Classifications

• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
  • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B1/00—Brush bodies and bristles moulded as a unit
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D1/00—Bristles; Selection of materials for bristles
  • A46D1/02—Bristles details
  • A46D1/0238—Bristles with non-round cross-section
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D1/00—Bristles; Selection of materials for bristles
  • A46D1/02—Bristles details
  • A46D1/0253—Bristles having a shape which is not a straight line, e.g. curved, "S", hook, loop
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B2200/00—Brushes characterized by their functions, uses or applications
  • A46B2200/10—For human or animal care
  • A46B2200/1046—Brush used for applying cosmetics
  • A46B2200/1053—Cosmetics applicator specifically for mascara
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B33—ADDITIVE MANUFACTURING TECHNOLOGY
  • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
  • B33Y10/00—Processes of additive manufacturing

Definitions

• the invention relates to the field of fluid or pasty cosmetic product applicators on keratin fibers or on an epidermis, for example of the mascara type.
• the invention relates more specifically to the device or means for applicating the cosmetic product.
• the application device itself may for example be an elongated brush, provided with a central core from which a set of bristles or spikes stand out.
• the bristles are an old technology: a twisted metal wire retains the bristles which stand up transversely.
• An application example is shown in document US2011/030717.
• the application device is in the form of a brush comprising a series of pins embedded in the longitudinal core of the brush.
• the assembly is molded in plastic.
• An application device thus forms, with an appropriate reservoir into which it can be inserted, a cosmetic product dispenser.
• Documents FR 2 810 860 and WO 2011/045770 show some examples of applicators derived from this concept.
• Brushes of this type do not have maximum efficiency because the flat faces do not participate in optimal separation of the eyelashes and the non-flat faces do not contribute to the load of cosmetic product. With this type of brush, the user is therefore forced to make several passes over his eyelashes while reversing the movement of the brush to ensure that he recovers a sufficient load of cosmetic product.
• document EP 1 611 817 discloses a cosmetic product application device comprising a longitudinal support, first and second rows of spikes made monolithically with the support, embedded on the same side of the support and extending for more than a quarter of the length of the support.
• the teeth extend on either side of a so-called geometric separation surface formed in two non-parallel directions and surfaces.
• the pins are erected from a flat face of the support, and they are staggered on either side of the separation surface.
• document FR 2 930 875 describes a cosmetic product applicator device comprising a longitudinal core supporting several rows of pins having a flat face and projecting radially from the core.
• the pins are distributed in at least one row parallel to the longitudinal axis of the core, so that on the same row the pins are positioned alternately on either side of a central line (or plane) of the row, with their flat side facing the inside of the row.
• the flat faces of the pins of the same row extend perpendicular to the core and are aligned, and they are oriented in both directions of rotation around the core. Even if this solution provides some improvement vis-à-vis the prior art, the modularity of the load is not obtained favorably. In addition, the separation of the eyelashes remains perfectible.
• Each spike must contribute to improving, alone or in combination with other spikes, both the product load and the separation of the eyelashes or keratin fibres.
• the invention aims to remedy the drawbacks of the state of the art, in particular as regards the load of cosmetic product and the separation of the eyelashes.
• an applicator device for a product of the fluid or paste type on keratin fibers or on an epidermis comprising a central core of elongated shape which extends along a longitudinal axis XX, at least one row of elongated spikes comprising a first end embedded in the core and a second free end, the spikes and the core being formed in one piece, at least one of the spikes being delimited by a first flat face coinciding with a longitudinal plane passing through the longitudinal axis XX of the central web, called the joint plane, and through a second flat face forming with said first flat face an angle of between 91° and 179°, delimiting a reservoir volume V of cosmetic product.
