KR102362324B1 - Plane heating element and manufacturing method thereof - Google Patents

Abstract

The disclosed planar heating element, a first heating layer having a surface and a rear surface; an electrode layer mounted on the surface of the first heating layer; and a second heating layer having a surface and a rear surface, and covering the surface of the first heating layer so as to cover the electrode layer mounted on the surface of the first heating layer; a plurality of (+) electrodes and (-) electrodes are alternately arranged along the width direction of the first and second heating layers while extending along the longitudinal direction of the first and second heating layers, , The first and second heating layers generate heat when a current flows by a voltage applied to the (+) electrode and the (-) electrode.

Description

Plane heating element and its manufacturing method {PLANE HEATING ELEMENT AND MANUFACTURING METHOD THEREOF}

The present invention (Disclosure) relates to a planar heating element capable of having an excellent degree of freedom of use and a method for manufacturing the same.

Herein, background information related to the present invention is provided, which does not necessarily mean known art (This section provides background information related to the present disclosure which is not necessarily prior art).

Recently, a planar heating element formed in a film type is widely used in various industrial fields, and such a planar heating element is simple to construct, can be used semi-permanently, there is no noise during heating, and there are no restrictions on the installation location. .

These conventional planar heating elements are generally manufactured by installing electrodes at both ends of a thin surface conductive heating element, and when a DC or AC voltage is applied to the electrodes, the conductive heating element generates heat while current flows.

However, the conventional planar heating elements described above have a problem in that it is difficult to use, for example, a pipe elbow having a curvature surface.

That is, in order to adhere the conventional planar heating element to the entire curvature surface, a part of the planar heating element must be cut or perforated. there was

Accordingly, the inventor of the present application tried to solve the problem of the conventional planar heating elements, and as a result, the present invention was applied for a patent.

Korean Patent Publication No. 10-2013-0125496 Korean Patent Publication No. 10-2018-0064133

An object of the present invention (Disclosure) is to provide a planar heating element capable of uniformly heating the entire surface even if it has a shape change portion such as incision and perforation, and a method for manufacturing the same.

Herein, a general summary of the present invention is provided, which should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problems, a planar heating element according to any one aspect of the various aspects describing the present invention, a first heating layer having a surface and a rear surface; an electrode layer mounted on the surface of the first heating layer; and a second heating layer having a surface and a rear surface, and covering the surface of the first heating layer so as to cover the electrode layer mounted on the surface of the first heating layer; a plurality of (+) electrodes and (-) electrodes are alternately arranged along the width direction of the first and second heating layers while extending along the longitudinal direction of the first and second heating layers, , The first and second heating layers may generate heat when a current flows by a voltage applied to the (+) electrode and the (-) electrode.

A planar heating element according to another aspect of the various aspects of describing the present invention, an insulating layer having a surface and a rear surface; an electrode layer mounted on the surface of the insulating layer; and a heating layer having a surface and a back surface and covering the surface of the insulating layer so as to cover the electrode layer mounted on the surface of the insulating layer, wherein the electrode layer includes a plurality of (+) electrodes and a plurality of (-) electrodes, , (+) electrodes and (-) electrodes are extended in the longitudinal direction of the insulating layer and the heating layer and are alternately arranged in plurality along the width direction of the insulating layer and the heating layer, and the heating layer includes the (+) electrode and ( -) If a current flows by the voltage applied to the electrode, it may generate heat.

A planar heating element according to another aspect of the various aspects of describing the present invention includes a first heating layer having a surface and a rear surface; a first electrode layer mounted on the surface of the first heating layer; a second heating layer having a front surface and a rear surface, the second heating layer covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer mounted on the surface of the second heating layer; and a third heating layer having a front surface and a rear surface and covering the surface of the second heating layer so as to cover the second electrode layer mounted on the surface of the second heating layer; It includes a +) electrode and a plurality of (-) electrodes, and the (+) electrodes and (-) electrodes extend in the longitudinal direction of the first and second heating layers while extending in the width direction of the first and second heating layers. A plurality of the electrodes are alternately arranged, and the (+) electrodes and (-) electrodes of the first electrode layer have the same polarity as the (+) electrodes and (-) electrodes of the second electrode layer with the second heating layer interposed therebetween. They are arranged to face each other, and the first to third heating layers may generate heat when current flows by a voltage applied to the (+) and (-) electrodes of the first and second electrode layers.

A planar heating element according to another aspect of the various aspects of describing the present invention includes a first heating layer having a surface and a rear surface; a first electrode layer mounted on the surface of the first heating layer; a second heating layer having a front surface and a rear surface, the second heating layer covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer mounted on the surface of the second heating layer; and a third heating layer having a front surface and a rear surface and covering the surface of the second heating layer so as to cover the second electrode layer mounted on the surface of the second heating layer; It includes a +) electrode and a plurality of (-) electrodes, and the (+) electrodes and (-) electrodes extend in the longitudinal direction of the first and second heating layers while extending in the width direction of the first and second heating layers. A plurality of them are alternately arranged along, the (+) electrodes and (-) electrodes of the first electrode layer and the (+) electrodes and (-) electrodes of the second electrode layer having different polarities with the second heating layer interposed therebetween They are arranged to face each other, and the first to third heating layers may generate heat when current flows by a voltage applied to the (+) and (-) electrodes of the first and second electrode layers.

A planar heating element according to another aspect of the various aspects of describing the present invention includes a first heating layer having a surface and a rear surface; a first electrode layer mounted on the surface of the first heating layer; an insulating layer having a front surface and a rear surface and covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer mounted on the surface of the insulating layer; and a second heating layer having a front surface and a rear surface and covering the surface of the insulating layer so as to cover the second electrode layer mounted on the surface of the insulating layer, wherein the first and second electrode layers include a plurality of (+) electrodes and A plurality of (-) electrodes are included, and a plurality of (+) electrodes and (-) electrodes are alternated along the width direction of the first and second heating layers while extending along the longitudinal direction of the first and second heating layers. are arranged, and the first and second heating layers may generate heat when a current flows by a voltage applied to the (+) electrode and the (-) electrode of the first and second electrode layers.

