WO2015156537A1

WO2015156537A1 - Rubbing roller and method for producing same

Info

Publication number: WO2015156537A1
Application number: PCT/KR2015/003278
Authority: WO
Inventors: 윤성희; 예경환
Original assignee: (주) 코미코
Priority date: 2014-04-10
Filing date: 2015-04-02
Publication date: 2015-10-15
Also published as: CN106233193B; JP6325130B2; JP2017509928A; KR20150117441A; CN106233193A; KR102081338B1

Abstract

A rubbing roller comprising: a cylindrical body made of carbon fiber-reinforced plastic (CFRP); a bond coating layer, made of carbon material, coated on the outer circumferential surface of the body; and a metal layer attached to the outer circumferential surface of the bond coating layer.

Description

Rubbing roller and manufacturing method thereof

The present invention relates to a rubbing roller and a method for manufacturing the same, and more particularly, to a rubbing roller and a method for manufacturing the same for forming an alignment film having a fine groove shape so that the liquid crystal molecules of the liquid crystal display device are uniformly arranged.

In general, a liquid crystal display device is largely composed of a liquid crystal display panel for displaying an image using the birefringence characteristics of the liquid crystal molecules and a backlight assembly for supplying light from the lower portion of the liquid crystal display panel.

The liquid crystal display panel includes a thin film transistor substrate in which a pixel electrode and a thin film transistor for switching the same are arranged in a lattice form, and the liquid crystal molecules are interposed therebetween, and the RGB pixel is formed in a thin film form. It includes a color filter substrate formed by. In this case, an alignment layer is formed on a surface of the thin film transistor substrate and the color filter substrate facing the liquid crystal molecules so as to uniformly arrange the liquid crystal molecules.

The alignment layer is formed in the shape of a micro groove by rubbing the opposing surfaces of the thin film transistor substrate and the color filter substrate with a rubbing roller having a rubbing cloth attached to an outer circumferential surface thereof. Accordingly, the alignment layer has a constant rubbing angle, a constant pressure, a constant speed, parallelism between the rubbing roller and the thin film transistor substrate or the color filter substrate, to remove dust and static electricity generated during friction, The adhesion state of the rubbing cloth is applied as an important factor. In particular, the parallelism between the rubbing roller and the thin film transistor substrate or the color filter substrate among these elements is considered to be the most important element because the microgrooves are formed very precisely.

However, since the rubbing roller has a cylindrical shape made of metal as a whole, the center portion of the rubbing roller has a weight when rubbing the thin film transistor substrate and the color filter substrate, which are larger in size, according to a liquid crystal display device, which has recently increased in size. By not tolerating and sagging, a fatal problem of failing to maintain the parallelism may occur.

It is an object of the present invention to provide a rubbing roller that can maintain parallelism with a large-area substrate and stably adhere a metal layer to its outer peripheral surface.

Further, another object of the present invention is to provide a method for producing the above rubbing roller.

In order to achieve the above object of the present invention, the rubbing roller according to one feature is a cylindrical body made of Carbon Fiber Reinforced Plastic (hereinafter referred to as CFRP), the outer peripheral surface of the body is coated with a carbon material material It comprises a bond coating layer consisting of a metal layer attached to the outer peripheral surface of the bond coating layer.

According to an embodiment, the bond coating layer may include graphite or carbon black material.

The bond coating layer according to one embodiment may have a thermal expansion coefficient of 2 to 5 e ^-6 (m / m) / K.

The bond coating layer according to one embodiment may have a thickness of 10 to 1000㎛.

The bond coating layer according to one embodiment may have a surface roughness of 1.5 to 15㎛.

In order to achieve the above object of the present invention, a method of manufacturing a rubbing roller according to one aspect is to prepare a cylindrical body made of carbon fiber reinforced composite material (CFRP), binder resin and solvent on the outer peripheral surface of the body Coating a carbon material material comprising: thermosetting the coated carbon material material to form a stabilized bond coating layer while partially or completely removing the binder resin and the solvent; and a metal material on an outer circumferential surface of the bond coating layer It comprises the step of thermal spray coating to form a metal layer.

According to an embodiment, the coated material may be graphite or carbon black. It may include a material.

