross-section along the axis XX, although this property is essential Absent. It is advantageously possible to provide a conical core 1 having a taper of 0.05 ° to 15 °, as shown in FIG. 2 at an angle α.

  At least one row of elongated pins 2 is provided. The barb 20 has a first embedded end on the core 1 and a free second end 21. As will be appreciated from reading the remainder of this specification, the pins can have various shapes and can vary. The number of pins in a row varies between 1 and 36 in the usual way. The effective length of such an applicator can be between 5 and 35 mm for specific treatment of eyelashes or eyebrows, and between 5 and 120 mm for treatment of other keratin fibers. The stud usually has a length of 0.5 mm to 7 mm.

  Of course, the applicator device is an integral part. It can be obtained in various ways. By molding mono-injection, bi-injection or tri-injection. The one-part applicator according to the invention can also be obtained by adding material by compression, by machining. The material used can be a thermoplastic polymer or a thermoplastic elastomer polymer or a vulcanizable rubber. These materials can include mineral fillers, metals, chemicals or organic substances.

  FIG. 2 schematically shows an applicator device comprising a row of pins 2 constructed on the core 1 and having a surface or face belonging to a helically curved surface b around the longitudinal axis XX. As will be described later, the pins may have different shapes. However, they must always have a surface belonging to the curved surface b.

  FIG. 3 shows another view of the imaginary surface where b somehow lines all or part of the pins 2 in a row. According to FIG. 3, the pin itself is embedded in a flexible rod 3 which is recessed at two points on the central core 1. Of course, the pins are free at their second end 21.

  FIG. 4 shows an array of two frustoconical pins belonging to the spiral surface b, one side better seen in FIGS.

  FIG. 5 is an explanatory diagram of a helix that serves as a direction vector of the helix surface b. The spiral developed here is clearly visible, which serves as a guide for the spiral b of the map b defined between the first horizontal axis Y and the second horizontal axis Y ′. According to this figure, the angular offset between Y and Y ′ is 720 ° or two full rotations. Smaller angles, at least 1 °, can be provided without departing from the scope of the present invention.

  6a and 6b are a side view and a front view, respectively, of one embodiment of the present invention. Here, two spiral surfaces are provided that intersect at approximately the center of the length of the applicator device.

  7A and 7B, 7C and 7D highlight particular forms of pins that are compatible with the practice of the present invention. More specifically, the pin 2 constructed here on the flexible stem 3 which is part of the helical surface b has at least one recess or recess relief, negative relief. The stud 2 has a generally conical shape and its large base is embedded on the flexible rod 3. Two recesses 22 and 23 are provided in the cone. The recesses are arranged at two different elevations of the spike 2. The recesses 22 and 23 are formed by flat cutout portions of the spiral surface b. The recesses 22, 23 make it possible to capture the type of liquid or pasty product for efficient retention.

  FIG. 8 shows only one row of pins 2 arranged in space. Typically, these faces are arranged in the spiral face b, which can be seen in particular in FIG. 7A.

  FIG. 9 shows another form of the pin 2 having a recessed base 20 that is larger in size than the free end 21. Such a pin also has a flat shape and a surface belonging to the helical surface b. These pins are preferably arranged adjacent to form a kind of blade together.

  FIG. 10 shows another form of stud according to the present invention, which includes a positive protrusion or ridge 24. The protrusions 24 are substantially flat here and can be oriented substantially perpendicular to an already defined face or surface.

  FIG. 11 shows an embodiment in which the pin 2 is attached to one end (distal or proximal) of the device and inserted into the rod 3 itself attached approximately midway along the length of the core 1. . A half row is thus formed. The other half row is composed of two pins embedded in the core 1. The mixed solution itself is interesting in that it is stiffer than a solution containing only the arch if all other conditions are the same.

  12 and 12A correspond to an embodiment in which the pin 2 has all the protrusions 24 as defined above in connection with FIG. The pins 2 are directly connected to the cores 1 and their geometry with the properties defined above, in particular with regard to their relationship to the helical surface b.

  FIG. 13 is a view showing an embodiment in which the pins of the row 2 having a surface in the b-plane extend over a part of the length of the core 1. More precisely, the associated length is about half of the total length of the applicator. At both ends of the applicator device, the pins are aligned, for example with a flat surface belonging to the longitudinal surface.

  FIG. 14 is a modification of FIG. It depends on the presence of one end region with a surface with pins in the longitudinal plane.

  FIG. 15 shows an embodiment in which the flattened pins shown in FIG. 9 are provided. Several sets of blades formed by such pins 2 can be seen.

  FIG. 16 corresponds to a mixing solution in which the device includes pins 2 arranged on both the flexible rod 3 and the core 1.

  17A and 17B show a solution in which the pins are implanted in the flexible rod 3. The flexible rod 3 forms two groups. The first group extends over approximately half the length of the device. The other extends to the other half of the length of the device. One group of flexible rods is disposed on an extension of the other group of flexible rods.

  FIG. 18 differs from FIG. 17 in that pins are implanted from the core 1 but not all from the rod.

  19, 20 and 21 relate to so-called multi-material embodiments. These consist of a plurality of materials obtained as described above.

Claims (12)

A device for applying fluid or paste-type products on keratin fibers,
The device is
An elongated central core (1) extending along the longitudinal axis XX and a first elongated end (20) in which said core and / or flexible rod (3) are embedded at two points of the central core. ), At least one row of pins (2), and a second free end (21),
The pin (2) and the one or more rods (3) and the core (1) are formed integrally or formed in one mold,
All or part of said pins forming part of a row have a surface (a) belonging to a spirally bent surface (b) about axis XX.   The apparatus of claim 1, wherein the helical surface is defined between a first (Y) and second (Y ′) transverse axis having an angular offset between 1 ° and 720 °.   Device according to any one of the preceding claims, characterized in that the at least one flexible rod (3) has a helically shaped part of the helical surface (b).   4. All or part of said pins each have at least one recess or negative relief (22, 23) defined by said helical surface. apparatus.   Device according to any one of the preceding claims, characterized in that all or part of the pins each have at least one protrusion or positive relief (24).   6. A device according to any one of the preceding claims, comprising a number of rows substantially arranged according to a number of different face spiral pins.   8. A device according to claim 1, comprising a plurality of longitudinal regions with differently arranged studs, wherein at least one of said regions is provided with pins aligned along axis XX. The apparatus according to one item.   8. The spike according to claim 1, wherein the spikes (2) have different heights depending on their position on the core (1) and / or the flexible rod (3). The device described.   9. The spike according to claim 1, wherein the spikes have recessed bases (20) that are larger in size than their free ends (21), and are preferably adjacent. 9. Equipment.   10. The length of the first part comprises at least one flexible rod (3), the pin being arranged on the core to the second part of its length. The apparatus as described in any one of.   The flexible rod (3) forms a first assembly and a second assembly, and the rod of the first assembly is embedded at the distal end of the core and substantially in the center of the core. 11. A device according to any one of the preceding claims, wherein the rod of the second assembly is embedded substantially in the center of the core and at the proximal end of the core.   12. A device according to any one of the preceding claims, characterized in that it is formed by multi-material injection, preferably by two-material or three-material injection material.

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