A planar heating element according to another aspect of the various aspects of describing the present invention includes a first heating layer having a surface and a rear surface; a first electrode layer mounted on the surface of the first heating layer; a second heating layer having a front surface and a rear surface, the second heating layer covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer mounted on the surface of the second heating layer; and a third heating layer having a front surface and a rear surface and covering the surface of the second heating layer so as to cover the second electrode layer mounted on the surface of the second heating layer; a +) electrode and a plurality of (-) electrodes, wherein the (+) electrodes and (-) electrodes of the first electrode layer extend along the longitudinal direction of the first to third heating layers and the first to third heating layers A plurality of the electrodes are alternately arranged along the width direction of the second electrode layer, and the (+) electrodes and the (-) electrodes of the second electrode layer extend along the width direction of the first to third heating layers, and the length of the first to third heating layers A plurality of them are alternately arranged along the direction, and the first to third heating layers may generate heat when a current flows by a voltage applied to the (+) and (-) electrodes of the first and second electrode layers.

Specifically, voltages may be individually applied to the (+) electrodes and the (-) electrodes.

More specifically, a voltage may be selectively applied to the (+) electrodes and the (-) electrodes.

A method for manufacturing a planar body according to another aspect of the various aspects describing the present invention is to prepare (+) electrodes and (-) electrodes for forming heating films and electrode layers forming a heating layer step (S11); Preheating the heating films, the (+) electrode and the (-) electrode of the electrode layer to have a temperature of 60 to 100 degrees for 5 to 20 minutes (S12); forming a laminated structure by laminating the preheated heating films and (+) and (-) electrodes (S13); First thermocompressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes (S14); Secondary thermal compression of the laminated structure that has undergone the first thermal compression step (S14) at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes (S15); and performing primary cooling of the laminated structure that has undergone the secondary thermocompression step (S15) at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then performing secondary cooling at a temperature of 60 to 120 degrees for 5 to 20 minutes. After, the step (S16) to complete the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again (S16); may include.

Specifically, the laminated structure of step S14 is formed by laminating a heating film, an electrode layer, and another heating film in this order from the bottom to the top, and the (+) electrodes and (-) electrodes of the electrode layer are in the longitudinal direction of the heating film A plurality of pieces may be stacked to be alternately arranged along the width direction of the heating film while extending along the.

More specifically, the laminated structure of step S14 is formed by laminating a heating film, an electrode layer, another heating film, another electrode layer, and another heating film in this order from the bottom to the top, the (+) electrodes of the electrode layers and the (-) ) The electrodes extend along the longitudinal direction of the heating film and are stacked alternately along the width direction of the heating film, and the (+) electrodes and (-) electrodes of one electrode layer are the (+) electrodes of the other electrode layer. ) electrodes and (-) electrodes may be stacked to face the same polarity or stacked to face different polarities.

A method of manufacturing a planar body according to another aspect of the various aspects describing the present invention, a heating film forming a heating layer, an insulating film forming an insulating layer, and a (+) electrode forming an electrode layer and (-) preparing an electrode (S21); Preheating for 5 to 20 minutes so that the (+) and (-) electrodes of the heating film, the insulating layer, and the electrode layer have a temperature of 60 to 100 degrees (S22); forming a laminated structure by laminating a heating film, an insulating film, (+) electrodes, and (-) electrodes (S23); A first thermal compression step (S24) of thermally compressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes; Secondary thermal compression of the laminated structure that has undergone the first thermal compression step (S24) at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes (S25); and performing primary cooling of the laminated structure that has undergone the secondary thermocompression step (S15) at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then performing secondary cooling at a temperature of 60 to 120 degrees for 5 to 20 minutes. After, the step (S26) to complete the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again (S26); may include.

Specifically, the laminate structure of step S24 is formed by stacking an insulating film, an electrode layer, and a heating film in this order from the bottom to the top, and the (+) electrodes and the (-) electrodes of the electrode layer are the length of the heating film and the insulating film A plurality of pieces may be stacked to be alternately arranged along the width direction of the heating film and the insulating film while extending along the direction.

More specifically, the laminated structure of step S24 is formed by laminating a heating film, an electrode layer, an insulating film, another electrode layer, and another heating film in this order from the bottom to the top, and the (+) electrodes and (-) of the electrode layers. ) The electrodes are stacked so that a plurality of them are alternately arranged along the width direction of the heating film and the insulating film while extending in the longitudinal direction of the heating film and the insulating film, and the (+) electrodes and the (-) electrodes of any one electrode layer are (+) electrodes and (-) electrodes of another electrode layer may be stacked to face each other with the same polarity.

According to the present invention, since a plurality of (+) electrodes and (-) electrodes are alternately arranged with a predetermined interval, and voltage is applied to each (+) electrode and (-) electrode individually, cutting and drilling, etc. Even if the same shape change is applied, the entire surface can generate heat without a non-heating part, and the temperature gradient of the entire surface can be minimized, and the effect of allowing the temperature of specific parts to be controlled differently can be provided. there will be

In addition, according to the present invention, since the heating layer and the electrode layer can be formed in multiple stages to overlap, the heating performance can be maximized, and thus, it is possible to provide an effect that can be expected to save energy.

1 is a view schematically showing a planar heating element according to a first embodiment of the present invention.
Figure 2 is a view schematically showing a planar heating element according to a second embodiment of the present invention.
Figure 3 is a view schematically showing a planar heating element according to a third embodiment of the present invention.
Figure 4 is a view schematically showing a planar heating element according to a fourth embodiment of the present invention.
5 is a view schematically showing a planar heating element according to a fifth embodiment of the present invention.
6 is a view schematically showing a planar heating element according to a sixth embodiment of the present invention.

Hereinafter, an embodiment implementing the planar heating element and its manufacturing method according to the present invention will be described in detail with reference to the drawings.

