KR101108219B1 - Method for manufacturing planar heating element using carbon equipped with insulation and earth function - Google Patents

Abstract

PURPOSE: A method for manufacturing a surface heating element is provided to shield an electromagnetic wave induced in a heating element by coating a specific liquefied insulation. CONSTITUTION: A base sheet is made with carbon micro fiber mixed solutions. Carbon powder mixed solutions are made. A conductive polymer layer is formed on the base sheet. A surface heating element is made by driving and coating the carbon powder mixed solutions. The surface heating element is cut. Liquefied insulation polymer is immersed or coated in one side of the surface heating element. A silver electrode wire is installed by coating and drying the silver powder mixed solutions. A copper electrode wire is compressed to the silver electrode wire. An insulation layer is formed on the surface heating element. A copper ground wire is attached to the insulation layer and is sealed and fixed with silver foil.

Description

METHODS FOR MANUFACTURING PLANAR HEATING ELEMENT USING CARBON EQUIPPED WITH INSULATION AND EARTH FUNCTION}

The present invention relates to a planar heating element manufacturing method and a planar heating element, and more specifically, to improve the electrical use efficiency through improved insulation function, and to enable the complete blocking and grounding of electromagnetic waves generated in the heating element It relates to a planar heating element manufacturing method and a planar heating element produced by the insulation and grounding function.

In recent years, carbon-based heating elements developed from carbon are used in residential heating such as apartments, houses, commercial offices such as offices, shopping malls, industrial heating such as cars, warehouses, various tents, and various industrial heating devices, and plastic tents and agricultural product drying facilities. It is used in various fields such as agricultural equipment, roads and stops, runways, bridges, snow making, ice-breaking, rest, and cold insulation.

The conventional manufacturing method of the planar heating element is to mix the carbon powder and the binder on the PET (polyester) film and print in a predetermined shape, followed by the process of insulation bonding using the polyester film and EVA as a thermal adhesive.

However, the planar heating element of the conventional method described above has a limited heat generation temperature (in theory, the heat generation dimension is about 83 ° C. when the anode distance is 300 to 500 mm), and the actual temperature and the use are limited, and the material of the insulating film used is also limited. In addition, when heat is generated above a predetermined temperature (about 65 ° C.), the EVA of the insulating film swells due to heat, which causes a fatal defect in the appearance and function of the planar heating element. Thus, a limited heating element having a commercial temperature of 60 ° C. or less can be manufactured. There was no choice but to.

In addition, such a planar heating element is sensitive to wrinkling and has a potential to lead to a non-conduction state and a fire caused by an electric concentration phenomenon along the wrinkled interface.

In addition, the conventional planar heating element uses only PET to make a pattern arranged regularly, so that the electric insulation and fatal defects caused by wrinkles during use, while maintaining a uniform pattern arrangement while maintaining a uniform pattern of adhesive material and manufacturing There is a need to develop skills.

In order to solve the problems of the existing planar heating element as described above, the applicant has invented the Republic of Korea Patent No. 10-0973593.

However, in the case of the registered patent, because the structure of the heat insulation and the grounding function of the planar heating element is not considered, the heat generating ability is lowered or the reason why the removal is not easy when the electromagnetic wave is generated, the present applicant improves the thermal insulation and grounding ability of such a registered patent Let's do it.

The present invention has been made to solve the above problems of the prior art, a planar heating element manufacturing method having a thermal insulation and a grounding function that can improve the electricity use efficiency and stability through excellent heat insulating ability and electromagnetic wave removing ability and manufactured by The purpose is to provide a planar heating element.

