WO2012064147A2

WO2012064147A2 - Apparatus for continuously preparing carbon nanotube-coated film, and method for preparing carbon nanotube-coated film using same

Info

Publication number: WO2012064147A2
Application number: PCT/KR2011/008611
Authority: WO
Inventors: 임정혁; 김승렬; 방윤영; 윤여환; 정다정; 최일환
Original assignee: (주)탑나노시스
Priority date: 2010-11-11
Filing date: 2011-11-11
Publication date: 2012-05-18
Also published as: KR20120050566A; WO2012064147A3; KR101313132B1

Abstract

The present invention relates to a method for preparing a carbon nanotube-coated film, and an apparatus for preparing a carbon nanotube-coated film. According to the present invention, the method for preparing a carbon nanotube-coated film coats a carbon nanotube solution on a flexible base film while transferring the base film by a roll-to-roll method, thereby forming a carbon nanotube-coated film, and comprises the following steps: unwinding and transferring the base film; surface-modifying the base film to allow the surface tension of the transferred base film to be higher than that of the carbon nanotube solution by 5-15 dyne/cm; removing foreign matter on the base film; coating a carbon nanotube solution containing 0.1-10% of carbon nanotubes on the base film; drying the carbon nanotube solution; washing and drying the carbon nanotube-coated film; coating a ceramic binder protective layer on the carbon nanotube-coated film; drying the carbon nanotube-coated film coated with the ceramic binder; and rewinding the base film on which the ceramic binder protective layer has been dried.

Description

Continuous carbon nanotube coating film manufacturing apparatus and its carbon nanotube coating film manufacturing method

The present invention relates to a carbon nanotube coating film manufacturing apparatus and a method for manufacturing a carbon nanotube coating film thereof, and more particularly to a field to which a conductive film such as a touch panel field, a semiconductor manufacturing equipment, a display device, and a test device can be applied. It relates to a carbon nanotube coating film production apparatus that can be applied and a carbon nanotube coating film manufacturing method thereof.

In general, carbon nanotubes have a cylindrical structure having a diameter of about 1 to 20 nm, which is usually made of a graphite surface, and have a unique bonding arrangement in the shape of a strong, flat hexagonal plate-like film, and form CNTs while winding in a spiral shape.

The carbon nanotubes are excellent in mechanical robustness and chemical stability, can exhibit both semiconductor and conductor properties, and are small in diameter, long in length, and hollow, and are excellent materials for flat panel display devices, transistors, and energy storage materials. It shows properties, and its applicability as nano-sized various electronic devices is very large.

By using such carbon nanotubes as electrode patterns or electrode faces, when using transparency due to the fineness of carbon nanotubes, electrodes of various applications can be applied to various objects. In order to maximize such utilization, carbon nanotube coating film coated with carbon nanotubes was introduced.Then, the electronic shielding or antistatic adhesive sheet, electrode or light emitting part of display, transparent electrode of electronic paper, transparent Heaters and the like can be implemented.

Conventional methods for producing a carbon nanotube coating film, the spray coating method is mainly used. Conventional spray coating is a method of forming a carbon nanotube conductive layer by coating a carbon nanotube after fixing the base film to a dedicated jig (sheet) by cutting the base film of PET material in sheets.

In the sheet method, in producing a large-area carbon nanotube coating film, it is difficult to secure uniformity of surface resistance, which is an index item for evaluating the quality of the carbon nanotube coating film.

In addition, by using a method of controlling the number of spray coating to produce a sheet unit and a variety of sheet resistance rather than continuous production, it increases the tag time of carbon nanotube coating film production. Therefore, productivity is not good.

In addition, in recent years, the carbon nanotube coating film has a multi-layered structure having a separate protective layer or the like on the carbon nanotube conductive layer, the carbon nanotube conductive layer for the production of the film having the multi-layered structure After the completion of the process, additional protective layer coating process is required to be added, which also causes a decrease in productivity through increased tag time.

Meanwhile, in order to solve this problem, a method of producing a carbon nanotube coating film by applying a roll to roll facility may be considered.

