FR2850545A1 - Coloring composition applying device for hair, has composition application grid with needles projecting towards outside and distributed between openings for sinusoidally passing hair above openings - Google Patents

Abstract

The device has a piston (6) moving translationally in a principle axis (1a) of a container (1) by a control screw (5). A composition application grid (3) is placed at an open end of the container, opposite to a toothed wheel, and intended to be in contact with hair during coloration. The grid has needles (4) projecting towards outside and distributed between openings (7) for sinusoidally passing the hair above the openings. The screw has an integral toothed wheel (2) for turning the screw from outside of the container.

Description

The invention relates to a device for applying a composition

  by oxidation coloring for hair.

  Oxidation coloring of hair is generally done in two ways.

  The simplest is air coloring. The oxygen in the air acts as an oxidizing agent. This air staining only gives satisfactory results in the short term, generally a few days.

  The second method involves a specific oxidizing agent, generally hydrogen peroxide which, combined with the so-called oxidation dye 10, leads to a colored compound. It leads to permanent coloring.

  Hair coloring is a delicate operation to carry out. It often requires the intervention of an operator external to the person wishing to color the hair, for example a hairdresser.

  Beforehand, in the case of the use of a specific oxidizing agent, the oxidation dye and the oxidizing agent must be combined and mixed, for example in a separate container, to obtain a homogeneous coloring composition.

  The composition is then applied using a brush, wick by 20 wick.

  It is a long and meticulous work, which requires a certain dexterity, in particular because of the large number of gestures to be accomplished: immerse the brush in the coloring composition, bring it to the level of the hair, select a wick, apply the composition, by long strokes of the brush but also by small strokes to obtain a complete and uniform application, then return to the container containing the coloring composition and start again.

  In addition, the coloring composition must be used quickly, since the presence of the oxidizing agent in the composition changes the color.

  Finally, the brush must be carefully maintained, or changed for each color.

  The present invention aims to simplify the process of coloring hair while allowing obtaining a uniform and complete coloring.

  In particular, the present invention relates to a device for applying an oxidation dyeing composition for hair, which allows, if necessary, the conservation of the dye and the oxidizing agent and their mixing at the time of application to hair, as well as the application and distribution of the composition on the hair, and thus avoids the operator the use of separate instruments.

  Thus, the invention relates to a device for applying an oxidation dyeing composition for hair comprising: - a container, having a main axis, and intended to contain said composition, - a piston movable in translation along the axis main of said container, - a piston control screw which, when it is rotated, causes the piston to move in translation along the axis of the container, - a knob secured to the control screw allowing a user to make turn said control screw from outside the container, a grid for applying the composition placed at an open end of the container opposite the dial and intended to be in contact with the hair during coloring, said grid application comprising a plurality of orifices allowing the composition contained in the container to pass under the effect of the pressure exerted by the piston, and a plurality of protruding pins ts outwards and distributed between the orifices so that, when the application grid moves over the hair, the hair passes over the orifices along a sinuous path.

  All the relative provisions of the orifices and spikes allowing such a winding path of the hair above the orifices are conceivable.

  Thus, the arrangement of the orifices and the pins can be random. But it is preferably ordered.

  According to a first embodiment, at least one pin forms with at least one orifice a pattern reproduced periodically over the entire application grid. The pattern is preferably a square, a rectangle or a rhombus whose vertices are occupied by an orifice, and whose center is occupied by a spike.

  According to a second embodiment, the orifices are placed on a first set of closed curves, the pins are placed on a second set of closed curves, the closed curves of the first and of the second set being interposed with one another. Generally, the shape 5 of these curves corresponds to the shape of the outer contour of the application grid. For example, said curves can be polygonal, circular or elliptical. They are preferably concentric.

  The cross section of the orifices can be of any suitable shape, in particular circular, oval, triangular, square or rectangular. The diameter or the largest dimension of the orifices, as the case may be, is chosen according to the coloring composition, in particular its viscosity.

  Generally, the orifices have a diameter or a larger dimension of between 0.7 and 2.3 mm, preferably between 1 and 2 mm.

  Similarly, the pins can be of any suitable shape. The cross section of each spike can be, for example circular, oval, triangular, square or rectangular, constant or decreasing from the base of the spike towards its top. The diameter or the largest dimension, as the case may be, at the base of the spike is between 0.8 and 1.2 mm, preferably equal to 1 mm.

  The pins generally have a height of between 3 and 12 mm, preferably between 3 and 10 mm, better equal to 5 mm.

