WO2023126603A1 - Appareil de coiffure chauffant a vapeur - Google Patents
Appareil de coiffure chauffant a vapeur Download PDFInfo
- Publication number
- WO2023126603A1 WO2023126603A1 PCT/FR2022/052490 FR2022052490W WO2023126603A1 WO 2023126603 A1 WO2023126603 A1 WO 2023126603A1 FR 2022052490 W FR2022052490 W FR 2022052490W WO 2023126603 A1 WO2023126603 A1 WO 2023126603A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steam
- pins
- hair
- hairdressing
- heating
- Prior art date
Links
- 210000004209 hair Anatomy 0.000 claims abstract description 139
- 238000010438 heat treatment Methods 0.000 claims abstract description 95
- 230000001680 brushing effect Effects 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 230000001052 transient effect Effects 0.000 claims description 11
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000011282 treatment Methods 0.000 description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 37
- 210000003128 head Anatomy 0.000 description 26
- 230000007547 defect Effects 0.000 description 23
- 239000007788 liquid Substances 0.000 description 20
- 230000000930 thermomechanical effect Effects 0.000 description 17
- 230000008016 vaporization Effects 0.000 description 15
- 238000009834 vaporization Methods 0.000 description 14
- 238000005259 measurement Methods 0.000 description 11
- 230000000875 corresponding effect Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000003745 detangling effect Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 210000004761 scalp Anatomy 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000002537 cosmetic Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010000496 acne Diseases 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003646 hair health Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 239000000725 suspension Substances 0.000 description 1
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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
- A46B9/023—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in hair brushes, e.g. hair treatment, dyeing, streaking
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
- A45D2/001—Hair straightening appliances
- A45D2/002—Hair straightening appliances with combs
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D24/00—Hair combs for care of the hair; Accessories therefor
- A45D24/04—Multi-part combs
- A45D24/10—Multi-part combs combined with additional devices
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D24/00—Hair combs for care of the hair; Accessories therefor
- A45D24/22—Combs with dispensing devices for liquids, pastes or powders
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/0006—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water specially adapted to feed the bristle upper surface
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
- A46B15/003—Enhancing with heat
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/15—Temperature
- A45D2200/155—Heating or cooling means, i.e. for storing or applying cosmetic products at a predetermined temperature
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/104—Hair brush
Definitions
- the present invention relates to the general technical field of hairdressing appliances, for example for domestic use, intended to provide shaping, embellishment and / or improvement of the health of the hair, and more specifically to the field of electric portable hairdressing appliances such as hairdressing brushes, straightening brushes, detangling brushes or hair straighteners.
- the invention relates more specifically to a portable hairdressing appliance comprising at least one heating element intended to come into contact with the hair as well as means for emitting steam configured to subject said hair in contact with said steam to a flow of heating element.
- thermomechanical steam treatment is for example carried out by means of a brush comprising heating pins carried by a brush head which is also provided with orifices diffusing steam.
- This emission of steam associated with the mechanical brushing action as well as the thermal action procured by the heating pins, facilitates the styling operation and makes it possible to improve its efficiency, while preserving, at least to a certain extent measurement, the appearance of the hair.
- the known devices do not, however, make it possible to achieve an optimal result, in particular concerning the preservation and improvement of the health of the hair as well as their embellishment.
- the known devices do not make it possible to obtain a significant improvement in the appearance of the hair, and in particular in their shine and in their surface condition.
- the objects assigned to the invention therefore aim to propose a new hairdressing appliance which, while making it possible to obtain, easily and quickly, particularly satisfactory hair styling and styling effects, noticeably improves the appearance of the hair, and in particular its softness, its suppleness, its shine , as well as their surface condition.
- Another object of the invention aims to provide a new hairdressing appliance which makes it possible to significantly reduce the density of surface defects of the hair.
- Another object of the invention aims to provide a new hairdressing appliance which makes it possible to significantly reduce the density of defects of the dark spot type in the middle of the scales, and/or of the type of scale lifting at the ends. scales.
- Another object of the invention aims to provide a new hairdressing device which allows a tangible embellishment of the hair, with in particular a consequent increase in the shine of the hair.
- Another object of the invention aims to provide a new hairdressing appliance whose design makes it possible to subject the hair in a particularly effective manner to a flow of steam.
- Another object of the invention aims to provide a new hairdressing appliance of particularly simple, reliable and compact construction.
- Another object of the invention aims to provide a new hairdressing appliance whose use is particularly safe and comfortable, with a minimized risk of burns.
- Another object of the invention aims to provide a new hairdressing appliance of light and economical design.
- Another object of the invention aims to provide a new hairdressing appliance making it possible to simultaneously ensure, in a simple and rapid manner, a disciplining of the hair, or even a detangling and/or a shaping, and a hair beautification.
- Another object of the invention aims to provide a new hairdressing device whose energy consumption is optimized.
- a hairdressing device comprising at least one heating element intended to come into contact with the hair as well as means for emitting steam configured to subject to a flow steaming said hair in contact with said heating element, said hairdressing device being characterized in that it is designed to be in an operational operating mode in which said heating element has a first surface temperature whose value is at least equal at 110° C., while said vapor flow has a mass flow whose value is at least equal to 0.5 g/min, preferably between 0.5 g/min and 3 g/min.
- FIG. 1 is a schematic perspective view of a hairdressing appliance according to the invention, consisting in this case of a hairdressing brush;
- FIG. 1 is an exploded view of the hairdressing appliance of Figure 1;
- FIG. 3 is a schematic perspective view of the head of the device of the previous figures.