• the applicator device according to the invention comprises at least one of the following technical characteristics:
• the applicator device further comprises a third flat face forming with said first flat face an angle of between 1° and a value complementary to 180 of the angle minus 1°, the third flat face delimiting the volume of reservoir V of cosmetic product taking the form of a longitudinal groove;
• a frustoconical face of the pin comprises first and second adjacent frustoconical sections, the second frustoconical section being extra thick with the first frustoconical section, a longitudinal edge separating the two frustoconical sections;
• the free end of the pin has a frustoconical part in "extra thickness" from the rest of a frustoconical face of the pin, an annular rim separating the frustoconical part in extra thickness from the rest of the frustoconical face;
• the barb comprises first and second parts superimposed on a part of each of their height, one to the other along a longitudinal axis of the barb, the first part being delimited by the first and second flat faces, the second part s projecting from the first part;
• the second part is of generally symmetrical mirror shape of the first part
• the second part overlaps entirely over part of the height of the first part, between the ends of the first part;
• the spike has a third part superimposed on the second part over a part of each of their heights, one to the other along a longitudinal axis of the spike, the third part extending projecting from the second part;
• the pin comprises elements extending projecting from an outer surface of the pin
• the pin includes elements extending hollow from an outer surface of the pin
• the distance measured along the axis XX between two successive pins can be negative, zero or even positive, less than about 2 millimeters.
• FIG. 1 is a perspective view of an applicator device according to a first embodiment of the invention
• FIG. 2 is a detail view of an implantation of the pins of the applicator device of Figure 1;
• FIG. 3a is a three-dimensional view of a first embodiment of a spike for the applicator device according to the invention.
• Figure 3b is a top view of the pin of Figure 3a;
• Figure 4a is a set of five pin locations of Figure 1, seen from above;
• Figure 4b is another set of five pin locations of Figure 1, seen from above;
• FIG. 5a is a three-dimensional view of a second embodiment of a spike for the applicator device according to the invention.
• Figure 5b is a top view of the pin of Figure 5a;
• FIGS. 6a and 6b are three-dimensional views of a first series of variant embodiments of the pin of Figure 3a;
• FIGS. 7a to 7c are three-dimensional views of a second series of variant embodiments of the pin of Figure 3a;
• FIGS. 8a to 8d are three-dimensional views of a third series of variant embodiments of the pin of Figure 3a;
• FIGS. 9a to 9d are three-dimensional views of a fourth series of variant embodiments of the pin of Figure 3a;
• FIGS. 10a and 10b are three-dimensional views of a third embodiment of a spike for the applicator device according to the invention.
• FIG. 11a and Figure 11b are three-dimensional views of a fourth embodiment of a spike for the applicator device according to the invention.
• - Figure 11 c is a three-dimensional view of an alternative embodiment of the spike of Figure 10a or 11a;
• - Figures 12a to 12d are three-dimensional, side and top views of a fifth embodiment of a spike for the applicator device according to the invention;
• FIG. 12e is a top view of an alternative embodiment of the pin in Figure 12a;
• FIG. 13 is a side view of a second variant embodiment of the pin of Figure 12a;
• FIG. 14 is a three-dimensional view of an alternative embodiment of the pin of Figure 13;
• FIG. 15a is a second embodiment of the pin of Figure 13;
• Figure 15b is a fourth embodiment of the pin of Figure 12a;
• FIGS. 16a and 16b are three-dimensional and side views of a sixth embodiment of a spike for the applicator device according to the invention.
• FIG. 20a is a top view of an alternative embodiment of the pin in Figure 5a;
• FIG. 20b is a top view of a second variant of the pin in Figure 5a;
• FIG. 25a to 25c are three-dimensional, top and detail views of a second embodiment of an applicator device according to the invention.
• FIG. 1 and FIG. 2 illustrate the principle of the invention which therefore relates to a device 1 for applying a product of the fluid or paste type to keratin fibers such as eyelashes.
• this device comprises a core 2 elongated which extends along a longitudinal axis XX; the cross section of the core 2 may or may not be constant.
