CURLING IRONS

Abstract: Curling tongs having a heating rod with a ceramic (eg Zircon) surface which emits infrared rays of 5-10 µm. Hair absorbs these wavelengths easily so the tempera­ ture of the rod need not exceed 150°C.

Description: BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to the curling irons used to correct a permanent wave or fuzzy hair, or to set hair. Description of the Prior Art In the past, in the technique for forming a permanent wave on the hair by the curling irons, a moistening permanent liquid is used, and the wet hair is rolled round the rod while the surface temperature of the rod of the curling irons is heated to a high temperature from 200°C to 260°C to form a permanent wave. The above-described system is shorter in working time than that of cold permanent and electric permanent and is durable in hair style, as merits, whereas the hair is likely damaged, as demerits. That is, in this system, the hair is formed into a permanent wave while heating the surface temperature of the rod to a high level from 200°C to 260°C, and therefore the hair becomes covered with blisters, burned off, inflated or brittle, as demerits. These demerits can be solved by lowering the surface temperature of the rod to a level from 100°C to 150°C at which the hair is not damaged but in the range of temperature as described, it is not possible to form a permanent wave on the hair unless additional time is given. That is, the hair comprises the uppermost surface formed from an epidermis, the inside formed from a skin and the center formed from the medulla. A portion to which permanent wave is applied is the portion called the skin. However, an outer shell layer poor in heat transfer called the epidemis is present on the surface of the skin, and therefore, when the surface temperature of the rod is lowered to 100°C to 150°C, heat is not well transmitted to the skin in a short period of time. With the above-described arrangement, even if the surface temperature of the rod is lowered to 100°C to 150°C, the far infrared rays of 5 to 10 µm radiated from the far infrared ray radiation layer are directly absorbed by the hair skin to provide for efficient heating, and the correction of permanent wave and fuzzy hair, hair setting and the like may be achieved efficiently in a short period of time as in prior art. To this end, the surface of the rod encasing therein a heating member is principally formed of a material for radiation of far infrared rays which emits the wavelength of 5 to 10 µm as well as prevention of the hari from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of curling irons in accordance with the present invention; FIG. 2 is a longitudinal sectional view of the rod thereof; FIG. 3 is a perspective view of an embodiment of the rod; FIG. 4 is a perspective view of a further embodiment of the curling irons; and FIG. 5 is a perspective view of the rod according to another embodiment. In the drawings, reference numeral 2 designates a rod; 5, a heating member; and 6, a far infrared ray radiation layer. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, one embodiment of the present invention will be described with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 designates a glove for nipping the hair. Reference numeral 2 designates a cylidrical rod provided opposedly of the glove 1, which is formed from a good heat conductor such as aluminum. The rod 2 comprises a rod case 4 provided with a groove 3 for providing for a flow of waves of the hair on the surface, and a heating member 5 encased in the rod case 4, the rod case 4 being applied on the surface thereof with a far infrared ray radition layer 6. This layer 6 is formed principally of ceramics which emits a wavelength of 5 to 10 µm, for example, such as alumina, zircon or zircon and magnetite. The layer 6 is further subjected to surfacing treatment by 80 nickel - 20 chrome or 80 nickel - 20 alumi or the like so as to withstand chemicals such as a permanent wave liquid, thus enhancing anti-corrosion and heat resistance. A fixed handle 7 receives therein a power source cord 8, and the rod 2 is secured to the end thereof. A movable handle 9 is supported on the fixed handle 7, and the glove 1 is secured to the end thereof. FIG. 3 shows another embodiment of the present invention, in which the rod 2 is formed into a hexagonal shape, and the glove 1 is adjusted to said shape. This rod may be of various shapes such as a square tubular shape, a semic-cylindrical shape and the like other than that as described above. FIGS. 4 and 5 show still another embodiments of the present invention, in which rods 2, 2 are secured to both handles 7, 9 each encasing a heating member therein. In FIG. 5, tooth-forms 10 meshed with each other are formed in opposed surfaces of the rods 2,2. It is needless to say in these embodiments that the surfaces of the rods 2, 2 are applied with far infrared ray radiation layers which principally emit a wavelength of 5 to 10 µm similarly to the first-mentioned embodiment. In the above-described structure, in use, the heating member 5 is energized, and both the handles 7, 9 are operated so that the hair is nipped between the glove 1 and the rod 2 or between the rods 2, 2, or rolled directly about the rod 2 to effect correction of a permanent wave or fuzzy hair, hair setting and the like. The hair skin to which permanent wave is applied principally comprises a protein component, of which main absorbing wavelength is in the range of from 5 to 10 µm, and the far infrared rays of the same wavelength band radiated from the far infrared ray radiation layer 6 of the rod 2 are effectively absorbed by the hair skin to heat the hair. Accordingly, it is possible to lower the surface tempeature of the rod 2 to a level of 100°C to 150°C at which the hair is not damaged. With this, permanent wave, correction of fuzzy hair, hair setting and the like can be performed in a short period of working time as in prior art. As described above, in the present invention, it is possible to lower the surface temperature of the rod to a level from 100°C to 150°C at which hair is not damaged by rolling the hair round the rod for radiating the far infrared rays of 5 to 10 µm or by nipping the hair by means of the glove or the like. Also, it is possible to perform the permanent wave, correction of fuzzy hair, hair setting and the like efficiently in a short period of working time as in prior art. It is to be noted that not only the far infrared ray radiation layer is provided on the surface of the rod but the rod case 4 itself can be formed of a far infrared ray radiation material such as alumina, zircon or the like.

Claims: 1. A curling irons in which the hair is rolled about or nipped in a rod having a heating member encased therein to perform a permanent wave, correction of fuzzy hair, hair setting and the like, characterized in that a far infrared ray radiation surface of said rod is formed of a material for radiating infrared rays principally having a wavelength of 5 to 10 µm. 2. The curling irons as set forth in Claim 1 wherein the surface of the rod is coated with a far infrared ray radiation layer principally emitting a wavelength of 5 to 10 µm. 3. The curling irons as set forth in Claim 2, wherein the surface of the rod is formed with an anti-corrosive layer, and a far infrared ray radiation layer is provided on said anti-corrosive layer. 4. The curling irons as set forth in Claim 1, wherein said far infrared ray radiation material comprises ceramics whose main component is alumina. 5. The curling irons as set forth in Claim 1, wherein said far infrared ray radiation material comprises ceramics whose main component is zircon.

Inventors: MINAGAWA, HARUO, MINAGAWA, TOSHIYUKI, TAKIMAE, TOYOSAKU
Applicants: TAKIMAE, TOYOSAKU, TOYO ELECTRIC INDUSTRY CO., LTD.
Application year: 1986
Main classification: A45D1
IPC codes: A45D1