Classifications

• • 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
  • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
  • A45D26/0014—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers using wax

Definitions

• the present invention relates to a depilatory strip, in particular in the form of a depilatory wax composition deposited on a support. It also relates to a method of using this band for hair removal and a hair removal device specially designed for the implementation of the band according to the method according to the invention.
• the depilatory wax compositions are generally applied hot in the molten form to the skin and, once in the hardened form after cooling, they are plucked with the hairs which they have trapped.
• the mass of composition to be depilated must therefore be heated to bring it to the molten state, the melting times of the wax masses being quite long, given their poor thermal conductivity.
• the application of melted depilatory wax to the skin with poor control of the thickness of the applied layer may cause burning or heat discomfort for some users.
• depilatory compositions of the "cold wax” type which are in the form of pastes with adhesive properties deposited on a flexible support in the form of a sheet or film of polyethylene, textile fabric, cellophane or other matter. These compositions are used at room temperature.
• Such supports provided with layers of depilatory paste, ready for use, are known from the documents: US 2,377,774, US 2,425,696, US 2,954,324 and FR 1,287,305.
• These depilatory strips have numerous drawbacks. First, they require specific storage conditions, their adhesive properties varying with temperature. Then, they may not satisfactorily trap the hairs, part of the latter then not being torn off with the strip.
• composition can adhere strongly to the skin, making it difficult to remove at the end of the operation.
• Document US 1,620,539 describes a flexible support in the form of a strip covered on both sides with a depilatory wax. The band is applied to the skin after having been immersed in hot water or in a bath of solvent which softens the layer of wax. This method proves to be impractical and time consuming to implement.
• Such devices include a housing, a heating slot provided in the housing for supporting the sheet coated with wax, as well as heating means adjacent to said slot and heating the wax by thermal convection.
• These devices have the following drawbacks: they take a long time to heat up; they use sheets coated with wax of predetermined dimensions; in addition, the heated wax layer is never at the right temperature, because heating is done far from the place of use, it can be already cooled once it comes into contact with the skin.
• Another type of device intended for heating strips coated with depilatory wax is known from document LU-85026.
• This device comprises a device for unwinding and rewinding a roll of fabric impregnated with depilatory wax.
• the unrolled strip of a first drum, brought into contact with the skin, is liquefied by contact with a heating element. It is then solidified, by a cooling element, before being wound up, with the hairs pulled out, on a second drum.
• This device has the disadvantage of heating the skin only locally, on a small portion of strip of wax.
• the heating is done by contact of the wax strip with a heating armature of the device, which requires a significant heating time and makes the hair removal process quite laborious.
• Document FR 2 747 278 in the name of the applicant describes an apparatus for human hair removal comprising means for applying to the skin of the user a strip pre-coated with depilatory wax, means for heating the part of the ribbon in contact with the skin, as well as means for tearing off the strip of wax previously deposited on the skin.
• the object of the invention is to remedy the aforementioned drawbacks and to provide the user with a very short implementation time, rapid, easy and efficient use, in complete safety.
• Another object of the invention is to provide a depilatory strip which, associated with a device, simplifies the implementation of the hair removal process for the human person using it.
• a further object of the invention is to propose an apparatus for implementing the compact construction method, easy to handle, making it possible to easily apply strips of wax of uniform thickness to the skin, adapting to the configuration of the area to be epilated, even in places that are not easily accessible.
• a depilatory strip comprising a support coated with a depilatory wax composition intended to be applied in the molten state to the skin, because said support is made of an electrically resistive material capable of being put in place. contact in at least two areas with a source of electric current.
• a support made of an electrically resistive material is meant any support made of material comprising at least one electrically conductive part which gives off heat by the Joule effect when it is crossed by an electric current.
