JP2001085145A - Composite heating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite heating material being excellent in heat conductivity and preventing deflection caused by a difference in thermal expansion or separation of a heating element from a heat equalizing plate, and a snow melting material, a heating building material, heating furniture or the like made from the composite heating material. SOLUTION: A heating element B is not securely fixed to a heat equalizing plate A by an adhesive, screws or the like but is sandwiched in place between e.g. the heat equalizing plate A and a heat insulating material C or between the heat equalizing plate A and another heat equalizing plate A under pressure compressing it. Alternatively, a gap equal to or slightly smaller than the thickness of the heating element B is formed between the heat equalizing plate A and the heat insulating material C or between the heat equalizing plates A, A and the heating element B is fitted into the gap and integrated. Thus, the heating element B is integrated with the heat equalizing plate A without the intervention of an air layer between the heating element B and the heat equalizing plate A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite heating material in which a heating element and a heat equalizing plate are integrated, and a snow melting material, a heating building material and a heating furniture made of the composite heating material.

[0002]

2. Description of the Related Art In a hot water heating system used for heating buildings, a conduit is provided inside a building material such as a roof material, a floor material, and a wall material, and hot water is circulated in the conduit by a pump or the like. I have. Such a hot water heating system requires relatively large-scale facilities for hot water supply and hot water circulation, and requires much time and labor for construction. Also, it is difficult to partially change the hot water heating system according to the partial renovation of the building. Also, maintenance of the boiler and the like is difficult.

[0003] Therefore, a heat-generating material in which a heat-generating element such as a nichrome wire or a sheet-like heat-generating element is attached to the back side of a heat equalizing plate has been developed, and is used as a heat-generating building material for floor heating and wall heating, or as a snow melting material or an indoor heater. It's being used. By the way, since there is a difference in thermal expansion between the soaking plate and the heating element, there is a drawback that when they are integrated, they warp during use (in the case of floor heating) or peel off.

Japanese Patent Application Laid-Open No. 8-185958 discloses a method of interposing a slippery sheet material between a heating element unit and a soaking plate to prevent warpage due to a difference in thermal expansion. . However, this method has the drawback that the adhesion between the heating element and the soaking plate is poor, the thermal conductivity is reduced, and the heating efficiency is reduced.

For the purpose of improving the thermal conductivity of the heating element, a laminated sheet heating element has been developed. However, since the surface of the sheet heating element is made of a laminate material (a resin such as polyethylene), it is easily scratched or broken, so that there is a problem in using the sheet heating element as it is as an indoor heater, floor material, or wall material. .

[0006] A well-known method for roof snow melting is to heat a galvanized sheet by installing a heating element below the galvanized sheet. However, the galvanized sheet is lit by the sun during the summer days,
Surface temperature up to 80 ° C, depending on location and house layout
In winter, it is exposed to harsh weather conditions that drop below freezing to 5 to 40 ° C. In the conventional snow melting installation method,
Due to the construction of the galvanized iron roof, a gap was formed between the tin plate and the heating element, and a gap was formed between the galvanized sheet and the heating element. However, due to the presence of this gap, the heat conductivity from the heating element to the galvanized steel plate is reduced, and as a result, there is a problem that the electricity cost for melting snow increases. Also, depending on the construction method,
There is also a problem that the back surface of the tin is corroded due to the dew condensation generated in the gap.

Japanese Patent Application Laid-Open No. 63-184670 discloses that a heating element obtained by laminating the surface of a sheet heating element is fixed on a roof as snow melting material. However, this method does not use galvanized iron, roof tiles, etc.
If the laminated heating element is used bare, it is easily damaged or damaged, and has problems in terms of waterproof and safety, which is not practical.

[0008]

An object of the present invention is to provide a composite heating material which has excellent thermal conductivity and can eliminate warpage due to a difference in thermal expansion and peeling of a heating element and a soaking plate.
Another object of the present invention is to provide a snow melting material, a heat-generating building material and a heat-generating furniture using the same.