In this case, the conventional spray method of repeatedly coating a low concentration of carbon nanotube solution to form a desired surface resistance band cannot be applied, and using a high concentration of carbon nanotube solution in one coating using a carbon nanotube having a desired surface resistance A coating film should be implemented.

However, when applying the roll-to-roll facility to coat the carbon nanotube solution on the base film with a single coating, it has a lower quality level than the performance of the spray coating carbon nanotube coating film. Therefore, in order to realize the performance level and higher performance of the carbon nanotube coating film applying the spray method, it is necessary to apply the equipment and configuration of a process suitable for the carbon nanotube solution and the carbon nanotube coating film.

An object of the present invention is to provide a carbon nanotube coating film manufacturing method and a carbon nanotube coating film manufacturing apparatus in which the tag time is shortened and productivity is improved.

Another object of the present invention is to provide a carbon nanotube coating film manufacturing method and a carbon nanotube coating film manufacturing apparatus having excellent conductivity and transmittance while performing carbon nanotube coating in a roll-to-roll method.

Therefore, the carbon nanotube coating film manufacturing method according to a preferred embodiment of the present invention, by coating the carbon nanotube solution on the base film while transferring the base film having flexibility in a roll-to-roll method, a carbon nanotube coating film Forming, unwinding and transferring the base film. And surface modifying the surface tension of the transferred base film to be 5 to 15 dyne / cm higher than the surface tension of the carbon nanotube solution. Coating a carbon nanotube solution having a content of carbon nanotubes of 0.1 to 10% on the base film. And drying the carbon nanotube solution. Rewinding the dried carbon nanotube coating film.

In addition, the carbon nanotube coating film manufacturing method having a protective layer according to a preferred embodiment of the present invention, by transferring the carbon nanotube solution on the base film while transferring the flexible base film in a roll-to-roll method, carbon nano Forming a tube coating film, the method comprising unwinding and transferring the base film. Modifying the transferred base film surface to be hydrophilic. The cleaning step of removing the foreign matter adhered to the base film surface. Coating a carbon nanotube solution having a content of carbon nanotubes of 0.1 to 10% on the base film. And drying the carbon nanotube solution. And washing the base film with the carbon nanotube solution dried. And drying the washed carbon nanotube coating film. Coating a binder solution having a content of a ceramic binder of 0.1 to 10% on the dried carbon nanotube coating film. Drying the ceramic binder solution and rewinding the base film on which the ceramic binder solution is dried.

In all the above cases, the step of modifying the surface of the base film to be hydrophilic, the step of adjusting the surface tension of the base film is 40 to 70 dyne / cm. Here, the hydrophilic treatment of the base film surface may be performed by plasma treatment of the base film surface using a reforming gas of argon / oxygen or nitrogen / CDA (Clean Dry Air), or by corona treatment without using a reforming gas. Can be done.

On the other hand, the cleaning step for removing the base film surface foreign matter, the base film surface may be made through a contact method using an adhesive roll or a non-contact method using an ultrasonic equipment.

Meanwhile, the coating of the carbon nanotube solution may be performed by coating the carbon nanotube solution once through a slot die coating method or a micro gravure coating method.

On the other hand, the step of drying the film coated with the carbon nanotube solution is preferably using hot air of 80 ℃ to 130 ℃.

On the other hand, the step of washing the film dried carbon nanotube solution is preferably using a spray cleaning method or K-pping (Dipping) cleaning method, compressed air to remove the flush water of the carbon nanotube coating film Blowing through a knife (Air Knife) is preferably dried by hot air.

The coating of the ceramic binder solution may be performed by coating the ceramic binder solution once through a slot die coating method or a micro gravure coating method.

On the other hand, the step of drying the film coated with the ceramic binder solution is preferably dried using hot air and an infrared heater (IR Heater) of 100 ℃ to 150 ℃.

