EP0251968A2 - Hair dye impregnation method device for this method - Google Patents

Abstract

The device consists in a substantially quadrangular small plate (10) with a central hinge which defines two half-small plates which can be folded against each other with their inner faces in a contiguous position, the inner face of each half-small plate displaying a textured, squared profile formed by a plurality of grooves (18) placed close to one another at right angles, a ridge (20) being defined between each pair of adjacent grooves (18); and removable barring means, for holding the small plate in a closed position, the two half-small plates then being stressed against each other; one of the half-small plates intended to receive dyeing gels at spot locations on its inner face and the other of the said half-small plates intended to receive a lock of hair of specific thickness in its grooves (18). The present invention relates to hairdressing techniques.

Description

The present invention relates to hairdressing techniques, and more particularly to coloring by dyeing, whether by striping or other desired pattern on the hair.

In the art of hairdressing, there is a clientele that wants hair coloring. To satisfy this desire, hairdressers have developed a wide variety of hairdressing accessories and techniques for applying coloring substances to the hair. One thinks, for example, of the protective cap of Canadian patent 766,548; with a holey rubber cap or one with disposable foam; to the method described in American patent 3,349,781 and using an aluminum protective sheet, or to the product of the company L'OREAL bearing the trade name "EASY MECHE".

All of these products and techniques basically use the same principle to make the well-known locks: the locks are colored over the entire length, without it being possible to obtain punctual transverse coloring of a given region of the hair strand. It is a market niche not yet exploited. For the moment, the role of the hairdresser in such circumstances is limited to a mechanical application of the dye, without the inherent artistic talent of the hairdresser being able to intervene.

This clientele, which is usually favorable to new products, may well be seduced by a new hair coloring technique which produces different, subtle, attractive results, and creating a striking effect on the eye.

An object of the invention is to introduce a new method of coloring for the hair which makes it possible to color by "touch" various portions of a lock of hair with different colors (one or more).

Another object of the invention is to promote the artistic expression of the hairdresser so that the application of colors to the hair can be carried out according to a particular pattern or according to a very specific application, depending on a fashion. , trendy, or a pure personal need.

A corollary goal to the goals set out above is the production of a device for the punctual application of colors to the hair which is simple to manufacture and to handle.

The invention comprises a device which allows a different coloring to be impregnated on hair, by patterns of all shapes and consisting of a substantially quadrangular plate with central hinge which forms on each side two half-plates of similar sizes which must be folded down. 'one against the other with their textured inner face in contact with each other. The inner face of each half-plate forms a grid profile consisting of a plurality of grooves brought together at right angles to each other, a crest defined between each pair of adjacent grooves. Locking means keep the wafer in a closed position where the ridges overlap one another, allowing the lock of hair which receives the chosen coloring pattern to remain immobile between the two pads so that said pattern keeps the chosen shape, therefore not to spread if the plate slipped.

One of the half wafers is intended to receive on selected point regions on its free face of the indelible coloring substances, and in the other half wafer to receive in its furrows locks of hair brought into contact with these coloring substances in said position closed of the wafer.

• a) étendre des substances colorantes en gel pour cheveux sur l'une desdites demi-plaquettes de la plaquette en position ouverte, selon des dessins préétablis à résolution ponctuelle ;
• b) placer une mèche de cheveux sur l'autre desdites demi-plaquettes ;
• c) fermer ladite plaquette pour mettre en contact gels et cheveux afin d'imprimer les substances colorantes sur la mèche ;
• d) barrer ladite plaquette dans sa position fermée par des moyens de barrure ; et
• e) laisser pendre librement ladite plaquette pour un temps d'imprégnation pré-établi desdites substances colorantes en gel, ledit temps d'imprégnation variant selon le type de substance colorante utilisé.

