KR102350881B1 - Method of manufacturing heatful yarns - Google Patents

Abstract

The present invention relates to a method for manufacturing a heating yarn in which a carbon coating layer is formed on the surface thereof. The method for manufacturing a heating yarn according to the present invention comprises: a ply yarn formation step for twisting a plurality of single yarns to form a ply yarn; a preheating step for preheating the ply yarn; a carbon solution coating step for coating the ply yarn with a carbon solution; a first drying step for drying the yarn coated with the carbon solution for the first time; a second drying step for drying the coated yarn dried in the first drying step; an electrostatic application step for applying static electricity to the coated yarn; and a third drying step for drying the coated yarn dried in the second drying step and reattaching carbon particles thereto.

Description

Method of manufacturing heatful yarns

The present invention relates to a method for producing a heating yarn for forming a carbon coating layer on the surface of the yarn.

In general, a planar heating element is a heating element in the form of a thin sheet or board that generates radiant heat by electric current, and since it is easy to control the temperature, does not pollute the air, and there is no noise, it is a heating mat or heating pad, a bed mattress, and a heating blanket. Or blankets, it is widely used up to residential heating devices such as apartments and general houses.

In addition, heating devices for commercial buildings such as offices and shops, heating devices for industrial facilities such as workshops and barracks, agricultural facilities such as plastic houses and agricultural products drying systems, and various types of freeze prevention that can melt snow or prevent freezing of roads and parking lots It is widely used for equipment, leisure, cold weather, home appliances, mirror or glass anti-fogging device, health assistance, and livestock.

As a heat source of the planar heating element, a nichrome heating wire or a heating wire etched of a thin metal plate such as aluminum is used. In addition to the problem of loss of function as a furnace, there was a problem in that the temperature distribution was formed non-uniformly because it was a partial heating method in which only the heating wire part was heated.

In order to solve the above problems in the conventional planar heating element using such a metal heating wire, a method of weaving the planar heating element with a heating yarn coated with a conductive paint on the surface of the fiber yarn has been proposed.

Conductive paints are largely divided into three types. First, metal powder (silver, nickel, etc.) having very high electrical conductivity is made into a paste and used for electronic circuit boards, so that it can be used to replace the existing copper plate. Second, by giving weak conductivity using carbon black and graphite, it can be used for preventing static electricity on the floor or wall of a factory of precision equipment manufacturers such as semiconductor factories, or on clothes and textiles. Finally, it can be used for the purpose of making electromagnetic wave shielding or heating fibers and heating sheets by coating metal powder and graphite.

However, in the case of the conventional conductive paint for producing a heating yarn, oil was used, but it has environmental problems, adverse effects on the health of workers, and many problems in cleaning and management of the manufacturing process line. In addition, it is very difficult for the oil-based conductive paint to exhibit conductivity above a certain value, and it is also difficult to exhibit stable conductivity due to corrosion of metal powder added to improve conductivity.

On the other hand, in the method of manufacturing the above-mentioned heating yarn, that is, coating the conductive paint on the general fiber, the general fiber is deposited on the conductive paint, the conductive paint is sprayed on the general fiber, or the conductive paint is applied with a brush or a tool. There is a way to paint it.

1 and 2 show a conventional method of precipitating general fibers into a conductive paint (refer to Korean Patent No. 10-0725189 (published on Jun. 4, 2007)).

First, as shown in FIG. 1, when the glass fiber emitted from the nozzle 11, which is the draw plate of the glass fiber manufacturing apparatus, is passed in close contact with the drum 12 in which the liquid conductive paint formed at the bottom is stored, the drum ( The conductive paint stored in 12) is coated to a thickness of 2 μm on the surface of the glass fiber. After that, it is transferred to the dryer 13 and dried at 100° C. or less, and then transferred to the heater 15 by the roller 14 and heat-treated at 300 to 400° C., the primary coated mineral fiber is manufactured .