• a depilatory wax composition deposited on a support which instantly heats up over its entire surface while being traversed by an electric current, is softened very quickly and uniformly on its surface common to that of said support.
• the two electrical current contact areas are located at opposite ends of predetermined portions of the tape support.
• the support coated with depilatory wax is flexible.
• the electrical power applied to the support coated with depilatory wax for heating is less than 30 W, in particular for strips of indicative dimensions of 30 mm ⁇ 300 mm.
• an electric power limited to this value ensures rapid and efficient heating, while conferring absolute safety against burns due to possible overheating.
• the depilatory band support consists of a metallized plastic film.
• This embodiment makes it possible to have a heating element with low thermal inertia, very economical, easy to store, in particular in the form of a roll, and also easy to cut to the desired size of the strip.
• the depilatory wax has good adhesion properties on such a support.
• the support is coated with a depilatory wax composition deposited in a layer of thickness less than 2 mm.
• the depilatory strip support is coated with a depilatory wax composition constituted by a wax of vegetable or animal origin.
• This wax offers good conditions of temperature resistance, especially during storage, and good adhesion to the support.
• the depilatory strip support is coated with a depilatory wax composition constituted by a sugar-based wax.
• This wax adheres very well to the support and allows it to be deposited in very thin layers on the latter.
• the depilatory wax contains thermochromic dyes in its composition.
• the depilatory wax deposited on the support changes color between ambient temperature and the temperature of use, to warn that the temperature of use has been reached. This gives even more safety in use.
• a depilatory device specially designed for the implementation of the depilatory band and comprising a housing forming manual gripping means, means for receiving a depilatory band inside. of the housing, as well as means for applying said depilatory strip to an area of the wearer's skin.
• the depilatory strip consists of a depilatory wax composition deposited on an electrically resistive support, the support being supplied with current via electrical contacts provided in the housing of the device.
• the epilating appliance uses a depilatory strip stored in the form of a roller inside the housing, the appliance comprising means for holding a portion of strip pressed against electrical contacts in view. heating, as well as means for cutting a portion of strip to a predetermined size for application to the skin.
• Such a device gives the advantage of continuous use of such a depilatory strip, all along a depilation session, the strip being heated on portions which are preferably cut later so that they can be applied to the skin. This is due to the easy and easy application of this strip to the skin, while using a device of simplified and compact construction.
• the means for cutting the strip consist of a rocker comprising a hot wire. This makes it possible to trigger the cutting of the strip by simple pivoting of the rocker which brings its hot cutting wire into contact with the depilatory strip.
• the use of a hot wire gives the advantage of having an efficient cutting device while remaining discreet and easily integrated into a compact construction device.
• the means for cutting the strip consist of a cutting device with a cutting blade.
• Such a device is a very simple construction and a reduced manufacturing cost.
• the epilating appliance comprises means for retaining the depilatory strip mounted to move relative to the housing of the appliance between at least two positions: a first for retaining the strip, pressed against electrical contacts, and a second tape release.
• the epilating device comprises means for controlling and adjusting the current transmitted to the strip via the electrical contacts.
• the present invention also relates to a hair removal method using a depilatory strip based on depilatory wax intended to be deposited in the molten state on the skin, characterized in that it consists in the use of a strip consisting of a support of an electrically resistive material coated with a depilatory wax, to apply to said support first a current of high intensity in order to bring the wax to the molten state, to subsequently supply the support with a current of less intensity corresponding to maintaining the temperature of the depilatory strip, to apply the depilatory strip thus heated on the skin of the user and to tear off the strip once the wax has solidified.
• FIG. 1 is a sectional view of a depilatory strip according to the present invention.