However, the intrinsic technical idea of the present invention cannot be said to be limited by the embodiments described below. It is revealed that the range that can be easily suggested as a method of substitution or modification of the embodiments described in is included.

In addition, since the terms used below are selected for convenience of explanation, in grasping the intrinsic technical idea of the present invention, they are not limited to the dictionary meaning and are appropriately interpreted as meanings consistent with the technical spirit of the present invention. it should be

Among the accompanying drawings, FIGS. 1 and 2 are views showing a planar heating element according to the first and second embodiments of the present invention. is shown.

The planar heating element 100 (see FIG. 1 ) according to the first embodiment of the present invention includes a first heating layer 110 , an electrode layer 120 and a second heating layer 130 .

The first heating layer 110 has a front surface and a rear surface, and the first heating layer 110 generates heat when a current flows by applying a DC voltage or an AC voltage to the electrode layer 120 .

To this end, the first heating layer 110 is made of a conventional carbon nanotube (CNT) in any one polymer material selected from conventional silicon, fluororubber, urethane, polyimide (PI), and polycarbonate (PC). , carbon nanotube), carbon black (carbon black), is provided in the form of a film (film) prepared by mixing and dispersing one or more of graphene (graphene).

Here, the first heating layer 110 is provided to have a thickness of 0.3 to 1 mm.

The electrode layer 120 is mounted on the surface of the first heating layer 110 as shown, and the electrode layer 120 allows current to flow through the first heating layer 110 and the second heating layer 130 to form the first The heating layer 110 and the second heating layer 130 may generate heat.

The electrode layer 120 includes a plurality of (+) electrodes 122 and (-) electrodes 124 . At this time, the (+) electrode 122 and the (-) electrode 124 extend along the longitudinal direction of the first heating layer 110 and the second heating layer 130 , and the (+) electrode 122 and the (-) electrode 122 and (-) ) The electrodes 124 are mounted on the surface of the first heating layer 110 so that a plurality of the electrodes 124 are alternately arranged along the width direction of the first heating layer 110 and the second heating layer 130 .

Here, the (+) electrode 122 and the (-) electrode 124 constituting the electrode layer 120 are copper (Cu) or stainless steel, or copper (Cu) or stainless steel (stainless steel). It may be provided by plating silver (Ag) or nickel (Ni).

In addition, in the present invention, the thickness and width of the (+) electrode 122 and the (-) electrode 124 constituting the electrode layer 120 are not particularly limited.

Meanwhile, in the present invention, the technology is characterized in that a DC voltage or an AC voltage is individually applied to the (+) electrodes 122 and the (-) electrodes 124 constituting the electrode layer 120 , but the power In order to reduce consumption, a DC voltage or an AC voltage may be selectively applied to the (+) electrodes 122 and the (−) electrodes 124 .

The second heating layer 130 has a front surface and a rear surface, and when a current flows by a DC voltage or an AC voltage applied to the (+) electrode 122 and the (−) electrode 124 of the electrode layer 120 , the first heat generation layer 130 . It heats up with the layer 110 .

To this end, the second heating layer 130 is provided in the same manner as the first heating layer 110 . That is, the second heating layer 130, like the first heating layer 110, is made of any one polymer material selected from general silicone, fluororubber, urethane, polyimide (PI), and polycarbonate (PC). It is provided in the form of a film prepared by mixing and dispersing one or more of conventional carbon nanotubes (CNT, carbon nanotube), carbon black, and graphene.

At this time, as shown, the second heating layer 130 is thermocompressed to the surface of the first heating layer 110 so that the back surface can cover the electrode layer 120 mounted on the surface of the first heating layer 110 .

Here, the second heating layer 130 is provided to have a thickness of 0.3 to 1 mm like the first heating layer 110 .

That is, the planar heating element 100 according to the first embodiment of the present invention has a structure in which the first heating layer 110, the electrode layer 120, and the second heating layer 130 are sequentially stacked from the bottom to the top, the electrode layer By 120 , the first heating layer 110 and the second heating layer 130 may generate heat at the same time.

And the planar heating element 100 according to the first embodiment of the present invention is the (+) electrodes 122 and the (-) electrodes 124 of the electrode layer 120 are individually DC voltage or AC voltage is applied. Therefore, even if a shape change such as cutting and perforation is applied to the planar heating element 100 according to the first embodiment according to the present invention, there is no part that does not generate heat in the planar heating element 100, and the first and second heating layers 110, 130 ), the entire surface is uniformly heated.

On the other hand, the planar heating element 200 (see FIG. 2) according to the second embodiment of the present invention is an insulating layer 210 and the same electrode layer 220 as the electrode layer 110 of the first embodiment and any one of the first embodiment The same heating layer 230 as the heating layers 110 and 130 is included.

The insulating layer 210 has a front surface and a rear surface as shown, and the electrode layer 220 is arranged and mounted on the surface of the insulating layer 210 in the same manner as the electrode layer 120 of the first embodiment.

In addition, the back surface of the heating layer 230 is thermally compressed to cover the electrode layer 220 on the surface of the insulating layer 210 on which the electrode layer 220 is mounted.

Here, the insulating layer 210 prevents a current flowing by a DC voltage or an AC voltage applied to the (+) electrodes 222 and the (-) electrodes 224 of the electrode layer 220 from flowing to the outside. .

To this end, the insulating layer 210 is made of any one polymer material selected from common silicone, fluororubber, urethane, polyimide (PI), and polycarbonate (PC) having excellent insulating properties and heat resistance. It is provided in the form of a film, and the thickness of the insulating layer 210 is not particularly limited in the present invention.

On the other hand, the configuration of the electrode layer 220 and the configuration of the heating layer 230 of the planar heating element 200 according to the second embodiment of the present invention is any one of the heating layers 110 and 130 and the electrode layer 120 of the first embodiment ), a detailed description will be omitted, and since the heating operation of the heating layer 230 is also the same as that of the first embodiment, a detailed description will be omitted.