Again, as shown in FIG. 2, another liquid conductive paint in which the mineral fiber prepared above is preliminarily installed is passed through the dipping tank 16, and the conductive paint stored in the dipping tank 16 is transferred to the basalt. After coating the fiber surface with a thickness of 2 μm, it is transferred to the heater 15 by the roller 14 and heat-treated at 300 to 400° C., the secondary coated mineral fiber is completed.

However, in the prior art heating yarn manufacturing process as described above, even if the fiber is passed in close contact with the drum 12 in which the conductive paint is stored, or is immersed in the dipping tank 16 in which the conductive paint is stored, the conductive paint is not Because of the lump, there is a problem in that the surface of the glass fiber is not coated with a constant thickness but is coated unevenly, reducing the flexibility and uniformity of the heating yarn.

If the conductive paint is coated with a non-uniform thickness as described above, the formation of the heating layer is not constant and the change in resistance is too wide, thereby reducing the heating effect and increasing electricity consumption.

In addition, since the fibers before entering the drum 12 in which the conductive paint is stored have moisture, there is a problem in that the conductive paint is not well immersed when passing through the drum 12 .

In addition, the production time of the heating yarn is determined according to the drying speed of the conductive paint coated on the fiber. In order to sufficiently dry it in the heater 15, the feeding speed of the fiber must be slowed down, and thus the production efficiency of the heating yarn is reduced. have.

In order to solve such a problem, the present inventor has developed a 'heating yarn manufacturing apparatus' (Korean Patent No. 10-1624097 (refer to the announcement on Jun. 7, 2016).

However, in the case of the above invention, there is a problem in that energy efficiency is lowered due to the blower and cooler, the on/off valve, the sensor and the pressure relief device that are additionally installed in the secondary drying device.

In addition, during the secondary drying device, there is a problem in that the workplace and the surrounding environment are polluted due to the carbon particles separated from the coating sand, and it is necessary to further improve the carbon coating efficiency for quality control in the resistance measurement step.

The present invention has been devised to solve the problems described above, and by sequentially supplying the heat and wind discharged from the preheating device to the first drying device, the second drying device, and the third drying device, there is no additional installation of a blower. An object of the present invention is to provide a method for manufacturing a heating yarn with improved energy efficiency and drying efficiency.

Another object of the present invention is to provide a method for producing a heating yarn in which carbon coating efficiency is improved by spraying and attaching carbon particles separated from the coated yarn through a drying process to the coated yarn to which static electricity is applied.

Another object of the present invention is to provide a method for producing a heating yarn having the effect of reducing raw materials and protecting the environment by recovering and reusing the carbon particles separated through the drying process.

The above-described object of the present invention, a braid forming step of twisting a plurality of yarns to form a braid; a preheating step of preheating the braided yarn; A carbon solution coating step of coating the carbon solution on the braid; a first drying step of first drying the coated yarn coated with the carbon solution; a secondary drying step of secondary drying the coated yarn; a static electricity application step of applying static electricity to the coating yarn; And it can be achieved by providing a method for producing a heating yarn comprising a third drying step of third drying the coated yarn and re-attaching carbon particles.

According to one feature of the present invention, in the primary drying step, the coating yarn is first dried using the air discharged in the preheating step, and the second drying step is moisture from the air discharged in the first drying step. After removing the coating yarn may be secondary dried.

According to another feature of the present invention, in the step of applying static electricity, the coating yarn may be passed between a plurality of wires and rollers to which voltage is applied through a generator to apply static electricity to the coating yarn.

According to another feature of the present invention, in the third drying step, the coated yarn is thirdly dried using the air discharged in the second drying step, and the carbon particles discharged together with the air in the second drying step are It may be attached to the coating yarn by static electricity.

According to another feature of the present invention, in the third drying step, the remaining carbon particles along with the air are discharged to the carbon solution storage tank, and the air supplied to the carbon solution storage tank in the third drying step uses an air filter. can be discharged to the outside.

According to the method for manufacturing a heating yarn according to the present invention, energy efficiency is improved by using the residual heat and wind discharged from the preheating device in the first to third drying devices.

