WO2007082903A1 - Resistance heating element for a hair-styling device and a hair-styling device equipped with said resistance heating element - Google Patents

Resistance heating element for a hair-styling device and a hair-styling device equipped with said resistance heating element Download PDF

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Publication number
WO2007082903A1
WO2007082903A1 PCT/EP2007/050469 EP2007050469W WO2007082903A1 WO 2007082903 A1 WO2007082903 A1 WO 2007082903A1 EP 2007050469 W EP2007050469 W EP 2007050469W WO 2007082903 A1 WO2007082903 A1 WO 2007082903A1
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WO
WIPO (PCT)
Prior art keywords
resistance heating
heating element
support body
hair styling
tool
Prior art date
Application number
PCT/EP2007/050469
Other languages
German (de)
French (fr)
Inventor
Klaus Hafemann
Original Assignee
Wik Far East Ltd.
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 Wik Far East Ltd. filed Critical Wik Far East Ltd.
Priority to EP07703966A priority Critical patent/EP1973441B1/en
Priority to US12/161,299 priority patent/US20100237057A1/en
Priority to DE502007006938T priority patent/DE502007006938D1/en
Publication of WO2007082903A1 publication Critical patent/WO2007082903A1/en

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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
    • A45D6/00—Details of, or accessories for, hair-curling or hair-waving devices
    • A45D6/20—Devices for controlling the temperature of hair curlers