• At least one row of pins or protuberances 3, of generally elongated shape, comprises a first end 30 embedded in the core 2 and a second free end 20; the spikes 3 and the core 2 are advantageously formed in a single piece, in particular made from molded plastic.
• the applicator device 1 is of generally elongated shape and its external volume can take different shapes: cylindrical, truncated cone, peanut or other; the person skilled in the art chooses it according to the specific scenario.
• the cosmetic product considered in this description could be liquid or semi-liquid; various applications can be envisaged.
• the cosmetic product is a product as defined in Regulation EC 1223/2009 of the European Parliament and of the council dated 30.11.2009, relating to cosmetic products, as well as the EU directive 94_62_EC, the American standard "California Proposition 65 or even “REACH”.
• the cosmetic product intended to be applied by the cosmetic product applicator device 1 according to the invention can also be in the form of a powder or a solid. It preferably remains in the form of a fluid or paste. It is a product intended to be deposited on the keratin fibers of a user, such as the eyelashes or the eyebrows: for example a mascara.
• the pin 3 is delimited by a first flat face 200 merging or substantially merging with a longitudinal plane called the joint plane which extends radially vis-à-vis the core 2 and passes through the longitudinal axis XX.
• the pin 3 is part of a frustoconical shape of axis Z.
• the pin 3 is further defined and delimited by a second flat face 210 forming with the first flat face 200 an angle 211 of between approximately 91° and 180°.
• the angle 211 is between 120° and 150°.
• Such an arrangement of two faces 200 and 210 makes it possible to create a reservoir volume V in the shape of a "V" in section for the cosmetic product open at an angle complementary to 180° with the angle 211 between the face 210 and the parting plane passing through the longitudinal axis XX.
• the lips of the wiper slide along the edges 212 or 213 of the spike 3 without removing the cosmetic product taken from the reservoir volume V.
• the arrangement of two adjacent pins 3.3′ is such that a gap E of between ⁇ 2 mm and +2 mm can be measured along the longitudinal axis XX of the applicator device 1.
• the orientation of two adjacent pins 3, 3' is not the same since the second flat faces 210 are located alternately on either side of the joint plane passing through the longitudinal axis XX, while the first faces 200 belong to said joint plane.
• the two pins 3 and 3' are here symmetrical according to a central symmetry, that is to say that the pin 3' is positioned at 180° with respect to the pin 3.
• This arrangement makes it possible to form in space two volumes of tank V on either side of the joint plane passing through the longitudinal axis XX, oriented one with respect to the other by 180°, as well as possibly a space connecting these volumes of tank V.
• the arrangement of two adjacent pins 3, 3” is such that a difference E of between -2 mm and +2 mm can be measured along the longitudinal axis XX of the applicator device 1 .
• the orientation of two adjacent pins 3, 3” is not the same since the second flat faces 210 are located alternately on either side of the joint plane passing through the longitudinal axis XX, while the first faces 200 belong to said joint plane.
• the two pins 3 and 3” are mirror symmetrical here with respect to the joint plane passing through the longitudinal axis XX.
• This arrangement makes it possible to form in space two volumes of tank V on either side of the joint plane passing through the longitudinal axis XX, oriented with respect to each other in the same direction while being symmetrical in mirror.
• the two volumes of reservoir V form a single volume as illustrated in the second, third and fourth arrangements of FIG. 4b.
• the value of the deviation E is chosen in the most appropriate manner by the person skilled in the art. It is possible to mix the deviations E for a same row of pins 3, 3', 3”. The same is true for the orientation of the 3.3' and 3” pins.
• the pin 31 further comprises hollows 311 distributed over the length of the edges 213 and 212, and this vis-à-vis.
• the pin 32 has indentations 312 and 313 positioned in staggered rows extending on a frustoconical outer face of the pin 32 over approximately a half-angle 211 from the flat faces 200 and 210 respectively, and this in a plane perpendicular to the Z axis.