In addition, according to the method for producing a heating yarn according to the present invention, since the carbon particles separated through the drying step are attached to the coated yarn again by static electricity, there is an effect of improving the coating efficiency.

In addition, according to the method for manufacturing a heating yarn according to the present invention, since the carbon particles remaining after reattachment by static electricity are recovered to the carbon solution storage tank, there is an effect of reducing raw materials and preventing environmental pollution.

1 is a schematic view showing a manufacturing process of a mineral fiber to be primary coated by the prior art.
Figure 2 is a schematic view showing the manufacturing process of the secondary coated mineral fiber by the prior art.
3 is a block diagram of an apparatus for manufacturing a heating yarn according to an embodiment of the present invention.
4 is a block diagram of a static electricity application device according to an embodiment of the present invention.
5 is a flowchart of a method for manufacturing a heating yarn according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments described below are merely for explaining in detail enough that a person of ordinary skill in the art to which the present invention pertains can easily implement the invention, which limits the protection scope of the present invention. doesn't mean And, in describing various embodiments of the present invention, the same reference numerals will be used for components having the same technical characteristics.

Example

3 is a block diagram of an apparatus for manufacturing a heating yarn according to an embodiment of the present invention.

As shown in Figure 3, the heating yarn manufacturing apparatus 100 according to an embodiment of the present invention, the braiding yarn forming apparatus 200 for braiding the yarn 10, the braiding 20 before coating the carbon solution. A preheating device 300 for drying, a carbon solution coating device 400 for coating the carbon solution on the braided yarn 20, a first drying device 500 for primary drying of the coated yarn 30 coated with the carbon solution, 1 A second drying device 600 for secondary drying the secondary dried coated sand 30, an electrostatic applying device 700 for applying static electricity to the secondary dried coated sand 30, and an electrostatic applying device 700 While spraying carbon particles on the coated yarn 30, a third drying device 800 for tertiary drying, a resistance measuring device 900 for measuring the resistance of the coated yarn 30, and a bobbin for the coated yarn 30 It includes a coating yarn winding device 1000 to be wound on.

As the yarn 10, synthetic fibers such as polyester yarns, or general yarns made of natural fibers may be used. The yarn 10 is provided in a state wound on a bobbin, and is installed on a clip stand so that it can be spun at a certain height. It may be constantly twisted in device 200 . At this time, the braid forming apparatus 200 includes a clip stand and a bobbin provided on the clip stand and wound while twisting a plurality of yarns.

A preheating device 300 is installed at one side of the braiding forming device 200 . The braid 20, which has passed through the braiding forming device 200, is first removed from moisture while passing through the preheating device 300 before being introduced into the carbon solution coating device 400, which allows the carbon solution on the surface of the braid 20 to be smoothly This is so that it can be coated.

The preheating apparatus 300 includes a preheating chamber 320 in which a plurality of heaters 310 are installed on an inner wall, and a first exhaust fan 330 installed in an upper portion of the preheating chamber 320 . The heater 310 may be composed of an electric heater that generates heat by supplying power, and the heat emitted from the heater 310 is a heat sink (not shown) installed behind the heater 310 , that is, on the inner wall of the preheating chamber 320 . ) increases the internal temperature of the preheating chamber 320 together with the heat reflected by the . On the other hand, in the preheating chamber 320 , a plurality of rollers 40 are installed to be vertically spaced apart to guide the proceeding direction of the braided yarn 20 , and the braided yarn 20 is a plurality of up and down along the height direction of the preheating chamber 320 . It is dried by receiving heat from the heater 310 while reciprocating. At this time, the drying temperature inside the preheating chamber 320 may be formed in a range of approximately 80°C to 100°C. The heater 310 serves to provide hot air for drying the braided yarn 20 , and the heat discharged from the braided yarn 20 flows to the upper portion of the preheating chamber 320 and rises.