The planar heating element 200 according to the second embodiment of the present invention formed in this way has a structure in which an insulating layer 210, an electrode layer 220 and a heating layer 230 are sequentially stacked from the bottom to the top.

And the planar heating element 200 according to the second embodiment of the present invention is the (+) electrodes 222 and the (-) electrodes 224 of the electrode layer 220 are individually DC voltage or AC voltage is applied to Therefore, even if a shape change such as cutting and perforation is applied to the planar heating element 200 according to the second embodiment according to the present invention, there is no part that does not generate heat in the planar heating element 200 and the entire surface of the heating layer 230 is uniformly get feverish

Of the accompanying drawings, FIGS. 3 to 5 are views showing a planar heating element according to third to fifth embodiments of the present invention. A planar heating element (300, 400, 500) that enables to save the is shown.

The planar heating element 300 (see FIG. 3) according to the third embodiment of the present invention is the same as any one of the heating layers 110 and 130 of the first embodiment and the first to third heating layers 310, 320, 330 and , including the same first and second electrode layers 340 and 350 as the electrode layer 120 of the first embodiment.

On the surface of the first heating layer 310, the first electrode layer 340 is arranged and mounted in the same manner as the electrode layer 120 of the first embodiment, and the first heating layer 310 on which the first electrode layer 340 is mounted. The back surface of the second heating layer 320 is thermocompressed to the surface to cover the first electrode layer 340 .

In addition, the second electrode layer 350 is arranged and mounted on the surface of the second heat dissipation layer 320 in the same manner as the first electrode layer 340 , and the surface of the second heating layer 320 on which the second electrode layer 350 is mounted. The back surface of the third heating layer 330 is thermocompressed to cover the second electrode layer 350 .

That is, the planar heating element 300 according to the third embodiment of the present invention is a first heating layer 310 , a first electrode layer 340 , a second heating layer 320 , and a second electrode layer 350 from the bottom to the top side. and a third heating layer 330 is sequentially stacked.

At this time, the (+) electrodes 342 and (-) electrodes 344 of the first electrode layer 340 facing each other with the second heating layer 320 interposed therebetween, and the (+) of the second electrode layer 350 . The electrodes 352 and the negative electrode 354 are arranged to face each other with the same polarity.

On the other hand, the configuration of the first to third heating layers 310, 320, 330 and the first and second electrode layers 340 and 350 of the planar heating element 300 according to the third embodiment of the present invention is the configuration of the first embodiment Since the configuration of any one of the heating layers 110, 130 and the electrode layer 120 is the same, a detailed description is omitted, and the heating operation of the first to third heating layers 310, 320, 330 is also the same as in the first embodiment. Since they are the same, detailed descriptions are omitted.

The planar heating element 300 according to the third embodiment of the present invention formed in this way is the (+) electrodes 342 and 352 of the first and second electrode layers 340 and 350, and the (-) electrodes 344 and 354. ) are individually applied with DC voltage or AC voltage, and the first to third heating layers 310, 320, 330 and the first and second electrode layers 340 and 350 are stacked to overlap each other, so high heating performance is achieved. Not only can it be used, but it can also save power.

The planar heating element 400 (see FIG. 4) according to the fourth embodiment of the present invention is the same as the first to third heating layers 310, 320, 330 of the third embodiment, first to third heating layers 410, 420 , 430 , and the same first and second electrode layers 440 and 450 as the first and second electrode layers 340 and 350 of the third embodiment.

The first to third heating layers 410, 420, 430 and the first and second electrode layers 440 and 450 are the first to third heating layers 310, 320, and 330 of the third embodiment and the first and the second electrode layers 340 and 350 are stacked in the same way, in which case the (+) electrodes 442 and (-) electrodes of the first electrode layer 440 facing each other with the second heating layer 420 interposed therebetween ( 444 and the (+) electrodes 452 and (-) electrodes 454 of the second electrode layer 450 are arranged to face each other with electrodes having different polarities.

The planar heating element 400 according to the fourth embodiment of the present invention formed in this way is the first electrode layer 440 of the current of the first electrode layer 440 or the current of the second electrode layer 450 through the second heating layer 420 . ) or the second electrode layer 450 side, so that the heating performance can be maximized.

The planar heating element 500 (see FIG. 5) according to the fifth embodiment of the present invention is the same as the first and second heating layers 110 and 130 of the first embodiment and the first and second heating layers 510 and 520 and , including an insulating layer 530 identical to that of the insulating layer 210 of the second embodiment, and first and second electrode layers 540 and 550 identical to the electrode layer 120 of the first embodiment.

On the surface of the first heating layer 510, the first electrode layer 540 is arranged and mounted in the same manner as the electrode layer 120 of the first embodiment, and the first heating layer 510 on which the first electrode layer 540 is mounted. The back surface of the insulating layer 530 is thermocompressed to the surface to cover the first electrode layer 540 .

In addition, the second electrode layer 550 is arranged and mounted on the surface of the insulating layer 530 in the same manner as the first electrode layer 540 , and the second electrode layer is mounted on the surface of the insulating layer 530 on which the second electrode layer 550 is mounted. The back surface of the second heating layer 5200 is thermocompressed to cover the 550 .

That is, the planar heating element 500 according to the third embodiment of the present invention is a first heating layer 510, a first electrode layer 540, an insulating layer 530, a second electrode layer 550 and a second from the bottom to the upper side. The two heating layers 520 have a structure in which they are sequentially stacked.

At this time, the (+) electrodes 542 and (-) electrodes 544 of the first electrode layer 340 and the (+) electrodes 544 of the second electrode layer 550 face each other with the insulating layer 530 interposed therebetween. 552 and (-) electrodes 554 are arranged to face each other with the same polarity.

On the other hand, the configuration of the first and second heating layers (510, 520) and the first and second electrode layers (540, 550) of the planar heating element 500 according to the fifth embodiment of the present invention is any one of the first embodiment The configuration of the heating layers 110 and 130 and the electrode layer 120 is the same, and the configuration of the insulating layer 530 is the same as that of the insulating layer 210 of the second embodiment, so a detailed description will be omitted, and the first and Since the heating operation of the second heating layers 510 and 520 is also the same as that of the third embodiment, a detailed description thereof will be omitted.