Definitions

  • the invention relates to a resistance heating element for a hair styling device with a resistance heating wire arrangement held by a support body, comprising at least one heating wire, and a layer that covers the at least one heating wire, this electrically insulating layer.
  • Hair styling devices such as crimpers or curling irons, have hair styling tools to which hair may be formed. With a crimper, these are the hair styling plates arranged on one arm each. In a curling iron is used as a hair-styling tool, the heated rod around which the hair is wound to form a curl. Heat is needed to form the hair. For this reason, the hair styling tools of such hair styling devices are heated.
  • crimpers or curling irons have hair styling tools to which hair may be formed.
  • these hair styling plates arranged on one arm each.
  • the heated rod around which the hair is wound to form a curl Heat is needed to form the hair.
  • the hair styling tools of such hair styling devices are heated.
  • one or more resistance heating elements are integrated into the respective hair styling tool. These resistance heating elements may be so-called PTC heating elements or those in which the required heat is generated by a lovedsflowerdraht.
  • PTC heating elements are so-called flat heating elements, which are arranged in an aluminum jacket.
  • the aluminum jacket surrounding the actual heating element serves to distribute the heat across the required surface and transport the heat away from the heating element to the inside of the hair styling tool.
  • Resistance heating elements with a heating wire are used in a similar manner as described above for the PTC heating element.
  • a heating cartridge or tubular heater such heating elements are typically integrated in an aluminum jacket to distribute the heat generated and transported to the inside of the heated surfaces or the hair-styling tool.
  • Hair styling devices equipped with such resistance heating elements require a certain time until the heat generated by the heating element is applied to the surface of the hair styling device to be heated. ges has been transferred or passed. This is due to the aluminum sheath, which is necessary, however, for transferring the heat of the heating element to the hair-styling tool, and must be miter stiirmt for this purpose. As a result of the mass heated after reaching the operating temperature, the hair styling tool cools down relatively slowly after switching off the resistance heating element. As heat-transporting and heat-distributing jacket, an aluminum one is used, not only because of the good heat-conducting properties, but also because of the relatively low specific weight of aluminum. Finally, the hair styling tool and thus the entire hair styling device should be as light as possible.
  • a styling bar with an electric heater is known.
  • a foil heating element is provided.
  • the resistance heating foil is disposed in direct contact with the inside of the tube of the styling bar described in this document.
  • a slotted tubular spring element is provided to fix the film heater.
  • the outside of the film heating is biased on the inside of the tube of the styling bar.
  • the film heater itself is a sheet-like, flexible component which is to be applied by means of an assembly to the inside of the tube of the Fri sierstabes before the desired surface pressure is applied by means of the spring element. Therefore, the assembly of such a resistance heating foil at least, if this is to be used in a serving as a hair-shaping tube, to perform with particular care.
  • the object of the invention is to further develop a resistance heating element such that in a device, in particular a hair styling device, into which one or more of these resistance heating elements are integrated, not only a faster reaction time with respect to one Heating and cooling given but basically easy to assemble.
  • a resistance heating element such that in a device, in particular a hair styling device, into which one or more of these resistance heating elements are integrated, not only a faster reaction time with respect to one Heating and cooling given but basically easy to assemble.
  • This resistance heating element essentially has only the material electrically insulating the heating wires. Therefore, the support body supporting the resistance heating wire is formed of such a material. Expediently, this material is a mineral-based material, wherein mica is preferably used as the base material. A metal cladding does not generally have this resistance heating element. It can be provided that, on the outside, the electrically insulating layer covering the heating wire, which likewise typically consists of such an aforementioned material, is additionally covered by one or more polyimide film layers, if improved electrical insulation between the resistance heating wire and the warming hair styling tool of the action device is necessary. A polyimide layer may be provided in the form of a thin coating or as a film coating.
  • this resistance heating element forms the tool to be heated itself, for example, the hair styling tool. If this is a curling iron, the resistance heating element is integrated into the tubular curling iron and with its outer side directly adjacent to the inside of the curling iron. Both elements - resistance heating element and curling iron - can be connected to each other, for example by gluing. Thus, this resistance heating element is ultimately carried by the tool to be heated.
  • the arrangement of the resistance heating element and in particular the lovedsSelles in close proximity to the surface to be heated hair styling tool has the advantage that the heat is generated where it is actually needed and therefore basically heat-distributing and heat-transporting moldings are not needed. This results in a very rapid reaction time, with the desired heat already being available on the hair styling tool almost immediately after the resistance heating element has been switched on.
  • the low heated mass which is essentially only the mass formed by the heated surface of the hair styling tool, also cools the tool more rapidly.
  • the faster reaction time of the hair styling tool with regard to its heating and cooling not only brings advantages in the handling of the hair styling device, but also in terms of energy consumption.
  • the support body for supporting the at least one heating wire of the resistance heating wire arrangement is dimensionally stable in contrast to a foil.
  • the support body may have different shapes, for example, be designed as a cylinder tube piece. This has the advantage that the support body or the resistance heating element can simultaneously be carriers for other components, which are then arranged in a defined arrangement to the support body and in particular its horrsSchdrahtan- order. This concerns, for example, the placement of a thermal fuse, which remains due to the dimensionally stable properties of the support body in the same arrangement to a temperature detection, even after the resistance heating element is used on a tool, for example in the tube of a curling iron.
  • the heating wire can be arranged on the support body in different ways.
  • the support body is a ring body, for example a ring cylinder section, the heating wire will be wound around the cylindrical support body.
  • the formation of the support body as a hollow body further has to Advantage that the required connections for the heating wire and possibly other elements, such as a thermal fuse and / or a sensor element, can be arranged on the inside. Due to the internal contacts, the entire outside of the resistance heating element can be used as a heating surface.
  • FIG. 1 is a schematic perspective view of a resistance heating element for a curling iron as a hair styling device
  • FIG. 2 shows a schematic longitudinal section through the resistance heating element of FIG. 1 and integrated in a curling bar;
  • a resistance heating element 1 comprises a support body 2, on which a resistance heating wire 3 is wound in several turns.
  • the lovedsSchdraht 3 wrapped around the support body 2 in several turns represents in the illustrated embodiment, the horrsflower- wire arrangement.
  • the heating wire 3 is externally covered by a heat-distributing electrically insulating layer 4 in the manner of a jacket.
  • the turns of the heating wire 3 on the support body 2 can be seen through the elevations in the layer 4 therethrough.
  • the support body 2 and the outer layer forming layer 4 is a mica-based material, as known for example under the name micanite.
  • the support body 2 consists in the illustrated embodiment of a thin micanite plate, which has been brought into the recognizable in Figure 1 annular cylindrical shape before the heating wire 3 has been wound on the outside of the support body 2.
  • the support body 2 thus has a dimensional stability corresponding to the requirements.
  • the necessary for contacting the heating wire 3 connections are located within the support body 2.
  • the two Ends of the lovedsSSdrahtes 3 out through an opening in the interior of the support body 2.
  • the reference numeral 5 denotes one of the two openings in FIG. 1, through which one end of the resistance heating wire 3 is guided through the support body 2.
  • the temperature sensor 6 On the outside of the resistance heating element 1 is a known temperature sensor 6.
  • the two connecting legs 7, T of the temperature sensor 6 pass through the layer 4 and the support body 2 and are also guided into the interior of the support body 2.
  • the temperature sensor 6 is located directly on the outside of the resistance heating element 1, which then abuts against the inside of the tool to be heated when the resistance heating element 1 is to be heated in a tubular object to be heated, for example a curling iron. It is therefore not necessary in the resistance heating element 1 to provide a temperature sensor as its own objective unit and independently of the heating element 1 and to connect electrically. Due to the intended immediate arrangement of the outside of the resistance heating element 1 on the inside of the tool to be heated, the resistance heating element itself can serve as a support for the temperature sensor 6.
  • the contact legs 7, T of the temperature sensor 6 are connected to electrical plug contacts 8, 8 '.
  • the plug contacts 8, 8 'on the inner circumferential surface 9 of the support body 2 are attached.
  • a holder 10 is further riveted for a known thermal fuse 11.
  • the thermal fuse 11 serves as overheating protection. This is enclosed in a glass silicone sleeve 12th
  • the arrangement of the relative to the support body 2 internal electrical contacting of the heating wire 3 can be seen in Figure 2.
  • the resistance heating element 1 is inserted in a tube 13 of a curling or styling rod, which is otherwise not shown in more detail, wherein in FIG. 2 only a portion of the tube 13 of the curling iron to be heated is inserted. shows.
  • three layers of a polyimide film are additionally applied to the outside of the resistance heating element 1. This is dimensioned slightly longer in its longitudinal extent than the length of the support body. 2
  • FIG. 3 shows the arrangement of the heating wire 3 provided in the immediate vicinity of the inner lateral surface 14 of the tube 13.
  • the support body 2 and the layer 4 serving as the outer sheath are, since they are material-identical, as a coherent body in FIG Figure 3 reproduced. Thus, it is also in the sheath forming layer 4 is a micanite molding.
  • the micanite molding enhances the dimensional stability of the resistance heating element 1. Dashed lines in this figure, the separation surface between the support body 2 and the layer 4 is shown.
  • the heating wires 3 have been wound onto the original outer side of the support body 2 and embedded in an electrically insulated manner as a result of the coating through the layer 4 in this body comprising support body 2 and layer 4. The wound around the support body 2 heating wire 3 is pressed into the support body 2 and in the outer shell forming layer 4.
  • the resistance heating wire 3 is spaced apart in the illustrated embodiment, solely by the layer 4 forming the outer jacket of the resistance heating element and the layers of the polyimide films 15 from the inner circumferential surface 14 of the tube 13 to be heated. This means that the path to be covered by the heat generated by the heating wire 3 to the outer surface 16 of the tube 13, is applied to the shaping of hair to be formed hair, to a necessary minimum.
  • This illustration further clarifies that essentially only the tube 13 serving as a hair-shaping tool has to be heated by the heating wire 3, so that the desired heat for making the hair-shaping process is available on its outer circumferential surface 16.
  • the tube 13 thus serves not only as an outer rigid support body for the resistance heating element 1, but also a further heat distribution.
  • the resistance heating element 1 need not extend over the entire length of the tube 13 of the curling iron. Due to the annular cylindrical structure of the resistance heating element 1, this lies with its outer side circumferentially on the inside of the tube 13, so that the tube 13 has on the outside a seen over the circumference same heat distribution.

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  • Resistance Heating (AREA)
  • Hair Curling (AREA)

Abstract

A resistance heating element 1 for a hair-styling device comprises a resistance heating wire arrangement, which is held by a support body 2, and also a layer which covers and electrically insulates the heating wire. The resistance heating wire arrangement has at least one heating wire 3. The support body 2 is formed solely by a hollow body which is composed of an electrically insulating, heat-resistant material, and the outside of the resistance heating element 1 is formed by the layer which covers the heating wire 3.