A first exhaust fan 330 for discharging heat from the inside of the preheating chamber 320 is installed on the upper portion of the preheating chamber 320 , and the heat discharged from the first exhaust fan 330 is discharged from a first drying device ( 500 , a first duct 340 is installed between the first exhaust fan 330 and the first drying chamber 520 to be introduced into the first drying chamber 520 . That is, the heat discharged through the first exhaust fan 330 flows along the first duct 340 and is supplied to the first drying chamber 520 to be reused.

A carbon solution coating device 400 is installed on one side of the preheating device 300 . The braided yarn 20 dried while passing through the preheating device 300 is transferred to the carbon solution coating device 400 through a plurality of rollers 40 , and the surface of the braided yarn 20 while passing through the carbon solution coating device 400 . is coated with a carbon solution. The carbon solution coating device 400 includes a carbon solution storage tank 410 and a guide plate (not shown) in which a plurality of through holes (not shown) are formed so that the braid 20 is introduced into the carbon solution storage tank 410 and , may be configured to include a plurality of nozzles 420 installed on the guide plate.

At this time, in the carbon solution storage tank 410, the impregnation solution, carbon colloid solution (hereinafter, 'carbon solution') is stored.

The nozzle 420 has a cylindrical appearance as a whole, and a nozzle tube (not shown) is formed vertically inside the axial direction. In the carbon solution storage tank 410, the coating sand 30 coated with the carbon solution passes through the nozzle pipe, and the coating thickness of the carbon solution is uniform. That is, the excess carbon solution adhered to the surface of the coating yarn 30 is removed in the process of passing through the nozzle 420, or the insufficient portion is supplemented by the carbon solution inside the nozzle tube.

A first drying device 500 is installed on the carbon solution coating device 400 . In the carbon solution coating device 400 , the coating yarn 30 coated with the carbon solution is transferred to the first drying device 500 through the nozzle 420 , and the carbon solution coated on the coating yarn 30 is dried. The tea goes through a drying process.

The first drying apparatus 500 includes a first drying chamber 520 in which a plurality of heaters 510 are installed on an inner wall, and a second exhaust fan 530 installed in an upper portion of the first drying chamber 520 . is done Like the above-described preheating chamber 320 , a heater 510 and a heat sink (not shown) may be installed on the inner wall of the first drying chamber 520 , and a plurality of rollers for guiding the progress direction of the coating yarn 30 . (40) is installed in a zigzag form spaced up and down inside the first drying chamber (520). In addition, as described above, air from the preheating chamber 320 is supplied to the lower portion of the first drying chamber 520 through the first duct 340 .

The coated sand 30 is dried by the heat of the heater 510 and the heat transferred from the preheating chamber 320 while reciprocating up and down a plurality of times in the height direction of the first drying chamber 520 . At this time, the drying temperature inside the first drying chamber 520 is generally formed in a range of 100° C. to 150° C., and the heat and moisture discharged from the coating sand flow to the upper portion of the first drying chamber 520 and rise. A second exhaust fan 530 for discharging heat and moisture from the inside of the first drying chamber 520 to the outside is installed above the first drying chamber 520 .

A second drying device 600 is installed on one side of the first drying device 500 . The second drying device 600 serves to secondary dry the coated yarn 30 that has passed through the first drying device 500 with wind. To this end, a second duct 540 is installed between the first drying device 500 and the second drying device 600 . That is, the heat discharged through the second exhaust fan 530 flows along the second duct 540 and is supplied to the second drying device 600 to be reused. At this time, the second duct 540 may be provided with a condenser 550 for removing moisture. In this case, the air discharged from the first drying device 500 is in a state in which moisture has been removed from the second drying device 600 . is supplied with

According to an embodiment of the present invention, the coated yarn 30 that has passed through the first drying device 500 is again dried in the second drying device 600 and the third drying device 800 to be described later. Accordingly, it is possible to increase the overall feed rate of the coating yarn 30 to shorten the manufacturing time and improve productivity.