In order to achieve the above object, the present invention, the first step of producing a base paper with a carbon microfiber mixed solution mixed with a carbon microfiber, paper pulp, a water-soluble binder and water; A second step of preparing a carbon powder mixture by mixing carbon powder, conductive polymer, water soluble binder, and water; Forming a conductive polymer layer on one or both surfaces of the base sheet; A fourth step of manufacturing a planar heating element in which the carbon powder mixed layer is formed by impregnating or applying the carbon powder mixed liquid to one or both surfaces of the base paper on which the conductive polymer layer is formed; A fifth step of cutting the planar heating element in which the carbon powder mixture layer is formed to have a predetermined width and length; A sixth step of impregnating or applying a liquid insulating polymer to one surface of the cut surface heating element, wherein the insulating polymer layer is formed to face the conductive polymer layer based on the substrate when the conductive polymer layer is formed on one surface of the substrate; A seventh step of applying a silver powder mixture consisting of a silver powder, a water-soluble binder and a diluent to both sides of the carbon powder mixed layer of the planar heating element, and then drying the silver powder; An eighth step of compressing the copper foil electrode line coated on the bottom of the conductive adhesive or adhesive based on the conductive polymer on the silver electrode line; A ninth step of melting and applying an insulating material to a planar heating element provided with the silver electrode line and the copper foil electrode line and drying the same to form an insulating layer; And a tenth step of attaching a copper foil ground wire coated with a conductive adhesive or an adhesive based on a conductive polymer to one or both surfaces of the insulating layer, and then sealing and fixing the copper foil ground wire with silver foil.

As described above, the planar heating element manufacturing method and the planar heating element prepared by the insulation and grounding function according to the present invention is less thickness, lower weight than conventional insulation materials such as styrofoam vulnerable to workability and durability due to volume increase By applying a special heat insulating material having a three times or more thermal insulation performance compared to the existing one to ensure excellent thermal insulation performance, while the electromagnetic wave organic to the heating element to be completely shielded and removed through the silver foil and the copper foil ground wire that is finished thereby. Can be.

1 is a flow chart illustrating a planar heating element manufacturing method having a heat insulating and grounding function according to the present invention.
Figure 2a to 2c is a cross-sectional view showing a hierarchical structure of the planar heating element with heat insulation and grounding function according to the present invention.
Figure 3 is a plan view showing the arrangement state of the silver foil and copper foil ground wire of the surface heating element with insulation and grounding function according to the present invention.
Figure 4 is a cross-sectional view showing a hierarchical structure of the planar heating element with insulation and grounding function according to the present invention having an antistatic layer.

Hereinafter, with reference to the drawings will be described a planar heating element manufacturing method and a planar heating element prepared by the heat insulation and grounding function according to the present invention.

1 is a flow chart illustrating a method of manufacturing a planar heating element with insulation and grounding function according to the present invention.

The method of manufacturing a planar heating element with thermal insulation and grounding according to the present invention basically comprises a first step of preparing a base paper with a carbon microfiber mixed solution, a second step of preparing a carbon powder mixed solution, and forming a conductive polymer layer on the base paper. A third step, a fourth step of preparing a planar heating element that is dried after impregnating or applying a carbon powder mixture solution to a base paper on which the conductive polymer layer is formed, a fifth step of cutting the planar heating element, and a liquid insulating property on one surface of the planar heating element A sixth step of impregnating or applying the polymer, a seventh step of applying the silver powder mixture solution to the planar heating element and drying it to install a silver electrode line, an eighth step of compressing the copper foil electrode line onto the silver electrode line, and a planar heating element A ninth step of forming an insulating layer and a tenth step of attaching a copper foil ground wire to the insulating layer, and then sealing and fixing with silver foil.

<The first step-background paper production>

Looking at the first step of the base paper manufacturing process of the present invention, 5 ~ 25mm in length, 20 ~ 100㎛ thick carbon microfiber, paper pulp, water-soluble binder and water, or carbon microfiber, polyester-based phosphorus, A paper microfiber mixed solution is prepared by mixing paper pulp, a water-soluble binder, and water.