- FIG. 4 is a schematic top view of the head of a hairdressing device according to the invention, consisting in this case of a hairdressing brush, which differs from the device of Figures 1 to 3 essentially by a slightly different configuration (one row on each side instead of two alternate rows) of the lateral disentangling pins which surround the main brushing zone, which is identical to that of the brush of FIGS. 1 to 3;
- - Figure 5 illustrates in isolation, in a schematic perspective view, a one-piece plastic part which contributes to form the head of Figure 3 or that of Figure 4 and which are part of the tensor pins;
- FIG. 6 illustrates in isolation, in a schematic perspective view, a one-piece piece of aluminum or cast aluminum which contributes to forming the head of Figure 3 or that of Figure 4, and of which heating pins and steam pins;
- FIG. 7 is a graph schematically illustrating an example of the evolution of the mass flow rate of the flow of water vapor emitted by the hairdressing appliance of the preceding figures over time, in a transient mode of operation which follows the start of the apparatus, then in an operational mode of operation which follows the transient mode of operation, the mass flow rate of the stream of vapor being substantially constant in the operational mode of operation;
- FIG. 8 is a graph schematically illustrating another example of evolution of the mass flow rate of the flow of water vapor emitted by a hairdressing appliance according to an alternative embodiment of the invention, in a transient mode of operation which follows the start-up of the device, then in an operational operating mode which follows the transient operating mode, the mass flow rate of the vapor flow varying periodically between two extreme values in the operational operating mode;
- FIG. 9 is a graph schematically illustrating so-called “class A” surface defect density values (dark spots in the middle of the scales) for seven series of four hairs each, said hair being healthy and washed (data represented by squares), then artificially damaged (data represented by triangles);
- FIG. 10 is a graph schematically illustrating the variation values of the density of class A surface defects for a series of artificially damaged hairs which have been subjected either to a thermomechanical treatment without steam (data represented by circles), or to a treatment thermo-mechanical with concomitant steam treatment (data represented by squares), for seven different temperature values of thermo-mechanical treatment;
- FIG. 11 is a microscopic photograph of a washed healthy hair
- FIG. 12 is a microscopic photograph of washed healthy hair which has been artificially degraded by 25 immersion-drying cycles with a drying time per cycle of 10 s;
- - figure 13 is a microscopic image of washed healthy hair which has been artificially degraded in the same way as that of the image in the previous figure, and which presents defects of different classes (class A: dark spot in the middle of scales , class B: semi-circular white zone corresponding to detachments or lifting of scales; class C: appearance of the endocuticle following tearing of the upper parts of the scales; class D: type III notches, parallel to the axis of the hair and due to the cracking of the cuticle) identified by a corresponding initial on the photograph;
- class A dark spot in the middle of scales
- class B semi-circular white zone corresponding to detachments or lifting of scales
- class C appearance of the endocuticle following tearing of the upper parts of the scales
- class D type III notches, parallel to the axis of the hair and due to the cracking of the cuticle
- FIG. 14 is a microscopic shot of a hair embellished by a combined supply of heat and steam according to temperature and mass flow rate of steam in accordance with the invention.
- the hairdressing appliance 1 in accordance with the invention is preferably portable, that is to say that at least part, and preferably all, of the appliance 1 is designed to be gripped and handled by hand.
- the hairdressing appliance 1 is preferably a portable electric appliance, intended to be connected to the electricity distribution network in order to be electrically supplied. It is however alternatively conceivable, without departing from the scope of the invention, that the device 1 embeds electrical supply batteries, possibly rechargeable.
- the hairdressing appliance 1 is preferably designed for use in a domestic setting, and is intended to ensure hair shaping, and/or hair embellishment and/or hair health improvement.
- the hairdressing appliance 1 is designed so that the user uses the hairdressing appliance 1 on himself, that is to say on his own hair.
- the hairdressing appliance 1 is designed for use by the user on the hair of a third person (or other user).
- the hairdressing appliance 1 is intended for use in a domestic setting by a user ( woman or man) lacking particular professional skills in hairdressing.
- the hairdressing appliance 1 constitutes a hairdressing brush.
- the invention is however not limited to a hairdressing appliance 1 forming a hairdressing brush, and the hairdressing appliance 1 can for example constitute a smoothing brush, a detangling brush or a straightener, without however out of the scope of the invention.
- the hairdressing device 1 advantageously comprises a handle 2 for manual gripping, which is intended to be gripped by hand, and for example grabbed, by the user, to manipulate the hairdressing device.
- the handle 2 extends for example longitudinally, along a central longitudinal axis X-X', between a first end from which emerges for example an electric power cable, and an opposite second end.
- the hairdressing appliance 1 advantageously comprises a head 3 for engaging the hair, that is to say preferably for coming into contact with the hair in order to subject it to a mechanical, thermal and/or fluidic action.
- the head 3 is advantageously carried by said handle 2, and extends for example longitudinally, along said central axis X-X', between a rear end fixed to the second end of the handle 2, and a free front end.
- the handle 2 has a substantially elongated shape which is extended by the head 3, which is advantageously wider than the handle 2 and has for example a substantially oblong general shape.
- the handle 2 and the head 3 are formed, at least in part, by a main body in one piece, of the box type, for example made of plastic material.
- the head 3 advantageously has, as illustrated in the figures, a front face 3A preferably provided with brushing pins 7 between and against which the hair is intended to be located and to move, when using the hairdressing device 1 .
- the hairdressing appliance 1 comprises at least one heating element 4 intended to come into contact with the hair, to transmit heat thereto, as well as means for emitting steam, advantageously steam, configured to submit to a stream of steam (advantageously steam) said hair in contact with said heating element 4.