The planar heating element 300 according to the fifth embodiment of the present invention formed in this way is the (+) electrodes 542 and 552 of the first and second electrode layers 540 and 550, and the (-) electrodes 544 and 554. ) are individually applied with direct current or alternating voltage, and since the first and second electrode layers 540 and 550 are stacked to overlap each other, high heat generation performance can be exhibited as well as power consumption can be reduced.

Of the accompanying drawings, FIG. 6 is a view showing a planar heating element according to a sixth embodiment of the present invention. A planar heating element 600 capable of temperature control for specific portions of the heating layer 610 , 620 , 630 is shown.

The planar heating element 600 (see FIG. 6) according to the sixth embodiment of the present invention is the same as the first to third heating layers 310, 320, 330 of the third embodiment, first to third heating layers 610, 620 , 630 , and the same first and second electrode layers 640 and 650 as the first and second electrode layers 340 and 350 of the third embodiment.

The first to third heating layers 610 , 620 , and 630 , and the first and second electrode layers 640 and 650 are the first to third heating layers 310 , 320 and 330 of the third embodiment and the first And the second electrode layers 340 and 350 are stacked in the same way, in which case the (+) electrodes 642 and the (-) electrodes of the first electrode layer 640 facing each other with the second heating layer 620 interposed therebetween ( 644 and the (+) electrodes 652 and (-) electrodes 654 of the second electrode layer 650 are arranged to cross each other.

For example, the (+) electrodes 642 and the (-) electrodes 644 of the first electrode layer 640 extend along the length direction of the first to third heating layers 610 , 620 , and 630 , and A plurality of the to third heating layers 610 , 620 , and 630 are alternately arranged along the width direction, and the (+) electrodes 652 and the (-) electrodes 654 of the second electrode layer 650 are first A plurality of the first to third heating layers 610, 620, and 630 may be alternately arranged along the longitudinal direction of the first to third heating layers 610, 620, and 630 while extending along the width direction.

As such, the (+) electrodes 642 and (-) electrodes 644 of the first electrode layer 640 and the (+) electrodes 652 and (-) electrodes 654 of the second electrode layer 650 are Since they are arranged to cross each other, the temperature gradient with respect to the entire surface of the first to third heat-generating layers 610 , 620 , and 630 can be minimized.

In addition, (+) electrodes 642 and (-) electrodes 644 of the first electrode layer 640 and (+) electrodes 652 and (-) electrodes 654 of the second electrode layer 650 By controlling the voltage applied to the , it is possible to differently control the temperature of a point (a specific portion) where the (+) electrodes 642 and 652 and the (−) electrodes 644 and 654 cross each other.

Hereinafter, a method of manufacturing the planar heating element 100, 200, 300, 400, 500, 600 according to the first to sixth embodiments will be described.

In order to manufacture the planar heating element (100, 200, 300, 400, 500, 600) according to the first to sixth embodiments of the present invention, first, to form a heating film and an electrode layer to form a heating layer (+ ) electrode and (-) electrode are prepared (step S11), or a heating film forming a heating layer, an insulating film forming an insulating layer, and (+) electrode and (-) electrode forming an electrode layer are prepared (step S11) S21).

The heating film is made of any one polymer material selected from conventional silicone, fluororubber, urethane, polyimide (PI), and polycarbonate (PC). It is a film prepared by mixing and dispersing one or more of carbon black) and graphene.

At this time. The heating film is provided to have a thickness of 0.3 to 1 mm, and if the thickness of the heating film is less than 0.3 mm, the thickness of the planar heating element 100 manufactured is too thin and easily torn during use, so a short circuit may occur, and heat generation If the thickness of the film exceeds 1 mm, the thickness of the planar heating element (100, 200, 300, 400, 500, 600) to be manufactured is too thick.

The insulating film is a film made of any one polymer material selected from common silicone, fluororubber, urethane, polyimide (PI), and polycarbonate (PC) having excellent insulating and heat resistance properties, The insulating film is provided to have a thickness of 0.3 to 1 mm for the same reason as the heating film.

And the (+) electrode and the (-) electrode of the electrode layer are copper (Cu) or stainless steel, or silver (Ag) or nickel (Ni) is plated on copper (Cu) or stainless steel (stainless steel). has been provided

When the heating film, the (+) electrode and the (-) electrode of the electrode layer or the (+) electrode and the (-) electrode of the heating film, the insulating film, the electrode layer are prepared (steps S11, S21), the prepared heating film, the (+) electrode of the electrode layer ) electrode and (-) electrodes or heating film, insulating film, and (+) and (-) electrodes of the electrode layer are preheated (steps S12, S22).

Heating film, insulating film, (+) electrode and (-) heating film, insulating film, (+) electrode and ( -) It is performed for smooth fusion of the electrodes, and preheating is performed for 5 to 20 minutes so that the heating film, the insulating film, the (+) electrode, and the (-) electrode have a temperature of 60 to 100 degrees.

Here, when the preheating temperature is less than 60 degrees or more than 100 degrees, and the preheating time is less than 5 minutes or more than 20 minutes, (+) electrode and (-) electrode and heating films, or (+) electrode and (-) It becomes difficult to fusion-bond the electrode, the insulating film, and the heating film.

As described above, when the heating film, the (+) electrode and the (-) electrodes or the heating film, the insulating film, the (+) electrode and the (-) electrodes are preheated (steps S12, S22), then the preheated heating film and (+) electrodes and (-) electrodes or a heating film, an insulating film, and (+) electrodes and (-) electrodes are stacked to form a laminate structure (steps S13 and S23).

The laminated structure is formed by laminating a heating film, an electrode layer, and a heating film in order from the bottom to the top (see FIG. 1), or is formed by stacking an insulating film, an electrode layer, and a heating film in the order from the bottom to the top (see FIG. 2).