Description

Widerstandsheizelement für ein Haarformgerät sowie damit ausgerüstetes Haarformgerät Resistance heating element for a hair styling device and hair styling device equipped therewith
Die Erfindung betrifft ein Widerstandsheizelement für ein Haarformgerät mit einer von einem Tragekörper gehaltenen, zumindest einen Heizdraht umfassenden Widerstandsheizdrahtanordnung und einer den wenigstens einen Heizdraht bedeckenden, diesen elektrisch isolierenden Schicht.The invention relates to a resistance heating element for a hair styling device with a resistance heating wire arrangement held by a support body, comprising at least one heating wire, and a layer that covers the at least one heating wire, this electrically insulating layer.
Haarformgeräte, wie beispielsweise Crimper oder Lockenstäbe verfügen über Haarformwerkzeuge, an bzw. mit denen Haar geformt werden kann. Bei einem Crimper sind dieses die an jeweils einem Arm angeordneten Haarformplatten. Bei einem Lockenstab dient als Haarformwerkzeug der beheizte Stab, um den das Haar zum Ausformen einer Locke gewickelt wird. Zum Formen des Haares wird Wärme benötigt. Aus diesem Grunde sind die Haarformwerkzeuge derartiger Haarformgeräte beheizt. Neben Haarformgeräten, bei denen die Wärme mittels eines Warmluftstromes bereit gestellt wird, sind auch solche Haarformgeräte bekannt, bei denen in das jeweilige Haarformwerkzeug ein oder mehrere Widerstandsheizelemente integriert sind. Bei diesen Widerstandsheizelementen kann es sich um sogenannte PTC-Heizelemente handeln oder um solche, bei denen die benötigte Wärme durch einen Widerstandsheizdraht generiert wird. PTC-Heizelemente sind sogenannte Flachheizelemente, die in einem Aluminiummantel angeordnet sind. Der das eigentliche Heizelement umgebende Aluminiummantel dient zum Verteilen der Wärme über die benötigte Oberfläche und zum Transportieren der Wärme von dem Heizelement weg hin zu der Innenseite des Haarformwerkzeuges. Widerstands- heizelemente mit einem Heizdraht werden in ähnlicher Art und Weise eingesetzt, wie dieses zu dem PTC-Heizelement zuvor beschrieben worden ist. Als Heizpatrone oder Rohrheizkörper sind derartige Heizelemente typischerweise in einem Aluminiummantel integriert, um die erzeugte Wärme zu verteilen und an die Innenseite des oder der beheizten Oberflächen des Haarformwerkzeuges zu transportieren.Hair styling devices, such as crimpers or curling irons, have hair styling tools to which hair may be formed. With a crimper, these are the hair styling plates arranged on one arm each. In a curling iron is used as a hair-styling tool, the heated rod around which the hair is wound to form a curl. Heat is needed to form the hair. For this reason, the hair styling tools of such hair styling devices are heated. In addition to hair styling devices in which the heat is provided by means of a stream of hot air, such hair styling devices are known in which one or more resistance heating elements are integrated into the respective hair styling tool. These resistance heating elements may be so-called PTC heating elements or those in which the required heat is generated by a Widerstandsheizdraht. PTC heating elements are so-called flat heating elements, which are arranged in an aluminum jacket. The aluminum jacket surrounding the actual heating element serves to distribute the heat across the required surface and transport the heat away from the heating element to the inside of the hair styling tool. Resistance heating elements with a heating wire are used in a similar manner as described above for the PTC heating element. As a heating cartridge or tubular heater such heating elements are typically integrated in an aluminum jacket to distribute the heat generated and transported to the inside of the heated surfaces or the hair-styling tool.
Haarformgeräte, die mit derartigen Widerstandsheizelementen ausgerüstet sind, benötigen eine gewisse Zeit, bis die durch das Heizelement erzeugte Wärme auf die zu erwärmende Oberfläche des Haarformwerkzeu- ges übertragen bzw. geleitet worden ist. Bedingt ist dieses durch den Aluminiummantel, der jedoch zum Übertragen der Wärme des Heizelementes auf das Haarformwerkzeug notwendig ist, und zu diesem Zweck miterwärmt werden muss. Infolge der nach Erreichen der Betriebstemperatur erwärmten Masse kühlt sich das Haarformwerkzeug nach Ausschalten des Widerstandsheizelementes relativ langsam ab. Als wärmetransportierender und wärmeverteilender Mantel wird ein solcher aus Aluminium eingesetzt, nicht nur wegen der guten wärmeleitenden Eigenschaften, sondern auch aufgrund des relativ geringen spezifischen Gewichtes von Alumi- nium. Schließlich soll das Haarformwerkzeug und damit das gesamte Haarformgerät möglichst leicht sein.Hair styling devices equipped with such resistance heating elements require a certain time until the heat generated by the heating element is applied to the surface of the hair styling device to be heated. ges has been transferred or passed. This is due to the aluminum sheath, which is necessary, however, for transferring the heat of the heating element to the hair-styling tool, and must be miterwärmt for this purpose. As a result of the mass heated after reaching the operating temperature, the hair styling tool cools down relatively slowly after switching off the resistance heating element. As heat-transporting and heat-distributing jacket, an aluminum one is used, not only because of the good heat-conducting properties, but also because of the relatively low specific weight of aluminum. Finally, the hair styling tool and thus the entire hair styling device should be as light as possible.
