KR20060031744A - A method for multi-coating of metal surface, a muti-coated metal product and a coatinf apparatus of it - Google Patents

Abstract

Disclosed are a multi-coating method of a metal, a multi-coated metal product, and a coating apparatus thereof, in which various coating materials are repeatedly coated on a surface of a metal to realize various colors at various times. This method includes a surface treatment step of removing foreign matter from the surface of the coating material by immersing the metal coating material in an alkaline aqueous solution, a first rinsing step of rinsing the surface-treated coating material in an alkaline accommodating water, and the first rinsed coating material. A second rinsing step of ultrasonic cleaning at, a drying step of drying the second rinsed coated material, and placing the dried coated material in a vacuum chamber of 90 ℃ ~ 110 ℃ and sequentially placing at least two or more coating materials And a coating step of sequentially depositing the surface of the coated material by heating with an electron beam, and a finishing drying step of drying the coated material at 90 ° C to 110 ° C. Such a coating method is a surface treatment of the surface of the metal in a yalkalic aqueous solution and by repeatedly depositing a coating coating of various colors to implement a variety of colors according to the time, thereby improving the decorative properties. In addition, ITO (Indium Tin Oxide) is deposited on the surface of the final coating material to shield the electromagnetic wave. In addition, by further depositing HT-100 to prevent water film and static electricity.

Metal, multi-coating, electron beam, deposition

Description

A method for multi-coating of metal surface, a muti-coated metal product and a coatinf apparatus of it}

1 is a flow chart showing a coating method of the present invention,

Figure 2 is a cross-sectional view of an embodiment showing the coating material of the metal coated by the coating method of the present invention,

Figure 3 is a cross-sectional view of another embodiment showing the coating material of the metal coated by the coating method of the present invention,

4 is a schematic view showing a coating apparatus of the present invention;

5 is a schematic view showing a coating machine employed in the coating apparatus of the present invention,

6 is a perspective view showing a mobile phone employing the multi-coated metal product of the present invention.

* Explanation of symbols for main parts of the drawings

10 ... Etching tank 20 ... First rinsing tank

30.2nd rinse tank 40 ... heater

50 ... 1st oven 60 ... Coating machine

70 ... 2nd oven

The present invention relates to a multi-coating method of a metal, a multi-coated metal product, and a coating apparatus thereof, by repeatedly coating various types of coating materials on a metal surface to realize various colors at various times.

In general, metals are excellent in strength and luster, and thus are widely used as finishing materials for general products. In addition, it is used to implement the desired color by plating a desired metal on the surface.

However, since the color implementation of the metal surface by plating is limited to the plated metal color, it is difficult to realize various colors that change with time.

The present invention has been made to solve the above problems, and provides a metal product employing a multi-coating method of a metal and a multi-coated metal coating agent so that the surface of the metal can be expressed in various colors according to the time. Its purpose is to.

The multi-coating method of the metal of the present invention to achieve the above object is a surface treatment step of removing the foreign matter from the surface of the coating material by immersing the metal coating material in an alkaline aqueous solution,

A first rinsing step of rinsing the surface-treated material to be coated with alkaline water;

A second rinsing step of ultrasonically cleaning the first rinsed coated material in pure water;

A drying step of drying the second rinsed coated material;

A coating step of placing the dried coated material in a vacuum chamber of 90 ° C. to 110 ° C. and heating at least two or more coating materials sequentially with an electron beam and sequentially depositing them on the surface of the coated material;

It characterized in that it comprises a finish drying step of drying the coated material to be coated at 90 ℃ ~ 110 ℃.

The method may further include depositing and coating indium tin oxide (ITO) for shielding electromagnetic waves on the surface of the final coating material deposited on the coating material.

In addition, the coating method of the present invention is characterized by further depositing HT-100 on the surface of the indium tin oxide (ITO).

The coating material is characterized in that at least two selected from SiO ₂ , TiO ₂ , Ti, ZrO ₂ .

The drying step consists of a first drying step of drying with hot air at 100 ℃ ~ 119 ℃, and a second drying step of drying for 1-2 hours at 120 ℃ ~ 140 ℃.

On the other hand, the multi-coated metal product of the present invention to achieve the above object is a base of a metal immersed in an alkaline aqueous solution, the surface of the etching treatment, a coating layer is formed by alternately depositing a plurality of coating material on the base, the deposition coating on the surface of the coating layer It characterized in that the indium tin oxide (ITO) layer is formed.