[0009]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, the heating element was not directly joined to the heat equalizing plate, and the heating element and the heat equalizing plate were not directly connected to each other. The present inventors have found that a composite heat generating material integrated without an air layer interposed therebetween solves the problem, and have completed the present invention. In addition, the present inventors have found that this composite heat generating material is useful as a snow melting material, a heat generating building material, and a heat generating furniture. That is, the present invention includes the following inventions.

(1) Without directly joining the heating element to the soaking plate,
In addition, a composite heating material that is integrated without an air layer interposed between the heating element and the soaking plate. (2) The composite heating material according to (1), wherein the heating element is inserted between the heat equalizing plate and the heat insulating material or between the heat equalizing plate and the heat equalizing plate.

(3) The composite heating material according to the above (1), wherein the heating element and the heat equalizing plate are integrated with a substance that absorbs the difference between expansion and contraction. (4) The composite heating material according to any one of the above (1) to (3), wherein the heating element uses a resistance heating paint.

(5) The above (1) to (1), wherein the soaking plate is a metal plate.
(4) The composite heating material according to any one of (1) to (4). (6) The above (1) to wherein the soaking plate is a building material or a furniture material.
(4) The composite heating material according to any one of (1) to (4). (7) A snow melting material comprising the composite heating material according to any one of (1) to (6).

(8) A heat-generating building material or heat-producing furniture comprising the composite heat-generating material according to (6). A roof snow melting material, a road snow melting material, and a pavement snow melting material, comprising the composite heating material according to (7). A roof snow melting material comprising the composite heating material according to (6). Roof snow-melting material that adds functionality to the roof's snow melting by combining heating elements and roofing material.

A slate snow melting material and a tile snow melting material comprising the roof snow melting material described above. The heating furniture according to (8), wherein the composite heating material according to (6) is used for part of the furniture. The heating furniture according to (8), wherein the composite heating material according to (6) is combined with existing furniture. The heat-generating building material according to (8), wherein functions of floor heating, wall heating, and prevention of freezing of water supply are added by combining the heating element and the building material.

The heat-generating building material according to the above (8), which is a floor heating material, a wall heating material, a heating railing, a heating gutter, and a heating tube. The heating furniture according to the above (8), wherein a function is added to the desk, chair, and bed heating by combining the heating element and the furniture. Kotatsu, panel heater, heating desk, heating chair, heating bed,
(8) which is a heating table, a heating cooktop, and a heating rug;
Fever furniture described.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The composite heating material of the present invention is characterized in that the heating element is integrated directly without directly joining the heating element to the heat equalizing plate and without an air layer interposed between the heating element and the heat equalizing plate. Here, the term "joining" as used herein means "fixing two things with a fixing means such as an adhesive or a screw".

The heating element used in the composite heating material of the present invention is not particularly limited as long as it is generally used as a heating element, and specifically, a heating element using a nichrome wire, a resistance heating paint, or the like. And a heating element using a resistance heating paint is preferable. When a heating element using a resistance heating paint is used, it is preferable that the resistance heating paint is uniformly coated.

A heating element using a resistance heating paint has a PTC characteristic and reduces the change with time in electric resistance.
It can be obtained by uniformly coating a heat-resistant and moisture-resistant base fabric or sheet with a resistance heat-generating coating compounded so as to have a function. Examples of the method for uniform coating include a screen printing method, an applicator method, a spray coating method, and an impregnation coating method.

Examples of the resistance heating paint include paints such as polyurethane, polyester, silicone, phenoxy, bisallylnadiimide, polyimide, titanate, and acrylic paint, carbon fiber, carbon black, graphite whisker, expanded graphite, metal powder, and the like. What mixed the electroconductive fillers, such as an electroconductive inorganic powder, is mentioned. The resistance heating section can be freely designed depending on the application and conditions.