• pin 33 comprises a series of beads 331 extending over a frustoconical outer face of pin 33, along a plane perpendicular to axis Z; the beads 331 extend from the flat face 200 over 180° to an end 332 protruding from the flat face 210.
• the beads 331 are substantially elliptical in shape.
• the spike 36 comprises beads 361 similar to the preceding beads 331, except that they do not extend as far as the flat face 200. However, they comprise an end 362 projecting projecting from the flat face 210.
• the pin 35 has beads 351, 352 similar to the previous beads 331.
• the beads 351 extend from the flat faces 200 and 210.
• the beads 352 additionally extend projecting from the flat face 200.
• the beads 351 and 352 are here alternated over a height of the barb 35: a bead 352 is between two beads 351 .
• the spike 34 comprises a series of variants 341 of the previous beads 331.
• the beads 341 are differentiated, on the one hand, by their polygonal section, and, on the other hand, by the fact that they do not extend to the flat face 200.
• the pin 38 comprises beads 385 similar in section to the previous beads 341.
• the beads 385 include a first end 383 projecting from the flat face 200 and an end 384 projecting from the face 210.
• the beads extend over an angle 381, the end 384 which may be in the joint plane passing through the longitudinal axis XX.
• the angle 381 can be between 1 and 290°.
• the pin 37 is a variant of the pin 38. It differs in that the beads 371 do not extend as far as the flat face 200, but are extended by a groove 373 up to to said flat face 200. Their ends 372 extend projecting from face 210 until they are possibly in the plane of flat face 200.
• the pin 39 has on its frustoconical face a continuous helical groove 391.
• pin 301 has portions 392 of a helical groove similar to groove 391 but discontinuous.
• the pin 302 has a continuous helical bead 393 on its frustoconical face.
• the barb 303 comprises portions 394 of a helical bead similar to the bead 393 but discontinuous.
• the pin 4 is inscribed in a frustoconical shape with an axis Z.
• the pin 4 has a first end 40 embedded in the core 2 and a second end 41 free. It is delimited by a first flat face 200 coinciding or substantially coinciding with a longitudinal plane called the joint plane which extends radially with respect to the core 2 and passes through the longitudinal axis XX.
• the pin 4 is further defined and delimited by a second flat face 410 forming with the first flat face 200 an angle 211 of between approximately 91° and 180°. As a variant, the angle 211 is between 120° and 150°.
• the spike 4 has a third flat face 412 forming with the first flat face 200 an angle 411 of between approximately 1° and a value complementary to 180° of the angle 211 minus 1°.
• Such an arrangement of the two flat faces 410 and 412 makes it possible to create a reservoir volume V in the shape of a "V" in section for the cosmetic product open at an angle complementary to 180° with the angles 211 and 411 added between the flat face 410 and the flat face 412.
• the lips of the wiper slide along the edges 212 or 413 of the spike 4 without removing the cosmetic product taken from the volume of the reservoir v.
• the pin 400 shown in top view is a first embodiment of the previous pin 4.
• the pin 400 has a second longitudinal groove delimiting an additional reservoir volume V3 mirror-symmetrical to the reservoir volume V with respect to a plane passing through the Y and Z axes. type distributed over a periphery of the frustoconical face of the spike 400: for example the spike 401 of FIG. 20b comprises three of them delimiting reservoir volumes V, V3 and V4. Other quantities can be provided, up to 20 for example.
• FIG 21 is shown an alternative embodiment of the pin 400.
• the pin 403 has longitudinal grooves 453 arranged in the upper part of the pin 403, the bottom of the grooves 453 being at a height h5 of the recessed end of the pin 403.
• the pin 402 has longitudinal grooves 452 arranged in the lower part and extending over a height h5 from the recessed end of the pin 402.