The coated material according to one embodiment may have a coefficient of thermal expansion of 2 to 5 e ^-6 (m / m) / K.

Forming the bond coating layer by thermal curing according to an embodiment may include the step of natural drying at room temperature and the thermosetting to a temperature of 80 to 400 ℃.

According to an embodiment, the naturally drying step and the thermosetting step at a temperature of 80 to 400 ° C. may be performed for 0.5 to 72 hours, respectively.

The method of manufacturing the roller according to an embodiment may further include sanding the bond coating layer to have a surface roughness of 1.5 to 15 μm after forming the bond coating layer.

According to such a rubbing roller and a method of manufacturing the same, a thin film transistor substrate and a color filter of a substrate such as a liquid crystal display using a rubbing roller including a body made of carbon fiber reinforced composite material (CFRP) having high strength as a basic frame. By performing a rubbing process for forming an alignment film having a microgroove shape on a substrate, the length of the thin film transistor substrate and the color filter substrate, which are increased in size according to the recent trend of large area of the liquid crystal display device, may be lengthened. Even if the center portion does not sag, parallelism with them can be maintained stably. As a result, the microgroove of the alignment layer can be more precisely formed using the rubbing roller in which the parallelism is stably maintained.

In addition, the body made of carbon fiber reinforced composite material (CFRP) is a low metal material having a significant surface roughness on the outer peripheral surface because it is difficult to perform a high precision rubbing process due to the foreign matter easily generated due to the surface roughness according to the material properties Spray coating. Accordingly, the present invention forms the bond coating layer that is stably adhered and cured on the outer circumferential surface of the body, and then spray-coated the outer circumferential surface of the bond coating layer to form the metal layer, thereby improving the adhesion of the metal layer through the bond coating layer. Can be attached. Thus, by using the rubbing roller manufactured according to the present invention, not only can the micro groove-type alignment layer be formed very precisely and stably, but also the cost reduction effect can be expected by extending the component life of the rubbing roller. have.

1 is a perspective view schematically showing a rubbing roller according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

3 is an enlarged view of a portion A of FIG. 2.

4 is a view sequentially showing a method of manufacturing the rubbing roller shown in FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the rubbing roller and its manufacturing method according to an embodiment of the present invention. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is a perspective view schematically showing a rubbing roller according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line II 'of Figure 1, Figure 3 is an enlarged portion A of FIG. One drawing.

1 to 3, the rubbing roller 100 according to an embodiment of the present invention is used to perform a rubbing process on a substrate.

For example, the rubbing roller 100 may be used to form a microgroove alignment layer in order to uniformly arrange the liquid crystal molecules on the thin film transistor substrate and the color filter substrate having the liquid crystal molecules interposed therebetween. . Specifically, the rubbing roller 100 may form a micro groove by rubbing the thin film transistor substrate and the color filter substrate through a rubbing cloth (not shown) attached to the surface thereof.

The rubbing roller 100 includes a cylindrical body 200 serving as a basic frame. The body 200 is made of carbon fiber reinforced composite material (CFRP). Here, the carbon fiber reinforced composite material (CFRP) is a composite material of carbon fiber and various types of thermosetting resins that bond them together, and the carbon fiber has a very strong strength and specific gravity of aluminum. It is about 60% ultra light. In addition, the carbon fiber reinforced composite material (CFRP) has a thermal expansion coefficient of about 1 e ^-6 (m / m) / K is very low so that almost no heat shrink and thermal expansion occurs. In addition, since the body 200 has sufficient strength even when the hollow 210 crossing the center thereof is formed according to the high strength characteristic of the carbon fiber reinforced composite material (CFRP), the weight thereof can be made lighter. .

As such, by forming the body 200 serving as a basic frame of the rubbing roller 100 with the carbon fiber reinforced composite material (CFRP) having the high strength characteristics, according to the recent trend of large area of the liquid crystal display device. Even when the length of the thin film transistor substrate and the color filter substrate increases in size, the center portion does not sag and stable parallelism with them can be maintained. Accordingly, the microgroove of the alignment layer may be more precisely formed by using the rubbing roller 100 in which the parallelism is stably maintained.