- the hairdressing appliance 1 is designed so that the hair is simultaneously:
- said substance preferably water in a liquid state in the form of a mist of droplets and/or microdroplets, or
- water vapour should not be limited to its strictly scientific definition and here covers water in the gaseous state, the particles of liquid water in suspension in the air, or a mixture of gaseous water and liquid water particles (droplets / microdroplets) suspended in the air.
- the term "water” can mean any liquid containing mainly water (that is to say at least 50% by weight of water, and preferably at least 80% by weight of water, even more preferably at least 95% by weight of water) and capable of being transformed into steam, and thus includes distilled water, running tap water, but also various aqueous solutions containing elements cosmetics, olfactory, etc.
- Said means for emitting steam comprise for example, as illustrated:
- liquid preferably water
- said flow of vapor preferably water vapour
- a supply device 6 for supplying liquid, preferably liquid water, to the vaporization device 5.
- the vaporization device 5 comprises for example a vaporization chamber 50 provided with a liquid supply inlet 501 and at least one vapor outlet 502.
- the vaporization device 5 also comprises a first heating device 51 designed to heat the vaporization chamber 50 and thus transform, within the vaporization chamber 50, the liquid water into water vapor.
- the first heating device 51 is formed for example by resistive elements capable of heating by Joule effect (for example one or more heating elements, or thermistor(s), with a “Positive Temperature Coefficient” (PTC)), said resistive elements being advantageously in contact with said vaporization chamber 50.
- Said vapor outlet 502 is for its part advantageously in fluid communication with the surrounding outside air, preferably permanently, preferably via at least one orifice 710 steam ejection arranged on the side of the front face 3A, as will be described in more detail in the following.
- said vapor ejection orifice(s) 710 is (are) in fluid communication with the interior of vaporization chamber 50 via a conduit device 52 connected on one side to the steam outlet 502 and on the other to said at least one steam ejection orifice 710.
- the vaporization chamber 50 is permanently maintained at atmospheric pressure, which avoids having to resort to an outlet valve, due to the absence of a rise in pressure of the vapor. within the steam chamber 50 and the hairdressing device 1.
- the absence of risk of overpressure and therefore the absence of the need for means to prevent or manage such overpressures
- the temperature of the steam flow advantageously does not exceed 100°C.
- the speed of the flow of steam and the distance traveled by the latter outside the device 1 are limited due to the absence of overpressure, which contributes to limiting the risk of burning the scalp, and therefore to a greater safety for the user.
- Said supply device 6 comprises for example a reservoir 60 for storing a quantity of liquid (preferably liquid water) and a pump 61 connected to said reservoir 60 and to said vaporization device 5.
- the reservoir 60 is for example removable, that is to say it is detachable from the main body of the device 1, which makes it possible to dispense with an earth connection for the power supply of the device 1 .
- the tank 60 is preferably substantially at atmospheric pressure.
- the use of a pump 61 associated with a tank 60 at atmospheric pressure, rather than a pressurized tank associated with a valve, also allows optimum safety of use and increased reliability in terms of flow control.
- said pump 61 is a peristaltic pump, which allows very fine control of low flow rates and guarantees relatively constant flow rates.
- the device 1 is therefore designed to subject the hair engaged by the head 3 to a thermo-mechanical steam treatment, according to which the hair is simultaneously subjected to:
- a steam treatment consisting in subjecting to steam (preferably steam) the hair engaged by the head 3 and in contact with and / or proximity to the heating element 4, advantageously via the orifice(s) 710 for ejection of steam/steam pins 71 which will be described below.
- steam preferably steam
- the simultaneous implementation, and advantageously combined, of these three treatments advantageously makes it possible to beautify, and/or to treat, and/or to repair the hair, and advantageously also allows the shaping the hair, in particular by disciplining it, in particular under the specific conditions described below.
- the hairdressing appliance 1 is advantageously designed to be in an operational operating mode EN, that is to say a normal, nominal operating mode, in which the operating parameters of the hairdressing appliance 1, and possibly all the operating parameters of the hairdressing device 1, are, in the absence of positive intervention by the user, substantially constant, or do not vary according to a large amplitude, or even vary automatically according to a periodic pattern (sinusoidal or crenellated for example) which can correspond for example to a pulsed steam flow.
- the operational operating mode EN corresponds to a stationary, cruising regime of the hairdressing device 1 .
- the device 1 Before being in the operational operating mode EN in question, the device 1 is for example designed to be in a transient operating mode ET during which one, or several, or all of the operating parameters of the device hairstyle 1 evolve, preferably continuously and gradually, until they reach their nominal values corresponding to the aforementioned operational mode of operation EN.
- the device 1 when starting up the device 1, which corresponds for example to a power supply of the latter (preferably controlled by a switch), the device 1 is first of all in the mode transient operation ET, during which the heating element 4 gradually rises in temperature, as do the dedicated bodies of the steam emission means (first heating device 51).
- the transient operating mode ET is then followed by the operational operating mode EN, in which the device 1 remains until it is, for example, switched off (end of electrical power supply) by the user.
- the transition from the transient operating mode ET to the operational operating mode EN is preferably carried out automatically, without positive intervention by the user, who can however be warned of reaching the operational operating mode EN by any suitable signaling means. (light / or sound signal, jet of steam, etc).
- the device 1 is in the operational mode EN once a predetermined time has elapsed from the start-up (power supply) of the device 1.
- the predetermined time in question which may possibly depend on certain technical characteristics of the device 1 (electrical power for example) is advantageously between 10 s and 60 s, without this range being of course limiting.
