JPH09155277A - Decorating method by coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To create a new figure which is different from conventional figures by charging a coating material by applying specified voltage between an air gun and a rear electrode together with a coating film on a base material in such a manner that the coating film on the base material and the air gun become in electrically counter polarities to each other, and then applying the charged coating material by using the air gun. SOLUTION: In order to decorate the surface of a base material 3, first, a coating film 4 is formed on the surface of the material 3 in a coating process, and then negative charges are given to the coating film 4 and to an atomized coating material 8 to be applied by an air gun, while positive charges are given to a rear electrode 7 disposed at the opposite position to the air gun 6 about the base material 3. In this process, the voltage is preferably 60kV to 10kV. Then a liquid coating material is discharged from the air gun 6 comprising an air tube 9 and a coating material tube 10 to the base material 3, while charges are given to the atomized coating material 8 by the gun electrode so that particles of the coating material are fused to make larger particles and that these large particles deposit on the coating film 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method for decorating the surface of a material.

[0002]

2. Description of the Related Art In conventional coating, a decorative coating is applied so that the surface of the material and the coating are electrically opposite in polarity to attract each other by static electricity or a spraying action by an air gun to obtain a uniform coating thickness. If it is formed, the voltage of the static electricity is adjusted, the air pressure used for the air gun is adjusted, or the air gun is intentionally shaken. A decorative coating was formed.

[0003]

In the conventional coating method, the coating has a uniform film thickness, so that the surface cannot be changed and the coating is not interesting.

Further, even if a pattern is formed with a non-uniform film thickness by the above method, it is difficult to produce the same pattern and it becomes a manual work, so mass production is not possible and the cost becomes high. There was a drawback that it would end up.

Therefore, as a means for forming a pattern,
Although methods such as printing and transfer are used, even with these methods, the cost is inevitably high, and the patterns produced by them are also limited.

The present invention has been made in view of the above-mentioned drawbacks of the conventional decorating methods, and an object thereof is to provide a decorating method by painting which can form various patterns at low cost.

[0007]

In order to solve the above problems, the present invention provides a coating process for forming a coating film on the surface of a material, and a rear electrode provided so as to be located on the side opposite to the air gun of the material. The charge generated by applying a voltage of 60 kilovolts to 10 kilovolts between the rear electrode and the coating film of the material and the air gun is applied so that the coating film of this material and the air gun are electrically opposite in polarity. The above-mentioned coating means is applied to the coating film with an air gun so that the coating film has a non-uniform thickness, and the coating film is used to form a decorative coating film.

Alternatively, the electric charge generated by applying a voltage of 60 kilovolts to 10 kilovolts to the pair of air guns so that they are electrically opposite to each other in the coating step of forming a coating film on the surface of the material. The coating process is applied by an air gun to make the coating film non-uniform in thickness, and a decorative coating step for forming a decorative coating film for forming a pattern is used.

[0009]

[Function] The decoration method configured as described above is used for the decoration of the rear electrode and the rear electrode provided so as to be located on the opposite side of the material from the air gun after the coating film is formed on the surface of the material by the coating process. An electric charge is applied so that the paint used and the surface of the material are electrically opposite in polarity, and the paint and the material surface are electrically in the same polarity.

As a result, the paint and the material surface repel each other due to the action of static electricity, but the paint is forcibly adhered to the material surface by the air pressure of the air gun. The particles repel each other due to static electricity and the forced force of the air gun, so that the particles become large and adhere to the surface of the material to form a decorative coating.

Alternatively, a voltage is applied to the paints applied by a pair of air guns so that the polarities are opposite to each other, and a charge is applied to the paints. It is also possible for particles of paint to fuse together to form large particles that adhere to the surface of the material.

Furthermore, since the pearl pigment is mixed in the paint used in the decorating step, it is possible to form a decorative coating having a marble-like texture by the action of the pearl pigment.

Further, by controlling the voltage or the air pressure of the air gun, the size of the particles can be controlled more delicately, so that the decorative coating appropriately overlaps the coating coating to create various patterns. Is acting on.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings. In the first embodiment of the invention shown in FIG. 1 to FIG. 4, 1 is a coating process, and this coating process 1 forms a coating film 4 of uniform thickness on the surface of a material 3 fixed to a jig 2. As the method, a conventionally known coating method such as spraying a paint by an air gun or a spray, electrostatic coating, or electrodeposition coating is used.

Reference numeral 5 is a decorating step. In this decorating step 5, the paint film 4 and an atomized paint 8 which is applied in a mist state by an air gun 6.
Are electrically the same polarity, and the rear electrode 7 installed so as to be positioned on the opposite side of the material 3 from the air gun 6 is electrically opposite to the coating film 4 and the atomized coating material 8. An electric charge is added by the voltage applied to each.

In the explanation of the drawings, a negative charge is applied to the coating film 4 and the atomized paint 8 and a positive charge is applied to the rear electrode. The voltage is 60 kilovolts to 10 kilovolts. .