The method of selective and punctual application of coloring substances in gel to hair, according to the invention, uses a compression plate comprising two rigid half-plates with squared profile connected by a hinge, and which can be folded down 180 degrees from an open position to a closed position where the squared free faces of the two half-plates are constrained one against the other; said method comprising the following steps:

• a) spreading coloring substances in hair gel on one of said half-wafers of the wafer in the open position, according to pre-established drawings with point resolution;
• b) placing a lock of hair on the other of said half-wafers;
• c) closing said wafer to bring gels and hair into contact in order to print the coloring substances on the wick;
• d) locking said plate in its closed position by locking means; and
• e) allowing said wafer to hang freely for a pre-established impregnation time of said gel coloring substances, said impregnation time varying according to the type of coloring substance used.

• Figure 1 is a perspective of the rear portion of the head. of a person, as well as of the plate according to the invention, half open and supporting on one face a few strands of hair and on its other side of the point quantities of gel coloring substances;
• Figure 2 is a plan view of the interior faces of the wafer according to the invention, which is completely open; and
• FIG. 3 represents a cross section of FIG. 2 along line 3-3, and shows how the plate according to the invention can be closed and crossed, and also has a 3x magnification on one side of the plate in a circle numbered 3A.

The device according to the invention consists of a plate 10 of substantially rectangular shape, the intermediate section 12 of which is flexible enough to form a hinge to allow the plate to be folded in half. More particularly, the wafer 10 is constructed in a single molded piece, comprising a main sheet 14, the latter comprising two half-portions 16A, 16B, thicker and integral with the main sheet (forming part of the same piece). The half-portions or half-sheets 16A, 16B, determine on their free internal faces a grid formed by a plurality of grooves 18 arranged in rows and columns brought together at right angles to each other, but diagonally from each of the four sides of the wafer 10. Crests 20 are formed between each pair of grooves 18.

The plate 10 is made of a semi-flexible polypropylene or polyvinyl chloride material. The material at the hinge 12 should however be rigid enough to hold the plate 10 in any intermediate folding position, such as that shown in FIG. 1, while making it possible to open or close this plate with the hand of the hairdresser. or even of the user himself along the hinge formed by the free intermediate section 12 of the main sheet 14. Advantageously, the wafer 10 is translucent for reasons which will become apparent shortly. The whole can obviously be opaque, it would therefore be impossible at this time to see the bonus motif chosen through said plate when it is closed.

It is desirable that the half-sheets 16A-16B be of substantially the same thickness and are arranged in such a way that the grooves 18 of the first half-sheet 16A become opposite the ridges 20 of the second half-sheet 16B when the wafer is closed, in order to allow male-female coupling of the half-sheets, and therefore to favor the most complete possible closure of the wafer 10.

The sheet 14 comprises over the entire length of a side edge parallel to the intermediate section 12, a bulge 22 forming an internal orthogonal shoulder 24 on which abuts the external edge of the half-sheet 16A. The height of the shoulder 24 makes about twice the thickness of the half sheet 16A.

A tongue 26, with a rounded end in cross section, and integral with the bulge 22, projects downwards from the bulge 22, i.e. on the side of the face opposite the texture. The thickness of this tongue 26 is approximately twice that of the bulge 22 as such. The portion of the bulge 22 external to the tongue 26 defines a free edge 28 rounded on the top and forming a horizontal shoulder 30 on the bottom which will be inserted under the shoulder 40 which will act as a clasp, in order to retain the wafer in a closed position, brought back on itself.

The tongue 26 is not essential and can always be sectioned, especially if it is difficult to clear the bulge 38 when the plate is in the closed position.

The edge 32 on the side of the sheet 14 which is opposite the bulge 22 is slightly thickened and forms another internal vertical shoulder 34 against which the second half sheet 16B abuts. Here, the height of the shoulder 34 and the width of the selvedge 32 is equal to that of the bulge 22, which allows the hinge to be effective.

Another tongue 36, two thirds of the width of the selvedge 32 and integral with the outer edge of the intermediate portion of this selvedge 32, projects upwards. The tongue 36 is substantially thicker than the selvedge 32 and its height minus the thickness of the selvedge 32 is approximately equal to the thickness of the tongue 26 including that of the bulge 22. The free upper end of the tongue 36 has a bulge 38 facing inward, and forming a horizontal shoulder 40 on the top. The width of the shoulder 40 is approximately equal to the width of the shoulder 30.