At this time, the body 200 made of the carbon fiber reinforced composite material (CFRP) has a considerably higher surface roughness than the metal material due to the material properties. In this case, the body 200 is not only easily generated foreign matter on the surface of the body 200, but also when removing the adhesive tape attached to replace the rubbing cloth (not shown), the adhesive material of the adhesive tape on the rough surface Since it remains, there is a limit to performing a rubbing process that requires high precision like the alignment layer.

Accordingly, the body 200 is thermally sprayed on the outer circumferential surface to form a metal layer 300. The metal layer 300 may basically be made of stainless steel (hereinafter, SUS) having excellent corrosion resistance with little surface roughness.

When the metal layer 300 is thermally sprayed directly on the outer circumferential surface of the body 200, the metal particles melted at a high temperature of about 1000 ° C. adhere to the surface of the carbon fiber reinforced composite material (CFRP) of the body 200. And instantaneous cooling is naturally performed. In this process, the resin component included in the carbon fiber reinforced composite material (CFRP) melts together on the surface of the body 200 to lower the surface area and deform the trait and shape. Degradation of the adhesion of the metal layer 300 may result. In addition, the carbon fiber reinforced composite material (CFRP) of the body 200 has a significant difference from the thermal expansion coefficient 5 e ^-6 (m / m) / K of the metal layer 300 in terms of its material properties, A phenomenon in which the metal layer 300 is peeled off may occur due to a change in ambient temperature. For this reason, the rubbing roller 100 of the present invention may further include a bond coating layer 400 for improving the adhesion of the metal layer 300 between the body 200 and the metal layer 300.

As described above, the bond coating layer 400 may be formed of a material in which the resin property that caused a decrease in adhesive strength when the metal layer 300 is thermally coated is removed. In addition, the bond coating layer 400 is preferably made of a material having properties similar to the carbon fiber reinforced composite material (CFRP) to be stably adhered to the body 200. Thus, the bond coating layer 400 may be made of, for example, graphite or carbon black made of a combination of high elastic carbon.

Among them, graphite material has excellent heat resistance to withstand up to about 2000 ° C. in vacuum and inert atmosphere, and about 450 ° C., which is an oxidation temperature of carbon (C) in the air, and thus spray coating the metal layer 300 through plasma. Even when the high temperature of about 1000 ℃ generated when it can be maintained without modification. In other words, it is possible to prevent a decrease in adhesion of the metal layer 300 which may be generated according to the shape deformation.

In addition, the bond coating layer 400 has a median of about 2 to 5 e ^-6 (m / m) / in order to compensate for their significant difference in coefficient of thermal expansion between the body 200 and the metal layer 300. It may be made of a material having a coefficient of thermal expansion of K.

In addition, the bond coating layer 400 may have a thickness t1 of about 10 to 1000 μm. This is not preferable because when the thickness t1 of the bond coating layer 400 is less than about 10 μm, it is too thin to play a role of improving the adhesion between the body 200 and the metal layer 300. When the thickness exceeds about 1000 μm, the metal layer 300 may not be secured within the overall size of the rubbing roller 100, and the material cost increases as the graphite is very expensive. to be.

In addition, the thickness t2 of the metal layer 300 formed on the outer circumferential surface of the bond coating layer 400 preferably has about 300 to 500 μm. This is not preferable because when the thickness t2 of the metal layer 300 is less than about 300 μm, the strength is too weak to be damaged during the rubbing process, which may shorten the life of the rubbing roller 100. If the thickness exceeds 500 μm, it is not preferable because the stress between the metal particles of the metal is increased during the air-cooling after the thermal spray coating through the plasma, and cracks may be generated at any time.

In addition, the bond coating layer 400 may have a surface roughness of about 1.5 to 15㎛ for sufficient adhesion with the metal layer 300. When the surface roughness of the bond coating layer 400 is less than about 1.5 μm, the surface area is too narrow, which is not preferable because the adhesive force with the metal layer 300 may be degraded and peeling may occur. In this case, since the depth of the rough grooves may exceed the thickness t1 of the bond coating layer 400 and may damage the carbon fiber reinforced composite material CFRP, it is not preferable.

Hereinafter, a method of substantially manufacturing the above-described rubbing roller 100 will be described in more detail with reference to FIG. 4.