At least two coating materials are selected from SiO ₂ , TiO ₂ , Ti, and ZrO ₂ .

In addition, in the multi-coated metal product of the present invention, HT-100 is further formed on the surface of the indium tin oxide (ITO) layer to prevent static electricity and water film.

On the other hand, the coating apparatus of the present invention to achieve the above object is a surface treatment etching bath for receiving an alkaline aqueous solution and to remove foreign substances from the surface of the metal coating material, and a first rinsing to rinse the surface-treated coating material to accommodate the alkaline aqueous solution A second rinsing tank for rinsing the rinsed coated material and receiving pure water and employing an ultrasonic vibrator, a hot air for drying the rinsed coated material with hot air, and a first for drying the hot air dried coated material at 120 ° C. An oven oven, a vacuum chamber in which at least two coating materials and the dried coated material are positioned and maintained at 90 ° C. to 110 ° C., which are accommodated in the chamber and sequentially heated each coating material sequentially on the surface of the coated material. A coater having an electron gun that emits an electron beam to be deposited, and the coated material to be coated at It characterized by having a second oven to dry.

The coating material is at least two selected from SiO ₂ , TiO ₂ , Ti, ZrO ₂ .

According to the characteristics of the present invention, the multi-coating method of the metal of the present invention, the multi-coated metal product and its coating apparatus is a surface treatment of the surface of the metal and by repeatedly depositing a coating coating of various colors to deposit various coatings according to the time It enables the implementation of improves the decoration. In addition, indium tin oxide (ITO) and HT-100 are further deposited to prevent water film, antistatic and electromagnetic waves.

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

The multi-coating method of the metal of the present invention, the multi-coated metal product and the coating apparatus thereof enables the implementation of various colors according to the time by sequentially coating a coating coating of various colors on the surface of the metal to improve the decorative properties.

Referring to Figure 1 showing the coating method of the present invention, which is a surface treatment step of removing the foreign matter from the surface of the coating material by immersing the metal coating material in an alkaline aqueous solution, and rinsing the surface-treated coating material in alkaline water receiving 1 A second rinsing step, a second rinsing step of ultrasonically cleaning the first rinsed coated material in pure water, a drying step of drying the second rinsed coated material, and the drying in a vacuum chamber of 90 ° C to 110 ° C. A coating step of placing the coated material and sequentially depositing at least two or more coating materials with an electron beam and sequentially depositing the coated material on the surface of the coated material, and drying and drying the coated coated material at 90 ° C. to 110 ° C. Include.

As the alkaline aqueous solution in the surface treatment step, a strongly alkaline potassium hydroxide (KOH) solution is used, and the alkaline aqueous solution in the first rinsing step is less alkaline solution than the potassium hydroxide solution in the surface treatment step.

The method may further include depositing and coating indium tin oxide (ITO) for shielding electromagnetic waves on the surface of the final coating material deposited on the coating material.

In addition, the coating method of the embodiment of the present invention further deposits HT-100 on the surface of the indium tin oxide (ITO) to prevent water film and static electricity.

The coating material is deposited by alternately stacking at least two of SiO ₂ , TiO ₂ , Ti, and ZrO _{2 on} the surface of the selected coating material.

The drying step consists of a first drying step of drying with hot air at 100 ℃ ~ 119 ℃, and a second drying step of drying for 1-2 hours at 120 ℃ ~ 140 ℃.

In the coating step, SiO ₂ , TiO ₂ , Ti, ZrO ₂ may be sequentially heated and repeatedly formed on the surface of the material to be coated by heating with an electron beam, and SiO ₂ and TiO ₂ may be alternately deposited to be formed. .

The coating method as described above improves the adhesion of the coating material in the subsequent coating step by immersing the surface of the coating material in a strong alkaline aqueous solution.

In addition, by removing the foreign matter by rinsing the surface-treated material to be treated in the first rinsing step, and by removing the foreign matter by ultrasonic cleaning in the second rinsing step to improve the adhesion of the coating material.

 In addition, in the first drying step of drying with hot air at 100 ° C. to 119 ° C., water is removed by dropping and evaporating water from the surface of the coated material with hot air, and heated to a temperature higher than the first drying step in the second drying step. Evaporate completely.

