Toilet – Methods – Hair deformation or set
Patent
1996-12-18
1999-01-12
Manahan, Todd E.
Toilet
Methods
Hair deformation or set
132227, 132252, A45D 236
Patent
active
058574700
DESCRIPTION:
BRIEF SUMMARY
This is a continuation of International Application No. PCT/EP96/00938, pending, with an international filing date of Mar. 6, 1996.
This invention relates to a device for the styling and/or drying of in particular wet hair, such as a hair roller, a curling wand or the like, including an exothermic material that is enclosed by a gas-permeable film.
Such a drying element and a method for its use are already known from EP 0 140 380 A2. This printed specification describes, inter alia, a hair roller whose gas-permeable enclosure performs the function of a roller body and holds the desiccant inside. The term gas-permeable enclosure as used in this application is understood to mean a gas-permeable film, a gas-permeable membrane or the like. As desiccant it is proposed to use in particular synthetic zeolites, which are characterized by a sufficiently high thermal and cyclic stability. After use, the drying elements are regenerated in the air by the action of heat and are thus ready to be used again. When water vapor is applied to the hair rollers and to the zeolite enclosed therein, because of the physical bonding of the water vapor the zeolite material emits adsorption heat which is intended to heat and dry the hair.
As practical tests have shown, the known hair roller is not particularly well suited for the drying and/or styling of wet hair. On the one hand, it results in an undesirably long drying period of an hour and more, and on the other hand the amount of heat emitted by the zeolite is not enough to heat the hair to a sufficiently high temperature.
The underlying object of the present invention is, by contrast, to further develop the device embodying the features initially referred to so that the user's hair is dried and/or styled within an acceptable period of time. In particular it is aimed to heat the hair to a temperature of approximately 35.degree. C. or higher and to dry it to a residual moisture content of less than 6 to 10% within a period of less than approximately 45 minutes.
SUMMARY OF THE INVENTION
In a device incorporating the features initially referred to this object is accomplished essentially in that a water-absorbent fabric or the like, for examples a synthetic fiber fabric, is applied to the outer surface of the film at least in certain areas thereof which fabric comes into direct contact with the hair when the device is used. Depending on the type of membrane, the type of carrier fabric and the degree of regeneration of the exothermic material, it is thereby possible to generate temperatures of approximately 50.degree. to 90.degree. C. in the exothermic material, and of approximately 35.degree. to 50.degree. C. in the hair, with the hair being dried within a period of between 30 and 45 minutes, approximately. The mode of operation of the device is as follows:
The wet hair, which is to be dried and/or styled, is surrounded by an atmosphere of water vapor. A high vapor pressure differential develops between the hair and the exothermic material on account of the high adsorption power of the exothermic material inside the device. The water vapor flows in between the fibers of the water-absorbent fabric and via the pores of the gas-permeable film to the exothermic material. The water vapor is bonded physically in the exothermic material, adsorption heat being emitted in the process. The device thus begins with the emission of heat automatically when wet hair is wound onto the hair roller, which in daily use is extremely advantageous. The more water molecules bonded in this process, the greater the amount of heat. Capillary water, that is, water in the liquid phase clinging, for example, to the surface of the wet hair, does not pass through the film because the film's permeability preferably applies only to water in the vapor phase. The heat generated in the exothermic material passes via the film into the fibers of the fabric mainly by thermal conduction. On the other hand, on their side facing the hair, these fibers take up capillary water from the surface of the strands of hair by diff
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Herber Peter
Mothrath Georg
Schmidt Heike
Braum Aktiengesellschaft
Manahan Todd #E.
Podszus Edward S.
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