Referring to FIG. 4, first, a cylindrical body made of carbon fiber reinforced composite material (CFRP) in which carbon fibers having high strength and light weight characteristics and various kinds of thermosetting resins are composited in order to manufacture the rubbing roller 100. Prepare 200 (S100).

Subsequently, a carbon material is formed on the outer circumferential surface of the body 200. Coating in a slurry state (S200). Specifically, a slurry material of a carbon material having properties similar to the carbon fiber reinforced composite material (CFRP) may be coated on the outer circumferential surface of the body 200 by applying, depositing or spraying. Here, the slurry material of the carbon material includes a binder resin for adhering and stabilizing the carbon particles to be coated on the outer circumferential surface of the body 200 and solvents such as a modified alcohol and an organic solvent for slurry mixing. In this case, the binder resin may be a thermoplastic resin-based epoxy, phenol resin, etc., may cause the action of dispersion, interparticle adhesion, thermosetting, and the like. In addition, the modified alcohol may be exemplified by methanol, isopropyl alcohol (IPA) or ethanol, and the organic solvent may be acetone, toluene or nucleic acid. Thus, when the solvent is used, the viscosity and flowability of the slurry mixture according to the ratio, type, particle size, etc. of the mixed composition material, which is a condition required when coating the slurry material of the carbon material by coating, depositing, spraying, etc. A carbonaceous material in a state can be obtained.

When the slurry material of the carbon material thus obtained is coated, the ultrafine carbon particles contained therein act as a slip between the carbon fiber of the carbon fiber reinforced composite material (CFRP) and the gap between the carbon fiber and the thermosetting resin. And at the same time penetrates into the grain boundary, by the mutual adsorption according to the homogeneous carbide between the ultrafine carbon particles and the carbon fiber can be fixed and cured in a single layer can be coated with a strong adhesive force. Here, the material of the carbon material may include, for example, graphite or carbon black.

Subsequently, the bond coating layer 400 is formed by thermally curing the material coated with the single layer with a binder resin contained therein and a solvent such as a modified alcohol and an organic solvent to react and remove or partially volatilize ( S300). In this case, the bond coating layer 400 may be stabilized by thermosetting to remove and volatilize impurities such as other additives or promotion therein, including the resin component. Specifically, when the material of the carbon material is thermally cured, the volatilization reaction proceeds, and thus the resin component and the impurities are removed to have a very stable bonding structure therein. The forming step (S300) of the bond coating layer 400 may be divided into a process of natural curing at room temperature and a process of thermosetting it to a high temperature again.

At this time, the natural curing process is to stabilize the state as it is coated with the material containing the binder resin and the solvent in the step S200 is preferably performed for about 0.5 to 72 hours. This is not preferable when the process of the natural curing is less than about 0.5 hours because the time is too short to stabilize the state of the coating in the step S200, and this is not preferable because the volatilization reaction of the solvent proceeds properly, If the proceeding for more than about 72 hours is because the coating state is sufficiently stabilized in the step S200, but because the increase in cost due to too long process time is not preferable. Here, the time of natural curing may be variously changed within the above range according to the kind of material of the carbon material, the kind of the binder and the solvent component contained therein, and the mixing ratio.

In addition, the step of thermally curing at high temperature may be performed by thermally curing the stabilized coating layer at a high temperature so that impurities generated in the reaction, curing, volatilization, and process of the binder resin and the solvent are substantially eliminated. By thermosetting to be removed, specifically, it can be thermoset at a temperature of about 80 to 400 ℃. This is not preferable because the temperature of the thermosetting process is less than about 80 ° C., because the temperature is too low, so that curing by heat does not proceed substantially, and when the temperature exceeds about 400 ° C., the temperature is too high. This is because the thermosetting resin contained in the carbon fiber reinforced composite material (CFRP) is not preferable because it melts and surface softens, thereby lowering the adhesive force. Here, the thermosetting temperature is in the above range according to the type of slurry material of the carbon material, the type of binder resin and solvent contained therein, and the type of thermosetting resin contained in the carbon fiber reinforced composite material (CFRP). It can be changed in various ways.

