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EP3869994A1 - Coiffure utilisant un chauffage diélectrique - Google Patents

Coiffure utilisant un chauffage diélectrique

Info

Publication number
EP3869994A1
EP3869994A1 EP19783566.3A EP19783566A EP3869994A1 EP 3869994 A1 EP3869994 A1 EP 3869994A1 EP 19783566 A EP19783566 A EP 19783566A EP 3869994 A1 EP3869994 A1 EP 3869994A1
Authority
EP
European Patent Office
Prior art keywords
hair
mhz
radio
temperature
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19783566.3A
Other languages
German (de)
English (en)
Other versions
EP3869994B1 (fr
Inventor
Yannyk Parulian Julian Bourquin
Babu Varghese
Marco Baragona
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to PL19783566T priority Critical patent/PL3869994T3/pl
Publication of EP3869994A1 publication Critical patent/EP3869994A1/fr
Application granted granted Critical
Publication of EP3869994B1 publication Critical patent/EP3869994B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
    • A45D1/04—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
    • 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
    • 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
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/06—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with two or more jaws
    • 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
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/28—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
    • 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
    • A45D6/00—Details of, or accessories for, hair-curling or hair-waving devices
    • A45D6/20—Devices for controlling the temperature of hair curlers
    • 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
    • A45D19/00—Devices for washing the hair or the scalp; Similar devices for colouring the hair
    • A45D19/16—Surface treatment of hair by steam, oil, or the like
    • 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
    • A45D20/00—Hair drying devices; Accessories therefor
    • 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
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D2001/002—Accessories therefor
    • 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
    • A45D2200/20—Additional enhancing means
    • 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
    • A45D2200/20—Additional enhancing means
    • A45D2200/205—Radiation, e.g. UV, infrared
    • 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
    • A45D7/00—Processes of waving, straightening or curling hair
    • 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
    • A45D7/00—Processes of waving, straightening or curling hair
    • A45D7/02—Processes of waving, straightening or curling hair thermal

Definitions

  • the invention relates to a hair styling device using dielectric heating.
  • US 2017/0360174 discloses an apparatus that manipulates the shape of hair using dielectric heating.
  • the apparatus includes opposing first and second electrodes respectively provided on first and second arms that are movable towards and away from one another.
  • Drive circuitry supplies electrical energy to the first and second electrodes, to cause an alternating electric field to be produced in the vicinity of the electrodes in use, and thereby cause dielectric heating of hair placed between the electrodes in use.
  • Sensing circuitry senses a change in coupling of energy from the alternating electric field to the hair during heating of the hair.
  • Control circuitry controls the drive circuitry to vary the electrical energy supplied to the first and second electrodes in dependence upon the sensed change in coupling.
  • the range of frequencies is preferably from around 1 MHz to around 100 MHz. More preferably the range of frequencies is from around 10 MHz to around 100 MHz. Even more preferably the range of frequencies is from around 20 MHz to around 40 MHz, these frequencies being well suited for consumer products since they have limited wave propagation (unlike microwaves) and hence do not present a risk to health or undesirable EMC
  • a voltage of around 50 V AC is used.
  • Embodiments of the invention are based on the recognition that in the frequency range of below 40 MHz, as preferred by the prior art US 2017/0360174, the loss tangent and heat generation significantly depend on the moisture content. So, with frequencies below 40 MHz, as preferred by the prior art, the power levels need to be adapted depending on the water content of the hair. Moreover, since the water content changes significantly during the styling process, heat control requires real-time accurate monitoring of water content to provide optimal heating effects, to prevent undesirable over-heating effects and poor efficacy due to under-treatment from occurring. In that sense, it is desirable to have a method that is less dependent on the water content and which requires less critical sensing and control of treatment parameters.
  • this can be achieved by using frequencies in the range from 50 MHz to 90 MHz which will make the treatment less dependent on water content and at the same provides about the same efficacy as around 1 MHz for dry hairs.
  • a voltage of the radio-frequent signal does not exceed 30 V, while a voltage not exceeding 10 V would work well in a configuration that applies another heat source for heating hair up till a first temperature that is no more than 150 °C (and thus lower than a critical temperature at which hair cuticle damage will occur), and radio-frequent electrodes for - in combination with heat from the other heat source - selectively heating a hair cortex to a second temperature exceeding the first temperature and sufficiently high for hair styling.
  • Fig. 1 shows a graph of loss tangent vs. frequency
  • Fig. 2 shows an embodiment of a hair styling device in accordance with the present invention.
  • Fig. 1 shows a graph of loss tangent vs. frequency, for wet hair W and dry hair D, respectively.
  • the graph shows a relatively large difference in loss tangent between wet hair W and dry hair W for frequencies below 40 MHz, while the difference is much smaller for higher frequencies above 50 MHz, so that at such higher frequencies, it is not necessary to accurately and constantly measure the moisture content of the hair while styling it. While the graph shows that the same advantage also occurs at frequencies higher than 90 MHz, an efficacy of the RF heating is less at frequencies exceeding 90 MHz.
  • Fig. 2 shows an embodiment of a hair styling device 100 in accordance with the present invention, similar to our previous application WO 2017/080957 (attorneys’ docket 2015PF01581), with the difference that in the embodiment of Fig. 2, radio-frequency (RF) heating is used instead of light.
  • the hair styling device 100 comprises two jaws 101 which are hinged to pinch strands of hairs.
  • Each jaw 101 comprises an array of RF electrodes or large area electrodes 102, which will selectively heat the hair cortex to a temperature of about 170 °C required for styling. This temperature can be controlled to prevent other non-desirable heating effects such as melting and vaporization expected at 250 °C and 1200 °C respectively.
  • Each jaw 101 comprises optionally another heat source 103 which may directly or indirectly pre-heat the hairs to a first temperature of no more than 150°, preferably no more than 140 °C, e.g. 120 °C, to enhance the dielectric properties of the hair.
  • the combined heating effect from the other heat source 103 and the RF electrodes 102 will lead to the temperature of about 170 °C required for styling.
  • Additional hair conductivity sensing controls 104 can be used to measure hair dielectric properties and optimize the treatment by adjusting the power.
  • Additional heat control systems 105 can be used to regulate the temperature settings and treatment time. To straighten/style the hairs, the strands of hairs are inserted between the plates and are moved until the hair is styled.
  • a voltage below 10 V is suitable for use with high frequencies in the range between 50 MHz and 90 MHz in the embodiment of Fig. 2.