When a base fabric or sheet is used for uniformly coating the resistance heating paint, the base fabric or sheet has heat resistance to the temperature generated from the resistance heating paint during use. Nonwoven fabrics, woven fabrics, resin sheets, paper, etc. having properties, and synthetic molded articles using two or more of these. Specific examples include nonwoven fabrics or woven fabrics such as polyester, polyethylene, polypropylene, and fluorine-based resins, resin sheets, and heat-resistant paper.

In the composite heat generating material of the present invention, the heat equalizing plate is not particularly limited as long as it protects the connected heating element and makes the temperature of the heating element uniform at the surface, but is not particularly limited. Are preferable, and a metal plate is particularly preferable. Also,
When used as a building material or a furniture material, a material other than a metal plate may be used.

Examples of the metal plate include a composite material such as a galvanized iron, an aluminum foil, an aluminum plate, an aluminum composite plate, a copper plate, a galvalume steel plate, a stainless steel plate, a rust-proof metal plate, a non-ferrous metal die-cast product, and a perforated aluminum plate. But
Preference is given to tin, aluminum composite, copper and gallium barium steel plates. Examples of the material other than the metal plate include heat-resistant plywood and wood material for flooring, sheet, wallpaper, and the like, and slate, tile, brick, glass, and the like, and heat-resistant plywood, sheet, and wallpaper. Or a slate is preferred.

In the composite heating material of the present invention, the method of integrating the heating element without directly joining the heating element to the soaking plate and without interposing an air layer between the heating element and the soaking plate is as follows. The method is not particularly limited as long as a low air layer can be prevented from being formed between the heating element and the soaking plate, and the thermal conductivity between the heating element and the soaking plate can be increased. Examples thereof include the following methods.

(1) A method in which a heating element is inserted between a heat equalizing plate and a heat insulating material or between a heat equalizing plate and a heat equalizing plate to integrate them. In the method of inserting the heating element between the heat equalizing plate and the heat insulating material or between the heat equalizing plate and the heat equalizing plate, the heating element is joined to the heat equalizing plate with an adhesive, screws, etc. Rather than fixing, for example, by fixing the heating element in a sandwich between the heat equalizing plate and the heat insulating material, or between the heat equalizing plate and the heat equalizing plate, or by pressing the heat equalizing plate and the heat insulating material Between the heat equalizing plates or between the heat equalizing plates, a gap equal to or slightly narrower than the thickness of the heating element is formed, and the heating element is fitted into the gap to be integrated. Glue like this,
Integrates without using screws, etc., and gives the heating element and the heat equalizing plate a degree of freedom. Even if thermal expansion occurs due to heat generation, the heating element and the heat equalizing plate are in close contact but not joined. Therefore, thermal expansion can be performed independently without affecting each other, and warpage and peeling can be prevented. The method of inserting the heating element between the soaking plate and the heat insulating material is, for example, by inserting a thin heating element using a resistance heating paint between the composite material in which the soaking plate and the heat insulating material are integrated. A method of integrating them is given.

The heat insulating material used for the composite heat generating material of the present invention is not particularly limited as long as it uses a material having a small heat transfer property, and examples thereof include hard heat insulating materials and sheets. Hard insulation materials include glass fiber, fine mineral powder (rock wool, etc.), cork, silicone rubber, urethane foam, urethane foam, styrene foam, styrene foam,
Rigid heat insulating materials using materials such as ethylene foam and foamed ethylene are preferred.

Examples of the sheets include a highly adhesive waterproof sheet. Specific applications include, for example, a roof snow melting material in which a thin heating element using a resistance heating paint is inserted between a soaking plate and a heat insulating material, a floor heating material, a wall heating material, and the like. As a method of inserting a heating element between the heat equalizing plates, for example, a method of inserting a thin heating element using a resistance heating paint between the heat equalizing plates and integrating the same can be cited. Specific applications include panel heaters.

In the composite heating material of the present invention, the heat-generating body and the heat equalizing plate are used as a material for absorbing the difference between expansion and contraction, which is used in the method of integrating the same with the material that absorbs the difference between expansion and contraction. It is not particularly limited as long as it is a substance that can be integrated without being peeled off with the soaking plate even when it is repeated, but heat resistance, those having excellent insulating properties are preferable, and furthermore, water resistance,
Those having excellent moisture resistance, durability and thermal conductivity are particularly preferable.

