FR2941357A1 - Skin or hair cleaning process, involves cleaning substrate relative to gripping part so as to bring new portion of substrate in treatment zone of portable treatment system and to start cleaning stage again - Google Patents

Abstract

The process involves bringing an extraction portion (20) of a substrate in contact with a skin/hair in a treatment zone (22) of a portable treatment system (10) so as to take care of fatty substances present on the skin. The substrate is cleaned relative to a gripping part (11) by aspiration, propulsion of a fluid on the substrate, stretching/ compression of the substrate, set in contact of the substrate with an extraction material, thermolysis, photolysis, oxidation/reduction treatment, so as to bring a new portion of the substrate in the zone and to start the cleaning stage again. The extraction material has greater affinity for the fatty substances than the substrate. The fatty substance is a sebum. An independent claim is also included for a portable treatment system of skin or hair, comprising a gripping part.

Description

The present invention relates to cleaning the skin or hair. Background Hair tends to lose some of its qualities under the influence of factors such as natural regreasing, sweat, scaling, pollution, moisture and other factors. The visual appearance of the hair or the touch of the hair can thus be degraded. Regreasing, for example due to pollution, weighs down the hair, which then tends to pack. The hair can be difficult to comb in addition to having, for example, a greasy gloss or an unpleasant waxed touch. To fight against these inconveniences, we can use shampoos. Detergent compositions are used to remove dirt or dandruff or to relax the hair. The hair is then rinsed and dried. Shampoos must be renewed regularly, for example after a few days or even after a few hours. In addition, a shampoo requires access to a source of water and preferably a hot or warm water source. Finally, shampoos containing large amounts of surfactants can cause discomfort such as tingling on the scalp or in the eyes. To clean hair by avoiding wetting, there are so-called dry shampoos. Absorbent particles are brought into contact with the hair, and the hair is then actively brushed to remove these particles. Their complete elimination is however difficult to obtain and the results may not be entirely satisfactory. For example, the shine of the hair remains weak and their feel rough. Wipes can also be used for cleaning the hair, allowing the removal of fat when rubbed on the hair. This solution however has the disadvantage of being most often expensive and unecological.

The application JP 2002-238650 discloses a comb comprising an envelope intended to come into contact with the scalp to extract the sebum. JP 9313242 discloses a hair washing system with recirculation and filtration of a solution for extracting sebum. Application FR 2 371 166 describes a comb whose teeth are coated with an absorbent material.

SUMMARY The subject of the invention is, according to one of its aspects, a method for cleaning the skin or the hair using a portable treatment system comprising a substrate, preferably of elongated form, having an affinity for the fatty substances present on the surface of the hair or the skin, this treatment system also comprising a gripping part, allowing the user to manipulate it with one hand, the method comprising the steps of: a) bringing into contact with the skin or the hair, in a treatment zone of the treatment system, a portion of the substrate so as to enable it to be loaded with fatty substances present on the skin or the hair, b) entrain the substrate relatively at the gripping portion, in the longitudinal direction when the substrate has an elongated shape, so as to bring a new portion of the substrate into the treatment zone and start again step a). The invention overcomes all or some of the above disadvantages. The gripping portion may include one or more notches for the fingers. The drive of the substrate can be done for example so that the portion of the substrate located in the treatment zone moves relative to the gripping portion generally parallel to the hair. According to an exemplary implementation of the invention, the portion of the substrate previously located in the treatment zone can be cleaned and reused in the treatment zone. The substrate may be in a band and may form a closed loop. When the substrate is striped, its width is less than or equal to 10 cm better than or equal to 5 cm. Its length can range from 5 to 200 cm better from 10 to 50 cm for example. The total contact area of the substrate with the skin or hair can range from 1 cm 2 to more than 500 cm 2, preferably from 4 to 40 cm 2. The substrate can be cleaned by at least one of the following actions: suction, propelling a fluid on the substrate, stretching and / or compressing the substrate, contacting the substrate with an extraction material having a greater affinity for fatty substances than the substrate, - thermolysis, - photolysis, - oxidation or reduction treatment, this list not being limiting, the above actions being able to combine.