- said predetermined duration could be replaced or supplemented by a measurement of the temperature of the vaporization chamber 50 in order to ensure that the latter is indeed at a temperature guaranteeing the vaporization of the liquid.
- the heating element 4 when the device 1 is in the operational mode EN, the heating element 4 has a first surface temperature (that is to say a surface temperature) whose value is at least equal to 110° C., while said flow of water vapor has a mass flow whose value is at least equal to 0.5 grams per minute (g/min).
- the surface of the heating element 4, which is intended to come into contact with the hair during the engagement of the latter by the head 3 has on the surface a temperature, corresponding to said first surface temperature, the value of which is greater than or equal to 110°C.
- the flow of water vapor emitted by the hairdressing appliance 1, preferably at the level of the head 3, has a mass flow whose value is greater than or equal to 0.5 g/min.
- the value of the mass flow corresponds to a non-zero substantially constant, unique value.
- the device 1 is advantageously provided with a control system configured to maintain said mass flow rate substantially constant, fixed, throughout the duration during which said device 1 is placed in an operational operating state EN by said system. control.
- operational operation EN that is to say during the stationary mode or cruising speed of the device 1, the user benefits from a constant and continuous flow of steam, as long as the device is supplied with electrical energy and as long as the reservoir 60 still contains liquid to be vaporized.
- the value of said mass flow rate is on the contrary variable in the operational operating mode EN, and can for example alternately affect a minimum value (which may be zero) or a maximum value, and preferably cyclically, periodically, according to sequences of predefined durations.
- the value of said mass flow corresponds to an average value, which is lower than the maximum value Vmax but higher than the minimum value Vmin.
- the aforementioned mass flow rate is advantageously determined by calculating the difference in mass of the tank 60 for a predetermined duration in operational operating mode EN.
- weighing and time measurement are advantageously used to determine the mass flow rate.
- the mass and the difference in mass of the reservoir 60 can be determined easily and accurately with common weighing instruments, by carrying out several measurements, the results of which are for example averaged.
- the tank 60 filled with liquid preferably water
- the scale is then tared before removing the reservoir 60 from the scale pan.
- the tank 60 - which now contains less water - is weighed again on the already tared scale.
- a measurement of the mass of liquid water moved by a pump in a given time is also equivalent to a measurement of the flow rate (volume per unit time) of the pump.
- the steam flow is pulsed, so that said mass flow rate varies cyclically, periodically, for example according to a slotted pattern, it is possible, if necessary, to measure an average value and / or for example to exclude measures the periods of time substantially corresponding to an absence of flow.
- said value of said first surface temperature of heating element 4 is at least equal to 120°C, and is advantageously between 120°C and 200°C. Even more preferably, in the operational operating mode EN, the value of said first surface temperature is between 130° C. and 170° C., preferably between 140° C. and 160° C., for example substantially equal to 150° C. vs.
- the value of said mass flow rate is for its part advantageously between 0.5 g/min and 3 g/min, and even more preferably between 0.5 g/min and 1 .1 g/min, and is for example substantially equal to 0.8 g/min.
- a flow rate range guarantees quite interesting autonomy for the hairdressing appliance 1 without having to provide it with a reservoir 60 that is too bulky.
- such a flow rate does not consume too much liquid from the reservoir so as to confer sufficient autonomy to allow a user to carry out at least one, or even several styling cycles without having to refill the reservoir 60.
- the hairdressing device 1 is designed so that, in the operational operating mode EN, the values of said first surface temperature of the heating element 4 and mass flow rate of the flow of steam (preferably steam) are advantageously fixed, that is to say they are preferably not modifiable, in particular by the user.
- the hairdressing appliance 1 is advantageously devoid of adjustment means making it possible to adjust or adjust one and/or the other of said values of said first surface temperature and mass flow rate of the flow of vapor of water.
- This makes it possible to offer the user a hairdressing appliance 1 that is perfectly optimized to offer him the best care, the best appearance, for his hair, and in particular their softness, their suppleness, their shine, as well as their surface condition.
- the hairdressing appliance 1 can thus be used optimally by a user without any particular knowledge in the field of hair care or hair embellishment.
- the mass flow rate of the water vapor flow varies, with for example, after the start-up of the device 1 (which occurs at the instant to in the examples of the graphs of FIGS. 7 and 8), a high flow rate for a predetermined period (burst (“burst” in English) of initial steam with a mass flow rate value of approximately 1.2 g/min between the instants ti and ti + 15 s in the example of the graph in FIG. 7 and between times t1 and t3 in the example in FIG. 8), followed by a sudden decrease down to a substantially zero mass flow rate value (between times ti + 15 s and ti + 20 s in the example of the graph in FIG.
- burst burst
- the time that separates, in the examples of figures 7 and 8, the start-up at time to of the device 1 (power-up) and the burst of steam at time t1 may depend on certain technical characteristics of the device 1 (electrical power of the first heating device 51 for example) and is advantageously between 10 and 60 seconds, without this range being of course limiting.
- the value of said first surface temperature of the heating element 4 preferably also varies during the transient operating mode ET, and preferably increases gradually, for example until reaching said value at least equal to 110° C. corresponding to the operational operating mode EN.
- the invention has thus made it possible to demonstrate that the simultaneous supply of heat and steam (preferably steam), with the specific values of temperature and mass flow retained and exposed in the foregoing, makes it possible to significantly reduce the number of surface defects of the hair, on the scales of the latter.