The second drying device 600 includes a second drying chamber 610 , a plurality of partition plates 620 forming a zigzag flow path inside the second drying chamber 610 , and a coating yarn 30 along the flow path. Includes a plurality of rollers 40 to guide the. That is, the space inside the second drying chamber 610 is partitioned by the plurality of partition plates 620 to form an upper and lower zigzag flow path. The coating sand 30 introduced into the second drying chamber 610 is transported along the flow path, and is dried by the wind passing through the flow path.

4 is a block diagram of a static electricity application device according to an embodiment of the present invention.

3 and 4 , a static electricity application device 700 is installed on one side of the second drying device 600 . The static electricity applying device 700 serves to apply static electricity to the coated sand 30 that has passed through the second drying device 600 , and includes an electrostatic chamber 710 in which a space is formed, and the upper and lower sides of the electrostatic chamber 710 . A plurality of rollers 40 arranged in a zigzag form to guide the coating yarn 30, a first wire 720 installed at a predetermined distance apart from the upper portion of the roller 40, and a predetermined lower portion of the roller 40 It includes a second wire 730 installed to be spaced apart from each other, and a generator 740 for applying a voltage to the first wire 720 and the second wire 730 . The coated yarn 30 is charged with static electricity on the surface while passing through the static electricity application device 700 , and a plurality of rollers 40 guide the moving direction of the coated yarn 30 , while the first and second wires 720 and 730 . ) and the roller 40 so that electricity is passed so that static electricity is applied to the coating yarn 30 .

For example, while the generator 740 applies a (+) voltage to the first and second wires 720 and 730 through the power line 741 , a negative voltage is applied to the plurality of rollers 40 or a ground wire 750 ) can be connected. In this case, a current flows from the first wire 720 to the roller 40 adjacent to the first wire 720 , and from the second wire 730 to the second wire 730 and adjacent to the roller 40 direction. A current flows through the , and at this time, static electricity is applied to the coating sand 30 passing therebetween, and the electrostatic treatment is performed.

Referring again to FIG. 3 , a third drying device 800 is installed on one side of the static electricity applying device 700 .

The third drying device 800 serves to tertiarily dry the coated yarn 30 that has passed through the static electricity application device 700 with wind, while the coated yarn 30 is dried while passing through the first and second drying devices 500 and 600 . ) serves to re-attach the separated carbon particles to the coating yarn 30 .

To this end, a third duct 630 is installed between the second drying device 600 and the third drying device 800 . The third duct 630 extends into the third drying chamber 810, and at the end of the third duct 630, a spray nozzle 640 for spraying carbon particles to the coating sand 30 together with wind is provided. do.

That is, the air discharged from the second drying device 600 flows into the third drying device 800 through the third duct 630 to wind-dry the coated yarn 30, at this time the third drying device 800 . Carbon particles contained in the air introduced into the furnace are attached to the coating yarn 30 by static electricity.

While passing through the third drying device 800 , the remaining carbon particles that are not attached to the coated yarn 30 are guided to the carbon solution storage tank 410 through the fourth duct 820 . To this end, a fourth duct 820 is installed between the third drying chamber 810 and the carbon solution storage tank 410, and carbon particles discharged through the fourth duct 820 are impregnated with the carbon solution.

A discharge pipe 430 for discharging air to the outside is provided on one side of the carbon solution storage tank 410 , and an air filter 431 is provided in the discharge pipe 430 . Accordingly, even if the carbon particles introduced into the carbon solution storage tank 410 are not impregnated with the carbon solution, they are filtered by the air filter 431 to limit external discharge, and prevent the workplace and the surrounding environment from being polluted with carbon particles. can do.

Meanwhile, a resistance measuring device 900 is installed on one side of the third drying device 800 . The coating yarn 30 passes through the resistance measuring device 900 and the resistance value is measured, and when the measured resistance value is non-uniform or does not meet the reference value, the mixing ratio or drying temperature of the carbon solution, the transfer speed of the coating yarn 30 It is necessary to control the process conditions, etc.