• the pin 404 shown is a variant embodiment mixing the variant embodiments of the pins 402 and 403: it successively comprises elongated grooves 453 in the upper part of the pin 404 and elongated grooves 454 in the lower part of the pin 404.
• the elongated grooves 453.454 are staggered.
• FIGs 24a and 24b are shown two additional embodiments of the pin 400.
• the pin 405 has an annular groove 455 formed in a plane perpendicular to the Z axis of the pin 405.
• the pin 406 has two annular grooves 456, 457 similar to the previous groove 455 and distributed over the height of the pin 406.
• Pin 5 is based on pin 2 previously described. It has a first end 50 embedded on the core 2 and a second end 51 free. However, it has at least two adjacent frustoconical sections 512 and 513 on its frustoconical face, the frustoconical face of the section 513 is in "additional thickness" to the frustoconical face of the section 512.
• the pin 5 thus has a longitudinal edge 514 between the two sections 512 and 513 and extending between the two ends 50 and 51. Section 513 extends from flat face 210 over an angle 511 between 1° and 177° without exceeding angle 211 .
• Pin 6 is again based on pin 2 previously described. It comprises a first end 60 embedded on the core 2 and a second end
• the free end 61 is a frustoconical part in "additional thickness" of the rest of the frustoconical face of the pin 6.
• the pin 6 has an annular rim
• the flange 62 extending in a plane perpendicular to the Z axis from the flat face 210 to the flat face 200.
• the flange 62 extends from the free end 61 over a height of the order of 0.05 to 0.95 times the height of the spike 6.
• the pin 65 takes up the two tapered sections 512 and 513 of the pin 5, as well as the longitudinal edge 514. It also takes up the part tapered "extra thickness" at the end 61 which is then in the continuity of the tapered section 513 and the annular flange 62.
• the longitudinal flange 514 extends from then the end 60 to the annular rim.
• the annular flange 62 extends from the flat face 200 to the longitudinal flange 514.
• the pin 65 comprises a series of annular grooves 651 made in a plane perpendicular to the axis Z on the external surface of the tapered section 513.
• Pin 7 with a height h1, is again based on pin 2 previously described. It has a first end 70 embedded on the core 2 and a second end 72 free.
• the pin 7 is in two superimposed parts: the first part extends from the end 70 embedded in the core 2 to a first intermediate end 71, over a height h2. This first part is here at the pin 3 previously described.
• the second part extends from the free end 72 to a base end 73 over a height h3 from the free end 72.
• the second part is similar to the pin 3 previously described in that it comprises a first flat face 220 in the joint plane passing through the longitudinal axis XX and a second flat face 230 forming with the first flat face 220 an angle 212 comprised between approximately 91° and 180°. As a variant, the angle 212 is between 120° and 150°.
• the second part is mirror symmetrical to the first part.
• the flat faces 200 and 220 being in the same joint plane passing through the longitudinal axis XX and facing each other.
• the second part is "superposed" on the first part between the base end 73 and the intermediate end 71 where the flat faces 210 and 220 coincide.
• the first part comprises a first prismatic flat 215 adjacent to the first flat face 200 and the second part comprises a second prismatic flat 225 adjacent to the flat face 220.
• the second part is completely superimposed on the first part, the base end being at a height h4 of the recessed end 70.
• This variant embodiment may include the prismatic flats 215 and 225.
• the pin 7' in FIG. 14 also comprises a ring portion 74 extending from the flat face 210 of the first part to the flat face 230 of the second part. This makes it possible to split the original tank volume V into two tank sub-volumes V1 and V2 superimposed on the height of the pin 7'.
• the pin 710 differs from the pin of Figure 13 in that it comprises a disc portion 711 projecting and in a plane perpendicular to the Z axis at the end of base 73 as well as an annular groove extending over the outer face of the first and second parts of the pin 710.
• the pin 720 is a pin 7 to which has been added a disc 721 positioned, projecting and in a plane perpendicular to the Z axis, on the second part of the pin 720 under the free end .