- the hair because of this reduction in the number of defects, thus has a smoother surface, which reflects the light more homogeneously, in the manner of a specular reflection, which makes the hair appear shinier. Due to this reduction in defects, the hair also has fewer catching points, that is to say they are less likely to cling to each other and appear sensorially softer.
- the invention is particularly reflected in experimental work which can be summarized as follows.
- Figure 11 is a microscopic photograph of said healthy and washed hair, before degradation according to the aforementioned protocol.
- Figures 12 and 13 are microscopic photographs of the same hair after degradation according to the aforementioned protocol. THE negatives of FIGS. 11 to 13 were obtained using a digital microscope referenced VHX-2000 from the company Keyence France, 1 place Costes et Bellonte, 92270 Bois-Colombes (France).
- - class B semi-circular white areas, generally located mainly at the extremities of the scales, and corresponding to detachments or lifting of the scales;
- type 111 notches, parallel to the axis of the hair and due to cracking of the cuticle.
- Class A and B defects are the most common and the most visible.
- Class A defects were quantified for 7 series of 4 healthy, washed hair which had undergone artificial damage according to the protocol mentioned above.
- the data relating to healthy and washed hair (before damage ) are represented by squares, while damaged hair data is represented by triangles.
- the defect density xA is determined as follows:
- a photograph of the hair concerned is captured by a high-resolution digital microscope equipped with an optical zoom lens with a maximum magnification of 5000, for example the digital microscope referenced VHX-2000 from the aforementioned Keyence France company;
- the density of defects xA is estimated by processing the image thus obtained, by means of a computer program for detecting and quantifying defects.
- the image processing program in question makes it possible to calculate the density XA by determining the total number of pixels N of the image corresponding to class A defects (dark spots), relative to the total number of pixels Nz of the image in question, according to the following formula:
- N the total number of pixels belonging to class A defects and N z is the total number of pixels in the image.
- the density of class A defects has increased significantly after the hair has been artificially damaged as described above.
- the degraded hair corresponding to the snapshot of Figures 12 and 13 and to the graph of Figure 9 are then divided into two groups, namely a group No. 1 which is subjected to a first protocol of embellishment (protocol no. 1), and a group no. 2 which is subjected to a second embellishment protocol (protocol no. 2).
- These beautification protocols are as follows.
- Protocol No. 1 thermo-mechanical treatment without steam
- thermo-mechanical treatment is applied to the hair of group No. 1 by means of a device of the steam straightener type, the steam emission function of which has been deactivated.
- the treatment applied consists of three passages of the straightener over the stretched hair (for example by means of a mass of 400 g attached to one end of the hair while the other end is attached to a fixed frame), at a speed of 20 mm/s, over substantially the entire length of the samples.
- This three-pass treatment is repeated for different treatment temperatures, varying from 100°C to 200°C.
- Protocol No. 2 thermo-mechanical treatment with steam flow
- Treatment No. 2 consists in subjecting the hair of group No. 2 to a thermo-mechanical treatment with steam carried out by means of a steam straightener, the mass flow rate of steam of which is fixed at approximately 2 g/min.
- the treatment applied consists of three passages of the straightener over the taut hair (for example by means of a mass of 400 g attached to one end of the hair while the other end is attached to a fixed frame), to a speed of 20 mm/s, over substantially the entire length of the samples.
- This three-pass treatment is repeated for different treatment temperatures, varying from 100°C to 200°C.
- TA (XAv - XAp) / XAv
- XAV is the density of class A defects of the samples before the aforementioned thermomechanical treatment, calculated according to the method explained above, while XA P is the density of class A defects of these same samples after they have undergone the aforementioned thermo-mechanical treatment.
- the degraded locks according to the artificial degradation protocol described above were then subjected to a thermo-mechanical treatment with steam by means of an apparatus 1 in accordance with the invention, which in this case forms a brush such as than that illustrated in the figures.
- the treatment applied consisted of 15 or 30 passages of the brush at a speed of 20 mm/s over the entire length of the wick samples, which are stretched (for example by means of a 400 g mass attached to one end of the wick while the other end is attached to a fixed frame).
- the value of said first surface temperature of the heating element 4 amounts to 160° C., while the mass flow rate of steam is established at 0.8 g/min.
- a white parallel light beam is created by LEDs in a probe head and sent via a mirror onto the surface of the wick with an incidence at 60°;
- a first sensor evaluates the reflectance of light directly reflected at 60°
- a second sensor evaluates the diffuse reflectance of light at 90° (i.e. perpendicular to the surface of the wick).
- thermo-mechanical steam treatment with 15 brush strokes
- the thermo-mechanical steam treatment implemented with a combination of 160° C./0.8 g/min makes it possible to obtain an average gloss value not only higher than that of degraded hair, but also superior to that of hair washed before degradation, demonstrating a surprising, synergistic and marked effect of embellishment of the hair, thanks to the combined effect of heat and steam in the ranges of values retained by the invention.
- the average gloss value is substantially identical between the lock treated 15 times and the lock treated 30 times, which shows another advantage of the synergistic effect between heat and steam: it is not necessary to multiply the number of passes to improve the shine of the hair.
- the brush pins 7 which protrude from the front face 3A of the head 3 include at least:
- heating element 4 advantageously includes said heating pins 70, and is preferably formed by said heating pins 70, and
- - steam pins 71 each incorporating a steam ejection orifice 710 connected to a steam source (preferably steam), which is formed for example by the steaming device 5 and the supply device 6 associated described in the foregoing.
- a steam source preferably steam
- each vapor ejection orifice 710 is advantageously in fluid communication with the interior of the vaporization chamber 50 via the channeling device 52.