Examples of such substances include polyurethane, synthetic rubber, non-vulcanized butyl rubber, which have heat resistance and insulation properties.
Elastomers such as silicone rubber, urethane, polyisobutylene, chlorinated polyethylene, polypropylene, polyester, polypropylene, PVC elastomer, nylon elastomer, silicone elastomer, resin-based alloy elastomer, etc. , A double-sided tape, a single-sided tape, a sheet, a primer, a sealing material, a latex, and the like.

A specific method for producing a composite heating material is described below, but the composite heating material of the present invention is not limited to this production method. The heating element using the resistance heating paint, the resistance heating paint on the base fabric or sheet, screen printing method, applicator method, spray coating method, impregnation coating method, etc.
It can be obtained by applying a pattern or a whole surface to a uniform thickness and installing the electrode portion.

The composite heating material of the present invention is obtained by inserting a heating element using the above-described resistance heating paint between a heat equalizing plate and a heat insulating material or a heat equalizing plate and integrating them. As a method of integrating, for example, the methods shown in FIGS. 1, 2 and 3 can be exemplified.

In FIGS. 1, 2 and 3, A is a soaking plate, B is a heating element, C is a heat insulating material, and D is an expansion plate.
It is a substance that absorbs the difference in contraction. The composite heating material shown in FIG. 1 is obtained by inserting a heating element between a heat equalizing plate and a heat insulating material, and integrating the heat equalizing plate and the heat insulating material so that an air layer does not enter.

The composite heating material shown in FIG. 2 is obtained by inserting a heating element between heat equalizing plates and integrating the heat equalizing plate and the heat equalizing plate so that an air layer does not enter. The composite heating material shown in FIG. 3 is obtained by integrating a heat equalizing plate and a heating element with a substance that absorbs a difference in expansion and contraction.

The snow melting material comprising the composite heating material of the present invention is such that the above-described composite heating material can be used as a snow melting material for roads and pavements, and a snow melting material for roofs. The soaking plate used as the snow melting material is preferably a metal plate having a high thermal conductivity, but when used as a roof snow melting material, a roof material such as a slate or a tile may be used. Examples of the metal plate include a galvanized steel, an aluminum plate, a stainless steel plate, a steel plate, a galvalume steel plate, and a rustproof metal plate.

When a roof material such as a slate or a tile is used for the soaking plate, it is preferable that the heating element uses a resistance heating paint.
A method of manufacturing by attaching to the back surface of the roofing material and integrating it, or dividing the roofing material in the horizontal direction and inserting a heating element using resistance heating paint and integrating with a material that absorbs the difference between expansion and contraction And the like.

The heat-generating building material of the present invention is such that the above-described composite heat-generating material can be used as a building material. Examples of such a heat-generating building material include a floor heat-generating material, a wall heat-generating material, a heat generating gutter, and the like. A heating tube and the like are included. For example, a wooden flooring material may be used as the heat equalizing plate to form a floor heating material, and the floor heating material may be used as a general floor material.

As a soaking plate, for example, a metal plate such as a steel plate, an aluminum plate, a stainless steel plate, a steel plate, a rust-preventive metal plate or a wooden wall material, or a sheet heat-resistant paper having excellent heat resistance is used as a wall heating material. It can be constructed as a wall material.
The composite heat generating material of the present invention is used as a heat generating gutter, and the eaves gutter used for the purpose of preventing the occurrence of icicles hanging down from the gutter when melting snow accumulated on the roof, or the molten water flowing in the gutter is re-frozen. It can be used for downspouts used for the purpose of preventing pitting. It is preferable to use a heating element using a resistance heating paint.