Landscapes

  • Cleaning And Drying Hair (AREA)
  • Cosmetics (AREA)

Abstract

Dans un dispositif de coiffure (100) comprenant des électrodes (102) servant à appliquer un signal de radiofréquence aux cheveux, une fréquence du signal de radiofréquence est comprise entre 50 MHz et 90 MHz. De préférence, une tension du signal de radiofréquence ne dépasse pas 30 V, tandis qu'une tension ne dépassant par 10 V fonctionnerait bien dans une configuration qui applique une autre source de chaleur (103) pour chauffer les cheveux jusqu'à une première température inférieure ou égale à 150 °C (et donc inférieure à une température critique susceptible d'endommager les cuticules capillaires), et les électrodes (102) de radiofréquence, en association avec la chaleur provenant de l'autre source de chaleur (103), pour chauffer sélectivement un cortex capillaire jusqu'à une seconde température supérieure à la première température et suffisamment élevée pour la coiffure.
EP19783566.3A 2018-10-25 2019-10-15 Coiffage utilisant un chauffage diélectrique Active EP3869994B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19783566T PL3869994T3 (pl) 2018-10-25 2019-10-15 Stylizowanie włosów z wykorzystaniem nagrzewania dielektrycznego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18202589.0A EP3643196A1 (fr) 2018-10-25 2018-10-25 Coiffage utilisant un chauffage diélectrique
PCT/EP2019/077840 WO2020083698A1 (fr) 2018-10-25 2019-10-15 Coiffure utilisant un chauffage diélectrique

Publications (2)

Publication Number Publication Date
EP3869994A1 true EP3869994A1 (fr) 2021-09-01
EP3869994B1 EP3869994B1 (fr) 2022-03-09

Family

ID=63998599

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18202589.0A Withdrawn EP3643196A1 (fr) 2018-10-25 2018-10-25 Coiffage utilisant un chauffage diélectrique
EP19783566.3A Active EP3869994B1 (fr) 2018-10-25 2019-10-15 Coiffage utilisant un chauffage diélectrique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18202589.0A Withdrawn EP3643196A1 (fr) 2018-10-25 2018-10-25 Coiffage utilisant un chauffage diélectrique

