JPH0310331B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a filament for low-temperature heating for thermotherapy that has an electrical resistance obtained by spinning a resin to which a predetermined amount of flaky carbon has been added. This invention relates to a cloth-like heating element.

Conventionally, planar heating elements were made by flattening a mixture of resin and carbon particles to form a thin rectangular sheet, and forming electrodes on two opposing sides of the sheet by heat welding or plating. Something is being offered. However, this product has a relatively large restoring force against bending so that the resin base material does not break due to bending, and therefore cannot be made to adhere sufficiently to a flat or simple cylindrical surface. However, it has the disadvantage that it cannot be brought into sufficient contact with a spherical surface or a curved surface with complex irregularities. For example, when the above-mentioned planar heating element is used as a heat source for thermal therapy that applies heat to the skin surface of the human body, it may be impossible to make it adhere to the skin surface in some places, and it may feel hard to the skin. Because of this, there is a drawback that the human body feels uncomfortable especially when exercising.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to provide extremely flexible
To provide a cloth-like heating element for thermal treatment which has good adhesion to a spherical surface or a curved surface with complicated irregularities and which causes less discomfort when worn.

An embodiment of the present invention will be described below with reference to the drawings. 1 is approximately 1000 denier, and the thickness is approximately
A filament formed to a diameter of 0.4 mm, which is made of heat-resistant polyethylene resin as a base material.
A first chip containing 28 to 30% (weight ratio) flaky carbon, which contains about 40% (weight ratio) flaky carbon in polyethylene resin for monofilament, and a monofilament. A second chip made of only polyethylene resin was prepared, and the first chip and second chip were mixed at a certain ratio and put into a melt spinning machine, and the molten polymer was extruded from the spinneret. It is also subjected to treatments such as stretching and heat treatment, and these treatments are carried out under treatment conditions similar to those for ordinary polyethylene fibers. 2 uses filament 1 as the weft, copper threads 3 which are metal threads on both sides as warp threads, and heat-resistant insulating threads such as polyethylene fibers 4 as the remaining warp threads. A heating cloth used as a cloth-like heating element made of 300mm plain weave, which includes filament 1 as a weft.
There are 2,000 strands arranged per meter of weaving length. When the heating cloth 2 described above is cut to a length of 1 m and 100 V AC is applied to the copper threads 3, 3 on both sides through the lead wires 5, 5, the power consumption is approximately 18 W, and the heat generation temperature of each filament 1 is approximately 18 W. It was 40℃. That is, copper thread 3,
The combined resistance of all filaments 1 located between 3 is
555Ω, the resistance of each filament 1 is 30
1110KΩ per cm, one filament 1
The resistance per meter is 3700kΩ. Furthermore, as a result of the experiment, the tensile strength of filament 1 was approximately 1 Kg/mm ² .

FIG. 4 shows a heat treatment device using a heating cloth 2 as a heat source.The heating cloth 2 is cut into an appropriate size and an insulating sheet 6 made of vinyl or the like, which is highly heat resistant and flexible, is shown in FIG. , 6 are installed so as to sandwich the heating cloth 2, and the peripheries are joined together by welding, and the lead wires 5, 5 are connected to the copper threads 3, 3.
is led out from insulating sheets 6, 6 in a liquid-tight manner, and is brought into close contact with the skin surface of the affected area, and an AC or DC power source of an appropriate voltage is applied between the lead wires 5, 5.

Next, the operation of the above configuration will be explained. When power is applied between lead wires 5 and 5, filament 1
The flaky carbon contained within generates heat and emits far infrared rays. In other words, carbon corresponds to a black body, so when it heats up, it mainly emits far-infrared rays with a wavelength of 3 microns or more, and the wavelength distribution of the infrared rays is very similar to that from sunlight, and the wavelength distribution of the infrared rays is very similar to the infrared rays from sunlight. Penetrates the area and heats the affected area from within. Since the heating cloth 2 is extremely flexible, it has good adhesion to the skin surface and causes very little discomfort when worn.In particular, it can be placed in close contact even with uneven parts of the human body. It becomes possible to irradiate the affected area with infrared rays of uniform intensity by keeping the distance from the heat source constant.

In the above embodiment, since the copper threads 3, 3 are woven into both sides of the heat generating cloth 2, the connection with the lead wires 5, 5 is easy and can be manufactured at a very low cost.

Further, in the above embodiment, the filament 1 was used as the weft yarn, and the polyethylene fiber 4 was used as the warp yarn, but as shown in FIG.
It may be knitted into a cloth-like shape, and in this case as well, electrodes can be formed by knitting copper threads on both sides.

The material of the resin and the type of carbon can be selected as appropriate depending on the purpose of use and the temperature at which heat is generated, and the carbon content is in the range of approximately 20% to 40%, depending on the purpose of use and temperature at which heat is generated. You can set the change. A plurality of filaments 1 may be twisted together, or the filament 1 and another fiber may be twisted together.

As is clear from the above description, the present invention is a cloth-like heating element for thermal treatment that has excellent flexibility, has good adhesion to spherical surfaces or curved surfaces with complex irregularities, and has less discomfort when worn. can be provided.

[Brief explanation of the drawing]

Figures 1 to 4 show one embodiment of the present invention, where Figure 1 is a plan view of the heat generating cloth, Figure 2 is an enlarged plan view of the portion shown in Figure 1, and Figure 3 is the heat generating cloth. Fig. 4 is a longitudinal sectional view of the thermotherapy device, Fig. 5 is an enlarged sectional view of
The figure is a plan view showing another embodiment of the present invention. In the drawings, 1 is a filament, 2 is a heat generating cloth, 3 is a copper thread, 4 is a polyethylene fiber, and 5 is a lead wire.

Claims (1)

[Claims] 1. Polyethylene to which a predetermined amount of carbon has been added is melt-spun to form a conductive filament for generating low-temperature heat for thermal treatment, and this filament is used as a weft, and both ends of the weft are A fabric for thermal treatment, characterized in that it is woven using a metal thread for the corresponding warp thread and an insulating thread for the other warp threads, and the filament is energized through the metal thread to generate heat. heating element. 2 Melt-spun polyethylene with a predetermined amount of carbon added to form a low-temperature heating filament for conductive thermal therapy, and place metal threads for electrodes at positions corresponding to both ends of the knitted surface. A cloth-like heating element for thermal treatment, which is made by knitting the filament.