The charges used here are the material 3 and the atomized paint 8 as negative poles and the rear electrode as positive poles in the explanation of the drawings, but the negative poles and positive poles may be reversed, and the voltage may be reversed. Is to be changed depending on the pattern to be drawn or the distance between the air gun 6, the material 3 and the rear electrode 7.

The air gun 6 has an air tube 9 for supplying compressed air and a paint tube 10 for supplying liquid paint.
Is provided, and the supplied liquid paint is discharged as atomized paint 8 toward the material 3 by the pressure of compressed air.
At that time, the gun electrode 12 provided at the tip of the air gun 6
Charges are added by.

On the other hand, the material 3 is passed through the jig 2 and the coating film 4 is applied.
Although electric charge is added to the mist paint 8 and the coating film 4 have the same electric polarity, they repel each other. However, the mist paint 8 is agitated by the air pressure of the air gun 6 Are fused with each other in the form of mist to form large particles and adhere to the coating film 4 on the material 3 by the pressure of air.

The rear electrode 7 is formed in a rod shape or a net shape and acts so as to electrically attract the atomized paint 8 and controls the amount of the atomized paint 8 attached on the material 3.

The mist-like paint 8 which has become large particles as described above adheres to the coating film 4 of the material 3 as a decorative coating film 11. As a result, the decorative coating film 11 has a non-uniform film thickness and a voltage. , Various patterns can be drawn by controlling the air pressure.

[0022]

Different Embodiments of the Invention Next, different embodiments of the present invention will be described. In these explanations, the same components as those of the first embodiment of the present invention will be designated by the same reference numerals and duplicate explanations will be omitted.

The embodiment shown in FIGS. 5 and 6 is mainly different from the embodiment of the present invention in the decorative step 5A for forming the decorative coating 11A. The decorative step 5A is arranged in parallel. The atomized paint 8A is simultaneously applied from both of the paired air guns 6A and 6A. One of the air guns 6A has a negative pole and the other has a positive pole of 60 to 10 kilovolts. A voltage is applied, and the fog-like paint 8A is also charged with a negative pole on one side and a positive pole on the other side.

The atomized paint 8A thus charged.
The particles are fused to each other in a mist state due to the electric attraction between the particles to form large particles and adhere to the coating film 4 on the material 3 by the pressure of the air, whereby the decorative film 11A is not formed. The film thickness is uniform and various patterns can be drawn. The decorative step 5A for forming the decorative coating film 11A thus formed may be used.

The paint used in the above method may be any of dyes, pigments, transparent paints, etc. in the painting step 1, but it is effective to use a dark color such as black or dark blue as the color. In the decorating process, it is more effective to use a pigment paint or a dye paint to which a pearl pigment that has been subjected to a color-adding treatment is added, which makes it more effective, and a pattern such as marble can be easily drawn.

[0026]

Since the present invention is configured as described above, it has the following effects.

(1) Since the decorative coating has a non-uniform thickness, the surface of the coating can be changed, and an unprecedented pattern can be created by the mutual effect with the coating.

(2) Since it suffices to combine conventional coating devices, mass production is easy and it can be produced at low cost.

(3) Since the method such as printing and transfer is not required, the cost is lower.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a process of the present invention.

FIG. 2 is a cross-sectional view of a material and a coating film after a coating process.

FIG. 3 is an explanatory view showing a decoration process.

FIG. 4 is an enlarged view of a part of the decoration process.

FIG. 5 is an explanatory view of a decorating process according to another embodiment of the invention.

FIG. 6 is an enlarged view of a part of a decorating process according to another embodiment of the invention.

[Explanation of symbols]

 1 Coating process 2 Jig 3 Material 4 Coating film 5, 5A Decorative process 6, 6A Air gun 7 Rear electrode 8, 8A Atomized paint 9 Air tube 10 Paint tube 11, 11A Decorative film 12 Gun electrode

Claims (3)

[Claims] 1. A coating process for forming a coating film on the surface of a material, and a rear electrode provided on the side opposite to the air gun of this material, and the coating film of this material and the air gun are electrically reversed. The coating is non-uniform by applying the charge generated by applying a voltage of 60 kilovolts to 10 kilovolts between the rear electrode, the coating coating of the material and the air gun so that it becomes a pole by the air gun. A decorative method including a decorative step of forming a decorative coating film that forms a pattern with a uniform thickness. 2. A coating process for forming a coating film on the surface of a raw material, and applying a voltage of 60 kilovolts to 10 kilovolts to an air gun formed in a pair so that they are electrically opposite in polarity. A decorating method comprising a decorating step of forming a decorating film for forming a pattern by applying a charge-added coating material with an air gun to make the coating film have an uneven thickness. 3. The decorating method according to claim 1, wherein the paint used in the decorating step contains pearl pigment.