In addition, the heat curing process is preferably performed for about 0.5 to 72 hours. This is not preferable when the heat curing process is performed in less than about 0.5 hours, since the time is too short and the volatilization reaction for removing the binder resin and the solvent and the impurities does not proceed. This is because the increase in cost is caused by too long process time as in the case of the natural curing is not preferable. Here, the time of thermosetting may be variously changed within the above range depending on the thickness and the type and ratio of the binder resin and the solvent contained in the coating material with the binder resin and the solvent.

This thermosetting process is preferably carried out in an inert gas atmosphere or a vacuum atmosphere so that material state deformation due to reaction with oxygen in the atmosphere does not occur. However, it can be understood that the thermosetting process can be carried out in an atmospheric atmosphere if the process is designed so that the reaction temperature with oxygen does not reach above 450 ° C, which is a reaction temperature at which the reaction with oxygen occurs, so that the degree of reaction with oxygen does not cause a fatal problem. have.

In addition, the bond coating layer 400 formed by removing the binder resin, the solvent, and the impurities by performing the thermosetting process may be quenched through the introduction of a cooling gas or air to further stabilize the bonding structure. On the other hand, the step of coating with a material containing the binder resin and the solvent (S200) and the binder resin and the solvent is stabilized while some or all removed Forming the bond coating layer 400 (S300) may be repeated a predetermined number of times according to the target thickness of the bond coating layer (400). Thus, the bond coating layer 400 may be formed to a thickness (t1) of about 10 to 1000㎛ as described with reference to FIGS. 1 to 3.

Hereinafter, a method of substantially forming the bond coating layer 400 described above will be described in more detail below.

In order to form the bond coating layer 400, first, a mixed slurry in which graphite or carbon black powder of nano to micro particle size is dispersed and mixed with ethanol is prepared. Subsequently, a diluted solution obtained by diluting acetone, which is an organic solvent, and an epoxy resin, is stirred with the mixed slurry prepared above to prepare a slurry material of carbon material. At this time, the mixed slurry and the dilution solution is preferably prepared separately and stirred for uniform dispersion. In addition, the slurry material of the carbon material is prepared by controlling the viscosity and flowability to be coated through the spraying process, and the mixed slurry is gradually cured at room temperature to lose the mixed composition ratio through natural volatilization after preparation It should be used immediately and, if necessary, in a container that is completely shielded from the atmosphere and stored in sub-zero temperatures. Subsequently, the slurry material of the carbon material is sprayed onto the outer circumferential surface of the body 200 which has completed the surface processing or cleaning process through an injector to form a coating layer having a thickness of about 300 to 400 μm. Subsequently, the coated carbon material is further stabilized on the outer circumferential surface of the body 200 as the dispersed alcohol and the organic solvent are volatilized by stabilizing and drying for about 1 day in a natural atmosphere environment as it is. To be firmly attached. At this time, the fixed thickness may be formed to be thinner or thicker than the reference as needed. Subsequently, the carbonaceous material in the solidified state is charged into a heat treatment oven as in the body 200, and the first heat treatment is performed at about 130 ° C. for about 8 hours, and then the second heat treatment process is performed at about 300 ° C. for about 24 hours. Thus, the epoxy resin and the residual organic solvent mixed in the heat treatment process are reacted and cured at a high temperature to increase the adsorption and adhesion strength between particles, thereby forming a more robust and dense bond coating layer 400. Specifically, the epoxy resin and other organic materials exposed to high temperature are changed to allotropes with the main carbon material and stabilized, and the residual organic solvent is volatilized to form a bond coating layer 400 of a single material. Subsequently, since the bond coating layer 400 which has undergone the heat treatment process has excellent stability to temperature change, the bond coating layer 400 is cooled to room temperature through natural cooling or forced cooling. The processes of the present embodiment as described above may be performed once to obtain the bond coating layer 400, but may be repeatedly performed several times to obtain a more dense or thicker bond coating layer 400.

After the step S300, the surface of the stabilized bond coating layer 400 is sanded (sanding) (S400). In this case, the sanding treatment of the bond coating layer 400 may be performed to have a surface roughness of about 1.5 to 15 μm as described with reference to FIGS. 1 to 3.