Aus EP 0 218 797 A2 ist ein Frisierstab mit einer Elektroheizung bekannt. Als Widerstandsheizelement dieses Frisierstabes ist ein Folienheizelement vorgesehen. Die Widerstandsheizfolie ist in unmittelbarem Kontakt an der Rohrinnenseite des Rohres des in diesem Dokument beschriebenen Frisierstabes angeordnet. Zum Fixieren der Folienheizung dient ein geschlitztes rohrförmiges Federelement. Durch das Federelement liegt die Außenseite der Folienheizung unter Vorspannung an der Innenseite des Rohres des Frisierstabes. Eine solche Anordnung ist erforderlich, damit die durch den Widerstandsheizdraht der Folienheizung generierte Wärme abgeführt wird, da ansonsten die Gefahr besteht, dass die Folienheizung zerstört wird. Die Folienheizung selbst ist ein flächenhaftes, biegsames Bauteil, welches im Wege einer Montage an die Innenseite des Rohres des Fri- sierstabes anzulegen ist, bevor mittels des Federelementes die gewünschte Flächenpressung aufgebracht wird. Daher ist auch die Montage einer solchen Widerstandsheizfolie zumindest, wenn diese in ein als Haarformwerkzeug dienendes Rohr eingesetzt werden soll, mit besonderer Sorgfalt auszuführen.From EP 0 218 797 A2 a styling bar with an electric heater is known. As a resistance heating of this styling a foil heating element is provided. The resistance heating foil is disposed in direct contact with the inside of the tube of the styling bar described in this document. To fix the film heater is a slotted tubular spring element. By the spring element, the outside of the film heating is biased on the inside of the tube of the styling bar. Such an arrangement is required so that the heat generated by the Widerstandsheizdraht the film heating heat dissipated, otherwise there is a risk that the film heater is destroyed. The film heater itself is a sheet-like, flexible component which is to be applied by means of an assembly to the inside of the tube of the Fri sierstabes before the desired surface pressure is applied by means of the spring element. Therefore, the assembly of such a resistance heating foil at least, if this is to be used in a serving as a hair-shaping tube, to perform with particular care.
Ausgehend von dem eingangs diskutierten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein eingangs genanntes Widerstandsheizelement dergestalt weiterzubilden, dass bei einem Gerät, insbesondere einem Haarformgerät, in das eines oder mehrere dieser Widerstands- heizelemente integriert sind, nicht nur eine raschere Reaktionszeit bezüglich einer Erwärmung sowie einer Abkühlung gegeben sondern grundsätzlich auch problemlos zu montieren ist. Diese Aufgabe wird erfindungsgemäß durch ein eingangs genanntes, gattungsgemäßes Widerstandsheizelement gelöst, bei dem der Tragekörper allein durch einen aus einem elektrisch isolierenden, hitzebeständigen Ma- terial bestehenden Hohlkörper und die Außenseite des Widerstandsheizelementes durch die den Heizdraht bedeckende Schicht gebildet ist.Based on the prior art discussed in the introduction, the object of the invention is to further develop a resistance heating element such that in a device, in particular a hair styling device, into which one or more of these resistance heating elements are integrated, not only a faster reaction time with respect to one Heating and cooling given but basically easy to assemble. This object is achieved by an aforementioned, generic resistance heating element, wherein the support body is formed solely by a hollow body consisting of an electrically insulating, heat-resistant material and the outside of the resistance heating element by the heating wire covering layer.
Dieses Widerstandsheizelement weist im Wesentlichen ausschließlich das die Heizdrähte elektrisch isolierende Material auf. Daher ist der den Wi- derstandsheizdraht tragende Tragekörper aus einem solchen Material gebildet. Zweckmäßigerweise handelt es sich bei diesem Material um ein solches auf mineralischer Basis, wobei bevorzugt Glimmer als Basismaterial eingesetzt wird. Eine Metallverkleidung weist dieses Widerstandsheizelement grundsätzlich nicht auf. Es kann vorgesehen sein, dass außen- seitig die den Heizdraht bedeckende elektrisch isolierende Schicht, die typischerweise ebenfalls aus einem solchen vorgenannten Material besteht, zusätzlich noch durch eine oder mehrere Polyimid-Folienlagen bedeckt ist, wenn eine verbesserte elektrische Isolierung zwischen dem Widerstandsheizdraht und dem zu erwärmenden Haarformwerkzeug des Handlungsgerätes notwendig ist. Eine Polyimid-Lage kann in Form eines dünnen Überzuges oder als eine Folienauftragung vorgesehen sein.This resistance heating element essentially has only the material electrically insulating the heating wires. Therefore, the support body supporting the resistance heating wire is formed of such a material. Expediently, this material is a mineral-based material, wherein mica is preferably used as the base material. A metal cladding does not generally have this resistance heating element. It can be provided that, on the outside, the electrically insulating layer covering the heating wire, which likewise typically consists of such an aforementioned material, is additionally covered by one or more polyimide film layers, if improved electrical insulation between the resistance heating wire and the warming hair styling tool of the action device is necessary. A polyimide layer may be provided in the form of a thin coating or as a film coating.
Den eigentlichen Träger für dieses Widerstandsheizelement bildet das zu beheizende Werkzeug selbst, beispielsweise das Haarformwerkzeug. Handelt es sich bei diesem um einen Lockenstab, ist das Widerstandsheizelement in den rohrförmigen Lockenstab integriert und grenzt mit seiner Außenseite unmittelbar an die Innenseite des Lockenstabes. Beide Elemente - Widerstandsheizelement und Lockenstab - können miteinander verbunden sein, beispielsweise durch eine Verklebung. Somit wird die- ses Widerstandsheizelement letztendlich von dem zu erwärmenden Werkzeug getragen. Die typischerweise flexiblen Eigenschaften eines auf mineralischer Basis aufgebauten elektrisch isolierenden Materiales, insbesondere, wenn dieses eine Glimmerbasis aufweist, erlauben, dass das Widerstandsheizelement ohne weiteres an die Innenkontur eines Haarform- Werkzeuges angepasst werden kann. Es ist daher grundsätzlich nicht notwendig, dass das Widerstandsheizelement mit seiner Außenseite eine feste vordefinierte und insbesondere an die Heizelementaufnahme des Werkzeuges angepasste Kontur aufweist. Lediglich der Umfang des Widerstandsheizelementes sollte dem Umfang der inneren Mantelfläche des Haarformwerkzeuges entsprechen. Das Anordnen des Widerstandsheizelementes und insbesondere des Widerstandsheizdrahtes in unmittelbarer Nähe zu der zu erwärmenden Oberfläche des Haarformwerkzeuges hat zum Vorteil, dass die Wärme dort erzeugt wird, wo sie tatsächlich benötigt wird und daher grundsätzlich wärmeverteilende und wärmetransportierende Formkörper nicht benötigt werden. Dieses hat eine sehr rasche Reaktionszeit zur