Herein, the content of water may be appropriately blended to dilute the mixed solution, and the carbon microfiber mixed solution may further include a functional inorganic material in which at least one or more of powdered tourmaline and stellate ore is mixed.

Then, the base paper is prepared by applying a carbon microfiber mixed solution on the base fabric for producing the base paper. Through this process it is possible to produce a carbon microfiber heating element having a width of 30 ~ 240cm or more 30 ~ 240cm.

Looking at the base paper manufacturing process as described above in more detail, the carbon microfiber mixed solution is put in a heated culture tank, and the carbon microfiber mixed solution is stirred through a rotary blade capable of rotating in the forward and reverse directions installed in the culture tank.

Then, the carbon microfiber mixed liquid is sprayed on the blanket through the injection device at a certain amount of injection ratio, and the base of the carbon microfiber has a basic resistance as a planar heating element by using a conventional combination, gravure, and strip bar method for the orientation and culture of the carbon microfiber. Make it a conductive material.

Then, the base paper mixed with carbon microfiber is removed by removing the moisture of the base paper with decompressed air through the air pressure reducing device, drying the base paper with a heat dryer, and then winding it to a certain amount to remove foreign substances on both sides of the base paper. Is completed.

<Step 2-Preparation of Carbon Powder Mixture>

Looking at the carbon powder mixture preparation process of the second step of the present invention, by mixing any one or more selected from acetylene-based, pitch-based, pen-based, palm-based carbon powder in an appropriate ratio of 0.1 to 50% of the carbon powder and To prepare a carbon powder mixture, 0.2 to 30% by weight of the conductive polymer and 0.1 to 40% by weight of the water-soluble binder.

Wherein at least one of the tourmaline and the ore to the carbon powder mixture liquid by 0.1 to 45% by weight based on the weight can be further mixed as a functional inorganic material.

On the other hand, in the conventional planar heating element, when the carbon powder is fixed by using an organic binder, toxic volatile substances (MEK, etc.) are used. Therefore, the effect on air pollution and the working environment is great, and the residual volatilization amount of the binder and the diluent is 5% or less. Swelling does not cause swelling or cracking of the carbon powder mixture layer due to the rise of the temperature of the heating element, but it is difficult to maintain the volatile residue due to the difficulty of drying in a short time in the manufacturing process.

Therefore, the present invention can simplify and quantify the environmental problem and the process of maintaining the volatilization residual amount by using 100% water-soluble binder and water in order to solve the above problems, so that the resistance of the carbon powder mixture is in the range of 400 to 600 Ω. Although it was used inside, it can be implemented freely within the range of 30 ~ 5800Ω, and thus it is possible to construct various heating elements beyond the limit range of the width of the heating element and the heating temperature.

<Third Step-Forming Conductive Polymer Layer>

Looking at the conductive polymer layer forming process of the third step of the present invention, the conductive polymer layer is formed by applying a conductive polymer mixed with at least one selected from aniline, pyrrole, and diphene to one or both sides of the base.

<4th step-planar heating element manufacturing>

Looking at the planar heating element manufacturing process of the fourth step of the present invention, impregnated or coated with the carbon powder mixture on one or both sides of the base paper on which the conductive polymer layer is formed, and then dried to form a carbon powder mixed layer to produce a planar heating element.

The reason for forming the carbon powder mixed layer is to reduce the temperature variation of the planar heating element caused by uneven distribution or entanglement of carbon microfibers, to prevent the sudden partial temperature rise due to the reduction of local resistance, and to use the fine polymer of the carbon powder mixed layer by using a conductive polymer. While filling the voids to provide uniformity of temperature, while increasing the load capacity for the concentrated load acting from the outside, maximizing the energy efficiency per unit area to form a heating element with low power consumption.

And conventional planar heating element has been used to print the pattern by silk printing on the PET film or the substrate mixed with carbon filament as a heating element, in the present invention, impregnated method, air spray method, gravure printing on the substrate mixed with carbon microfiber The carbon powder mixture is coated on the ground using a method or the like.