On the other hand, the continuous carbon nanotube coating film manufacturing apparatus in another aspect of the present invention, the unwinding unit, the transfer unit, the surface material unit, the carbon nanotube solution coating unit, the carbon nanotube solution drying unit, And a winding unit. The unwinding unit unwinds the base film. A conveying unit conveys the base film from the unwinding unit. The surface modification unit adjusts the surface tension of the base film supplied from the unwinding unit to be 5 to 15 dyne / cm higher than the surface tension of the carbon nanotube solution. The carbon nanotube solution coating unit coats the carbon nanotube solution on the base film while moving relative to the base film. The carbon nanotube solution drying unit dries the carbon nanotube solution coated on the base film. The rewinding unit rewinds the base film passed through the carbon nanotube solution drying unit.

Between the surface modification unit and the coating unit, it may include a cleaning unit for removing the foreign matter adhered to the base film surface.

The apparatus may further include a cleaning unit disposed between the surface modification unit and the coating unit and removing the foreign matter adhering to the substrate surface, wherein the cleaning unit may contact the substrate to be transported to remove the foreign matter. It may include.

In addition, the coating unit, by adjusting the thickness of the carbon nanotube solution coated on the base film, may further comprise a blade formed of a non-metal material.

According to the present invention, by coating a solution containing 0.1 to 10% of the carbon nanotubes, the quality of the carbon nanotube coating film prepared through the spray process may be realized.

In addition, it is possible to implement a more stable quality through continuous production, it is possible to produce a carbon nanotube coating film of 3 to several tens of square meters per minute.

In addition, there is no loss due to the scattering of the carbon nanotube solution generated in the spraying process, thereby reducing the manufacturing cost in accordance with the reduction of the consumption of the carbon nanotube solution.

In addition, it is possible to produce more than 1,000 mm wide carbon nanotube coating film that is difficult to realize in the spray process.

1 is a block diagram showing a carbon nanotube coating film manufacturing apparatus according to a preferred embodiment of the present invention.

Figure 2 is a flow chart showing a carbon nanotube coating film manufacturing method according to a preferred embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram showing a carbon nanotube coating film manufacturing apparatus 100 according to a preferred embodiment of the present invention. In this case, the carbon nanotube coating film manufacturing apparatus 100 of the present invention, by coating the carbon nanotube solution on the base film 10 while transferring the flexible base film 10 in a roll-to-roll method, carbon The nanotube coating film 20 is formed.

As shown in FIG. 1, the carbon nanotube coating film manufacturing apparatus 100 of the present invention includes an unwinding unit 110, a transfer unit 120, a surface modification unit 130, and a cleaning unit 140. And a carbon nanotube solution coating unit 150, a carbon nanotube solution drying unit 160, and a rewinding unit 190. In addition, the present invention may further include a washing unit 165, a protective layer solution coating unit 171, and a protective layer solution drying unit 173.

The unwinding unit 110 unwinds the base film 10.

The transfer unit 120 transfers the base film 10 so as to smoothly run the base film 10.

The surface modification unit 130 adjusts the surface tension of the base film 10 supplied from the unwinding unit 110 to be 5 to 15 dyne / cm higher than the surface tension of the carbon nanotube solution.

The cleaning unit 140 removes foreign substances from the transferred base film 10.

Carbon nanotube solution coating unit 150 is disposed across the transported base film 10, by coating a carbon nanotube solution on the base film 10, to form a carbon nanotube layer 20 do.

The carbon nanotube solution drying unit 160 dries the carbon nanotube solution coated on the base film 10.

The water washing unit 165 removes impurities of the carbon nanotube solution dried on the base film and then dries moisture.

The protective layer solution coating unit 171 is disposed across the transferred base film 10. For example, a protective layer solution such as a ceramic binder solution is coated on the base film 10 to protect the protective layer 30. ).

The protective layer solution drying unit 173 dries the protective layer solution coated on the base film 10.

The rewinding unit 190 rewinds the base film 10 that has passed through the carbon nanotube solution drying unit 160 and / or the protective layer solution drying unit 173.

To describe each unit in more detail, first, the unwinding unit 110 unwinds the base film 10. The unwinding unit 110 may include a roll on which the base film 10 is wound. The base film 10 has flexibility and may be an inorganic film or a polymer film such as polyethylene terephthalate (PET).