At this time, the (+) electrodes and the (-) electrodes of the electrode layer are stacked to be alternately arranged along the width direction of the heating film or the heating film and the insulating film while extending along the longitudinal direction of the heating film and the insulating film.

In addition, the laminated structure is formed by laminating a heating film, an electrode layer, a heating film, an electrode layer, and a heating film in the order from the bottom to the top (refer to FIGS. 3 and 4 ).

At this time, a plurality of (+) electrodes and (-) electrodes of the electrode layers are stacked alternately along the width direction of the heating film while extending along the longitudinal direction of the heating film, and the (+) electrodes of any one electrode layer and (-) electrodes are stacked with the same polarity facing each other (see FIG. 3) or stacked with different polarities facing each other (refer to FIG. 4).

In addition, the laminated structure is formed by stacking a heating film, an electrode layer, an insulating film, an electrode layer, and a heating film in the order from the bottom to the top of the laminated structure (see FIG. 5 ), in this case, the (+) electrodes and the (-) electrode of the electrode layers While extending along the longitudinal direction of the heating film and the insulating film, a plurality of them are stacked alternately along the width direction of the heating film and the insulating film, and (+) electrodes and (-) electrodes of any one electrode layer are (+) electrodes and (-) electrodes of the electrode layer are stacked to face each other with the same polarity.

In addition, the laminated structure is formed by laminating a heating film, an electrode layer, a heating film, an electrode layer, and a heating film in order from the bottom to the top (see FIG. 6 ), and the (+) electrodes and (-) electrodes of any one electrode layer generate heat. A plurality of the heating films are stacked alternately along the width direction of the heating film while extending along the longitudinal direction of the film, and (+) electrodes and (-) electrodes of another electrode layer extend along the width direction of the heating film while extending along the width direction of the heating film A plurality of pieces are stacked to be alternately arranged along the longitudinal direction (see FIG. 6 ).

That is, (+) electrodes and (-) electrodes of one electrode layer and (+) electrodes and (-) electrodes of another electrode layer are stacked to cross each other.

When the laminated structure is formed as described above (steps S13 and S23), the laminated structure is first thermocompressed (steps S14 and S24) and then the laminated structure is subjected to secondary thermocompression (steps S15 and S25).

In the first thermal compression (steps S14 and S24), the (+) electrodes and (-) electrodes that have been preheated by thermocompressing the laminate structure using heat and pressure are heating films or (+) electrodes and (-) electrodes are The heating film and the insulating film are fusion-bonded (fixed), and the first thermal compression is performed at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes.

Here, if the primary thermocompression temperature is less than 120 degrees, the heating films or the heating film and the insulating film are not sufficiently melted, so it is difficult to fusion of the (+) and (-) electrodes, and when the temperature exceeds 200 degrees (+) and (-) The electrodes are fused to the right and left bent (slanted).

And if the primary thermocompression pressure is less than 10 kg/cm 2 and less than 10 minutes, it is difficult to smoothly fusion the heating film and insulating films and electrodes, and when the pressure exceeds 20 kg/cm 2 and the time exceeds 20 minutes Not only is it difficult to control the thickness of the planar heating element 100 to be manufactured, but also productivity is reduced.

Secondary thermocompression (steps S15 and S25) is to completely fuse the heating films with the (+) electrodes and (-) electrodes between the (+) electrodes using heat and pressure of the first thermocompressed laminated structure or (+) electrode It is performed to completely fuse to the heating film and the insulating film with the electrodes and (-) electrodes interposed therebetween, and the secondary thermal compression is performed at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes. do.

Here, if the temperature, pressure and time are less than the set value, the (+) and (-) electrodes are separated from the heating film and the insulating film in the prepared planar heating element (100, 200, 300, 400, 500, 600), When the temperature, pressure and time exceed the set values, it is difficult to control the thickness of the manufactured planar heating element (100, 200, 300, 400, 500, 600), as well as the performance and performance of the heating film and insulating film due to combustion reactions such as carbonization characteristics are reduced.

On the other hand, when the secondary thermal compression is completed (steps S15, S25), the planar heating element (100, 200, 300, 400, 500, 600) by adjusting the cooling rate step by step so as not to leave residual stress in the heating film and insulating films to complete the manufacture of (steps S16 and S26).

Here, the cooling in steps (S16, S26) is primarily performed at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then secondarily performed at a temperature of 60 to 120 degrees for 5 to 20 minutes, and then again 30 to 80 It is carried out three times at a temperature of 5-20 minutes.

And the manufactured planar heating element (100, 200, 300, 400, 500, 600) is cut to a set length and supplied to a place of use.

The planar heating element (100, 200, 300, 400, 500, 600) formed in this way according to the present invention is a plurality of (+) electrodes and (-) electrodes are alternately arranged with a predetermined interval, each (+) Since voltage is applied to the electrodes and (-) electrodes individually, even if a shape change such as cutting or perforation is applied, the entire surface heats up without a portion that does not generate heat in the planar heating element (100, 200, 300, 400, 500, 600). Not only can it be done, but it can also minimize the temperature gradient over the entire surface, and it allows the temperature of a specific area to be controlled differently.

In addition, since the planar heating element 100, 200, 300, 400, 500, 600 according to the present invention can be formed in multiple stages to overlap the heating layer and the electrode layer, not only can the heating performance be maximized, but also energy saving due to this effect can be expected.