On one side of the resistance measuring device 900, the coated yarn winding device 1000 is installed, and the coated yarn 30 on which the resistance measurement is completed is wound on a bobbin of the coated yarn winding device 1000 and temporarily stored, or a planar heating element is manufactured. It is supplied as a heating element for

5 is a flowchart of a method for manufacturing a heating yarn according to an embodiment of the present invention.

Hereinafter, a method for manufacturing a heating yarn according to an embodiment of the present invention will be described with reference to FIG. 5 .

The braid forming step (S10):

A plurality of yarns 10 such as polyester are combined to form a braided yarn 20 . At this time, the plurality of yarns 10 wound on each bobbin are towed and naturally twisted while passing through the braid forming device 200 to form the braided yarn 20 . In addition, the tension of the braided yarn 20 formed in this way can be adjusted in the process of going through a plurality of tension control rollers (not shown).

Preheating step (S20):

The braided yarn 20 formed through the braiding forming step S10 passes through the preheating chamber 320 . At this time, the moisture in the braided yarn 20 is dried by the heat emitted from the heater 310 of the preheating chamber 320 .

Carbon solution coating step (S30):

The braided yarn 20 dried through the preheating chamber 320 is coated with a carbon solution while passing through the carbon solution coating device 400 . The braided yarn 20 exiting from the lower part of the preheating chamber 320 descends and is introduced into the carbon solution storage tank 410. The carbon solution storage tank 410 stores the carbon solution, and the carbon solution storage tank ( A carbon solution is impregnated on the surface of the braided yarn 20 introduced by 410).

On the other hand, the coating yarn 30 coated with the carbon solution passes through the nozzle 420 installed on the upper part of the carbon solution storage tank 410 , and at this time, the carbon solution coated on the coating yarn 30 is the nozzle 420 . In contact with the inner circumferential surface, the coating thickness is uniformly formed.

Primary drying step (S40):

The coated sand 30 exiting from the carbon solution storage tank 410 and passing through the nozzle 420 is primarily dried while passing through the upper first drying device 500 . A first duct 340 is installed to communicate with each other between the preheating chamber 320 and the first drying chamber 520 , and thus the coating yarn 30 is dried in the first drying chamber 520 while passing through the first drying chamber 520 . It is dried by the heat discharged from the preheating chamber 320 and the heat from the heater 510 inside the first drying chamber 520 while reciprocating up and down a plurality of times in the height direction of the chamber 520 .

Secondary drying step (S50):

The coated sand 30 that has passed through the first drying device 500 is secondarily dried while passing through the second drying device 600 . A flow path in a vertical zigzag shape is formed inside the second drying chamber 610 , and a second duct 540 is installed between the first drying chamber 520 and the second drying chamber 610 to communicate with each other. A condenser 550 is installed in the second duct 540 . Accordingly, the air discharged from the first drying chamber 520 is supplied to the second drying chamber 610 after moisture is removed. The coated sand 30 introduced into the second drying chamber 610 is wind-dried while being transported along the flow path of the second drying chamber 610 .

Electrostatic application step (S60):

The coated yarn 30 that has undergone the secondary drying step (S50) passes through the static electricity application device 700, and at this time, static electricity is applied to the coated yarn 30. The coating sand 30 is transferred along a plurality of rollers 40 arranged in an up-and-down zigzag form inside the electrostatic chamber 710 . The first and second wires 720 and 730 to which a (+) voltage is applied by the generator 740 are respectively disposed on the upper and lower portions of the roller 40, and a negative voltage is applied to the roller 40 or a ground wire ( 750) can be connected. Accordingly, a current flows from the first and second wires 720 and 730 in the direction of the roller 40 adjacent to the first and second wires 720 and 730, respectively, and static electricity is generated in the coating yarn 30 passing therebetween. applied and electrostatically processed.