• the 722 comprises a ring 724 resting on the flat face 220 above the intermediate end 72 and anchored in the first part under the base end 73.
• the ring 724 is in a plane parallel to the joint plane comprising the flat face 220.
• the pin 723 comprises instead of the ring 724 a half-ring 725 behind the flat faces 210 and 230, anchored at the bottom in the first part and resting at the top on the flat face 220.
• the pin 724 also includes a half-ring 726 instead of ring 724, identical to half-ring 725 but turned by 90° to be suspended bearing against flat face 220, the two ends of half-ring 726 being free.
• the pin 730 is similar to the pin 7. It differs from the latter by the presence of two extensions 731 and 732 on either side of the second part of the pin 730.
• the two extensions 731 and 732 are anchored in the first part at the level of the base end 73 and extend parallel to the Z axis of the pin 730.
• the two extensions are opposite the flat face 220 and behind the flat face 200.
• the pin 740 is based on the pin 7 to which a branch 741 has been added, curved here, and extending globally along the Z axis of the pin 740 and opposite and at a distance of the flat face 230 of the second part of the pin 740.
• the branch 741 comprises a flat face 742 which is in the plane of the flat face 200 and in the plane containing the flat faces 200 and 220.
• pin 745 is an alternative embodiment of pin 740 and differs from the latter by the presence of a second branch 746 resting on face 742 of branch 741.
• Second branch 746 extends globally along the Z axis of the spike 745 and opposite, at a distance from the flat face 230 of the second part of the spike 745 and between the second part of the spike 745 and the branch 741 .
• a sixth embodiment of a spike 8 for the applicator device 1 is based on the barb 7 previously described in the sense that it repeats the first part between an inking end 80 in the core 2 and an intermediate end 82, a second part "superimposed” on this first part between a base end 83 and an upper end 84.
• the barb 8 comprises a third part "superimposed” on the second part and extending between a lower end 85 and a free end 81 of the barb 8. The third part is superimposed” on the second part in the same way as “superimposing” the second part on the first part.
• the number of rows of pins preferably varies from one to twenty-four, with identical or different pins and arrangements of pins.
• the spikes can all be oriented in the same way on the same row or on all of the spikes constituting the application device; the pins can also have different orientations, for example alternate on either side of the longitudinal plane P.
• the applicator device 101 according to the invention is here a comb comprising a core 102 of longitudinal axis XX comprising over a large part of a length a substantially planar face 103 parallel to the longitudinal axis XX and extending from a free end of the core 102.
• the applicator device 101 according to the invention comprises at least one row of spikes or protuberances 3 (here there are three rows). The rows can be parallel to each other or have an angle to each other as shown here.
• At least one row is installed along an installation axis which is parallel to the longitudinal axis XX, and one of the adjacent rows along an installation axis X'X' forming an angle with the longitudinal axis XX, the other of the adjacent rows being implanted mirror symmetrical to one of the adjacent rows with respect to the row parallel to the longitudinal axis XX.
• the pins 3, 3' are installed in a row like one of the arrangements of the previous figure 4a. Any other layout is possible, including those described above. The same goes for the pins of the rows which can be according to the other embodiments previously described.
• the longitudinal planes called joint planes of each of the pins 3, 3' are perpendicular to the substantially planar face 103 of the core 102 and pass through the implantation axis X'X' of the row of pins considered.

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• 2021
  • 2021-06-29 EP EP21746077.3A patent/EP4362745A1/de active Pending
  • 2021-06-29 JP JP2023579489A patent/JP2024524293A/ja active Pending
  • 2021-06-29 US US18/574,395 patent/US20240292942A1/en active Pending
  • 2021-06-29 WO PCT/FR2021/051199 patent/WO2023275445A1/fr active Application Filing
  • 2021-06-29 CN CN202180100128.3A patent/CN117580488A/zh active Pending

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