- the steam pins 71 thus assume, in in addition to their mechanical brushing function, a steam sprayer function, that is to say that each steam pin 71, with its steam ejection orifice 710, advantageously forms a steam projection nozzle (preferably water vapour).
- the fluidic treatment of the hair (supply of steam via the steam ejection orifice 710 of the steam pins 71) is advantageously combined with a mechanical treatment of the hair, under the effect a resistive force generated by the hair against the steam spikes 71.
- the term “combined” is understood here to mean a simultaneous performance of said fluidic and mechanical treatments on the same area of hair.
- a fluidic treatment and a mechanical treatment This makes it possible to obtain a "double" action combined and concentrated on the same area of hair. This makes it possible to increase the effectiveness of the treatment, and to obtain excellent results in terms of styling, embellishment and care of the hair, while minimizing the number of necessary passages of the hairdressing device 1 against the hair.
- the surface temperature of the heating pins 70 corresponds to the first surface temperature aforesaid, whose value in operational operating mode EN is at least equal to 110°C, while the steam flow (preferably steam) whose mass flow rate value is at least equal to 0.5 g /min escapes through the steam ejection orifices 710 of the steam pins 71.
- This embodiment is particularly advantageous because it makes it possible to apply a thermo-mechanical steam treatment to the hair in an optimal and particularly effective manner.
- the steam pins 71 also play the role of heating pins, in addition to their steam diffusion function.
- the steam pins 71 contribute in this advantageous embodiment to forming both the heating element 4 and the steam emission means.
- the fluidic treatment of the hair (supply of steam via the steam ejection orifice 710 of the steam pins 71 contributing to form the steam emission means) is, even more advantageously combined not only preferably with a mechanical treatment of the hair, under the effect of a resistive force generated by the hair against the steam pins 71 as mentioned above, but also with a heat treatment of the hair (supply of heat by the steam pins 71 contributing to form the heating element 4).
- a hairdressing appliance 1 comprising at least one heating element 4 intended to come into contact with the hair as well as steam emission means configured to subject to a flow steaming said hair in contact with said heating element 4, said hairdressing appliance 1 being characterized in that it is designed to be in an operational operating mode EN in which said heating element 4 has a first surface temperature whose value is at least equal to 110° C., while said vapor flow has a mass flow whose value is at least equal to 0.5 g/min, said vapor emission means and said heating element 4 being arranged so that a same zone of said hair is simultaneously in contact with said heating element and subjected to said flow of steam.
- EN operational operating mode
- said heating element 4 has a first surface temperature whose value is at least equal to 110° C.
- said vapor flow has a mass flow whose value is at least equal to 0.5 g/min
- said vapor emission means and said heating element 4 being arranged so that a same zone of said hair is simultaneously in contact with said heating element and subjected to said flow of
- the steam pins 71 are integral with the heating pins 70, that is to say that in this case the steam pins 71 and the heating pins 70 are advantageously formed by a single piece in one piece.
- the steam pins 70 and heating pins 71 are formed by a first one-piece piece 700 (shown in isolation in FIG. 7) which is made of metal, for example aluminum or cast aluminum, and which is advantageously obtained by molding and/or machining a metal primary block (preferably aluminum or cast aluminum).
- the heating pins 70, as well as the steam pins 71 are anodized, to enable them to retain a smooth surface even when their temperature is high.
- said first one-piece piece 700 of aluminum or cast aluminum which forms the heating pins 70, as well as advantageously the steam pins 71, is placed in contact with a second heating device 40, formed for example by resistive elements capable of heating by Joule effect, said resistive elements being in contact with said first one-piece part 700 (from which the heating pins 70 and preferably the steam pins 71 originate) to heat the latter at least by thermal conduction.
- the second heating device 40 can be formed, for example, by one or more resistive elements capable of heating by Joule effect (for example one or more heating elements, or thermistor(s), with a “Positive Temperature Coefficient” (PTC) ).
- PTC Pelcositive Temperature Coefficient
- the second heating device 40 of the heating element 4 is distinct from said first heating device 51 of the vaporization chamber 50.
- each of said heating pins 70 and/or said steam pins 71 has, in cross-section, a substantially oblong shape, as illustrated in the figures. Thanks to this oblong shape, which gives the heating pins 70 a substantially flattened shape, in the shape of a paw, the heat exchange with the hair is optimized since the wider than long shape of the heating pins 70 gives a maximum exchange surface during of the passage of the hair against the pimples.
- the steam pins 71 also preferably play the role of heating pins, so that in this case it is preferable that they too have in cross section a substantially oblong shape, preferably substantially similar to that of the pins heaters 70.
- each steam pin 71 preferably has, as shown in the figures, a substantially flattened shape with two opposite faces, separated by the thickness of the steam pin 71, said ejection orifice 710 of steam emerging on at least one of said two opposite faces, and preferably on said two faces, in which case the steam is projected on each side of the steam pin 71, which makes it possible to improve the diffusion of the steam within strands of hair.
- the steam ejection orifice 710 which opens onto at least one of the faces of the steam pin 71, that is to say substantially perpendicular to the axis of longitudinal extension of the steam pin 71 in question, the steam leaves the steam pin 71 with an incidence which is substantially parallel to the mean plane of the front face 3A, which not only makes it possible to reduce the risk of burning the scalp during use , but also ensures a particularly effective projection of water vapor since it makes it possible to treat the locks of hair on their height.
- each steam ejection orifice 710 is preferably provided over at least half , and preferably over at least two-thirds, of the height of the steam bar 71 which incorporates it.