Alternatively, the portion of the substrate previously located in the treatment zone may be stored in the cleaning system. The substrate can then be unwound from a spare space of the treatment system and be wound into a storage space, after passing through the treatment zone. In an exemplary implementation of the invention, a second substrate is brought into the treatment zone and hair is arranged between the first and second substrates in the treatment zone. The first and second substrates may each form a closed loop. The extraction of fatty substances on the surface of the hair or skin can be carried out without slipping of the substrate relative to the hair or to the skin in the treatment zone. This can avoid pulling on the hair. The treatment system can be moved relative to the hair or the skin and the substrate can be moved away from the gripping portion as the treatment system moves relative to the hair or the skin. The displacement of the treatment system can be assisted or caused by an engine or be caused solely by the displacement without sliding of the substrate in contact with the skin or the hair. Another subject of the invention, according to another of its aspects, is a portable system for treating the skin or the hair, comprising: a gripping part enabling the user to manipulate it with one hand; first rotary device; - a second rotary device; - a substrate able to pass between the rotating devices in a treatment zone where one face of the substrate can contact the skin or the hair, the substrate having an affinity for the fatty substances, the substrate rotating in a closed loop between the rotary devices or being unwound by rotation of the first rotary device and wound by rotation of the second rotary device.

Rotating devices are preferably rollers. The substrate may form a closed loop and the treatment system may include a substrate cleaning system in a cleaning zone different from the treatment zone.

The invention further relates, in another of its aspects, to a treatment system comprising: a handpiece comprising: a gripping part; a substrate capable of scrolling or turning relative to the gripping part; , having a portion adapted to come into contact with the hair or skin to be cleaned, - a substrate cleaning system (which may or may not be part of the handpiece). By "hand piece" (hand piece) is meant a part that can be manipulated by the user with one hand to perform the treatment. The treatment system may comprise a second rotating or moving substrate in a closed loop, the treatment area being able to receive hair between two faces facing the substrates. The invention will be better understood on reading the detailed description which follows, of non-limiting examples of implementation thereof, and on examining the appended drawing, in which FIGS. 1 to 4 represent , partially and schematically, examples of skin or hair treatment systems according to the invention. Processing Systems FIG. 1 shows a treatment system 10 produced in accordance with an exemplary implementation of the invention. This treatment system 10 comprises a gripping portion 11, for example in the form of a handle, which can be grasped with one hand and a collector 12 of fatty substances present on the surface to be treated S, for example the skin or the hair, harvester 12 defining a collection surface. In the example illustrated in FIG. 1, the treatment system 10 also comprises a cleaning system 13 of the harvester 12.

In the example of FIG. 1, the harvester 12 comprises a strip substrate in the form of a closed loop moving between rollers 15 and 16 which are, for example, parallel axes of rotation, the substrate having an affinity for fatty substances. The displacement of the band can be ensured by a motorized drive of at least one of the rollers 15 and 16. As a variant, the band can move in contact with the surface to be treated S without sliding relative to the latter, and is the displacement of the treatment system relative to the surface to be treated which causes a displacement of the band relative to the gripping portion 11. At a given moment, the harvester 12 comprises an extraction portion 20 which is in a zone of treatment 22, wherein the substrate can come into contact with the surface to be treated S. The cleaning system 13 is arranged to treat another portion of the substrate, for example a used portion 24 which is opposite to the portion of the substrate. extraction 20 at the same time. The displacement of the band can take place only when the processing system 10 is itself moved relative to the surface to be treated S. Alternatively, the displacement of the band can take place independently of the surface to be treated, under the the effect of a motorized drive as mentioned above, this motorized drive being carried out for example continuously or intermittently, which can be controlled if necessary by the support of the user on a control button.

The cleaning system 13 may operate continuously or intermittently, its operation being for example slaved to the displacement of the band, so that the cleaning system 13 stops working after a predefined time when the band stops scrolling. In order to use the treatment system 10 illustrated in FIG. 1, the user can bring the treatment zone 22 into contact with the surface to be treated S and move the treatment system 10 relative to it. The fatty substances present on the surface S are harvested by the substrate and succeed, following the running of the band, the cleaning system 13 which eliminates them at least in part and allows to renew the cleaning properties of the harvester 12 as and when of its use. In the variant illustrated in FIG. 2, the treatment system 10 comprises two harvesters 12 coming respectively on either side of a treatment zone 22 so that the hair simultaneously comes into contact with the faces opposite the two portions. Each harvester 12 comprises, for example, a closed loop scrolling band. The direction of travel of the strips is preferably such that the extraction portions 20 scroll in the same direction, as illustrated.