Here, according to the impregnation coating method, by controlling the thickness of the carbon powder mixture is adjusted by adjusting the resistance of the carbon powder mixture and the interval between the pressing roller during the impregnation process, at the same time it is possible to coat the end surface or both sides of the carbon microfiber substrate, the surface heating element The heating temperature and width of can be implemented freely.

In addition, according to the air spray coating method, by varying the composition and resistance value of the carbon powder mixture can give a difference in both sides heating temperature and control the amount of injection can be realized freely the temperature and width of the planar heating element.

In addition, according to the gravure printing coating method, by controlling the viscosity and the resistance of the carbon powder mixture, it is possible to implement a variety of colors by the difference in saturation and to realize the beauty of the appearance and to realize the temperature and width of the planar heating element freely.

Therefore, it is possible to realize various resistance values by combining the content of carbon microfiber of the base paper, the content of the conductive polymer and the carbon powder mixture, so that the width of the planar heating element can be widened, and even the planar heating element of the same width can generate different temperatures. In addition, by forming a multilayer structure through which electricity can be supplied, it is possible to manufacture a planar heating element having excellent versatility which does not cause a problem due to short circuit even when wrinkled or bent.

When conventional carbon powder is coated on a PET film with a certain thickness, an organic diluent (mainly MEK or acetone) is mixed with a binder and a carbon powder and rapidly dried after application, so that a crack occurs in the drying process or insufficient drying of the diluent. Due to this, the insulating film peels or swells from the planar heating element, thereby acting as a factor that causes a loss of function. In this process, it is possible to induce sufficient drying, and even dry moisture can be completely solved by cracking or peeling phenomenon due to poor drying by allowing continuous drying after residual drying.

In addition, it is possible to realize the required change range of resistance by 30 ~ 5800Ω by continuous supply of mechanically mixed carbon powder mixture liquid, and it is possible to generate various temperatures in a planar heating element of a certain width, and the planar heating element of various widths generates a constant temperature. It can be made, it can be configured a heating element of various DC, AC voltage.

<The fifth phase-planar heating element foundation>

In the fifth step of the present invention, the step of cutting the planar heating element on which the carbon powder mixture layer is formed into a required width and length is performed.

<Sixth Step-Forming Insulating Polymer Layer>

In the process of forming a heat insulating polymer layer, the sixth step of the present invention impregnates or applies a liquid heat insulating polymer to one side of the cut surface heating element, and impregnates or applies the heat insulating polymer to any surface when the conductive polymer layer is formed on both sides of the substrate. Although it may be sufficient, when the conductive polymer layer is formed on one surface of the base paper, it is preferable that the insulating polymer layer is formed to face the conductive polymer layer based on the base paper.

The heat insulating polymer is prepared by mixing porous silica, a polymer adhesive (for example, acrylic resin, α -olefin, urethane resin, epoxy resin), and functional additives (hot melt and urethane resin having excellent heat resistance and durability). It is prepared by adding and mixing 5-20 parts by weight of the polymer adhesive and 0.1-5.0 parts by weight of the functional additive with respect to 100 parts by weight of silica.

According to such a heat insulating polymer layer, the processing cost is low, but the workability is excellent with low thickness and low weight than the existing method, and with the extremely low conductivity of 0.01W / mK or less, the heat insulating performance can be more than three times that of the existing heat insulating material, and 3 times the density (0.003 ~ 0.8g / cm ³ ) using a gravure, flexo, etc. printing machine or corta, the application amount so that the thermal insulation efficiency is 10 ~ 99% depending on the low-temperature and high-temperature heating element from 2㎛ ~ 10,000㎛ It can be adjusted to overcome the problems such as increase in volume, poor workability and durability due to the method of attaching the insulation material, such as conventional styrofoam.