• FIG. 2 is an exploded perspective view of the parts making up an apparatus according to a first variant of the first embodiment of the invention
• FIGS. 3a, 3b illustrate perspective views of a hair removal device according to a first variant of the first embodiment, the means for holding the strip being in the closed position;
• FIG. 4a, 4b illustrate perspective views of a hair removal device according to a first variant of the first embodiment, the means for holding the strip being in the open position;
• FIGS 5a, 5b illustrate perspective views of a cutting device according to a second variant of the first embodiment of the device;
• FIG. 6 shows a perspective view of a hair removal device according to a second embodiment of the invention.
• FIG. 7 is a perspective view of a hair removal device according to a third embodiment of the invention.
• FIG. 1 illustrates a depilatory strip according to the invention, the strip 1 consisting of a support 3 made of electrically resistive material on which is deposited a depilatory wax composition 2.
• the two opposite ends 4 of the longitudinal dimension of the strip 1, ends called the current supply, are brought into contact with a source of electric current.
• the support of the strip, crossed by an electric current, is heated by the Joule effect and it heats the composition of depilatory wax 2.
• a depilatory strip thus heated is subsequently deposited on the skin of the user. Once the wax has solidified, the strip is removed, pulling out the hairs it traps.
• the support 3 can be in the form of a strip, therefore a piece of resistive material longer than wide.
• a support of a fairly significant length on which the portions of strip to be heated follow one another, one behind the other.
• the band support can have any geometric shape suitable for the purpose of its use, in particular which conforms to the area to be depilated.
• the current supply zones are preferably located in the two opposite ends of the largest dimension of the support. Other variants are also possible, with a supply in any two points of the support 3, the heating of the strip being able to be done by Joule effect on a part of the strip crossed by the current, and by thermal conduction on the adjacent parts.
• the conductive support used is preferably made of a flexible or flexible material in order to better match the shape of the surface on which it is deposited.
• the conductive support can be produced for example from a metallized film, in particular charged with electrically conductive material.
• a metallized film is for example made of PET with a thickness of 0.01 to 1 mm on which is deposited an aluminum layer with a thickness of 0.00004 mm (i.e. 0.04 ⁇ m) at 0.2 mm adhering to it. movie.
• aluminum is deposited on the plastic film in the form of an electric heating circuit.
• depilatory strip in particular metallized fabrics, conductive plastic materials, or any other electrically conductive material.
• a layer of depilatory wax composition 2 is deposited in the molten state on a support of the type described by any known means, in particular by application with a roller, by spraying, by immersion of the support in a wax bath, etc.
• the depilatory wax layer is preferably deposited in a uniform manner, and having a thickness of less than 2 mm so as not to cause burns during its application on the skin of the user while ensuring good coating efficiency. hairs to be plucked.
• the average size of a band to be used for hair removal from the legs is 30mm x 200mm.
• the length of the wax layer 2 is preferably less than that of the support 3, the support having on either side of the wax layer two zones 4 for supplying current .
• the wax layer could have the same length as the support, in which case the power supply would be on the opposite side to that covered by the wax 2.
• the width of the wax layer 2 deposited on the resistive support 3 can be equal to or less than that of support 3.
• a metallized film is used as a support for the depilatory wax composition
• the latter will be deposited, preferably on the metallized part in order to have better heat transfer between the heating support 3 and the wax layer.
• the support 3 could also be coated with depilatory wax on the plastic side, therefore that opposite the metallized one to ensure better grip.
• the wax is deposited on the plastic side of the metallized film.
• the depilatory strip 1 is preferably made from a wax having a fairly low softening temperature in order to have the shortest possible softening time.
• a wax having a fairly low softening temperature in order to have the shortest possible softening time.
• any depilatory wax composition applied in the molten state to the skin can be considered.
• the depilatory wax composition used can be a vegetable or animal wax, in particular Carnauba wax, rosin, beeswax or that of Candellila.
• the depilatory wax composition can also be a sugar-based wax.