The unwinding unit 110 may further include a splicer and an accumulator 115. When the splicer and the accumulator (exumulator) is exhausted of the existing unwinding rolls, it is possible to continue the production by joining the newly introduced winding rolls.

The transfer unit 120 pushes the base film 10 in the advancing direction from the unwinding unit 110 and transfers it. The transfer unit 120 may include a plurality of guide rollers. The guide rollers guide the transfer while supporting the base film 10.

The surface modification unit 130 adjusts the surface tension of the base film 10 supplied from the unwinding unit 110 to be 5 to 15 dyne / cm higher than the surface tension of the carbon nanotube solution. In general, the surface tension of PET, which is the base film 10, is typically about 40 dyne / cm, and 70 dyne / cm for the carbon nanotube solution, and the difference is 30 dyne / cm, and the carbon nanotube solution is high.

However, in order for the carbon nanotube solution to be well coated on the base film 10 by one coating, it is necessary to improve the wettability of the base film 10 and the carbon nanotube solution. In this case, the surface tension of the base film 10 is 5 to 15 dyne / cm, more preferably about 7 dyne / cm to 13 dyne / cm, most preferably about 10 dyne than the surface tension of the carbon nanotube solution Higher / cm results in excellent wettability.

To this end, the surface modification unit 130 of the present invention surface-modifies the base film 10, increasing its surface tension to 50 to 60 dyne / cm, while adding a wetting agent (wetting agent) to the carbon nanotube solution By lowering the surface tension of the coating solution to 40 to 50 dyne / cm.

The surface tension of the base film 10 is higher the more hydrophilic. Accordingly, the surface modification unit 130 may be surface modified to improve the hydrophilicity of the base surface. In this case, the surface modification unit 130 may include a plasma processing apparatus and a corona treatment apparatus. The plasma processing apparatus and the corona treatment apparatus modify the base film 10 to be hydrophilic. In this case, the gas used in the plasma processing apparatus may use a reformed gas of argon & oxygen or nitrogen & clean dry air (CDA).

Since the plasma processing apparatus does not physically etch the surface of the base film 10, contamination and static electricity due to particle generation do not occur when used for a long time.

In addition, the wetting agent added to the carbon nanotube solution may include isopropyl alcohol, methyl alcohol, ethyl alcohol, SDS (Sodium Dodecyl Sulfate), and the like.

Meanwhile, the cleaning unit 140 may be disposed behind the surface modification unit 130. The cleaning unit 140 removes the foreign matter attached to the base film 10 passing through the surface modification unit 130.

The cleaning unit 140 may include a non-contact cleaner. In this case, the non-contact cleaner may include an ultrasonic generator and a foreign material inhaler. The ultrasonic generator separates foreign matter from the base film 10 using ultrasonic waves. The foreign substance inhaler removes the separated foreign substance through air suction.

Alternatively, the cleaning unit 140 may include a contact cleaner. In this case, the contact cleaner may further include an adhesive roll in contact with the base film 10. The adhesive roll adheres and removes foreign substances on the surface of the base film 10 while contacting the base film 10.

The contact cleaner may further include a strongly adhesive roll to remove the foreign matter from the adhesive roll 142. In this case, the adhesive roll 142 may be used semi-permanently, and the strong adhesive roll is a structure in which a tape is wound, and when foreign matter is electrodeposited and accumulated from the adhesive roll for a predetermined time, the contaminated tape surface is removed and a new tape is replaced. Can be used

The carbon nanotube solution coating unit 150 forms the carbon nanotube layer 20 on the base film 10. In this case, the carbon nanotube solution coating unit 150 coats the carbon nanotube solution on the base film 10 while moving relative to the base film 10.

The carbon nanotube solution coating unit 150 may include a slot die coater. The slot die coater may be a slot die formed long in the direction perpendicular to the traveling direction of the base film 10. In the slot die, the carbon nanotube solution is discharged into the gap of the tip divided into two sides of the slot die, and the discharged carbon nanotube solution is the die lip and the base film (10). After forming a bead between the () and to be coated.