  According to a particular embodiment, the device comprises at least one separation element fixed on the piston on the one hand and on the application grid on the other hand, and capable of collapsing on itself during movement. from the piston to the application grid, the separating element or elements dividing the container into at least two separate and sealed compartments.

  This embodiment is particularly advantageous when the coloring by oxidation is carried out using a specific oxidizing agent, such as hydrogen peroxide for example. In this case, the dye and the oxidizing agent are placed in separate compartments. They are only found together with each use of the device: under the effect of the pressure exerted by the rise of the piston, the dye and the oxidizing agent pass through the orifices corresponding to their respective compartments, and are in contact at the outside surface of the application grid.

  Thus, the device according to the invention allows the coloring composition to be preserved without altering the color since, in the container, the oxidizing agent remains separated from the dye.

  The separation element (s) can be arranged in different ways.

  According to a first embodiment, the device according to the invention comprises a single separation element of generally tubular shape, the axis of which coincides with the main axis of the container.

  According to a second embodiment, the device according to the invention comprises at least two separation elements of generally tubular shape arranged on either side of the main axis of the container.

  According to a third embodiment, the device according to the invention comprises at least two concentric tubular separation elements.

  As described above, the separation element or elements used in the device according to the invention are capable of crushing on themselves when the piston moves towards the application grid. Preferably, the separation element or elements are bellows.

  The separation element (s) can be made of any material which is flexible enough to allow them to collapse on themselves and ensuring good sealing with respect to the compounds introduced into the compartments. A particularly preferred material is polyethylene.

  Since the dye and the oxidizing agent pass through the orifices in communication with their respective compartments when the piston is rising, it may be advantageous to improve their distribution at the level of the external surface of the application grid.

  To this end, the application grid of the device according to the invention advantageously comprises an application element proper, comprising said pins projecting outwards and said orifices, as described above, and a distribution element interposed between the container and said application element, said distribution element comprising: - first channels making it possible to communicate each compartment with orifices of the application element situated above another compartment, and - second channels allowing communicating each compartment 5 with orifices of the application element located directly above said compartment.

  The container of the device according to the invention has a capacity comparable to that of the devices usually used to contain care compositions, generally of the order of 30 to 100 ml.

  Generally, the device according to the invention also comprises a removable cap which fits onto the end of the container on which the application grid is placed.

  The device according to the invention can be used with any type of coloring composition generally used for coloring by oxidation of the hair. In particular, the dyes used for oxidation dyeing can be chosen from the usual oxidation bases and couplers. Furthermore, the coloring compositions may contain conventional cosmetic adjuvants, which do not harm the desired coloration.

  The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the description which follows, given with reference to the appended drawings.

  FIG. 1 represents a general view of a device according to the invention.

  FIG. 2 represents a view partly in section of a first embodiment of a device according to the invention.

  FIG. 3 represents a top view of a first embodiment of the application grid of a device according to the invention.

  FIG. 4 represents a view in part in section of a second embodiment of a device according to the invention, in the case where the device has a separating element between the piston and the application grid.

  FIG. 5 is a top view of the application grid of the device in FIG. 4.

  Figure 6 is a partial view, partly in section, of a device according to the invention, in the case where the application grid comprises an application element proper and a distribution element.

  The device according to the invention, seen from the outside, as shown in FIG. 1, comprises a container 1 having a main axis la, comprising a bottom 12, a side wall 13 and an open end 14 opposite the bottom 12. The container 1 constitutes a container intended to receive the coloring composition. A thumb wheel 2, the function of which will be described more precisely below, is arranged on the bottom 12 of the container 1 so as to be accessible to a user. An application grid 3 of the coloring composition fixed to the container 1 covers the open end 14 of the container. The application grid 3 is provided on its surface with a plurality of pins 4 projecting outwards.

  As shown in the partly sectional view of FIG. 2, the thumb wheel 2 is integral with a control screw 5 placed inside the container 1 and makes it possible to rotate it from the outside. A piston 6 is mounted on the screw 5 so that the rotation of the screw 5 causes the piston 6 to move in translation along the main axis 1 a of the container 1.

  As shown in FIG. 2, the piston is dimensioned and its side wall 6a is shaped so that this wall 6a slides during translation along the internal surface of the side wall 13 of the container 1, ensuring the seal between the volumes on either side of the piston 6.