By drying the coating material at 100 ℃ or more as described above can be provided at a temperature similar to the temperature in the vacuum chamber of the subsequent coating step to reduce the coating time.

In addition, by heating the plurality of coating materials with the electron beam by the electron gun in the coating step, it is possible to heat only the coating material selected from coating materials such as SiO ₂ , TiO ₂ , Ti, ZrO ₂ .

After the selected coating materials are alternately deposited and coated, ITO (Indium Tin Oxide) for the electromagnetic shielding is deposited on the surface of the final coating material, and further HT-100 is deposited on the surface of the ITO (Indium Tin Oxide) to prevent water film And to prevent static electricity.

Finally, visual inspection and coating-coated material to be finished and dried at 90 ℃ ~ 110 ℃ to enhance the bonding of the deposition coating materials.

On the other hand, referring to Figures 2 and 3 showing a multi-coated metal product prepared by the method, which is a base 100 of the metal immersed in an alkaline aqueous solution and the surface of the etching, and a plurality of the base 100 The coating materials 101 to 104 alternately have a structure in which a coating layer 109 is formed, and an indium tin oxide (ITO) layer 105 is deposited on the surface of the coating layer 109.

In addition, on the surface of the indium tin oxide (ITO) layer 105, HT-100 106 is further formed to prevent static electricity and water film.

The coating layer 109 is SiO ₂ (101), TiO ₂ (102), Ti (103), ZrO ₂ (104) as shown in FIG. May be deposited sequentially, and also SiO ₂ 101, TiO ₂ (selected among SiO ₂ 101, TiO ₂ 102, Ti 103, ZrO ₂ 104, as shown in FIG. Only 102 can be deposited sequentially. In addition to the coating material SiO ₂ (101), TiO ₂ (102), Ti (103), ZrO ₂ (104) may be formed by depositing at least two or more.

In this way, the multi-coated metal product is decorated with various colors depending on the type of coating material deposited according to the viewing angle, thereby improving decorativeness.

When such a multi-coated metal product is applied to the surface decorative metal plate of the mobile phone, as shown in Figure 6 further improves the decorability.

In addition, the ITO (Indium Tin Oxide) layer 105 is deposited on the surface of the coating layer 109 is formed.

In addition, when the multi-coated metal of the present invention is employed in a product that generates electromagnetic waves, such as a mobile phone, it shields the electromagnetic waves by ITO (Indium Tin Oxide) and HT-100 and prevents static electricity, thereby allowing consumers to further improve the reliability of the product. Promote.

Hereinafter, a metal multi-coating apparatus of an embodiment of the present invention will be described.

4 and 5, the coating apparatus includes a surface treatment etching bath 10 for receiving an alkaline aqueous solution and removing foreign matter from the surface of the metal to be coated 100, and the surface to be coated 100. The first rinsing tank 20 to rinse the alkaline aqueous solution is accommodated, the second rinsing tank 30 for rinsing the rinsed coated material and the pure water is received and employing an ultrasonic vibrator, and the rinsed coated material to hot air A hot air blower 40 for drying, and a first oven 50 for drying the hot air dried coating material at 120 ℃.

In addition, at least two coating materials (61, 62, 63, 64) and the dried coating material 100 is located and the vacuum chamber 66 is maintained at 90 ℃ ~ 110 ℃, the chamber ( 66, which has an electron gun 65 which emits an electron beam which is housed in the substrate 66 and sequentially heats each of the coating materials 61, 62, 63, 64 and sequentially deposits on the surface of the coating material 100. And a coater 60.

In addition, a second oven for drying the coated material to be coated at 90 ℃ ~ 110 ℃.

SiO ₂ , TiO ₂ , Ti, ZrO _2, and the like may be used as the coating materials 61, 62, 63, and 64, and at least two or more of them may be selected and used in the apparatus of the present invention.

Such a coating apparatus is a surface treatment of the metal 100 to be coated in the alkaline aqueous solution of the etching bath 10, to wash the corroded material 100 in the primary rinsing tank, to the ultrasonic vibration in the secondary rinsing tank Cleaning by means of removing foreign matter to improve the adhesion of the coating material.

In addition, the rinsed coated material 100 is dried while passing through the first oven 50 of 100 ℃ ~ 119 ℃, the dried coating material 100 is a vacuum of 120 ℃ ~ 140 ℃ of the coating machine 60 After being accommodated in the chamber 66, the coating materials 61, 62, 63, 64 are selectively heated with an electron beam by the electron gun 65 to be sequentially deposited on the surface of the coating material 100.