In this case, the slot die itself is fixed and only the base film 10 can be coated while moving.

The carbon nanotube solution coating unit 150 may include a micro gravure coater. The microgravure coater comprises a coating roll. An oblique cell is engraved on the coating roll. Therefore, when the carbon nanotube solution is buried on the coating roll, the carbon nanotube solution is contained in the cell, and the base film 10 and the coating roll are contacted to transfer the carbon nanotube solution to the base film 10. .

Meanwhile, the carbon nanotube solution coating unit 150 may further include a blade. The blade controls the thickness of the carbon nanotube solution coated on the base film (10). The blade is preferably formed of a non-metallic material. This is to prevent a non-uniform coating from occurring by aggregating by reacting with a carbon nanotube solution when using a blade made of metal such as carbon steel or SUS. In this case, PET, PE and acetal may be applied as the blade material.

The carbon nanotube solution drying unit 160 may dry and / or harden the carbon nanotube solution coated on the base film 10.

On the other hand, although not shown, the present invention may further include a thickness measuring unit. The thickness measuring unit measures the coating thickness of the carbon nanotube coating film 20. The thickness measuring unit may include a light transmittance measuring device. The light transmittance measuring device may indirectly monitor the coating thickness through light transmittance measurement in real time.

The rewinding unit 190 rewinds the base film 10 that has passed through the carbon nanotube solution drying unit 160. The rewinding unit 190 may include a rewinding roll rewinding the carbon nanotube coating film 20 that has passed through the carbon nanotube solution drying unit 160, and a rewinding at a speed set in the rewinding roll. The apparatus may further include. It may also include an accumulator 195.

Meanwhile, a washing unit 165, a protective layer solution coating unit 171, and a protective layer solution drying unit 173 may be further included between the drying unit and the rewinding unit 190.

The washing unit 165 removes impurities contained after the carbon nanotube coating is dried. The water washing unit 165 may include a nozzle, an air blower, and a dryer. Water is sprayed from the nozzle to the surface of the carbon nanotube coating film in an appropriate size. In this case, the nozzle may be a fan-shaped spray nozzle having an orifice diameter of 0.3 to 1 mm, and sprayed at a pressure of 0.1 to 10 Kgf / cm ² .

An air blower removes water on the carbon nanotubes. The air blower may use an air knife nozzle.

The dryer completely removes residual moisture on the carbon nanotubes. In this case, the dryer may be hot air of 60 ℃ to 100 ℃.

The washing unit 165 may further include an immersion unit for dipping the carbon nanotube coating film 20. After dipping the carbon nanotube coating film 20 through the immersion unit, if impurities are removed secondarily through the nozzle, the impurities may be removed by minimizing damage to the carbon nanotube coating.

The protective layer solution coating unit 171 forms a protective layer 30 by coating the protective layer solution on the carbon nanotube layer 20. The protective layer solution may be made of a ceramic binder solution. Protective layer solution drying unit 173 The ceramic binder solution coated on the carbon nanotubes is dried. By coating the ceramic binder solution, durability and permeability are improved.

On the other hand, the present invention may further include a laminating unit 180. The laminating unit 180 is a unit for laminating the protective film 40 to the final produced film, the protective film unwinding unit 181 for unwinding the protective film 40, and the protective film 40 A protective film laminating unit 183 may be formed to be laminated on the surface of the carbon nanotube layer 20 or the protective layer 30.

The carbon nanotube coating film manufacturing apparatus 100 according to the present invention may have excellent sheet resistance even through a single coating.

On the other hand, Figure 2 is a flow chart showing a carbon nanotube coating film manufacturing method according to a preferred embodiment in another aspect of the present invention. In this case, the carbon nanotube coating film manufacturing method is to form a carbon nanotube coating film by coating the carbon nanotube solution on the base film while transferring the flexible base film in a roll-to-roll method.