- the head 3 of the hairdressing device 1, and in particular the front face 3A of said head 3 has a plane of symmetry, which is advantageously parallel to or merged with, at the central longitudinal axis X-X'.
- Such an advantageously symmetrical construction makes it possible to obtain a hairdressing appliance 1 which can be used in any direction on the hair, thus forming an advantageously ambidextrous appliance 1, usable both by a user of the right hand or of the left hand. , but also on the left side or on the right side of the user's head while advantageously maintaining an identical relative movement/treatment gesture: typically from the root to the tip of the hair.
- Such a symmetrical arrangement also contributes to simplifying the industrial manufacture of the hairdressing device 1 .
- the brushing pins 7, which include the heating pins 70 and preferably the steam pins 71 can be distributed on the front face 3A according to a distribution pattern which has a plane P of central symmetry passing through said steam pins. 71.
- the steam pins 71 are arranged substantially in the center of the front face 3A, which has various additional advantages.
- a first advantage lies in the safety of use: an emission of steam localized in the center of the front face 3A in fact makes it possible to limit the risk of burns.
- Another advantage lies in the fact that the water vapor can act more effectively on the hair because it can escape less easily than if it were emitted from the periphery of the head 3.
- said brushing pins 7 also include tensioning pins 72, shown separately in Figure 5, and which allow, in cooperation with the other brushing pins (including heating pins 70 and steam pins 71), to stretch the hair engaged by the head 3 in order to press them laterally on and against the heating pins 70 and/or the steam pins 71, thus allowing a better heat exchange as well as a better supply of steam to the locks of hair concerned.
- each of said tensor pins 72 has substantially a shape of revolution, with for example a substantially frustoconical main body which rises between a base and a top, the latter optionally being advantageously provided with an enlarged and rounded, substantially spheroidal head.
- said tensor pins 72 are formed by the same second one-piece piece 701, illustrated separately in Figure 5, for example in plastic material, and even more preferably in hard plastic, of the polyurethane or PPS (polyphenylene sulfide) type, advantageously polished, which has a particularly smooth surface while being resistant to high temperatures.
- PPS polyphenylene sulfide
- the choice of a plastic material also makes it possible to benefit from lower thermal conduction properties than that of a metal such as aluminum or cast aluminum, which advantageously forms the first one-piece part 700 from which the heating pins 70 come.
- tensioning pins 72 to also play the role of thermal insulation, in which case said tensioning pins 72 advantageously assume the function of insulating pins.
- said tensioning pins 72 are preferably higher than said steam pins 71 and/or are higher than said heating pins 70, so that they make it possible to keep the heating pins 70 and the steam pins 71 at a distance. of the scalp, when using the hairdressing device 1 , thus limiting the risk of burns.
- the latter have, in the operational operating mode EN, a second surface temperature (that is to say a surface temperature) whose value is advantageously lower than that of said first surface temperature.
- the value of said second surface temperature is compatible with contact with the scalp, ie it is low enough not to cause burning and/or any discomfort.
- the second one-piece part 701 from which the tensor pins 72 originate and the first one-piece part 700 from which the heating pins 70 originate are superimposed, with the second one-piece part 701 forming the tensor pins 72 arranged on and against the first one-piece part 700 forming the heating pins 70, the latter protruding through openings 701 A made through the second one-piece part 701.
- the tensioning pins 72 are advantageously distributed in a specific manner relative to the heating pins 70, of which the steam pins 71 preferably form part, in accordance with the embodiment illustrated in the figures.
- a first plurality 70A of said heating pins 70 is distributed on the front face 3A along at least one first primary row R1, which extends for example longitudinally along a first axis X1-X1' substantially parallel to the central longitudinal axis X-X'
- a first plurality 72A of said tensioning pins 72 is distributed on the front face 3A along at least one first secondary row R2, which is extends for example longitudinally along a second axis X2-X2' substantially parallel to the central axis X-X'.
- said first primary R1 and secondary R2 rows are preferably substantially parallel and offset longitudinally so that the heating pins 70 and tensioning pins 72 of said first primary R1 and secondary R2 rows are not aligned in a transverse direction Y-Y' substantially perpendicular to the central axis X-X'.
- the heating pins 70 and tensioning pins 72 are offset transversely.
- Said first primary R1 and secondary R2 rows are preferably adjacent, that is to say they extend side by side. Thanks to this longitudinal offset, the hair is stretched by the alternation of the tensioning pins 72 and the heating pins 70 which makes it possible to press the hair against the heating pins 70, thus increasing the exchange surface.
- the first primary R1 and secondary R2 rows are offset longitudinally so that the pins 70, 72 of said first primary R1 and secondary R2 rows are staggered.
- said first plurality 70A of said heating pins 70 is distributed on the front face 3A according to a plurality of primary rows R1, RT, R1”, RT” (including said first primary row R1)
- said first plurality 72A of said tensor pins 72 is distributed on the front face 3A according to a plurality of secondary rows R2, R2', R2", R2'" (including said first secondary row R2), said primary rows R1, RT , R1”, R1'” and secondaries R2, R2', R2”, R2'” being arranged alternately.
- a second plurality 72B of said tensioning pins 72 as well as a first plurality 71A of said steam pins 71 are aligned to form a mixed row R3 within which said tensioning pins 72 and said steam pins 71 are arranged alternately, that is to say that in the longitudinal direction materialized by the central axis X-X', each tensor pin 72 of the mixed row R3 is adjacent to at least one steam pin 71 of the mixed row R3 , while reciprocally each steam pin 71 of the mixed row R3 is adjacent to at least one tensor pin 72 of the mixed row R3.