Third drying step (S70):

The coated sand 30 that has undergone the electrostatic application step (S60) is drawn into the third drying chamber 810 and dried for the third time. At this time, the second drying chamber 610 and the third drying chamber 810 communicate with each other by the third duct 630 , and the air discharged from the second drying chamber 610 through the third duct 630 is The third drying chamber 810 is introduced into the air to dry the coated yarn 30 .

At this time, the air introduced into the third drying chamber 810 through the third duct 630 contains carbon particles separated from the coating yarn 30, and these carbon particles are electrostatically applied to the coating yarn 30. is reattached to

On the other hand, the third drying chamber 810 and the carbon solution storage tank 410 communicate with each other by the fourth duct 820 , and accordingly, the third drying chamber 810 and the carbon solution storage tank 410 cannot be attached to the coated yarn 30 in the third drying step (S70). The remaining carbon particles are discharged to the carbon solution storage tank 410 through the fourth duct 820 together with air. The carbon particles introduced into the carbon solution storage tank 410 are impregnated in the carbon solution, and the carbon particles that are not impregnated in the carbon solution pass through the discharge pipe 430 connected to the outside from the carbon solution storage tank 410. 431) is filtered out.

Resistance measurement step (S80):

For quality control, the coated yarn 30 that has undergone the third drying step (S70) passes through the resistance measuring device 900, and in this case, if the measured resistance value is less than the reference value or is non-uniform, the carbon solution is mixed It is necessary to adjust the process conditions such as the ratio or drying temperature, the diameter of the nozzle tube, and the feed rate of the coating sand 30 .

Coating yarn winding step (S90):

The coated yarn 30 that has passed the measurement standard in the resistance measurement step (S80) is divided into a certain amount and wound on the bobbin of the coated yarn winding device 1000, and is temporarily stored or supplied as a heating yarn for manufacturing a planar heating element.

Although the embodiments of the present invention have been described above, it is understood that those of ordinary skill in the art to which the present invention pertains may make various modifications without departing from the scope of the claims of the present invention.

100: heating yarn manufacturing device 200: braided yarn forming device
300: preheating device 310: heater
320: preheating chamber 330: first exhaust fan
340: first duct 400: carbon solution coating device
410: carbon solution storage tank 420: nozzle
430: exhaust pipe 431: air filter
500: first drying device 510: heater
520: first drying chamber 530: second exhaust fan
540: second duct 550: condenser
600: second drying device 610: second drying chamber
620: partition plate 630: third duct
640: injection nozzle 700: static electricity application device
710: electrostatic chamber 720: first wire
730: second wire 740: generator
741: power line 750: ground wire
800: third drying device 810: third drying chamber
820: fourth duct 900: resistance measuring device
1000: coating yarn winding device

Claims (5)

A braid forming step of twisting a plurality of yarns to form a braid;
a preheating step of preheating the braided yarn;
A carbon solution coating step of coating the carbon solution on the braid;
a first drying step of first drying the coated yarn coated with the carbon solution;
a secondary drying step of secondary drying the coated yarn;
a static electricity application step of applying static electricity to the coating yarn; and
A third drying step of drying the coating yarn and re-attaching carbon particles is included,
In the first drying step, the coated yarn is first dried using the air discharged in the preheating step, and the second drying step is to remove moisture from the air discharged in the first drying step and then dry the coated yarn in 2 A method for producing a heating yarn, characterized in that the tea is dried. delete The method according to claim 1,
In the electrostatic application step, the coating yarn is passed between a plurality of wires and rollers to which a voltage is applied through a generator to apply static electricity to the coating yarn. 4. The method according to claim 3,
The third drying step tertiarily dries the coated yarn using the air discharged in the second drying step, and the carbon particles discharged together with the air in the second drying step are attached to the coated yarn by static electricity. Heating yarn manufacturing method, characterized in that. 5. The method according to claim 4,
In the third drying step, the remaining carbon particles together with the air are discharged to the carbon solution storage tank, and the air supplied to the carbon solution storage tank in the third drying step is discharged to the outside through an air filter. A method of manufacturing a heating yarn.

Images