As shown in Figure 2, the carbon nanotube coating method of the present invention, the step of unwinding and transporting the base film (S10), and the surface tension of the transferred base film of the carbon nanotube solution Surface modification step (S20) to be 5 to 15 dyne / cm higher than the surface tension, and a carbon nanotube layer is formed on the base film by coating a carbon nanotube solution having a content of carbon nanotubes 0.1 to 10% The step (S40), the step of drying the carbon nanotube solution (S50), and the step of rewinding the base film is dried (S90) the carbon nanotube solution. Along with the above step, removing the foreign matter on the surface of the base film (S30), washing the carbon nanotube layer (S60), coating a protective layer on the carbon nanotube layer (S70), It may further comprise the step of drying the protective layer (S80).

Each step will be described with reference to the carbon nanotube coating film manufacturing apparatus shown in FIG.

First, the base film 10 is unwinded and transferred. In this step, the base film 10 is preferably a polymer material having excellent flexibility, such as PET and PC.

Thereafter, the surface tension of the transferred base film 10 is subjected to surface modification so that the surface tension of the carbon nanotube solution is 5 to 15 dyne / cm higher. This is because the carbon nanotube solution is coated on the base film 10 has excellent coating force of 5 to 15 dyne / cm, more preferably 10 dyne / cm.

To this end, the step of surface modification of the base film 10, the step of adjusting the surface tension of the base film 10 to 50 to 60 dyne / cm, and the hydrophilic treatment of the surface of the base film 10 And adjusting the surface tension of the carbon nanotube solution to 40 to 50 dyne / cm.

Typically, the surface tension of PET is 40 dyne / cm, the surface tension of the carbon nanotube solution is 70 dyne / cm, there is a difference of 30 dyne / cm. In the present invention, by increasing the surface tension of the base film 10 and lowering the surface tension of the carbon nanotube solution, the difference between the surface tension of the base film 10 and the carbon nanotube solution 5 to 15 dyne / cm, more preferably Preferably 10 dyne / cm.

To this end, the surface tension of the base film 10 is increased to increase the surface tension to 50 to 60 dyne / cm, and a wetting agent is added to the carbon nanotube solution to increase the surface tension of the coating solution to 40 to 50 dyne. You can lower it to / cm.

Surface modification of the surface of the base film 10 may be performed by plasma treating the surface of the base film 10 using a reforming gas of argon / oxygen or nitrogen / clean dry air (CDA). Alternatively, surface modification of the surface of the base film 10 may be performed by corona treatment without using a reforming gas.

Meanwhile, in the forming of the carbon nanotube layer 20 by coating the carbon nanotube solution, the carbon nanotube solution is coated once by a slot die coating or a micro gravure coating method. It can be done by.

Meanwhile, the method may further include removing foreign matter on the surface of the base film 10 between the surface modification of the base film 10 and the coating of the carbon nanotube solution.

Drying the carbon nanotube solution may be performed by applying a residence time of 30 seconds to 3 minutes using hot air of 80 ℃ to 130 ℃. In this case, More preferably, it is more preferable to apply the residence time of 1 minute at 90 degreeC.

Meanwhile, after the carbon nanotube solution is dried, the carbon nanotube-coated film may be washed with water. In this case, the washing step may be performed by using a dipping and a nozzle, washing with water, and drying the washing water by applying air blowing and hot air of 60 ℃ ~ 100 ℃.

After drying the carbon nanotube solution, coating the protective layer 30 made of a ceramic binder on the base film 10 coated with the carbon nanotube solution, and drying the protective layer. It may include. In this case, the drying of the protective layer may be performed by applying a residence time of 1 minute to 3 minutes using hot air at 100 ° C. to 150 ° C. and an IR heater. In this case, most preferably, a residence time of 2 minutes at 130 ° C is applied.

Thereafter, the step of laminating the protective film 40 to the surface of the protective layer 30 may be further roughened.

Thereafter, the carbon nanotube coating film is rewinded, so that the carbon nanotube coating film may be manufactured in a roll-to-roll manner.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

The present invention can be applied to a device for coating carbon nanotubes in a field in which a conductive film such as a touch panel field, a semiconductor manufacturing device, a display device, and a test device can be applied.