Folge, wobei bereits quasi unmittelbar nach Einschalten des Widerstandsheizelementes die gewünschte Wärme am Haarformwerkzeug zur Verfügung steht. Die geringe erwärmte Masse, bei der es sich im Wesentlichen lediglich um die durch die erwärmte Oberfläche des Haarformwerkzeuges gebildete Masse handelt, kühlt das Werkzeug ebenfalls rascher ab. Die raschere Reaktionszeit des Haarformwerkzeuges hin- sichtlich seiner Erwärmung und Abkühlung bringt nicht nur Vorteile in der Handhabung des Haarformgerätes, sondern auch hinsichtlich des Energieverbrauches.The actual support for this resistance heating element forms the tool to be heated itself, for example, the hair styling tool. If this is a curling iron, the resistance heating element is integrated into the tubular curling iron and with its outer side directly adjacent to the inside of the curling iron. Both elements - resistance heating element and curling iron - can be connected to each other, for example by gluing. Thus, this resistance heating element is ultimately carried by the tool to be heated. The typically flexible properties of a mineral based electrically insulating material, especially if it has a mica base, allow the resistance heating element to be readily adapted to the inner contour of a hair styling tool. It is therefore not necessary in principle that the resistance heating element with its outside a fixed predefined and in particular to the Heizelementaufnahme of Tool has adapted contour. Only the circumference of the resistance heating element should correspond to the circumference of the inner circumferential surface of the hair styling tool. The arrangement of the resistance heating element and in particular the Widerstandsheizdrahtes in close proximity to the surface to be heated hair styling tool has the advantage that the heat is generated where it is actually needed and therefore basically heat-distributing and heat-transporting moldings are not needed. This results in a very rapid reaction time, with the desired heat already being available on the hair styling tool almost immediately after the resistance heating element has been switched on. The low heated mass, which is essentially only the mass formed by the heated surface of the hair styling tool, also cools the tool more rapidly. The faster reaction time of the hair styling tool with regard to its heating and cooling not only brings advantages in the handling of the hair styling device, but also in terms of energy consumption.
Der Tragekörper zum Tragen des wenigstens einen Heizdrahts der Wider- standsheizdrahtanordnung ist im Unterschied zu einer Folie formstabil. Der Tragekörper kann unterschiedliche Formen aufweisen, beispielsweise als Zylinderrohrstück ausgebildet sein. Dieses hat zum Vorteil, dass der Tragekörper bzw. das Widerstandsheizelement gleichzeitig Träger für weitere Komponenten sein kann, die sodann in einer definierten Anordnung zu dem Tragekörper und insbesondere seiner Widerstandsheizdrahtan- ordnung angeordnet sind. Dieses betrifft beispielsweise das Anordnen einer Thermosicherung, die aufgrund der formstabilen Eigenschaften des Tragekörpers in derselben Anordnung zu einer Temperaturerfassung verbleibt, auch nachdem das Widerstandsheizelement an einem Werkzeug, beispielsweise in das Rohr eines Lockenstabes eingesetzt ist.The support body for supporting the at least one heating wire of the resistance heating wire arrangement is dimensionally stable in contrast to a foil. The support body may have different shapes, for example, be designed as a cylinder tube piece. This has the advantage that the support body or the resistance heating element can simultaneously be carriers for other components, which are then arranged in a defined arrangement to the support body and in particular its Widerstandsheizdrahtan- order. This concerns, for example, the placement of a thermal fuse, which remains due to the dimensionally stable properties of the support body in the same arrangement to a temperature detection, even after the resistance heating element is used on a tool, for example in the tube of a curling iron.
Der Heizdraht kann auf unterschiedliche Art und Weise an dem Tragekörper angeordnet. Insbesondere, wenn es sich bei dem Tragekörper um einen Ringkörper, beispielsweise einen Ringzylinderabschnitt handelt, wird man den Heizdraht um den zylindrischen Tragekörper wickeln.The heating wire can be arranged on the support body in different ways. In particular, if the support body is a ring body, for example a ring cylinder section, the heating wire will be wound around the cylindrical support body.
Die Ausbildung des Tragekörpers als Hohlkörper hat des Weiteren zum Vorteil, dass die benötigen Anschlüsse für den Heizdraht und gegebenenfalls weitere Elemente, wie beispielsweise eine Thermosicherung und/oder ein Sensorelement, innenliegend angeordnet sein können. Infolge der innenliegenden Kontakte kann die gesamte Außenseite des Wi- derstandsheizelementes als Heizfläche genutzt werden.The formation of the support body as a hollow body further has to Advantage that the required connections for the heating wire and possibly other elements, such as a thermal fuse and / or a sensor element, can be arranged on the inside. Due to the internal contacts, the entire outside of the resistance heating element can be used as a heating surface.
Nachfolgend ist die Erfindung anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügten Figuren beschrieben. Es zeigen:The invention is described below with reference to an embodiment with reference to the accompanying figures. Show it:
Fig. 1 : eine schematisierte perspektivische Ansicht eines Widerstands heizelementes für einen Lockenstab als Haarformgerät,1 is a schematic perspective view of a resistance heating element for a curling iron as a hair styling device,
Fig. 2: ein schematisierter Längsschnitt durch das in einen Locken- stab integrierte Widerstandheizelement der Figur 1 undFIG. 2 shows a schematic longitudinal section through the resistance heating element of FIG. 1 and integrated in a curling bar;
Fig. 3: einen vergrößerten Ausschnitt der Figur 2.3: an enlarged detail of Figure 2.