In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

Claims (14)

a first heating layer having a front surface and a rear surface; an electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the first heating layer; and a second heating layer having a surface and a back surface and covering the surface of the first heating layer so as to cover the electrode layer mounted on the surface of the first heating layer; including, the (+) electrode and the (-) ) In the method for manufacturing a planar heating element in which the first and second heating layers generate heat when a voltage is applied to the electrode,
preparing heating films forming the first and second heating layers and the (+) electrode and the (-) electrode forming the electrode layer;
preheating for 5 to 20 minutes so that the heating films forming the first and second heating layers, the (+) electrode, and the (-) electrodes of the electrode layer have a temperature of 60 to 100 degrees;
The (+) electrode and the (-) electrode of the electrode layer are laminated on the surface of the heating film forming the preheated first heating layer, and the heat generating layer to form the first heating layer to cover the electrode layer forming a laminated structure by covering the heating film forming a second heating layer on the surface of the film;
first thermocompressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes;
Secondary thermal compression of the laminated structure, which has undergone the first thermal compression step, at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes; and
After performing the primary cooling of the laminated structure, which has undergone the secondary thermocompression step, at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then secondarily cooling the laminated structure at a temperature of 60 to 120 degrees for 5 to 20 minutes, Completing the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again;
The (+) electrode and the (-) electrodes in the step of forming the laminate structure extend along the longitudinal direction of the heating films forming the first and second heating layers, and the first and second heating layers A method of manufacturing a planar heating element that is laminated so that a plurality of them are alternately arranged along the width direction of the heating films to form a.
an insulating layer having a surface and a back surface; an electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the insulating layer; and a heating layer having a surface and a back surface and covering the surface of the insulating layer so as to cover the electrode layer mounted on the surface of the insulating layer, wherein a voltage is applied to the (+) electrode and the (-) electrode In the method for manufacturing a planar heating element that the heating layer generates heat when
In the method for manufacturing a planar heating element,
preparing a heating film forming the heating layer, an insulating film forming the insulating layer, and a (+) electrode and a (-) electrode forming the electrode layer;
Preheating for 5 to 20 minutes so that the (+) electrode and the (-) electrode of the heating film forming the heating layer, the insulating film forming the insulating layer, and the electrode layer have a temperature of 60 to 100 degrees ;
The (+) electrode and the (-) electrode of the electrode layer are laminated on the surface of the insulating film forming the insulating layer, and the heat is generated on the surface of the insulating film forming the insulating layer so as to cover the electrode layer. forming a laminated structure by covering the heating film forming a layer;
a first thermal compression step of thermally compressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes;
Secondary thermal compression of the laminate structure, which has undergone the first thermal compression step, at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes; and
After performing the primary cooling of the laminated structure that has undergone the secondary thermocompression step at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then performing secondary cooling at a temperature of 60 to 120 degrees for 5 to 20 minutes, Completing the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again; including,
The (+) electrode and the (-) electrode of the electrode layer in the step of forming the laminated structure extend along the longitudinal direction of the insulating film and the heating film forming the insulating layer and the heating layer, and the insulation A method of manufacturing a planar heating element in which a plurality of layers are stacked to be alternately arranged along the width direction of the heating layer.
a first heating layer having a front surface and a rear surface; a first electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the first heating layer; a second heating layer having a front surface and a rear surface and covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the second heating layer; and a third heating layer having a front surface and a rear surface and covering the surface of the second heating layer so as to cover the second electrode layer mounted on the surface of the second heating layer. In the method for manufacturing a planar heating element in which the first to third heating layers generate heat when a voltage is applied to the (+) electrode and the (-) electrode of
preparing the (+) electrode and the (-) electrode forming the first to third heating layers and the first and second heating films forming the first to third heating layers;
Preheating for 5 to 20 minutes so that the heating films forming the first to third heating layers, the (+) electrodes and the (-) electrodes of the first and second electrode layers have a temperature of 60 to 100 degrees step;
The (+) electrode and the (-) electrode of the first electrode layer are laminated on the surface of the heating film forming the preheated first heating layer, and the first heating layer is formed to cover the first electrode layer. The (+) electrode of the second electrode layer and the (-) cover the heating film forming a second heating layer on the surface of the heating film to be formed, and the (+) electrode of the second electrode layer on the surface of the heating film forming the second heating layer ) forming a laminate structure by covering the heating film forming the third heating layer on the surface of the heating film forming the second heating layer so as to cover the second electrode layer after stacking the electrodes;
first thermocompressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes;
Secondary thermal compression of the laminate structure, which has undergone the first thermal compression step, at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes; and
After performing the primary cooling of the laminated structure that has undergone the secondary thermocompression step at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then performing secondary cooling at a temperature of 60 to 120 degrees for 5 to 20 minutes, Completing the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again; including,
The (+) electrodes and the (-) electrodes of the first and second electrode layers in the step of forming the laminate structure extend along the longitudinal direction of the heating films forming the first to third heating layers. A plurality of the heating films forming the first to third heating layers are stacked to be alternately arranged along the width direction, and the (+) and (-) electrodes of the first electrode layer and the second electrode layer The (+) electrode and the (-) electrode of the same polarity of the method of manufacturing a planar heating element is laminated so as to face each other with the heating film forming the second heating layer therebetween.
a first heating layer having a front surface and a rear surface; a first electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the first heating layer; a second heating layer having a front surface and a rear surface and covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the second heating layer; and a third heating layer having a front surface and a rear surface and covering the surface of the second heating layer so as to cover the second electrode layer mounted on the surface of the second heating layer. In the method for manufacturing a planar heating element in which the first to third heating layers generate heat when a voltage is applied to the (+) electrode and the (-) electrode of
preparing the (+) electrode and the (-) electrode forming the first to third heating layers and the first and second heating films forming the first to third heating layers;
Preheating for 5 to 20 minutes so that the heating films forming the first to third heating layers, the (+) electrodes and the (-) electrodes of the first and second electrode layers have a temperature of 60 to 100 degrees step;