  The application grid 3 is provided with orifices 7 which allow the interior of the container 1 to communicate with the exterior. Under the effect of the pressure exerted by the piston 6, the coloring composition contained in the container 1 passes through the orifices 7 of the application grid to come to spread over the upper surface of the application grid 3 , between the pins 4. In Figure 2, only the holes 7 located in the cutting plane have been shown.

  Thus, when it is desired to color the hair, the wheel 2 is turned so as to raise the piston 6 until the coloring composition, passing through the orifices 7, appears on the surface of the application grid. 3. The device is then brought to the level of the head so that the application grid 3 is in contact with the hair, then the device is moved along the hair so as to spread the coloring composition uniformly over the hair.

  The particular relative arrangement of the orifices 7 and the pins 4 requires the hair, during the displacement of the application grid 3 on the hair, 5 to pass above the orifices and between the pins following a winding path.

  Thus, the application of the coloring composition is done on all of the hair, from the hairline to its end.

  During the application of the composition, the device is in the inverted position: the application grid 3 is continuously supplied with a coloring composition by gravitation of the composition from the container 1 to the orifices 7. However, if this supply is not fairly fast, for example because of a high viscosity of the coloring composition, or if, between two applications, the device is returned to its position in place, feeding of the application grid 3 can be caused by turning the knob 2 which allows the piston 6 to be moved a little more towards the application grid 3.

  A large number of relative arrangements of the pins 4 and the orifices 7 can be envisaged. In particular, as shown in FIG. 3, the pins 4 can be placed on the vertices of squares whose centers are occupied by the orifices 7.

  In the case where the coloring by oxidation is carried out using a specific oxidizing agent, such as hydrogen peroxide, the device according to the invention advantageously comprises at least one separation element 8, placed between the piston 6 and the application grid 3, as shown in FIG. 25 4. This separation element 8 is capable of crushing on itself when the piston 6 moves towards the application grid 3.

  The separating element 8 can be fixed to the application grid 3 by any suitable means, for example using a tubular element 15 of the application grid 3.

  In Figure 4, the separating element 8 is a bellows of generally tubular shape which divides the container 1 into two separate and sealed compartments. Thus, for example, the oxidizing agent is placed in the central compartment, the dye and any adjuvants then being placed in the peripheral compartment. The composition can thus be preserved without the dye and the oxidizing agent being in contact before application to the hair. During application to the hair, the composition, under the effect of the pressure exerted by the piston 6, passes over the upper surface of the application grid 3: the oxidizing agent, in the case envisaged, is found then on the central part of the application grid 3, and the dye on the peripheral part 5, as shown in FIG. 5, on which the separating element 8 shown shows the distinction between the central part and the peripheral part of the application grid.

  In FIG. 5, the arrangement of the pins 4 and the orifices 7 is random, but however distributed so that the hair passes over the orifices 7 along a sinuous path.

  The distribution of the dye and the oxidizing agent at the level of the application grid 3 can be improved by the use of several separation elements 8 (case not shown): for example two tubular and concentric separation elements 8, placed around the main axis 1a of the container 1. The container 1 is then divided into three concentric compartments. By alternating the oxidizing agent and the dye in these compartments, an alternating oxidizing agent and dye are also obtained on the application grid 3 when the device according to the invention is used.

  Several tubular separation elements, for example analogous to the bellows described above, can also be arranged between the piston 6 and the application grid 3 around the control screw 5. For example, two separation elements can be provided. on either side of the screw 5, or else 3 or 4 separation elements distributed regularly around the screw 25 5.

  The distribution of the dye and the oxidizing agent at the level of the application grid 3 can also be improved when the application grid comprises, in addition to an application element 3a proper comprising the pins 4 and the orifices 7, a distribution element 3b interposed between the open end 14 of the container 1 and the application element 3a, as shown in FIG. 6.

  The distribution element 3b comprises first channels 10 making it possible to communicate each compartment with orifices 7 of the application element 3a situated directly above another compartment. The distribution element 3b also comprises second channels 11 communicating each compartment with orifices 7 located directly above said compartment. Thus, part of the content of a given compartment, for example the oxidizing agent, will pass, via the channels 11, the orifices 7 located directly above the compartment, and another part of the content is brought through the channels 10 from the distribution element 9 to orifices 7 located directly above another compartment, containing for example the dye.

  Thus, the contents of the various compartments are distributed over a larger portion of the upper surface of the application grid 3 and a mixture of these contents, for example an oxidation dye and an oxidizing agent. .