Ein Widerstandsheizelement 1 umfasst einen Tragekörper 2, auf dem ein Widerstandsheizdraht 3 in mehreren Windungen gewickelt ist. Der um den Tragekörper 2 in mehreren Windungen umwickelte Widerstandsheizdraht 3 stellt bei dem dargestellten Ausführungsbeispiel die Widerstandsheiz- drahtanordnung dar. Der Heizdraht 3 ist außenseitig durch eine wärmeverteilende elektrisch isolierende Schicht 4 nach Art eines Mantels bedeckt. Die Windungen des Heizdrahtes 3 auf dem Tragekörper 2 sind durch die Aufrisse in der Schicht 4 hindurch erkennbar. Bei dem Tragekörper 2 und bei der den äußeren Mantel bildenden Schicht 4 handelt es sich um ein auf Glimmerbasis hergestelltes Material, wie dieses beispielsweise unter der Bezeichnung Mikanit bekannt ist. Der Tragekörper 2 besteht bei dem dargestellten Ausführungsbeispiel aus einer dünnen Mikanit-Platte, die in die in Figur 1 erkennbare ringzylindrische Form gebracht worden ist, bevor der Heizdraht 3 auf die Außenseite des Tragekörpers 2 gewickelt worden ist. Der Tragekörper 2 weist mithin eine den Anforderungen entsprechende Formstabilität auf.A resistance heating element 1 comprises a support body 2, on which a resistance heating wire 3 is wound in several turns. The Widerstandsheizdraht 3 wrapped around the support body 2 in several turns represents in the illustrated embodiment, the Widerstandsheiz- wire arrangement. The heating wire 3 is externally covered by a heat-distributing electrically insulating layer 4 in the manner of a jacket. The turns of the heating wire 3 on the support body 2 can be seen through the elevations in the layer 4 therethrough. The support body 2 and the outer layer forming layer 4 is a mica-based material, as known for example under the name micanite. The support body 2 consists in the illustrated embodiment of a thin micanite plate, which has been brought into the recognizable in Figure 1 annular cylindrical shape before the heating wire 3 has been wound on the outside of the support body 2. The support body 2 thus has a dimensional stability corresponding to the requirements.
Die zum Kontaktieren des Heizdrahtes 3 notwendigen Anschlüsse befinden sich innerhalb des Tragekörpers 2. Zu diesem Zweck sind die beiden Enden des Widerstandsheizdrahtes 3 durch jeweils eine Öffnung in das Innere des Tragekörpers 2 geführt. Mit dem Bezugszeichen 5 ist eine der beiden Öffnungen in Figur 1 gekennzeichnet, durch die das eine Ende des Widerstandsheizdrahtes 3 durch den Tragekörper 2 hindurch geführt ist.The necessary for contacting the heating wire 3 connections are located within the support body 2. For this purpose, the two Ends of the Widerstandsheizdrahtes 3 out through an opening in the interior of the support body 2. The reference numeral 5 denotes one of the two openings in FIG. 1, through which one end of the resistance heating wire 3 is guided through the support body 2.
Auf der Außenseite des Widerstandsheizelements 1 befindet sich ein an sich bekannter Temperatursensor 6. Die beiden Anschlussbeine 7, T des Temperatursensors 6 durchgreifen die Schicht 4 und den Tragekörper 2 und sind ebenfalls in das Innere des Tragekörpers 2 geführt. Somit befin- det sich unmittelbar an der Außenseite des Widerstandsheizelementes 1 der Temperatursensor 6, der sodann bei einem Einsatz des Widerstandsheizelementes 1 in einem zu erwärmenden rohrförmigen Gegenstand, beispielsweise einem Lockenstab, an der Innenseite des zu erwärmenden Werkzeuges anliegt. Es ist daher bei dem Widerstandsheizelement 1 nicht notwendig, einen Temperatursensor als eigene gegenständliche Einheit und unabhängig von dem Heizelement 1 vorzusehen und elektrisch anzuschließen. Durch die vorgesehene unmittelbare Anordnung der Außenseite des Widerstandsheizelementes 1 an der Innenseite des zu erwärmenden Werkzeuges kann das Widerstandsheizelement selbst als Träger für den Temperatursensor 6 dienen. Die Kontaktbeine 7, T des Temperatursensors 6 sind an elektrische Steckerkontakte 8, 8' angeschlossen. Die Steckerkontakte 8, 8' ragen in Längsrichtung des Tragekörpers 2 von diesem ab und werden zum Anschließen des Temperatursensors 6 mit einem komplementären Gegenstecker kontaktiert. Bei dem dargestellten Ausfüh- rungsbeispiel sind die Steckerkontakte 8, 8' an der inneren Mantelfläche 9 des Tragekörpers 2 befestigt.On the outside of the resistance heating element 1 is a known temperature sensor 6. The two connecting legs 7, T of the temperature sensor 6 pass through the layer 4 and the support body 2 and are also guided into the interior of the support body 2. Thus, the temperature sensor 6 is located directly on the outside of the resistance heating element 1, which then abuts against the inside of the tool to be heated when the resistance heating element 1 is to be heated in a tubular object to be heated, for example a curling iron. It is therefore not necessary in the resistance heating element 1 to provide a temperature sensor as its own objective unit and independently of the heating element 1 and to connect electrically. Due to the intended immediate arrangement of the outside of the resistance heating element 1 on the inside of the tool to be heated, the resistance heating element itself can serve as a support for the temperature sensor 6. The contact legs 7, T of the temperature sensor 6 are connected to electrical plug contacts 8, 8 '. The plug contacts 8, 8 'protrude in the longitudinal direction of the support body 2 of this and are contacted for connecting the temperature sensor 6 with a complementary mating connector. In the illustrated embodiment, the plug contacts 8, 8 'on the inner circumferential surface 9 of the support body 2 are attached.
An der inneren Mantelfläche 9 des Tragekörpers 2 ist des Weiteren ein Halter 10 für eine an sich bekannte Thermosicherung 11 angenietet. Die Thermosicherung 11 dient als Überhitzungssicherung. Diese ist eingefasst in einer Glassilikonhülse 12.On the inner circumferential surface 9 of the support body 2, a holder 10 is further riveted for a known thermal fuse 11. The thermal fuse 11 serves as overheating protection. This is enclosed in a glass silicone sleeve 12th