Country Status (8)

Country Link
US (1) US20210393012A1 (fr)
EP (2) EP3643196A1 (fr)
JP (1) JP7066059B6 (fr)
KR (1) KR102660110B1 (fr)
CN (1) CN112911963B (fr)
BR (1) BR112021007519A2 (fr)
PL (1) PL3869994T3 (fr)
WO (1) WO2020083698A1 (fr)

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760148A (en) * 1971-12-20 1973-09-18 Oreal Apparatus for treating hair utilizing dielectric losses
JPS5628526B2 (fr) * 1972-03-29 1981-07-02
AR204636A1 (es) * 1973-09-17 1976-02-20 Koppelman Edward Procedimiento y un aparato para secar madera
LU70345A1 (fr) * 1974-06-18 1976-05-31
US5325600A (en) * 1992-04-06 1994-07-05 Micro Dry, Inc. Method and apparatus for the prevention of scorching of fabric subjected to microwave heating
CA2199554C (fr) * 1996-03-12 2006-03-14 Loren R. Ouellette Analyzeur de l'etat de la peau avec capacite de parole
JP3101578B2 (ja) * 1997-01-31 2000-10-23 三洋電機株式会社 自動洗髪機
DE202004003592U1 (de) * 2004-03-09 2005-07-14 Wik Far East Ltd. Elektrisches Haarformgerät
US7586066B2 (en) * 2004-11-22 2009-09-08 Chris Baldwin Bell Hair styling device and method
KR200408910Y1 (ko) * 2005-12-07 2006-02-14 홍진표 무선 헤어 스타일러
CA2655176C (fr) * 2006-06-30 2012-05-22 The Procter & Gamble Company Dispositif de mesure de l'humidite d'un substrat et de l'hygiene des cheveux
CN200973180Y (zh) * 2006-11-09 2007-11-07 吴胜红 电烫发夹的厚膜加热器改良结构
FR2959917B1 (fr) * 2010-05-11 2012-07-27 Oreal Procede de traitement des cheveux
KR101194426B1 (ko) * 2010-08-19 2012-10-24 (주)언일전자 비타민씨를 함유한 인덕션 가열형 헤어롤
KR101247179B1 (ko) * 2010-08-19 2013-03-25 (주)언일전자 인덕션 히팅 방식의 헤어롤
US9138038B2 (en) * 2011-05-20 2015-09-22 Spectrum Brands, Inc. Hair styling apparatus having hair-protection function
GB2500733B (en) * 2012-06-25 2014-05-21 Jemella Ltd Hair styling appliance
CN202890918U (zh) * 2012-11-19 2013-04-24 温州市中芝贸易有限公司 干湿自动检测直发器
GB2533602B (en) * 2014-12-23 2020-11-11 Jemella Ltd Method and apparatus for manipulating the shape of hair
KR20170050905A (ko) * 2015-11-02 2017-05-11 경남정보대학교 산학협력단 휴대가능한 발열 헤어롤
ES2721253T3 (es) 2015-11-10 2019-07-30 Koninklijke Philips Nv Dispositivo para el cuidado del cabello
WO2017089152A1 (fr) * 2015-11-25 2017-06-01 Koninklijke Philips N.V. Dispositif de coiffure
CN105342111A (zh) * 2015-12-03 2016-02-24 矽照光电（厦门）有限公司 一种新型梳子
EP3207817A1 (fr) * 2016-02-17 2017-08-23 Koninklijke Philips N.V. Séchage et coiffure des cheveux par ultrasons
GB2569647B (en) * 2017-12-22 2023-07-19 Jemella Ltd Method of dyeing hair fibres and kits and appliances for use in the same

Also Published As

Publication number Publication date
BR112021007519A2 (pt) 2021-07-27
KR102660110B1 (ko) 2024-04-24
JP2021529077A (ja) 2021-10-28
EP3643196A1 (fr) 2020-04-29
EP3869994B1 (fr) 2022-03-09
JP7066059B6 (ja) 2022-06-07
WO2020083698A1 (fr) 2020-04-30
CN112911963B (zh) 2024-04-16
JP7066059B2 (ja) 2022-05-12
PL3869994T3 (pl) 2022-06-20
US20210393012A1 (en) 2021-12-23
KR20210079356A (ko) 2021-06-29
CN112911963A (zh) 2021-06-04

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