Claims

By coating the carbon nanotube solution on the base film while transferring the flexible base film in a roll-to-roll method, to form a carbon nanotube coating film,

Unwinding and transferring the base film;

Surface modifying the surface tension of the transferred base film to be 5 to 15 dyne / cm higher than the surface tension of the carbon nanotube solution;

Coating a carbon nanotube solution having a carbon nanotube content of 0.1 to 10% on the base film;

Drying the carbon nanotube solution; And

Rewinding the dried carbon nanotube coating film;

Carbon nanotube coating film manufacturing method comprising a.
The method of claim 1,

The surface modification of the base film may include adjusting the surface tension of the base film to be 50 to 60 dyne / cm, hydrophilizing the surface of the base film, and coating tension of the carbon nanotube solution. Carbon nanotube coating film manufacturing method comprising the step of adjusting to 40 to 50 dyne / cm.
The method of claim 2,

The hydrophilic treatment of the surface of the base film may include plasma treatment of the surface of the base film using a reforming gas of argon / oxygen or nitrogen / clean dry air (CDA) or corona treatment without using a reforming gas. Carbon nanotube coating film production method.
The method of claim 1,

The coating of the carbon nanotube solution may include manufacturing the carbon nanotube coating film by coating the carbon nanotube solution once through a slot die coating method or a micro gravure coating method. Way.
The method of claim 1,

Drying the carbon nanotube solution, the carbon nanotube coating film production method, characterized in that made by applying a residence time of 30 seconds to 3 minutes at a temperature of 80 ℃ to 130 ℃.
The method of claim 1,

Method of manufacturing a carbon nanotube coating film further comprising the step of removing the foreign matter on the surface of the base film between the step of surface modification of the base film, and coating the carbon nanotube solution.
The method of claim 1,

After drying the carbon nanotube solution, the carbon nanotube-coated base film is washed with water,

The washing step is a carbon nanotube coating film manufacturing method characterized in that the washing by using a dipping and a nozzle, dried by washing the water by applying air blowing and hot air of 60 ℃ to 100 ℃.
The method of claim 1,

After drying the carbon nanotube solution, the carbon nanotube solution is further subjected to the step of coating a protective layer on the film coated,

The coating of the protective layer may include coating the ceramic binder solution once through a slot die coating method or a micro gravure coating method.
The method of claim 8,

After the coating of the protective layer, further comprising the step of drying the protective layer,

Drying the protective layer is a carbon nanotube coating film production method, characterized in that by applying a residence time of 1 minute to 3 minutes using a hot air of 100 ℃ to 150 ℃ and an IR heater (IR Heater).
By coating the carbon nanotube solution on the base film while transferring the flexible base film in a roll-to-roll method, to form a carbon nanotube coating film,

An unwinding unit for unwinding the base film;

A transfer unit for transferring the base film from the unwinding unit;

A surface modification unit for adjusting a surface tension of the base film supplied from the unwinding unit to be 5 to 15 dyne / cm higher than the surface tension of the carbon nanotube solution;

A carbon nanotube solution coating unit for coating the carbon nanotube solution on the base film while moving relative to the base film;

A carbon nanotube solution drying unit for drying the carbon nanotube solution coated on the base film; And

A rewinding unit for rewinding the base film passed through the carbon nanotube solution drying unit;

Continuous carbon nanotube coating film production apparatus comprising a.
The method of claim 10,

Between the surface modification unit and the coating unit, a continuous carbon nanotube coating film manufacturing apparatus comprising a cleaning unit for removing foreign matter adhering to the surface of the base film.
The method of claim 10,

A cleaning unit disposed between the surface modification unit and the coating unit and removing foreign matter adhering to the substrate surface;

The cleaning unit is a continuous carbon nanotube coating film manufacturing apparatus characterized in that it comprises an adhesive roll for removing foreign matter in contact with the substrate to be transferred.
The method of claim 10,

The coating unit, by adjusting the thickness of the carbon nanotube solution coated on the base film, continuous carbon nanotube coating film manufacturing apparatus characterized in that it further comprises a blade formed of a non-metal material.