Die Anordnung der bezüglich des Tragekörpers 2 innenliegenden elektrischen Kontaktierung des Heizdrahtes 3 ist in Figur 2 erkennbar. Das Wi- derstandsheizelement 1 ist in einem Rohr 13 eines ansonsten nicht näher dargestellten Locken- bzw. Frisierstabes eingesetzt, wobei in Figur 2 lediglich ein Abschnitt des zu erwärmenden Rohres 13 des Lockenstabes ge- zeigt ist. Zum Gewährleisten der notwendigen elektrischen Isolierung zwischen dem Widerstandsheizelement 1 und dem bei dem dargestellten Ausführungsbeispiel als Haarformwerkzeug dienenden Rohr 13 sind auf die Außenseite des Widerstandsheizelementes 1 zusätzlich drei Lagen einer Polyimid-Folie aufgebracht. Diese ist in ihrer Längserstreckung etwas länger bemessen als die Länge des Tragekörpers 2.The arrangement of the relative to the support body 2 internal electrical contacting of the heating wire 3 can be seen in Figure 2. The resistance heating element 1 is inserted in a tube 13 of a curling or styling rod, which is otherwise not shown in more detail, wherein in FIG. 2 only a portion of the tube 13 of the curling iron to be heated is inserted. shows. To ensure the necessary electrical insulation between the resistance heating element 1 and serving as a hair-shaping tool in the illustrated embodiment tube 13 three layers of a polyimide film are additionally applied to the outside of the resistance heating element 1. This is dimensioned slightly longer in its longitudinal extent than the length of the support body. 2
Der in Figur 3 dargestellte vergrößerte Ausschnitt der Figur 2 zeigt die in unmittelbarer Nachbarschaft zur inneren Mantelfläche 14 des Rohres 13 vorgesehene Anordnung des Heizdrahtes 3. Der Tragekörper 2 und die als äußere Ummantelung dienende Schicht 4 sind, da diese materialidentisch sind, als zusammenhängender Körper in Figur 3 wiedergegeben. Somit handelt es sich auch bei der die Ummantelung bildenden Schicht 4 um ein Mikanit-Formteil. Das Mikanit-Formteil verstärkt die Formstabilität des Widerstandsheizelementes 1. Gestrichelt ist in dieser Figur die Trennfläche zwischen dem Tragekörper 2 und der Schicht 4 dargestellt. Die Heizdrähte 3 sind auf die ursprüngliche Außenseite des Tragekörpers 2 aufgewickelt worden und infolge der Ummantelung durch die Schicht 4 in diesem aus Tragekörper 2 und Schicht 4 bildenden Körper elektrisch iso- liert eingebettet. Der um den Tragekörper 2 gewickelte Heizdraht 3 ist in den Tragekörper 2 sowie in die den äußeren Mantel bildenden Schicht 4 eingedrückt.The enlarged detail of FIG. 2 shown in FIG. 3 shows the arrangement of the heating wire 3 provided in the immediate vicinity of the inner lateral surface 14 of the tube 13. The support body 2 and the layer 4 serving as the outer sheath are, since they are material-identical, as a coherent body in FIG Figure 3 reproduced. Thus, it is also in the sheath forming layer 4 is a micanite molding. The micanite molding enhances the dimensional stability of the resistance heating element 1. Dashed lines in this figure, the separation surface between the support body 2 and the layer 4 is shown. The heating wires 3 have been wound onto the original outer side of the support body 2 and embedded in an electrically insulated manner as a result of the coating through the layer 4 in this body comprising support body 2 and layer 4. The wound around the support body 2 heating wire 3 is pressed into the support body 2 and in the outer shell forming layer 4.
Der Widerstandsheizdraht 3 ist bei dem dargestellten Ausführungsbeispiel allein durch die den äußeren Mantel des Widerstandsheizelementes bildende Schicht 4 und die Lagen der Polyimid-Folien 15 von der inneren Mantelfläche 14 des zu beheizenden Rohres 13 beabstandet. Dieses bedeutet, dass der zurückzulegende Weg der von dem Heizdraht 3 generierten Wärme bis zur äußeren Mantelfläche 16 des Rohres 13, an dem zum Formen von Haar das zu formende Haar anliegt, auf ein notwendiges Minimum reduziert ist. Diese Darstellung verdeutlicht des Weiteren, dass durch den Heizdraht 3 im Wesentlichen nur das als Haarformwerkzeug dienende Rohr 13 erwärmt werden muss, damit an dessen äußerer Mantelfläche 16 die gewünschte Wärme zum Vornehmen des Haarform- prozesses zur Verfügung steht. Das Rohr 13 dient somit nicht nur als äußerer starrer Trägekörper für das Widerstandsheizelement 1 , sondern auch einer weiteren Wärmeverteilung. Aufgrund der wärmeverteilenden Eigenschaften des Rohres 13 braucht das Widerstandsheizelement 1 sich nicht über die gesamte Länge des Rohres 13 des Lockenstabes erstrecken. Aufgrund der ringzylindrischen Struktur des Widerstandsheizelementes 1 liegt dieses mit seiner Außenseite umfänglich an der Innenseite des Rohres 13 an, so dass das Rohr 13 außenseitig eine über den Umfang gesehen gleiche Wärmeverteilung aufweist. The resistance heating wire 3 is spaced apart in the illustrated embodiment, solely by the layer 4 forming the outer jacket of the resistance heating element and the layers of the polyimide films 15 from the inner circumferential surface 14 of the tube 13 to be heated. This means that the path to be covered by the heat generated by the heating wire 3 to the outer surface 16 of the tube 13, is applied to the shaping of hair to be formed hair, to a necessary minimum. This illustration further clarifies that essentially only the tube 13 serving as a hair-shaping tool has to be heated by the heating wire 3, so that the desired heat for making the hair-shaping process is available on its outer circumferential surface 16. The tube 13 thus serves not only as an outer rigid support body for the resistance heating element 1, but also a further heat distribution. Due to the heat distributing Characteristics of the tube 13, the resistance heating element 1 need not extend over the entire length of the tube 13 of the curling iron. Due to the annular cylindrical structure of the resistance heating element 1, this lies with its outer side circumferentially on the inside of the tube 13, so that the tube 13 has on the outside a seen over the circumference same heat distribution.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Widerstandsheizelement1 resistance heating element
2 Tragekörper2 carrying bodies
3 Widerstandsheizdraht3 resistance heating wire
4 Schicht4 layer
5 Öffnung5 opening
6 Temperatursensor , 7' Anschlussbeine , 8' Steckerkontakte6 temperature sensor, 7 'connection legs, 8' plug contacts
9 Innere Mantelfläche des Tragekörpers9 Inner surface of the support body
10 Halter10 holders
11 Thermosicherung11 thermal fuse
12 Glassilikonhülse12 glass silicone sleeve
13 Rohr13 pipe
14 Innere Mantelfläche des Rohrs14 Inner surface of the pipe
15 Polyimid-Folie15 polyimide film
16 Äußere Mantelfläche des Rohrs 16 Outer lateral surface of the pipe