<Step 7-Silver Electrode Line Installation>

Looking at the installation process of the silver electrode line, the seventh step of the present invention, a water-soluble binder and diluent such as silver powder, silicon, urethane, urepoxy (urethane + epoxy resin mixture) in a planar heating element cut to a certain width and length The silver powder mixed solution prepared by mixing together is buried in a rubber or stainless steel printing roller engraved with electrode shape, printed on a planar heating element, and dried to install a silver electrode wire having a width of 1 to 25 mm.

Here, it is preferable to continuously stir the mixed liquid until the silver powder mixed liquid is buried in the printing roller, which is to prevent the arc phenomenon that may occur due to the concentration of electricity at a local part of the electrode.

In addition, continuous stirring of the silver powder mixture liquid compensates for the electrical loss of the copper foil electrode line 1 and compensates the current flow rate, thereby minimizing heat generation due to self-resistance generated on the electrode and extending the life. It is to be in close contact with the planar heating element to prevent the occurrence of arc phenomenon.

<Step 8-Installation of Copper Foil Electrode Line>

Looking at the installation process of the copper foil electrode line, the eighth step of the present invention, the rolled copper foil having a thickness of 25 ~ 50㎛ treated with a conductive adhesive or adhesive based on a conductive polymer (aniline-based, pyrrole-based, diopenne-based) 5 ~ 5 ~ 5 ~ After laser cutting to a width of 25mm, it is installed so as to overlap on the silver electrode line or spaced at regular intervals of about 2 ~ 10mm and then crimped to install the copper foil electrode line (1).

In more detail, a conductive adhesive or an adhesive based on a conductive polymer (aniline-based, pyrrole-based, or diopen-based) is coated on the bottom surface (surface in contact with the silver electrode wire) of the rolled copper foil to a thickness of 4 to 30 μm. After that, the copper foil electrode line 1 having the conductive adhesive or the adhesive is treated by laser-cutting the copper foil by winding in a roll state while the conductive adhesive or the adhesive is not bonded to each other with the release films PE and LDPE. After overlapping the silver electrode lines or spaced at regular intervals, the copper foil electrode line (1) is crimped and installed.

By crimping the copper foil electrode line 1 on the silver electrode line as described above, it is possible to prevent the failure of the arc discharge type electrode due to the increase in the interface conduction resistance and the electric concentration, and the unitary length of the planar heating element capable of conducting electricity to 15 to 30 m. It can be used without temperature deviation between the inlet and the end. In addition, by forming the form of a multi-electrode wire that can prevent the heat generation of the electrode wire due to overload in the electrode, it prevents the arc phenomenon caused by partial breakage of the electrode wire and the increase in the interface conduction resistance with the planar heating element, and the arc phenomenon caused by the lifting. It is possible to minimize the stability of the planar heating element and the ringing of electromagnetic waves in the electrode line, and to extend the life of the planar heating element.

<Step 9-Insulation Layer Formation>

Looking at the insulating layer forming process of the ninth step of the present invention, after applying the insulating solution in which the insulating material is fused to the planar heating element in which the copper foil electrode line 1 is installed, it is insulated on the planar heating element by pressing with an insulating film or coating and injecting with an insulating solution To form a layer.

However, in the conventional planar heating element, the carbon powder and the binder are mixed on the polyester film and printed in a predetermined shape, followed by the process of insulation bonding to the planar heating element using the polyester film and the EVA, which is a heat adhesive. It is not only limited to the variety of uses because it cannot escape the limit of temperature implementation (theoretical value of 83 ℃), and also limited to the material of insulating film. The swelling causes a fatal defect in the appearance and performance of the planar heating element, but can not only produce a limited planar heating element, the present invention is differentiated from the conventional planar heating element and the adhesive method and the adhesive material portion through the insulating material coating process.