The direction of travel of the extraction portions 20 may, as shown, be parallel to the longitudinal axis X of the gripping portion 11, but it is not beyond the scope of the present invention when the direction of travel has a different orientation. relative to the axis X, for example an orientation which is perpendicular or oblique to it, this orientation may, if necessary, be adjustable by the user or variable angle during the operation of the treatment system. In the example illustrated in FIG. 2, the harvesters 12 and the associated cleaning systems 13 are carried by two respective parts 40 and 41 of the processing system 10, connected for example by a hinge 42 which makes it possible to separate them so as to facilitate access to the treatment zone 22, then bring them together to treat a lock of hair introduced into this treatment area. The harvester 12 may also be, as illustrated in FIG. 3, in the form of a strip which passes between two rollers 15 and 16 respectively serving to accommodate the strip by winding it after contact in the treatment zone 22 with the surface to be treated S, and to renew the extraction portion 20 by unwinding the strip to allow its movement in the treatment zone. The roll 15 allows storage of the length of tape used and the tape wound on this roll 15 can be stored in the processing system 10 until the clean tape is used up. The used band can be cleaned out of the treatment system or alternatively removed and replaced with a new band. In the variant illustrated in Figure 4, the harvester 12 is rotatable and rotates about an axis of rotation which is for example perpendicular to the treated hair. The harvester 12 can still be a ball mounted in a cage in a manner similar to the so-called roll on applicators. The cleaning system 13 is for example arranged to clean the portion of the harvester located diametrically opposite the extraction portion 20. The cleaning of the harvester 12 by the cleaning system 13 can be effected in various ways.

The cleaning can be achieved by the removal of the collected fatty substances, for example by the application on the collection surface of at least one solvent, micellization product, solvent emulsion or ionic liquid. Fluid ejection and / or suction systems can still be used. Different disposal systems can be combined. The application of a cleaning fluid may be combined with fluid ejection and / or aspiration. The solvent or solvents applied to the collection surface are preferably chosen to dissolve all or part of the collected fatty substances. The solvent or solvents may be applied by an applicator member which is, for example, an applicator pad impregnated with the solvent or solvents. The solvent (s) can still be projected onto the collection surface to be cleaned and then sucked back. The solvent (s) used can be liquids whose boiling point is moderate (from 20 ° C. to 80 ° C.), such as methanol, ethanol, acetone, methyl ethyl ketone (MEK) or tetrahydrofuran. (THF). The solvent or solvents used can also be liquids with a so-called average boiling temperature (from 80 ° C. to 160 ° C.), such as n-propanol or butyl acetate. The liquid solvent (s) used may also be at a high boiling temperature (160 ° C. to 250 ° C.), for example paraffins or propylene carbonate. The solvent (s) used may also be gaseous at ordinary temperature but stored under pressure and in liquid form, for example light alkanes such as propane, isobutane or butane, or ethers such as dimethyl ether, or certain fluorinated compounds such as 152A or 132A. The solvent (s) used may also be diluted in water for use. In a nonlimiting manner, preferred solvents are propylene carbonate, acetone, ethanol or ethyl acetate. The micellization composition (s) used may be compositions comprising micelles or compositions capable of producing micelles in contact with the fats. The micellisation compositions used comprise, for example, a mixture of water and one or more surfactants or a mixture of water, one or more surfactants and one or more hydrophobic substances. The surfactant or surfactants used are, for example, anionic, carboxylic, sulphates, sulphonates or phosphates surfactants such as lauryl ether sulphates (LES) or lauryl sulphates (LS). They may also be nonionic or amphoteric surfactants, for example alkylpolyglucosides (APG) or surfactants whose hydrophilic portion is a polyether or cationic surfactants such as, for example, surfactants based on quaternary ammonium salts containing one or more fatty chains.