It is advantageous for the edges of the plate at right angles to the bulges 22 and 32 to be double concavity on one side (an arc of a circle opposite each half sheet) and double convex on the other side in 41A, 41B, respectively.

With such an arrangement, the plate can be pressed directly against the scalp, by pressing the concave edge 41A of the half-sheet 16A against the scalp. The concavity of the edge 41A follows an arc corresponding to the shape of the head. The plane of the half-sheet 16A is then approximately at right angles to the contact surface of the head with the edge 41A. The concavity of the edge 41A of the second half-sheet 16B makes it possible to close the wafer. Furthermore, in the case of very long hair, it is advantageous to put end to end two or more platelets 10 in "strings", these platelets biting into the same strands of hair, in closed position, they stand by themselves: but to promote their alignment, the aforementioned convex edges 41B have been provided, which engage the free concave edges 41A of the adjacent plate.

It will now be understood that the elements 22 to 30 are intended to cooperate with the elements 32 to 40, when the plate 10 is folded in half around the hinged section 12, to detachably lock the plate in the closed position. Indeed, the bulge 22 comes to bear on the selvedge 32, in the inverted position, and since the elements 22 to 40 have a certain elasticity, the shoulders 30 and 40 are forced against one another as is the bulge 38 against the tongue 26, and the shoulder 24 against the free portion of the outer edge of the half-sheet 16B. In this closed and crossed position of the wafer 10, the half-sheets 16A-16B are forced against each other.

One or more gels are applied (because a liquid would spread and the whole thing would be out of control) of coloring substances well known in the art, and possibly of different colors, on more or less extensive portions of one of the half-leaves. , like half sheet 16B. The viscosity of these gels is such that it prevents pouring when the half-sheet 16B is in the vertical position, as illustrated in FIG. 1. The distribution of the gels is done according to a defined pattern of figures, drawings, or the like. , see numbers 42a to 42d, as desired.

Then we extend a section or a complete lock of hair C on the other half-sheet 16A. The plate 10 is then closed, so that the locks of hair C come into contact with the gels 42a to 42d, and then slide at an angle with the longitudinal axis (parallel to the intermediate section 12) of the plate, to penetrate into the grooves 18 of the half-sheet 16A. The hair C is then trapped in the grooves 18 of the half-sheet 16A, without it being possible to slide them out, since they are not only crushed by the ridges 20 of the half-sheet 16B, but also blocked by the shoulder 24, in the case of the furrows diagonally from the edges of the long side 22 of the plate, which prevents all the hair engaging the last furrows opening at the level of this shoulder 24 from coming out of this side.

The bar is then crossed out, so that it remains fixed to the hair lengthwise.

It is a question of promoting the creativity of the hairdresser in the distribution of the colors on the hair C. The present plate 10 makes it possible to vary the coloring of the hair infinitely, to give free rein to the imagination of the hairdresser, so as to transform the hair of a nobody in a real painting in three dimensions we can introduce fine diagonal lines of hair strands, horizontal bands, small dots, circles and other geometric figures, isolated spots of various colors, in short, give free rein to talent the hairdresser who becomes a real artist. Consequently, a single strand of hair can have several colorations over different portions of its length. This is not found anywhere in the prior art.

As mentioned above, the plate 10 is advantageously translucent so that the user can see through the plate if the distribution and the shape of the color spots are as desired once the plate is closed on the hair, to allow an appearance more interesting and attractive visual. Note that between the two half-sheets 16A, 16B, there may be throttling in the hinge zone 12, if necessary. But the half-sheets 16A, 16B, can just as easily be independent of each other, and of different format, depending on the surface of hair on which one wishes to work or .colour. Its texture can be of other form, also valid for the purpose mentioned here, and just as effective.

The results obtained with the device according to the invention have never been obtained until now, since the known devices for coloring by long-lasting striping of the hair did not allow differential coloring of a single lock of hair.

