JPS6041665Y2 - sheet heating element - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a planar heating element, and particularly to a planar heating element suitable for use in a floor heater or the like.

Conventionally, floor heaters have been made by forming grooves in a base material impregnated with a thermosetting resin, mainly made of felt, etc., disposing linear heating elements in the grooves, and polymerizing and bonding the base body and a woven fabric provided above the grooves. was.

However, since it is impregnated with a thermosetting resin, the finished product becomes hard, resulting in poor flexibility and cushioning properties.

This proposal was developed in view of the above points, and is made by needle-punching a first buffer made of a mixture of chemical fibers with a relatively low melting point and a second buffer made of a mixture of chemical fibers with a relatively high melting point. After that, a linear heating element is interposed between the first buffer and the woven fabric, and the chemical fibers having a low melting point are pressed by melting to form the woven fabric, linear heating element, first buffer, and second buffer. It is constructed integrally in the order of the body.

To explain the embodiment, reference numeral 1 is a woven fabric, on the lower surface of which a linear heating element 2 and a linear sensing element 3 are attached in a meandering manner so as not to intersect.

4 is a first buffer material mixed with polyolefin or a polymer thereof, nylon or a chemical fiber having a relatively low melting point of 110° C. or lower, located on the side of the woven fabric 1 on which the heating element 2 is attached; 5 is wool or nylon that is polymerized and fixed by needle punching below the first buffer body 4.
For example, 1 of acrylic, polypropylene, polyester, etc.
The second buffer is a mixture of chemical fibers having a relatively high melting point of 30°C or higher.

Next, regarding the assembly order, first, place the first buffer 4 mixed with a chemical fiber having a low melting point and the second buffer 5 mixed with a chemical fiber having a high melting point, with the first buffer 4 facing upward. Polymerize and fix by needle punching.

Subsequently, a chemical fiber having a low melting point is melted on the side of the woven fabric 1 on which the linear heating element 2 is attached, and the first buffer body 4 is pressed and fixed.

Incidentally, the heating element 2 may be temporarily fixed to the first cushioning element 4, and in short, it is sufficient to have a configuration in which it is interposed between the first cushioning element 4 and the woven fabric 1.

As mentioned above, in this case, a first cushioning body made of a mixture of chemical fibers having a relatively low melting point and a second cushioning body made of a mixture of chemical fibers having a relatively high melting point are fixed and integrated by needle punching, and then A linear heating element is interposed between the first buffer body and the woven fabric, and the chemical fibers having a low melting point are pressed by melting and fixed together. Since the buffer layer is integrated and fixed to the woven fabric, the work process can be simplified.

Furthermore, since the chemical fibers having a low melting point are melted and bonded to the woven fabric, the heating element is not deformed or deteriorated by the temperature of the press.

In particular, since the woven fabric and the buffer are integrated using chemical fibers with a low melting point without using a thermosetting resin, it is possible to achieve the flexibility of the buffer as well as improve the adhesion effect and make it stronger. .

The second cushion provides cushioning properties, which prevents the feet of the warmer from feeling stiff, and prevents melted chemical fibers with a low melting point from adhering to the jig during the above-mentioned pressing process. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the planar heating element of the present invention, and FIG. 2 is a cross-sectional view of the first and second buffer bodies superimposed and fixed. 1... woven fabric, 2... linear heating element, 4...
...First buffer, 5...Second buffer.

Claims (1)

[Scope of utility model registration request] A first buffer made of a mixture of chemical fibers with a relatively low melting point and a second buffer made of a mixture of chemical fibers with a relatively high melting point are fixed by needle punching, and a linear heating element is interposed between them to form a woven fabric. A planar heating element characterized in that a first buffer and a first buffer are integrally fixed together by melting a chemical fiber having a low melting point.