• Additives can be incorporated into the depilatory wax to improve its functional properties: plasticizers, emulsifiers, surfactants. Other products with anti-irritation, anti-redness, antiseptic and softening properties can also be incorporated into the composition.
• thermochromic dyes could be incorporated into the depilatory wax composition. The user could thus follow the evolution of the color with the temperature and apply the strip when the wax it contains has just reached its melting temperature.
• FIG. 2 illustrates a first embodiment of a depilatory device using a depilatory strip 1 of the type described, therefore using an electrically resistive support pre-coated with depilatory wax.
• the epilating appliance 5 is constructed from a central part forming a body or housing 8 of the appliance.
• the interior of the body 8 is used to store the depilatory band 1, as well as various other components of the device which will be presented later.
• the exterior of the device has two covers: lower 11 and upper 12 which have the same external shape as the body 8 and close on the latter revealing an application area 9 of the depilatory strip 1.
• the two covers 1 1 and 12 are mounted removable, using screws 48, on the body 8 of the device and form a closed casing constituting manual gripping means of the device 5.
• the depilatory strip 1 is packaged in the form of a roller 6 and it is stored in a housing 7 provided for this purpose inside the housing 8.
• the depilatory strip is unwound over a portion, called the application portion, and it rests on the application area 9 of the device.
• the upper cover 12 may have a removable cover 13 facilitating the user's access to the housing 7 of the roller 6 for the purpose of replacing the latter once it has been completely used.
• the application zone or applicator sole 9 is preferably perpendicular to a longitudinal median plane and which is parallel to the covers 11, 12 of the device. This application area is also slightly convex towards the outside. This allows the wax strip to be easily deposited on the wearer's skin.
• the application zone 9 has a ridged surface ensuring good adhesion of the depilatory band 1 on this zone and limiting the heat losses towards this zone 9 which are to the detriment of the heating of the wax.
• the body 8 of the device 5, as well as the covers 11, 12 and the cover 13 can advantageously be made of a plastic material by any known molding technique.
• the epilating appliance 5 is provided with a cable for connection to an electrical outlet which supplies, via a voltage transformer, the current supply to the appliance.
• the electrical current received is supplied to an electronic card 38 which controls and regulates the operation of the device.
• the outputs of the electronic card 38 are connected to the two contacts 26, 28. Map 38, as well that the contacts 26, 28 are located inside the housing 8.
• the electrical contacts 26, 28 are placed in the two longitudinal ends of the applicator sole 9, tangentially to the exterior surface of the latter.
• the depilatory strip 1 which normally rests on the applicator sole 9 is supposed to come into contact, through its zones 4 for supplying current, with the electrical contacts 26, 28 of the device for its current supply.
• the ends 4 of the strip 1 are preferably kept pressed against the electrical contacts 26, 28 of the device.
• holding means are used in the form of two pressure rollers: front 14 and rear 16.
• FIG. 3a shows the apparatus with the two rollers 14, 16 in closed position when the ends 4 of the strip 1 are kept pressed against the surface of the contacts 26, 28 of the device.
• Position 4a shows the same device with the rollers 14, 16 in the open position.
• the cutting means are represented by a lever 30 pivotally fixed in the body 8 of the device.
• the cutting lever 30 is constituted by two parallel L-shaped rocker arms 32, fixed in their middle on a pivot axis 34. Two ends facing the rocker arms 32 are connected together by a wire conductor 36 supplied with current by the electronic card 38.
• the axis 34 is fixed in the body 8 of the device so that the wire 36 extends transversely relative to the width of the sole applicator 9, the wire 36 being placed between the sole 9 and the depilatory band 1.
• the wire 36 is placed below the band 1, while the opposite ends of the rocker arms 32 protrude relative to the band, as as visible in Figures 3a, 3b.
• the heating power applied to the strip support 1 is modulated in two stages: a first, called rapid heating, when a high power is passed to liquefy the wax as quickly as possible, and a second, called holding, when the applied electrical power is lower, the strip can be applied to the skin.
• the heating cycle, as well as the values of the intensity of the current applied, are controlled by the electronic circuit 38.