Subsequently, a part or the whole of the binder resin and the solvent are removed to coat the metal material on the outer circumferential surface of the stabilized bond coating layer 400 by plasma, flame, or arcing to form the metal layer 300. (S500). Here, the metal material may be made of, for example, stainless steel (SUS) material. In addition, as described with reference to FIGS. 1 to 3, the metal layer 300 may be formed to have a thickness t2 of about 300 μm to 500 μm. Subsequently, the rubbing cloth (not shown) may be attached to an outer circumferential surface of the metal layer 300 to form an alignment layer having a fine groove shape on the thin film transistor substrate and the color filter substrate.

As such, after forming the bond coating layer 400 stably attached to the outer circumferential surface of the body 200, the metal material is thermally coated on the outer circumferential surface of the bond coating layer 400 to form the metal layer 300. By doing so, the metal layer 300 may be attached with more improved adhesion through the bond coating layer 400.

Specifically, in the first case where the metal layer 300 is thermally coated on the surface of the carbon fiber reinforced composite material (CFRP), and the metal layer 300 is thermally coated on the bond coating layer 400 as in the present invention. In the two cases, as a result of measuring the adhesive strength in these first and second cases, about 2 to 3 MPa was measured in the first case, whereas in the second case according to the present invention, Remarkably high about 7-8 MPa was measured and the above effect was clearly confirmed.

Therefore, by using the rubbing roller 100 manufactured according to the present invention, not only an alignment film having a fine groove shape can be formed on the thin film transistor substrate and the color filter substrate, but also the metal layer 300. Due to the improved adhesion of the prolonged component life of the rubbing roller 100 can be expected to reduce the cost accordingly.

Although the detailed description of the present invention has been described with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art will have the idea of the present invention described in the claims to be described later. It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

As described above, the present invention uses a rubbing roller that includes a body made of carbon fiber reinforced composite material (CFRP) having high strength properties as a base frame, thereby performing a rubbing process for a large area substrate. It can be used to keep the degree of parallelism precisely.

In addition, the present invention forms the bond coating layer that is stably adhered and cured on the outer circumferential surface of the body, and then spray-coated on the outer circumferential surface of the bond coating layer to form the metal layer, thereby improving the adhesion of the metal layer of the rubbing roller It can be effectively used to extend component life.

Claims

Cylindrical body made of Carbon Fiber Reinforced Plastic (CFRP);

A bond coating layer coated on an outer circumferential surface of the body and made of a carbon material; And

A rubbing roller comprising a metal layer attached to an outer circumferential surface of the bond coating layer.
The rubbing roller of claim 1, wherein the bond coating layer comprises a graphite or carbon black material.
The rubbing roller according to claim 1, wherein the bond coating layer has a thermal expansion coefficient of 2 to 5 e- 6 (m / m) / K.
The rubbing roller of claim 1, wherein the bond coating layer has a thickness of about 10 μm to about 1000 μm.
The rubbing roller of claim 1, wherein the bond coating layer has a surface roughness of 1.5 to 15 μm.
Preparing a cylindrical body made of Carbon Fiber Reinforced Plastic (CFRP);

Coating a carbon material including a binder resin and a solvent on an outer circumferential surface of the body;

Thermally curing the coated carbon material to form a stabilized bond coating layer while removing some or all of the binder resin and the solvent; And

Method of manufacturing a rubbing roller comprising the step of thermally coating a metal material on the outer circumferential surface of the bond coating layer to form a metal layer.
The method of claim 6, wherein the coated material comprises graphite, carbon black material.
The method of claim 6, wherein the coated material has a coefficient of thermal expansion of 2 to 5 e -6 (m / m) / K.
The method of claim 6, wherein the thermosetting to form a bond coating layer

Natural drying at room temperature; And

Method of producing a rubbing roller, characterized in that it comprises the step of thermosetting to a temperature of 80 to 400 ℃.
10. The method of claim 9, wherein the step of natural drying and the step of thermosetting to a temperature of 80 to 400 ℃ each is carried out for 0.5 to 72 hours.
The method of claim 6, wherein after forming the bond coating layer,

The method of claim 1, further comprising the step of sanding the bond coating layer.
12. The method of claim 11, wherein in the sanding of the bond coating layer, the bond coating layer is sanded to have a surface roughness of 1.5 to 15 µm.