JPS60106568A - Painting method in two tones of metallic color of car body and masking material used for said method - Google Patents

Abstract

PURPOSE:To reduce the number of processes, and to obtain a beautiful surface painted in two tones without any chapping by painting the surface to be coated with one color, drying and masking, then painting with the other color, removing the masking, painting the whole surface, and baking. CONSTITUTION:An A color part is painted I in an A color, and dried II. The A color part is masked III with an incoherent masking material, and a B color part is painted in a B color IV. The masking is removed V thereafter. Then the whole surface painted in A and B colors is clear-painted VI, and baked VII. The total man-hours can be reduced in this way, and the release of the coated film when the masking is removed is prevented. A beautiful two-tone painting can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-tone metallic color coating method for automobile bodies and a masking material used in the method.

In the metallic color painting of automatic mm bodies, I! When performing two-tone painting of different colors A and B as shown in Figure 1, conventionally, as shown in the process diagram of Figure W42, A color painting is performed and the painted surface is improved in chemical resistance and repairability. And clear coating 2 for the purpose of improving the finish quality, and baking this 3
After applying KB colored part water polishing 4, water drying 5 and A@j, 11
Perform masking 6, perform 8-color painting 7, apply clear coating to the painted surface, bake this 9, and remove the masking.
This was a painting method that involved several steps, as it required O. and,
The masking material used in the process of masking 6 for the A color area was an adhesive type masking material with single-sided adhesive tape adhered to its edge.

According to this conventional method, as shown in FIG. 114, a clear coating 2 step is performed in which a clear coating layer 2a is applied to the lower layer of the B8 coating. This is to prevent the surface of the B color paint from becoming rough due to the clear paint applied to the lower layer of the B color paint, and the rough skin spreading to the clear paint layer 8aVc as well, as shown in Figure 3. Yes, therefore, along with the above-mentioned clear coating 2.8, the baking step 3.9 also requires two steps, and in particular, the B color adhesion in the eight-color coating step 7 decreases with the baking step 3. Therefore, four water-refining processes and five water-drying processes were required in the B colored part, and the total number of processes was ten.

In addition, since the masking material is adhesive, it should be applied to the unbaked paint surface using adhesive tape when removing the masking material.
This was unsuitable because the unbaked paint film that had been coated with a coating sometimes peeled off.

The present invention improves the above-mentioned conventional problems, and eliminates the process of baking 3, water-polishing the B-color part 4, and water-drying 5 by eliminating the clear coating of the lower layer of the conventional B color paint, thereby reducing the total number of man-hours. The objective is to reduce the number of clear coating steps and the amount used, as well as to prevent peeling of the coating film during masking removal and to obtain a beautiful two-tone painted surface without roughness.

The coating method of the present invention, in metallic color two-tone painting, includes a step of painting a painted surface of one color, a step of drying it, and a step of painting the painted surface of the one color with a non-stick masking material for 72 steps. 7, a step of painting the painted surface of the other color, a step of removing the masking material, a step of clear coating the entire painted surface, and a baking step.

In addition, the non-adhesive masking material of the present invention used in the above-mentioned painting method has a flexible wedge-shaped magnet made of rubber or plastic attached to one end of the masking material, and the surface of the wedge-shaped magnet is attached to one end of the masking material. A fluororubber coating is applied, and a magnet is attached to the other edge of the masking material.

Embodiments of the present invention will be described below with reference to FIGS. 5 to 10.

Is the painting method A8 according to Figure 1? A color painting is done,
This is dried, the A color area is masked with a non-adhesive masking material, the B color area is then painted with B color, and then the masking is removed. Afterwards KA,
B color all painted surfaces Apply Yer painting v1 on the painted surface and bake vil
It is something to do.

The above-mentioned painting method of the present invention includes a drying step (2) after the A color coating, and masking II is performed on the A color area, and the A color dust 13 (see Fig. 6) is applied from the sprayed area to the B color parting area. By directly painting B color without baking A color,
The conventional clear coating layer 2a for dust prevention in color A and the accompanying processes of baking 3, water polishing 4 for the color B, and water drying 5 have been removed, and the clear coating layer 14 on the surface is removed as shown in Figure 1. A smooth, smooth finish with no roughness can be obtained.

1. The non-adhesive masking material used in the painting method of the present invention is a masking material 1 made of polylaminate paper, Teflon sheet, etc., as shown in FIGS. 7 and 8.
1 on one edge of 5. A wedge-shaped magnet 16 having flexibility such as rubber or plastic is attached, a fluororubber coating 17 is applied to the surface of the wedge-shaped magnet 160, and a magnet 19 is attached to the other edge of the masking material 15. be.

What is shown in Figure 9 and IKIO diagram is the wedge-shaped magnet body 1.
6 edges it - a plate 18 bent at a required angle is formed.

One end of this masking material (■) is magnetically attracted to the A and B color separation parts of the object W to be coated using a wedge-shaped magnet 16, and the other end is wrapped around the back surface of the object W to be coated and magnetically attracted by a magnet 19. It is. Therefore, the masking material 15 is easily removed from the object W to be coated, and peeling of the unbaked coating film as in the conventional adhesive type is prevented.

In addition, the wedge-shaped magnet body 16 formed with the plate 18 has the effect of reliably preventing bleeding at the parting part than the blade 18Vc.

As described above, according to the present invention, it is possible to reduce the number of processes and paint costs without deteriorating the coating quality, and it is also possible to install and remove masking materials easily. Masking materials lose their adhesive strength during the process and cannot be reused, but in the case of the present invention, they can be used repeatedly, saving on masking material costs, and the magnetic attraction of the wedge-shaped magnet ensures that the masking material is firmly attached to the parting part. Since the masking material is adsorbed, there is no peeling of the masking material, and the parting line can be secured.

[Brief explanation of drawings]

Figure 1 is a side view of a two-tone painted automobile body, Figure 2 is a diagram of the conventional painting process, Figure 3 is a cross-sectional view explaining the problems with conventional painting, and Figure 4 is a cross-sectional view of the painting by the conventional painting method. Figure 5 is an uninvented painting process diagram, Figure 6 is a sectional view of painting by the painting method of the present invention, Figure 7 is a perspective view showing the installation state of the masking material of the present invention, and Figure 8 is 1 skin. FIG. 9 is a perspective view showing a state in which a masking material according to another embodiment is attached, and FIG. 1θ is a side view of the same masking material. l...A color painting, I...-drying, ■...A color part 1v
...8-color painting, V...Masking removal %v1...
Clear coating, 4...Baking, 15...Masking material, 16...Wedge-shaped magnet, 17...Fluororubber coating% 18...Blade, 19...0 Magnet. 11 Figure 5 A 13

Claims (1)

[Claims] Ex) In metallic two-tone painting, the steps of painting a painted surface of one color, drying this, and masking the painted surface of said one color with a non-stick masking material. A two-tone metallic color painting method for an automobile body, characterized by combining a step of painting a painted surface of the other color, a step of removing the masking material, a step of clear coating the entire painted surface, and a step of baking. . -2) A flexible wedge-shaped magnet made of rubber or plastic is attached to one edge of the masking material, a fluororubber coating is applied to the surface of this wedge-shaped magnet, and a magnet is attached to the other edge of the masking material. A masking material for metallic two-tone painting of automobile bodies with attached bodies.