• the specific electrical power corresponding to rapid heating is approximately 20W, the heating time being approximately 10s, the operation being carried out, for example, at a value of the voltage of 6.5 V and of the current intensity of approximately 3A.
• the specific power applied during the temperature maintenance phase is approximately 10 W, and it corresponds to the heat losses in the wax strip.
• the device with the depilatory strip 1 thus heated is ready to apply the strip to the skin.
• the user places the front part or adjacent to the pressure roller 14, in contact with the skin and she presses the sole 9 on the skin to bring the strip 1 over its entire length successively into contact with the skin.
• the applicator sole 9 has a shape in an arc of a circle favoring a successive application of the strip on a curved surface.
• the pressure is exerted as the application, allowing to follow the configuration of the area to be epilated.
• the wire conductor 36 is supplied with current and functions as a hot wire cutting the strip 1.
• the strip 1 once applied to the skin, begins to solidify and adheres to the skin, its ends 4 sliding easily under the pressure rollers 14, 16.
• the solidified strip is subsequently torn off with the hairs which it has trapped.
• the cutting means 40 comprise a cutting blade 42.
• the blade 42 is inserted in a support 44 pivotally mounted in a cradle 46 about an axis 45.
• the cradle 46 is fixedly mounted on the body 8 of the device.
• the strip 1 is cut at the end of application, by a simple pressure exerted on the support 44 in the continuity of the movement for removing the strip.
• FIG. 6 represents an apparatus according to a second embodiment of the invention.
• This device allows the application to the skin of two strips 1 ′, 1 "of different widths.
• the structure and operation of this device are close to that previously described.
• the differences consist essentially in the use of two rolls of depilatory strip 1 ', respectively 1 ", the apparatus being provided with two pairs of contacts 26", 28 “, respectively 26", 28 “.
• the device can successively apply strips of different widths to the skin.
• FIG. 7 illustrates a hair removal device 5 according to a third embodiment.
• the device 5 comprises a housing 8 inside which is housed the depilatory strip in the form of a folded sheet 62.
• the different portions of strip 1 intended to be applied to the skin are arranged in parallel, side by side in the direction of the width of the sheet 62.
• the apparatus 5 comprises a tape drive roller 52 which rotates about its axis 54 and brings a portion of tape 1 between two jaws for supplying current 56, 58.
• the jaws 56, 58 are mounted on springs, not shown, and allow the strip 1 to pass, while maintaining contact on its current supply ends 4.
• the user In operation, when the strip is in place, well positioned relative to the jaws 56, 58, the user actuates a hot wire which cuts it over its entire length along the line C-C. The heating is triggered thereafter, according to the same heating cycle as previously described. Once the wax is heated, the user applies the device to the area of hair to be depilated, the strip being deposited with the roller 60 which descends and runs along the slide 61 over the entire length of the strip 1. The strip of wax once solidified, it can be removed by keeping the roller pressed on the latter and pulling on the housing 8 of the device.
• an apparatus operating with a depilatory strip deposited on a resistive support can be envisaged without departing from the scope of the invention.
• an apparatus of the type described in document LU-85026 could be used with a depilatory band according to the invention.
• the device should be supplemented with electrical contacts and an electronic card to supply the resistive support of the strip. These contacts could be mounted in the device housing on return springs and send current into the strip by simple pressure exerted on the device housing.
• the device is dispensed with cutting means, the strip once applied to the skin and solidified is torn off by a used tape winding drum and stored in the case of the device.

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• Cosmetics (AREA)
• Thermotherapy And Cooling Therapy Devices (AREA)

Applications Claiming Priority (3)

Publications (1)

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Family Applications (1)

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• 1999
  • 1999-05-27 FR FR9906903A patent/FR2794007B1/fr not_active Expired - Fee Related
• 2000
  • 2000-05-24 TR TR2001/03394T patent/TR200103394T2/xx unknown
  • 2000-05-24 WO PCT/FR2000/001412 patent/WO2000072721A1/fr not_active Application Discontinuation
  • 2000-05-24 AU AU49308/00A patent/AU4930800A/en not_active Abandoned
  • 2000-05-24 EP EP00931342A patent/EP1180950A1/de not_active Withdrawn
  • 2000-05-24 RU RU2001135862/12A patent/RU2001135862A/ru not_active Application Discontinuation

Non-Patent Citations (1)

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