As the heat generating gutter, a heat generating element using a resistance heat generating paint is attached to the back surface of the heat equalizing plate as a heat equalizing plate, or a heat generating element using a resistive heat generating paint between two sheets. And a heat-generating gutter or the like that can be integrated. The heating pipe is used for the purpose of preventing a water pipe or a water pipe from freezing in winter, and it is preferable to use a heating element using a resistance heating paint as the heating element.

As the heating tube, a heating tube using a resistance heating paint is attached to the surface or inside of the tube, or a heating tube using a resistance heating paint is inserted between two metal plates. Exothermic tubes and the like that can be formed (in tubes). As the heating furniture of the present invention, the use of the composite heating material of the present invention in a part of the furniture for the purpose of removing the cooling sensation when the skin comes into contact with the furniture during use or for the purpose of heating, or the present invention for existing furniture And the like in which the composite heat generating material is combined.

Specifically, a kotatsu with a composite heating material, a panel heater, a heating desk, a heating chair, a heating table,
A heating table, a heating rug, and the like are included. When used as a heating desk or a heating table, the heating portion of the heating furniture is preferably installed such that the leg portion is heated when sitting down. When used in a chair, it is preferable to install it so that the buttocks are heated. When used for a cooking table, it is preferable to set up so that the feet are heated.
Since the temperature of the panel heater becomes high, the soaking plate is preferably a metal plate.

[0040]

EXAMPLES Examples will be described below, but the technical scope of the present invention is not construed as being limited by the following examples. (Production Example 1) A polyethylene / polyester composite sheet is formed by applying a resistive heating paint (main component: carbon black, carbon fiber) to a polyethylene / polyester composite sheet in a uniform thickness by a screen printing method and setting electrodes. Laminated with a thickness of 0.25mm
Was obtained.

Example 1 The heating element obtained in Production Example 1 was placed on a foam insulation material (foamed styrene, 20 mm thick) which is slightly larger than the heating element, and care was taken that the heating element did not adhere. A commercially available adhesive was applied around the heat insulating material.
A commercially available galvanized tin having the same size as the foamed heat insulating material was placed on the upper part of the heating element, and pressed so that an air layer did not remain between the heat equalizing plate and the heat insulating material to obtain a composite heat generating material. An asphalt roofing material was installed underneath.

Example 2 The surface of the heating element obtained in Production Example 1 was uniformly coated with a urethane-based elastomer to a thickness of 0.1 mm, and the upper surface of the heating element coated with this elastomer was It was combined with a commercially available galvanized tin which had been rust-proofed and integrated. Further, a foamed heat insulating material was attached to the lower surface of the integrated heat generating material to obtain a composite heat generating material of the present invention. An asphalt roofing material was installed underneath.

(Comparative Example 1) On the foamed heat insulating material, a material obtained by bonding the upper surface of the heating element obtained in Production Example 1 with a tin using a building material adhesive and a tin is placed and fixed so that the heat insulating material does not come off. Thus, a comparative heating element was manufactured.

(Comparative Example 2) Production Example 1 on foam insulation
Put the heating element and the galvanized sheet obtained in step 2 above, fix the outside so that the galvanized sheet, the heating element and the heat insulating material do not come off, and manufacture a comparative heating element with a gap between the heating element and the galvanized sheet. did.

(Test Example 1) [Heat resistance test] The composite heating materials obtained in Examples 1 and 2 and the comparative heating materials obtained in Comparative Examples 1 and 2 were energized at 300 W / m ² for 4 hours. Was repeated for about one month (total 100 times) after cooling for 4 hours and cooling to room temperature, and the heat resistance was investigated. The heating material was firmly fixed without peeling off ..... ○ The heating material was peeled off .............................. The results are shown in Table 1.

(Test Example 2) [Thermal Conductivity Test] The composite heating material obtained in Examples 1 and 2 and the comparative heating material obtained in Comparative Examples 1 and ² were energized at 200 W / m ² ,
The time until it reached ° C was measured. Table 1 shows the results.