- the mixed row R3 is central, that is to say it is aligned with the central longitudinal axis X-X'.
- the plane P of central symmetry preferentially intersects the mixed row R3 which is included at least in part in the plane P.
- said plurality of secondary rows R2, R2', R2", R2'" comprises, in addition to said first secondary row R2 which extends longitudinally along the second axis X2-X2' , a second secondary row R2', which extends for example along a third axis X3-X3', said first and second secondary rows R2, R2' being arranged on either side of said mixed row R3.
- said mixed rows R3, first secondary row R2 and second secondary row R2' are offset longitudinally so that their pins are not aligned in the transverse direction Y-Y', and are preferably staggered as shown, which allows the hair to be pressed against the steam pins 71 and thus optimize the transfer of heat and steam.
- said plurality of primary rows comprises, in addition to said first primary row R1, a second primary row R1' which is arranged symmetrically to said first primary row R1 with respect to said plane P of central symmetry and which extends longitudinally along a fourth axis X4-X4'.
- Said plurality of primary rows also preferably comprises a third primary row R1” which extends longitudinally along a fifth axis X5-X5' substantially parallel to said central longitudinal axis X-X'.
- said fifth axis X5-X5' is farther from said central longitudinal axis X-X' than is the first axis X1-X1'.
- Said plurality of primary rows also comprises a fourth primary row R1′” which is arranged symmetrically to said third primary row R1′′ with respect to said plane P of central symmetry, and which extends longitudinally along a sixth axis X6-X6 '.
- said plurality of secondary rows also comprises a third secondary row R2”, which extends for example along a seventh axis X7-X7′ advantageously interposed between said first axis X1-X1′ and fifth axis X5 -X5'.
- said plurality of secondary rows also comprises a fourth secondary row R2'”, which extends for example along an eighth axis X8-X8' advantageously interposed between said fourth axis X4-X4' and sixth axis X6-X6'.
- the primary and secondary rows are alternated, and are also preferably offset longitudinally two by two, which allows excellent heat exchange and efficient penetration of the flow of steam within the locks of hair engaged by the head 3.
- the invention allows, by combining parameter values (surface temperature of the heating element 4 and mass flow rate of the steam flow) specifically selected, as well as preferably a specific distribution of pins assuming different functions, to obtain quite remarkable results in terms of hair embellishment.
- the invention finds its industrial application in the design and manufacture of hairdressing appliances, for example for domestic use, intended to provide shaping, embellishment and/or improvement of the health of the hair, and more specifically electric portable hairdressing appliances such as hairdressing brushes, detangling brushes, smoothing brushes or hair straighteners.
Landscapes
- Cleaning And Drying Hair (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22851026.9A EP4456762A1 (fr) | 2021-12-30 | 2022-12-22 | Appareil de coiffure chauffant a vapeur |
KR1020247025141A KR20240126054A (ko) | 2021-12-30 | 2022-12-22 | 가열식 증기 기반 헤어 스타일링 기기 |
CN202280086711.8A CN118475269A (zh) | 2021-12-30 | 2022-12-22 | 加热蒸汽美发器具 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2114657A FR3131513B1 (fr) | 2021-12-30 | 2021-12-30 | Appareil de coiffure chauffant a vapeur |
FR2114657 | 2021-12-30 |
Publications (1)
Publication Number | Publication Date |
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WO2023126603A1 true WO2023126603A1 (fr) | 2023-07-06 |
Family
ID=81327473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2022/052490 WO2023126603A1 (fr) | 2021-12-30 | 2022-12-22 | Appareil de coiffure chauffant a vapeur |
Country Status (5)
Country | Link |
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EP (1) | EP4456762A1 (fr) |
KR (1) | KR20240126054A (fr) |
CN (1) | CN118475269A (fr) |
FR (1) | FR3131513B1 (fr) |
WO (1) | WO2023126603A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2921804A1 (fr) * | 2007-10-03 | 2009-04-10 | Seb Sa | Appareil portatif de traitement des cheveux a la vapeur |
FR2967017A1 (fr) * | 2010-11-05 | 2012-05-11 | Seb Sa | Appareil de coiffure a vapeur |
-
2021
- 2021-12-30 FR FR2114657A patent/FR3131513B1/fr active Active
-
2022
- 2022-12-22 EP EP22851026.9A patent/EP4456762A1/fr active Pending
- 2022-12-22 CN CN202280086711.8A patent/CN118475269A/zh active Pending
- 2022-12-22 WO PCT/FR2022/052490 patent/WO2023126603A1/fr active Application Filing
- 2022-12-22 KR KR1020247025141A patent/KR20240126054A/ko unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2921804A1 (fr) * | 2007-10-03 | 2009-04-10 | Seb Sa | Appareil portatif de traitement des cheveux a la vapeur |
FR2967017A1 (fr) * | 2010-11-05 | 2012-05-11 | Seb Sa | Appareil de coiffure a vapeur |
Non-Patent Citations (1)
Title |
---|
M. GAMEZ-GARCIA: "The cracking of human hair cuticules by cyclical thermal stresses", JOURNAL OF THE SOCIETY OF COSMESTIC CHEMISTS, vol. 153, 1998, pages 141 - 153 |
Also Published As
Publication number | Publication date |
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FR3131513A1 (fr) | 2023-07-07 |
KR20240126054A (ko) | 2024-08-20 |
EP4456762A1 (fr) | 2024-11-06 |
CN118475269A (zh) | 2024-08-09 |
FR3131513B1 (fr) | 2024-01-12 |
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