  The device shown in Figure 6 comprises a single separating element 8 dividing the container 1 into a central compartment and a peripheral compartment. Two channels 10 allow part 15 of the contents of the central compartment to be brought to peripheral orifices 7. Two other channels 10 allow part of the contents of the peripheral compartment to be brought to central orifices 7. Two channels 11 allow the central compartment to communicate with orifices 7 located directly above said compartment. Two other channels 11 allow the peripheral compartment to communicate with orifices 7 located directly above said compartment. Only the orifices 7 and the channels 10 and 11 located in the cutting plane have been shown.

  Obviously, it is possible to provide several stacked separation elements and a greater number of channels such as channels 10 and 11.

Claims (18)

  1. Device for applying an oxidation dyeing composition for hair comprising: - a container (1), having a main axis (la), and intended to contain said composition, - a piston (6) movable in following translation the main axis (la) of said container (1), - a control screw (5) of the piston (6) which, when rotated, causes the piston (6) to move in translation along the axis main (la) of the container, - a knob (2) integral with the control screw (5) allowing a user to rotate said control screw (5) from outside the container (1), - a grid d application (3) of the composition placed at an open end of the container (1) opposite the wheel (2) and intended to be in contact with the hair during coloring, characterized in that the grid application (3) comprises a plurality of orifices (7) allowing the composition contained in the container (1) to pass under the effect of the pressure exerted by the piston (6), and a plurality of pins (4) projecting outwards and distributed between the orifices (7) in such a way that, during the displacement of the application grid (3 ) over the hair, the hair passes over the orifices (7) along a sinuous path.   2. Device according to claim 1 characterized in that at least one pin (4) forms with at least one orifice (7) a pattern reproduced periodically over the entire application grid (3).   3. Device according to claim 2 characterized in that the pattern is a square, a rectangle or a rhombus whose vertices are occupied by an orifice (7), and whose center is occupied by a spike (4).   4. Device according to claim 1 characterized in that the orifices (7) are placed on a first set of closed curves, the pins (4) are placed on a second set of closed curves, the closed curves of the first and second set being interposed with each other.   5. Device according to claim 4 characterized in that said closed curves are polygonal, circular or elliptical, and preferably concentric.   6. Device according to any one of the preceding claims 5 characterized in that the orifices (7) have a circular, oval, triangular, square or rectangular cross section.   7. Device according to any one of the preceding claims, characterized in that the orifices (7) have a diameter or a larger dimension of between 0.7 and 2.3 mm, preferably between 1 and 2 mm.   8. Device according to any one of the preceding claims, characterized in that the pins (4) have a height of between 3 and 12 mm, preferably between 3 and 10 mm, better equal to 5 mm.   9. Device according to any one of the preceding claims, characterized in that the pins (4) have a circular, oval, triangular, square or rectangular cross section, said section being constant or decreasing from the base of the pin (4) towards its summit.   10. Device according to any one of the preceding claims, characterized in that the pins (4) have at their base a diameter or a larger dimension of between 0.8 and 1.2 mm, preferably equal to 1 mm. 20 11. Device according to any one of the preceding claims, characterized in that it comprises at least one separation element (8) fixed on the piston (6) on the one hand and on the application grid (3) of on the other hand, and able to collapse on itself during the displacement of the piston (6) towards the application grid (3), the separation element or elements (8) dividing the container (1) 25 into at least two separate and waterproof compartments.   12. Device according to claim 11 characterized in that it comprises a single separation element (8) of generally tubular shape whose axis concides with the main axis (1a) of the container (1).   13. Device according to claim 11 characterized in that it comprises at least two separation elements (8) of generally tubular shape arranged on either side of the main axis (la) of the container (1).   14. Device according to claim 11 characterized in that it comprises at least two separating elements (8) concentric tubular.   15. Device according to any one of claims 11 to 14 characterized in that the separation element or elements (8) are bellows.   16. Device according to any one of claims 11 to 15 characterized in that the separation element or elements (8) are made of polyethylene.   17. Device according to any one of claims 11 to 16 characterized in that the application grid (3) comprises an application element (3a), comprising said pins (4) projecting outwards and said orifices ( 7), and a distribution element (3b) interposed between the container (1) and said application element (3a), said distribution element (3b) comprising: - first channels (10) making it possible to communicate each compartment with orifices (7) of the application element (3a) located above another compartment, and - second channels (11) making it possible to communicate each compartment with orifices (7) of the element application (3a) located directly above said compartment.   18. Device according to any one of the preceding claims, characterized in that the container (1) has a capacity of 30 to 100 ml. 20