Claims

Patentansprϋche Patentansprϋche
1. Widerstandsheizelement für ein Haarformgerät mit einer von einem Tragekörper (2) gehaltenen , zumindest einen Heizdraht (3) umfassenden Widerstandsheizdrahtanordnung und einer den wenigstens einen Heizdraht (3) bedeckenden, diesen elektrisch isolierenden Schicht (4), dadurch gekennzeichnet, dass der Tragekörper (2) allein durch einen aus einem elektrisch isolierenden, hitzebe- ständigen Material bestehenden Hohlkörper und die Außenseite des Widerstandsheizelementes (1 ) durch die den Heizdraht (3) bedeckende Schicht (4) gebildet ist.1. Resistance heating element for a hair styling device with one of a support body (2) held, at least one heating wire (3) comprising Widerstandsheizdrahtanordnung and the at least one heating wire (3) covering, this electrically insulating layer (4), characterized in that the support body ( 2) is formed solely by a hollow body consisting of an electrically insulating, heat-resistant material and the outside of the resistance heating element (1) by the layer (4) covering the heating wire (3).
2. Widerstandsheizelement nach Anspruch 1 , dadurch gekennzeich- net, dass der Tragekörper (2) ein Ringkörper, insbesondere ein2. Resistance heating element according to claim 1, characterized marked, that the support body (2) an annular body, in particular a
Ringzylinder ist.Ring cylinder is.
3. Widerstandsheizelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das elektrisch isolierende hitzebeständige Ma- terial des Tragekörpers (2) sowie der Heizdrahtbedeckung (4) ein3. Resistance heating element according to claim 1 or 2, characterized in that the electrically insulating heat-resistant ma- material of the support body (2) and the Heizdrahtbedeckung (4) a
Material auf mineralischer Basis sind.Material are mineral-based.
4. Widerstandsheizelement nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die elektrischen Anschlüsse zum Kontaktieren des Heizdrahtes (3) bezüglich des Tragekörpers (2) innenliegend angeordnet sind.4. Resistance heating element according to one of claims 1 to 3, characterized in that the electrical connections for contacting the heating wire (3) with respect to the support body (2) are arranged on the inside.
5. Widerstandsheizelement nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass dem Widerstandsheizelement (1 ) ei- ne Thermosicherung (11) zugeordnet ist, die bezüglich des Tragekörpers (2) innenliegend angeordnet ist.5. Resistance heating element according to one of claims 1 to 4, characterized in that the resistance heating element (1) is assigned a ne thermal fuse (11) which is arranged with respect to the support body (2) on the inside.
6. Widerstandsheizelement nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass auf der Außenseite des Wider- Standsheizelementes (1 ) ein Temperatursensor (6) mit bezüglich des Tragekörpers (2) innenliegenden elektrischen Anschlusskontakten (8, 8') angeordnet ist. 6. Resistance heating element according to one of claims 1 to 5, characterized in that on the outside of the Wider- Standsheizelementes (1) a temperature sensor (6) with respect to the support body (2) internal electrical connection contacts (8, 8 ') is arranged.
7. Widerstandsheizelement nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Widerstandsheizelement (1 ) mit seiner Außenseite unter Zwischenschaltung zumindest einer als elektrische Isolierung dienenden Folienlage in quasi unmittelbarem7. Resistance heating element according to one of claims 1 to 6, characterized in that the resistance heating element (1) with its outside with the interposition of at least one serving as electrical insulation film layer in quasi-immediate
Kontakt zu einem zu erwärmenden rohrförmigen Werkzeug, insbesondere einem Haarformwerkzeug (13) angeordnet ist.Contact with a tubular tool to be heated, in particular a hair styling tool (13) is arranged.
8. Widerstandsheizelement nach Anspruch 7, dadurch gekenn- zeichnet, dass zur elektrischen Isolierung des Widerstandsheizelementes (1 ) gegenüber dem zu erwärmenden Werkzeug mehrere Lagen einer Polyimid-Folie (15) zwischen der Außenseite des Widerstandsheizelementes (1 ) und der zu erwärmenden Fläche des Werkzeuges angeordnet sind.8. Resistance heating element according to claim 7, characterized in that for the electrical insulation of the resistance heating element (1) relative to the tool to be heated several layers of a polyimide film (15) between the outside of the resistance heating element (1) and the surface to be heated of the tool are arranged.
9. Haarformgerät mit einem beheizten Haarformwerkzeug (13), dadurch gekennzeichnet, dass das Haarformwerkzeug (13) mit einem oder mehreren Widerstandsheizelementen (1 ) nach einem der Ansprüche 1 bis 8 ausgerüstet ist.9. hair styling device with a heated hair styling tool (13), characterized in that the hair styling tool (13) is equipped with one or more resistance heating elements (1) according to one of claims 1 to 8.
10. Haarformgerät nach Anspruch 9, dadurch gekennzeichnet, dass das Haarformgerät ein Lockenstab ist. 10. Hair styling device according to claim 9, characterized in that the hair styling device is a curling iron.
PCT/EP2007/050469 2006-01-18 2007-01-18 Resistance heating element for a hair-styling device and a hair-styling device equipped with said resistance heating element WO2007082903A1 (en)

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EP07703966A EP1973441B1 (en) 2006-01-18 2007-01-18 Resistance heating element for a hair-styling device and a hair-styling device equipped with said resistance heating element
US12/161,299 US20100237057A1 (en) 2006-01-18 2007-01-18 Resistance Heating Element For a Hair Styling Device and a Hair Styling Device Equipped With Said Resistance Heating Element
DE502007006938T DE502007006938D1 (en) 2006-01-18 2007-01-18 RESISTANCE HEATING ELEMENT FOR A HAIR MOLDING DEVICE AND HAIR-FORMING EQUIPMENT THEREWITH

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ES2364710T3 (en) 2011-09-12
DE202006000670U1 (en) 2007-05-31
EP1973441B1 (en) 2011-04-13
US20100237057A1 (en) 2010-09-23
EP1973441A1 (en) 2008-10-01

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