Subsequently, indium tin oxide (ITO) and HT-100 are sequentially deposited on the surface of the coating material finally deposited in the chamber 66 to shield electromagnetic waves and prevent static electricity.

Then, it is dried at about 90 ℃ ~ 110 ℃ to increase the bonding strength of the coating materials deposited on the multi-coated material (100).

In the above embodiment, the metal to be coated may be various metals such as aluminum, brass, and the like, and the metal product may be applied to decorative metal products such as name plates.

The present invention as described above is not limited to the above embodiments without departing from the spirit and scope of the present application can be practiced with a number of modifications.

The present invention as described above has the following advantages.

First, the surface of the metal is surface-treated in a yalkalic aqueous solution, and the coating material of various colors is repeatedly laminated to deposit coating to realize various colors according to the time, thereby improving decorativeness.

Second, indium tin oxide (ITO) is deposited on the surface of the final coating material to shield electromagnetic waves.

Third, by further depositing HT-100 to prevent water film and static electricity.

Fourth, adhesion of the coating material is improved by etching the surface of the metal to be coated in an alkaline aqueous solution.

Fifth, as the coating material 100 is dried at a high temperature of 120 ° C. to 140 ° C. in the secondary drying (first oven), the coating time is shortened by supplying it to the chamber.

Claims (10)

A surface treatment step of removing the foreign matter from the surface of the coating material by immersing the metal coating material in an alkaline aqueous solution; A first rinsing step of rinsing the surface-treated material to be coated with alkaline water; A second rinsing step of ultrasonically cleaning the first rinsed coated material in pure water; A drying step of drying the second rinsed coated material; A coating step of placing the dried coated material in a vacuum chamber of 90 ° C. to 110 ° C. and heating at least two or more coating materials sequentially with an electron beam and sequentially depositing them on the surface of the coated material; Multi-coating method of a metal, characterized in that it comprises a finish drying step of drying the coated material to be coated at 90 ℃ ~ 110 ℃. The method of claim 1, further comprising depositing indium tin oxide (ITO) for shielding electromagnetic waves on the surface of the final coating material deposited on the coating material. The method of claim 2, wherein HT-100 is further deposited on the surface of the indium tin oxide (ITO). 4. The method of claim 1, wherein the coating material is at least two selected from SiO ₂ , TiO ₂ , Ti, and ZrO _{2. 5} . The method of claim 4, wherein the drying step comprises a first drying step of drying with hot air at 100 ℃ ~ 119 ℃, and a second drying step of drying for 1-2 hours at 120 ℃ ~ 140 ℃ Multi coating method. A base of metal immersed in an alkaline aqueous solution and subjected to etching surface treatment; A coating layer in which a plurality of coating materials are alternately formed on the base; A multi-coated metal product, characterized in that the indium tin oxide (ITO) layer is formed on the surface of the coating layer deposited. The multi-coated metal product according to claim 6, wherein the coating material is at least two selected from SiO ₂ , TiO ₂ , Ti, and ZrO ₂ . The multi-coated metal product according to claim 6 or 7, wherein HT-100 is further formed on the surface of the indium tin oxide (ITO) layer to prevent static electricity and water film. A surface treatment etching bath which contains an alkaline aqueous solution and removes foreign substances from the surface of the metal coating material; A first rinsing tank for rinsing the surface-treated material and receiving an alkaline aqueous solution; A second rinsing tank for rinsing the rinsed coated material and receiving pure water and employing an ultrasonic vibrator, A hot air dryer for drying the rinsed coated material with hot air; A first oven device for drying the hot air dried material to be coated at 120 ° C., At least two coating materials and the dried coated material are placed and maintained in a vacuum chamber maintained at 90 ° C. to 110 ° C., which are accommodated in the chamber and sequentially heat each coating material to sequentially deposit on the surface of the coated material. A coater having an electron gun that emits an electron beam, Multi-coating device of a metal, characterized in that provided with a second oven for drying the coated material to be coated at 90 ℃ ~ 110 ℃ The multi-coating apparatus of claim 9, wherein the coating material is at least two selected from SiO ₂ , TiO ₂ , Ti, and ZrO ₂ .

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