In conventional planar heating elements, the insulating layer and the insulating film do not form a multi-layered structure, but rather a film having a certain physical property (typically a thermal laminate type insulating film coated with a thermal adhesive on a PET film) is closely adhered to the planar heating element at a constant temperature and pressure. By increasing its structural strength, waterproofing, and durability, the conventional method is simple and inexpensive to manufacture. However, when the planar heating element generates heat above a certain temperature of 60 to 80 ° C., the EVA used as a film adhesive melts as the volume melts. Continued expansion causes the insulation film of the planar heating element to swell and cause fatal defects.

The present invention is to prevent such fatal defects in advance, and to replace the existing film adhesive EVA for the construction of a product that can be used safely by consumers, insulation material HDPE, LDPE, LLDPE, VLDPE, PP, PEN, PET, flame retardant PET, PVC, tarpaulin, flame retardant PVC, PU, TPU, PI, epoxy impregnated glass fiber woven fabric (prepreg), phenol impregnated glass fiber woven fabric, silicon, heat-resistant silicone, etc. Then, it is pushed to a constant pressure and applied to the planar heating element, and then the insulation film (HDPE, LDPE, LLDPE, VLDPE, PP, PEN, PET, flame retardant PET, PVC, flame retardant PVC, PU, TPU, PI, silicone, By heat-gluing the heat-resistant silicon directly to the planar heating element, it is possible to greatly improve durability and waterproofness as well as forming a product range of free temperature beyond the temperature limit of the existing adhesive.

Accordingly, the present invention significantly improved the temperature limit using the composite carbon heating element, so that the heating element with a thickness of 0.15 to 0.8 mm can be implemented at various temperatures. By selectively using the insulating layer to form a heating element of various temperatures can be completed.

For example, in the heating element below 100 ° C, an insulation film is formed of a composite multilayer film made of PET material, a composite multilayer film made of PVC material, and a composite multilayer film made of PEN material, and PVC is not used at all on the T-die. By dissolving PET, PE, and urethane resins and using PVC, PET, PE, and urethane resins as adhesives, it is possible to control the amount of air that can occur during the heat-resistance and thermocompression film lamination bonding. In addition, it is possible to diversify the use and guarantee the life of the product by fundamentally eliminating the distortion, distortion, swelling deformation of the planar heating element due to the temperature rise and the loss of function and arcing of the heating element.

PEN composite multilayer film or PREPREG (material impregnated with phenolic resin or epoxy resin) is used as insulation film for heating elements below 70 ~ 180 ℃ and PVC-based resin, PE-based resin or urethane is used for T-die. The epoxy resin or polyurethane resin is melted and used as an adhesive, while the polyimide film (PI) is used as the insulating film and the polyimide is used as the adhesive for heating elements of 150 to 300 ° C or lower.

In addition, in the heating element of 200 to 400 ° C or less, an insulating layer is formed by using a heat resistant silicone resin, and a method of forming an insulating layer selected for each temperature is performed by using a T-die extrusion molding method, which deviates from the conventional heating or hot roller pressing laminating method. Or by forming a carbon composite structure planar heating element by heat press molding method, insulation coating of relatively uniform thickness can be realized in the width direction, and the cooling speed of the film can be increased. Quality can be kept constant, and the insulating film used is made of heat-resistant or flame-retardant material, it is possible to extinguish itself without generating fire when an arc occurs.

Referring to Figures 2a to 2c, the multilayer structure of the planar heating element prepared according to the first to the ninth step as described above are all the same conductive polymer layer in Figures 2a to 2c above the base paper , The carbon powder mixture layer and the insulating layer are formed sequentially, while only the insulating polymer layer and the insulating layer are provided below the base sheet, or the conductive polymer layer, the insulating polymer layer and the insulating layer are provided, or the conductive polymer layer and the carbon powder. According to the structure provided with the mixed layer, the heat insulating polymer layer and the insulating layer, the application of this multi-layer structure can be selectively changed depending on the temperature distribution uniformity, the type of low temperature or high temperature heating element.