[0047]

[Table 1]

It can be seen that the composite heating material of the present invention has both effects of heat resistance and thermal conductivity. (Example 3) The composite heating material obtained in Example 2 was installed on a roof model (1800 mm x 900 mm, gradient 2.5 dimension) to obtain a snow melting roof model. (Comparative Example 3) The comparative heating material obtained in Comparative Example 2 was installed on a roof model (1800 mm x 900 mm, gradient 2.5 dimension) to obtain a snow melting roof model.

(Test Example 3) [Snow Melting Test] In the snowfall area, using the roof models obtained in Example 3 and Comparative Example 3, the amount of electricity was set to 50, 100, 150, 200, 250,
At 300 W / m ² , a snow melting test and a weather resistance test were performed. The snow melting roof using the comparative heating material obtained in Comparative Example 1
It was not installed due to lack of weather resistance.

On a day when the temperature was 2 ° C. below the freezing point and there was a 23 cm snow cover overnight, electricity was supplied to the roof model, and the snow cover remaining in each test section after the test was measured. In addition, “none” in the test plot indicates that the entire amount of snow was melted without snow. Table 2 shows the results.

[0051]

[Table 2]

The composite heating material of the present invention can efficiently transmit heat to the heat equalizing plate. (Test Example 4) [Condensation condition] From the snow melting roofs of Example 3 and Comparative example 3 used in Test example 3 on the day of the temperature of 2 ° C. and sleet, each heat-generating part was taken out, and dew condensation was formed on the back side of the galvanized iron plate. Investigation was made to see if any occurred. Table 3 shows the results.

[0053]

[Table 3]

In the composite heat generating material of the present invention, since the heat generating element and the heat equalizing plate are combined and integrated to form no gap, no dew condensation occurs. (Test Example 5) [Rain noise reduction status] Using the roof models obtained in Example 3 and Comparative Example 3, the presence or absence of a noise prevention effect during rainfall was measured. Shower of a commercially available sprinkler with a hose, 50m from the position of 5m height under tap water pressure
m / H precipitation was set. The value at 500 mm below the roof surface was measured with an NL04 sound level meter manufactured by Rion Co., Ltd. Table 4 shows the results.

[0055]

[Table 4]

The composite heat-generating material of the present invention has a sound-proofing effect because the heat-generating element, the heat equalizing plate and the heat-insulating material are combined and integrated to form a structure that is hardly vibrated and absorbs rain sounds. . (Example 4) [Production of heater] The surface of the heating element obtained in Production Example 1 was uniformly coated with a urethane-based elastomer so as to have a thickness of 0.1 mm, and the upper surface of the coated heating element was commercially available. It was combined with an aluminum plate and integrated. Further, a commercially available hard foam insulation material of 20 mm was bonded to and integrated with the lower surface of the integrated heating element to produce a single-sided heater. This heater can be used as a heating part of a panel heater.

(Example 5) [Production of floor heating material] The surface of the heating element obtained in Production Example 1 was uniformly coated with a urethane-based elastomer to a thickness of 0.1 mm.
The upper surface of the coated heating element was bonded to and integrated with a commercially available flooring material for flooring. Further, a foam heat insulating material was attached to the lower surface of the integrated heat generating material to produce a floor heat generating material.

(Example 6) [Manufacture of heating gutter] A sheet heating element (120 mm x 800 m) was placed inside a commercially available rain gutter made of tin (diameter 100 mm x 900 mm: semicircular shape).
m) was uniformly coated with a urethane-based elastomer so that both surfaces had a thickness of 0.1 mm, and the same rain gutter was placed on the upper surface thereof to be integrated to obtain a heat generating gutter having a sandwich structure. (Example 7) [Manufacture of heat generating sitting table] The heat insulating material portion of the single-sided heater manufactured in Example 4 was bonded to the lower part of a commercially available sitting table (kotatsu) to manufacture a heat generating sitting table.

[0059]

The composite heating material of the present invention has a high thermal conductivity because it is integrated without interposing an air layer between the heating element and the heat equalizing plate. It is possible to prevent peeling of the heating element and the soaking plate.