A variable number of coloring substances in the form of gels can be used with the plate 10, but more contrasting and interesting results are obtained with the use of two and more coloring substances, used in a contrasting manner or in monochrome, an infinity of combinations then being possible.

In addition, the present plate 10 adapts to all varieties of hair, whatever their thickness, texture, or length. Since the grooves 18 open directly on the two concave inner edges of the free side 41a of the wafer 10, it will be possible to press one of these edges directly against the head and thus print the pattern of the coloring up to the outer portion from the very root of the hair, without chemically attacking the scalp itself.

Note also that the present invention differs from the GARRETT patent (USA No. 3,433,232) in that it describes a method of surface and temporary application of an aerosol dye on the outside of the hair (and not on their inner side), as suggested in column 3, - lines 32-34 of this patent. The present device on the contrary, allows the long-term impregnation of various dyes on the total circumference of each strand of hair, and without risk of chemical attack on the scalp, while making it possible to color the entire hair, ie, the visible strands of surface. permanence, as well as deeper strands which are visible when the hair moves, or, in fact, work on a long hair at full length in the gradient, because the cut or the length are not at all factors that prevent the use of this technique.

It is envisaged that the hinge 12 is removable, so that two detachable "half-pads" are obtained, while remaining in the spirit of the present invention.

Claims (10)

1. Device for impregnating a coloration with different keys and colors on a hair, consisting of a substantially quadrangular plate with central hinge which defines two half-plates which can be folded one against the other with their internal faces in contiguous position, the inner face of each half-plate revealing a squared, textured profile, formed by a plurality of grooves brought together at right angles to each other., a crest being defined between each pair of adjacent grooves and removable locking means, for maintain the wafer in a closed position, the two half-wafers then being forced one against the other; one of the half-plates intended to receive on point regions of its inner face of the coloring substances in gels and the other of the said half-plates intended to receive on its grooves a lock of hair of thickness determined by the nature of the hair and by the desired result brought into contact with these coloring substances in the closed, barred position of the wafer, these coloring substances therefore being printed on the hair strand previously chosen. 2. Device according to claim 1, characterized in that the plate consists of a translucent material. 3. Device according to claim 2, wherein said material is chosen from the group comprising polyvinyl chloride and polypropylene. 4. Device according to claim 1, wherein the material constituting the wafer is such that the latter will be maintained in any intermediate position of manual folding around its hinge. 5. Device according to claim 1, wherein said grooves are diagonal to each of the side edges of said half-inserts. 6. Device according to claim 1, characterized by the relative arrangement of said half-plates which allows, when the plate is in the closed position and is locked by said locking means, that the grooves of one of the half-plates engage the ridges of the other half-plate and vice-versa, so that the locks of hair thus become trapped in the greenhouse in the plate. 7. Device according to claim 6; a side edge of said plate transverse to said hinge forms a double concavity with a concave portion for each half-plate, so as to promote closer contact of said side edge with the scalp when the plate is applied transversely against the head of the person coloring his hair. 8. Device according to claim 7, the side edge opposite to said side edge of the wafer forms a double convexity with a convex portion for each half wafer, so as to allow the end-to-end alignment of at least two plates by engagement of the convex portions of a plate with the concave portions of an adjacent and coplanar additional plate; said device more particularly intended for coloring a long hair; said plates by closing and barring on this hair are therefore held by themselves, by "biting" in the hair, and then hold in "rosary". 9. Method for selective and punctual application of coloring substances in gel to hair, using a compression plate comprising two half-plates each with a face with a grid profile, connected by a hinge, and which can be folded down 180 ° from an open position to a closed position where the gridded faces of the two half-plates are forced against each other, said method comprising the following steps: a) spreading coloring substances in hair gel on the checkered face of one of said half-wafers of the wafer in the open position; b) placing a lock of hair on the checkered face of the other of said half-wafers; c) closing said wafer to bring gels and hair into contact, in order to print the coloring substances on the wick; d) locking said plate in its closed position by locking means; and e) allowing said wafer to hang freely for a predetermined impregnation time of said gel coloring substances. 10. The method of claim 9, wherein said gel impregnation time is about half an hour.

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