<Step 10-Installation of Silver and Copper Foil Ground Wires>

Looking at the installation process of the silver foil (3) and the copper foil ground wire (2) of the tenth step of the present invention with reference to Figure 3, insulated copper foil ground wire (2) coated with a conductive adhesive or adhesive based on the conductive polymer The silver electrode wire and the copper foil electrode line 1 are attached to one side or both sides of the layer in the same direction, and then the copper foil ground line 2 is sealed and fixed with silver foil 3 having a width of 10 to 100 mm, where the copper foil ground line 2 is 35-50 micrometers in thickness, and 10-25 mm in width will be used.

According to the installation of the silver foil 3 and the copper foil ground wire 1, the electromagnetic foil organically induced in the planar heating element is removed through the copper foil ground wire 1, and the silver foil 3 can completely shield the leakage of the electromagnetic waves to the outside. The more stable planar heating element can be used.

For reference, the number of grounding wires can be selectively adjusted according to the type and size of the low-temperature and high-temperature plane heating elements, and they are installed on one side or the other side of the plane heating elements in consideration of the connection with the external grounding wire.

<Additional Steps-Formation of Antistatic Layer>

As described above, the planar heating element manufactured through the first to ninth steps or the first to tenth steps forms a multi-layered structure. In order to reinforce the antistatic function of the planar heating element manufactured through the above steps, FIG. By using a variety of antistatic materials known in the prior art as one of the antistatic layer can be formed on the top surface of the planar heating element so as to face the ground functional layer by the silver foil and copper foil ground line around the base, wherein the antistatic layer of The number may be selectively applied according to the type of low temperature or high temperature heating element.

Claims (6)

A first step of preparing a base paper from a carbon microfiber mixed solution of carbon microfiber, paper pulp, a water-soluble binder and water or a carbon microfiber, polyester-based phosphorus, paper pulp, a water-soluble binder and water;
A second step of preparing a carbon powder mixture by mixing carbon powder, a conductive polymer, a water-soluble binder, and water;
Forming a conductive polymer layer on one or both surfaces of the base sheet;
A fourth step of manufacturing a planar heating element in which the carbon powder mixed layer is formed by impregnating or applying the carbon powder mixed liquid to one or both surfaces of the base paper on which the conductive polymer layer is formed;
A fifth step of cutting the planar heating element in which the carbon powder mixture layer is formed to have a predetermined width and length;
A sixth step of impregnating or applying a liquid insulating polymer to one surface of the cut surface heating element, wherein the insulating polymer layer is formed to face the conductive polymer layer based on the substrate when the conductive polymer layer is formed on one surface of the substrate;
A seventh step of applying a silver powder mixture consisting of a silver powder, a water-soluble binder and a diluent to both sides of the carbon powder mixed layer of the planar heating element, and then drying the silver powder;
An eighth step of pressing the copper foil electrode line (1) coated on the bottom of the conductive adhesive or adhesive based on the conductive polymer onto the silver electrode line;
A ninth step of melt-coating an insulating material on a planar heating element provided with the silver electrode line and the copper foil electrode line (1), and then drying it to form an insulating layer;
A tenth step of attaching the copper foil ground wire 2 coated with the conductive adhesive or adhesive based on the conductive polymer to one or both surfaces of the insulating layer, and then sealing and fixing the copper foil ground wire 2 with the silver foil 3. Consisting of;
The heat insulating polymer is prepared by mixing 5 to 20 parts by weight of a polymer adhesive and 0.1 to 5.0 parts by weight of a functional additive based on 100 parts by weight of porous silica,
Next to the ninth step or the tenth step, the planar heating element with insulation and grounding function further comprises the step of forming an antistatic layer on the upper surface of the planar heating element by using an antistatic material. Manufacturing method. delete delete delete delete Planar heating element provided with a heat insulating and grounding, characterized in that prepared according to claim 1.

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