The (+) electrode and the (-) electrode of the first electrode layer are laminated on the surface of the heating film forming the preheated first heating layer, and the first heating layer is formed to cover the first electrode layer. The (+) electrode of the second electrode layer and the (-) cover the heating film forming a second heating layer on the surface of the heating film to be formed, and the (+) electrode of the second electrode layer on the surface of the heating film forming the second heating layer ) forming a laminate structure by covering the heating film forming the third heating layer on the surface of the heating film forming the second heating layer so as to cover the second electrode layer after stacking the electrodes;
first thermocompressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes;
Secondary thermal compression of the laminate structure, which has undergone the first thermal compression step, at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes; and
After performing the primary cooling of the laminated structure that has undergone the secondary thermocompression step at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then performing secondary cooling at a temperature of 60 to 120 degrees for 5 to 20 minutes, Completing the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again; including,
The (+) electrodes and the (-) electrodes of the first and second electrode layers in the step of forming the laminate structure extend along the longitudinal direction of the heating films forming the first to third heating layers. A plurality of the heating films forming the first to third heating layers are stacked to be alternately arranged along the width direction, and the (+) and (-) electrodes of the first electrode layer and the second electrode layer The (+) electrode and the (-) electrode of the method of manufacturing a planar heating element are laminated so that they are arranged to face each other with the heating film forming the second heating layer therebetween.
a first heating layer having a front surface and a rear surface; a first electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the first heating layer; an insulating layer having a front surface and a rear surface and covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the insulating layer; and a second heating layer having a surface and a back surface and covering the surface of the insulating layer so as to cover the second electrode layer mounted on the surface of the insulating layer; ) In the method for manufacturing a planar heating element in which the first and second heating layers generate heat when a voltage is applied to the electrode and the (-) electrode,
preparing a heating film forming the first and second heating layers, an insulating film forming the insulating layer, and (+) electrodes and (-) electrodes forming the first and second electrode layers;
The heating film forming the first and second heating layers, the insulating film forming the insulating layer, and the (+) electrodes and the (-) electrodes of the first and second electrode layers are at a temperature of 60 to 100 degrees. 5 to 20 minutes of preheating to have a;
Laminating the (+) electrode and the (-) electrode of the first electrode layer on the surface of the heating film forming the first heating layer, and forming the first heating layer to cover the first electrode layer The (+) electrode and the (-) electrode of the second electrode layer are laminated on the surface of the insulating film forming the insulating layer to cover the insulating film forming the insulating layer on the surface of the heating film forming a laminate structure by covering the heating film forming the second heating layer on the surface of the insulating film forming the insulating layer so as to cover the second electrode layer;
a first thermal compression step of thermally compressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes;
Secondary thermal compression of the laminate structure, which has undergone the first thermal compression step, at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes; and
After performing the primary cooling of the laminated structure that has undergone the secondary thermocompression step at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then performing secondary cooling at a temperature of 60 to 120 degrees for 5 to 20 minutes, Completing the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again; including,
The (+) electrode and the (-) electrode of the first and the electrode layer in the step of forming the laminated structure are the insulating film and the heating film forming the insulating layer and the first and second heating layers doedoe stacked so as to be alternately arranged along the width direction of the insulating layer and the heating layer while extending along the longitudinal direction, the (+) electrode and the (-) electrode of the first electrode layer, and the second electrode layer The (+) electrode and the (-) electrode of the same polarity of the method of manufacturing a planar heating element is laminated so as to face each other with the insulating film forming the insulating layer therebetween.
a first heating layer having a front surface and a rear surface; a first electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the first heating layer; a second heating layer having a front surface and a rear surface and covering the surface of the first heating layer so as to cover the first electrode layer mounted on the surface of the first heating layer; a second electrode layer having a plurality of (+) electrodes and a plurality of (-) electrodes and mounted on a surface of the second heating layer; and a third heating layer having a front surface and a rear surface and covering the surface of the second heating layer so as to cover the second electrode layer mounted on the surface of the second heating layer. In the method for manufacturing a planar heating element in which the first to third heating layers generate heat when a voltage is applied to the (+) electrode and the (-) electrode of
preparing the (+) electrode and the (-) electrode forming the first to third heating layers and the first and second heating films forming the first to third heating layers;
Preheating for 5 to 20 minutes so that the heating films forming the first to third heating layers, the (+) electrodes and the (-) electrodes of the first and second electrode layers have a temperature of 60 to 100 degrees step;
The (+) electrode and the (-) electrode of the first electrode layer are laminated on the surface of the heating film forming the preheated first heating layer, and the first heating layer is formed to cover the first electrode layer. The (+) electrode of the second electrode layer and the (-) cover the heating film forming a second heating layer on the surface of the heating film to be formed, and the (+) electrode of the second electrode layer on the surface of the heating film forming the second heating layer ) forming a laminate structure by covering the heating film forming the third heating layer on the surface of the heating film forming the second heating layer so as to cover the second electrode layer after stacking the electrodes;
first thermocompressing the laminated structure at a temperature of 120 to 200 degrees and a pressure of 10 to 20 kg/cm 2 for 10 to 20 minutes;
Secondary thermal compression of the laminate structure, which has undergone the first thermal compression step, at a temperature of 180 to 250 degrees and a pressure of 25 to 50 kg/cm 2 for 10 to 30 minutes; and
After performing the primary cooling of the laminated structure that has undergone the secondary thermocompression step at a temperature of 100 to 200 degrees for 5 to 20 minutes, and then performing secondary cooling at a temperature of 60 to 120 degrees for 5 to 20 minutes, Completing the production of the planar heating element by performing a third cooling for 5 to 20 minutes at a temperature of 30 to 80 degrees again; including,
The (+) electrode and the (-) electrodes of the first electrode layer in the step of forming the laminate structure extend along the longitudinal direction of the heating films forming the first to third heating layers, and the first A plurality of the heating films forming the to third heating layer are stacked to be alternately arranged along the width direction, and the (+) electrode and the (-) electrode of the second electrode layer are the first to the third heating layer While extending along the width direction of the heating films to form a method of manufacturing a planar heating element laminated so as to be alternately arranged in a plurality along the longitudinal direction of the heating films forming the first to third heating layers.
7. The method according to any one of claims 1 to 6,
The (+) electrodes and the (-) electrode is a method of manufacturing a planar heating element in which voltage is applied individually.
7. The method according to any one of claims 1 to 6,
The (+) electrodes and the (-) electrodes are selectively applied voltage to the method of manufacturing a planar heating element.
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