The composition (s) used may be simple emulsions, multiple or inverse emulsions, microemulsions or nanoemulsions. The ionic liquid or liquids used may or may not be miscible in water, for example ionic liquids based on imidazolium salts. A fluid ejection or suction system may be used to press the hair against the collection surface. This fluid ejection system comprises for example a fan to send air against the surface to be cleaned, and may also include a pressurized gas tank such as for example pressurized air or any other gas under pressure, for example CO2.

The suction system creates a vacuum or suction effect, and may be disposed facing the collection surface to clean it, or behind the collection surface to suck the hair against the harvester during cleaning. Without departing from the scope of the invention, it is also possible to achieve the elimination of bodies collected on the collection surface by putting this surface in contact with a paper, a fabric, an absorbent material or an absorbent powder, having an affinity for fats. The renewal of the collection surface by removal of the harvested fat particles, or other harvested bodies, can also be achieved alone or in part by a mechanical member performing a compression or an expansion of the collection surface.

Various mechanical compression or expansion members that can be applied to a band can for example be used.

For example, heating or cooling or pressurizing devices may be combined with the various means for eliminating the bodies harvested on the collection surface. The different means of elimination of the harvested bodies can also be combined with each other.

The cleaning system may include an ultraviolet irradiation device or an ultrasonic emission device. One can combine mechanical actions by contact and actions without contact. The treatment system may include teeth for combing the hair downstream and / or upstream of the treatment zone.

Collection Surface The collection surface has an affinity for fatty substances, and may be at least partially defined by a substrate having an affinity for fatty substances. This substrate may be of natural origin, such as cotton, cellulose or wool.

The substrate may also be synthetic and comprise for example a material, polymers or oligomers of any kind, or inorganic or organomineral materials. The polymer or polymers for collecting the fatty substances may be, according to a non-limiting example, chosen from oleophilic polymers. The polymers may be homopolymers or copolymers. These polymers may be random polymers or gradient polymers or block polymers. Chemically these polymers may be polyolefins, polyesters, polyurethanes, polyacrylates, polyamides, polyethers, polyureas or silicones. Groups hanging or attached to the skeleton can play on the physicochemical properties of polymers. Hanging or hanging groups close to the chemical nature of the fatty substances to be harvested will advantageously be used. These groups are for example carbon chain groups or carbon esters or hydrophobic groups such as aromatics for example. A polymer resulting from the polymerization of cyanoacrylates, for example octyl (branched or unbranched) acrylate, can advantageously be used. The substrate defining the collection surface may be flexible or rigid, being elastically deformable or not.

The collection surface may be defined by a soft, adhesive, or gel-like material. For example, a pressure-sensitive adhesive or a hydrogel may be used. The collection surface may also be defined at least partially by a liquid, the harvester being configured so that the liquid remains on the treatment system without being deposited on the hair, except in the form of traces possibly. The liquid used is, for example, an ionic liquid. The liquid may be contained in a porous, alveolar or perforated structure. The substrate defining the collection surface may be in the form of a homogeneous material such as a film obtained by casting or forming. An example of a fat-collecting material is, for example, a material used for collecting sebum on the skin, this material possibly being in the form of granules or platelets. Another material that can be used, without limitation, is for example a compound used as an oil gelling agent. The substrate may be a composite material which may comprise extraction material grains having an affinity for the fatty substances, maintained by a support matrix, which may not have the same affinity for the fatty substances. The substrate may also be fibrous, and comprise woven or non-woven fibers in the form of flocking, felt, fabric. Stretch fibers may still be used. Fibrous polyethylene films obtained by stretching can advantageously be used. The collection surface may be defined by a porous or porous substrate, preferably open, permitting permeation. Such a material is for example a rigid or flexible foam with open cells. Polyurethane foams can be used, for example being obtained by polymerizing a diol with a diisocyanate in the presence of a little water. It is also possible to use polyisocyanurate or polystyrene foams or phenolic foams. Mineral compounds can be used, for example, cellular glass, produced by a mixture of crushed glass and carbon, heated to over 1000 ° C, perlite, derived from a siliceous volcanic rock, expanded into closed white cells. hard-walled, inert and neutral, vermiculite, derived from a mica type rock or compounds formed from carbonate, such as diatoms. Natural products such as cork can also be used.