The composite exothermic material of the present invention provides a significant increase in strength and flexibility by uniformly coating the exothermic body and the soaking plate with a substance that absorbs expansion and contraction differences. Water resistance, moisture resistance, durability Addition of electrical properties such as insulation. Expansion of materials with different expansion and contraction differences (thermal expansion coefficient) due to heat.
The difference in shrinkage was absorbed, enabling the integration of the lamination.

Since the composite heating material using the resistance heating paint has flexibility, it can be integrated with a heat equalizing plate having a curved surface. For example, it can be integrated with a roof tile. The snow-melting material of the present invention has excellent thermal conductivity because no gap is formed between the heat equalizing plate and the heating element, and prevents corrosion of the heat equalizing plate because there is no fear of dew condensation occurring in the gap. The durability of the heating element is improved.

In a snowy country, a tin roof is often used, but since the snow melting material of the present invention uses a heat insulating material on the back surface, the sound of rain during rainfall is quieter than that of a normal construction zinc roof. . Further, since the composite heating material of the present invention has a simplified process as compared with the conventional snow melting material, it has good workability and can be installed in a short time.

In the heat-generating building material and heat-producing furniture of the present invention, since the heat equalizing plate and the heat generating body are integrated, there is no problem that the heat equalizing plate is warped due to repeated heating, and the heat conductivity is also excellent. . The floor heating material made of the heat-generating building material of the present invention is excellent in thermal conductivity and floor impact sound insulation because the flooring material and the heating element are integrated and there is no gap between the heating element.

Heat-generating building materials and heat-generating furniture made of a composite heat-generating material using a resistance heat-generating paint can provide a far-infrared effect.
Mild and soft warmth is obtained. Since the composite heating material using the resistance heating paint is a lightweight sheet and can be designed to any size, it can be attached to a favorite place such as a study desk, table, cooking table, etc., which is used, and far infrared It can be used as an effective mild heating element and is economical.

[Brief description of the drawings]

FIG. 1 is a sectional view of a composite heating element in which a heating element is inserted between a heat equalizing plate and a heat insulating material to be integrated.

FIG. 2 is a cross-sectional view of a composite heating element in which a heating element is inserted between heat equalizing plates and integrated.

FIG. 3 is a cross-sectional view of a composite heating element in which a heat equalizing plate and a heating element are integrated with a substance that absorbs a difference between expansion and contraction.

[Explanation of symbols]

 A: soaking plate B: heating element C: heat insulating material D: substance that absorbs expansion and contraction differences

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tamio Sasakawa 3 Enokicho, Niigata City, Niigata Prefecture Inside Corp Engineering Co., Ltd. (72) Inventor Takashi Furuzawa 23-3 Ichibancho, Chiyoda-ku, Tokyo Corp Chemical Co., Ltd. (72) Inventor Seinosuke Ando 23-3 Ichibancho, Chiyoda-ku, Tokyo F-term (reference) 2D051 GB02 3K034 AA06 AA16 BA08 BA14 BA20 BB08 BB14 BB17 BC05 BC12 FA13 FA36 HA02 HA08 HA09 HA10 JA10

Claims (8)

[Claims] 1. A composite heating material in which a heating element is not directly joined to a heat equalizing plate and integrated without an air layer interposed between the heating element and the heat equalizing plate. 2. The composite heating material according to claim 1, wherein the heating element is inserted between the heat equalizing plate and the heat insulating material or between the heat equalizing plate and the heat equalizing plate. 3. The composite heating material according to claim 1, wherein the heating element and the heat equalizing plate are integrated with a substance that absorbs a difference between expansion and contraction. 4. The composite heating material according to claim 1, wherein the heating element uses a resistance heating paint. 5. The composite heating material according to claim 1, wherein the soaking plate is a metal plate. 6. The heat equalizing plate is a building material or a furniture material.
5. The composite heat generating material according to any one of items 4 to 4. 7. A snow melting material comprising the composite heating material according to claim 1. 8. A heat-generating building material or heat-producing furniture comprising the composite heat-generating material according to claim 6.