The collection surface may be defined by a porous material having an affinity for the fatty substances and / or by a porous material impregnated with a liquid having an affinity with fatty substances. The collecting surface can be made with various shapes, being for example flat, concave or convex. In the case where the collection surface is defined at least partially by a solid substrate, the microscopic or macroscopic shape of the surface is advantageously chosen to improve the harvesting efficiency of the fatty substances. The harvester may have areas having one or more extraction materials, having an affinity for fats and areas of other materials. The collecting surface may be a continuous surface or arranged in a plurality of zones arranged next to each other and disjointed. The collection surface may be ridged, serrated, striped or honeycombed. The treatment system and for example the harvester may comprise comb teeth between which the hair is engaged. The collecting surface may be defined at least partially by these teeth. Non-planar surfaces, for example corrugated, serrated, ridged or comb-toothed, make it possible to increase the area of contact of the hair with the collection surface.

The collection surface may range from 1 to 500 cm 2. Preferably, the extent of the collection surface is between 4 cm 2 and 40 cm 2. The treatment system may include means for plating the hair against the collection surface. Of course, the invention is not limited to the examples which have just been described. The expression containing one must be understood as being synonymous with at least one, unless the opposite is specified.

Claims (12)

REVENDICATIONS1. A method of cleaning the skin or hair using a portable treatment system (10) comprising a substrate having an affinity for the fatty substances present on the surface of the hair or skin, this cleaning system also comprising a grasping portion (11), allowing the user to manipulate the treatment system of a hand, the method comprising the steps of: a) bringing into contact with the skin or the hair, in a treatment zone 10 (22) of the treatment system, a portion (20) of the substrate so as to allow it to be loaded with fat present on the skin or hair, b) drive the substrate relative to the gripping portion so as to bring a new portion of the substrate in the treatment zone and repeat step a). The method of claim 1, wherein the portion of the substrate previously located in the treatment zone is cleaned and reused in the treatment zone. 3. Method according to claim 2, the substrate minus the following actions: suction, propulsion of a fluid on the substrate, stretching and / or compression of the substrate, contacting the substrate with a high affinity material for fatty substances than the substrate, - thermolysis, - photolysis, - oxidation or reduction treatment. 4. Method according to claim 1, the portion of the substrate previously located in the treatment zone being stored in the cleaning system. 5. Method according to any one of the preceding claims, the substrate being in band. 30 The method of any one of the preceding claims, the substrate forming a closed loop. being cleaned by one at the extraction having a plus 7. Method according to any one of claims 5, the substrate being unwound from a reserve space of the treatment system and being wound in a storage space after passing through the treatment zone. 8. A method according to any one of the preceding claims, wherein a second substrate is fed into the treatment zone and hair is disposed between the first and second substrates in the treatment zone. 9. Method according to the preceding claim, the first and second substrates each forming a closed loop. 10. A method as claimed in any one of the preceding claims, wherein the extraction of fatty substances from the surface of the hair or skin takes place without slipping of the substrate with respect to the hair or skin in the treatment zone. A method according to any one of the preceding claims, wherein the treatment system is moved relative to the hair or the skin and the substrate being moved relative to the gripping portion as the treatment system moves relative to the hair or skin. 12. Portable skin or hair treatment system, comprising: - a gripping portion (11) allowing the user to manipulate the treatment system of a hand; a first rotary device (15), a second rotary device (16), a substrate able to move between the rotary devices in a treatment zone where a face of the substrate can contact the skin or the hair, the substrate having an affinity for the fatty substances, the substrate rotating in a closed loop between the rotating devices or being unwound by rotation of the first rotary device and wound by rotation of the second rotary device. 16. Treatment system according to the preceding claim, wherein the rotary devices are rollers. 17. Processing system according to claims 12 and 13, the closed loop substrate and the treatment system comprising a cleaning system (13) of the substrate in a cleaning zone different from the treatment zone. System according to any one of claims 12 to 14, comprising a second rotating closed loop substrate, able to scroll in the treatment area, the latter being able to receive hair between two faces facing the substrates.