JPH0514299Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a paint surface sample board.

<Conventional Technology> One of the coating qualities of the outer panel of a vehicle is the "coating surface." In order to evaluate the paint surface, there is a paint surface sample board.

Regarding the surface of the paint, quoting from Kozo Sato, Overview of Paint Properties Engineering, published by Riko Publishing in 1976, page 45:
It has been known for a long time that eddy flow occurs in the coating liquid during the evaporation process of the solvent.During the drying process of the paint, as the solvent evaporates from the coating liquid, it causes spots such as citrus skin and pinholes on the painted surface. As shown in Figure 6, in the coating film 2 on the base 1, the yuzu skin A remains with gentle unevenness like orange skin on the painted surface, and when this yuzu skin A is closely observed, even finer unevenness B can be seen.
It is explained that this is acceptable.

By the way, conventional paint surface sample boards have been produced using a method similar to the method used to paint vehicle exterior panels, as well as the production of original paint plates. For example, in the case of solid color, the 7th
As shown in the figure, an epoxy paint or the like was electrodeposited 4 on a steel plate 3, an intermediate coat 5 of an epoxy-modified alkyd paint or the like was applied thereon, and a top coat 6 of an alkyd paint or the like was applied thereon. In the case of metallic color, as shown in Fig. 8, the steps up to the intermediate coating 5 are the same, and a metallic 7 such as acrylic paint is applied on the intermediate coating 5, and then acrylic paint is applied on top of that. Clear 8 was applied.

<Problems to be solved by the invention> The above-mentioned conventional coating surface sample board not only requires a large number of man-hours, but also has poor reproducibility, and the surface of the coating surface called yuzu skin, which is exactly the same as the original painting board, is difficult to reproduce. There was a problem with the shape.

In view of the above-mentioned problems, the present invention provides a painted surface sample board that faithfully reproduces the surface shape of the painted surface that is exactly the same as that of the original painted board.

<Means for solving the problem> The painted surface sample board of the present invention is produced by molding the original painting board in a mold using silicone rubber, and applying transparent or colored heat containing liquid raw materials as the main component to the molded space. It is made by injecting and curing a curable resin to form the same coating surface as the original plate.

<Function> The above-mentioned present invention provides a coated surface sample board that embodies the surface shape of the coated surface that is exactly the same as that of the original coated board, and can be manufactured easily and in a short time.

<Embodiments> Examples of the present invention will be described below with reference to FIGS. 1 to 5. As shown in Fig. 1, the present invention uses a transparent or colored thermosetting resin (hereinafter referred to as thermosetting resin) whose main component is a liquid raw material such as urethane, epoxy, or unsaturated polyester to coat the coating surface 11 that is exactly the same as the original plate. It is made of hardening resin (abbreviated as curable resin). For solid colored products that require weight reduction, the colored thermosetting resin layer 1 shown in Fig. 1 is used.
0 alone is used as a painted skin sample board. If rigidity is required, a steel plate 12 and a colored thermosetting resin layer 10 are combined as shown in FIG. Furthermore, in the case of a color that does not have concealing properties, as shown in FIG.
The colored thermosetting resin layer 10 is combined with the colored thermosetting resin layer 10. In the case of a metallic color, as shown in FIG. 4, a transparent thermosetting resin layer 10 is combined with a steel plate 12 coated with a metallic 14 such as acrylic paint.

The preparation of the coating sample board according to the present invention will be explained with reference to FIG. 5. First, as shown in A,
A sheet-shaped magnet 22 is attached to the back surface (steel plate surface) of the original plate 21 to be painted, and this is set in the formwork 20. On the other hand, the back surface of the sheet-like magnet 22 (the surface to which the original painting plate is not attached) is coated with an adhesive in advance to bond the magnet and the silicon mold. Then,
As shown in b, silicone rubber 23 is placed inside the formwork 20.
is injected, and the silicone rubber 23 is cured as shown in c. Thereafter, as shown in d, after removing the formwork 20, the mold of the cured silicone rubber 23 is cut at the portion of the original coating plate 21 to be divided into molds.
At this time, the magnet 22 is attached to one silicone rubber 23
The coating original plate 21 is easily released from the silicone surface.

Next, as shown in E, a steel plate 12 is placed on the surface of the magnet 22.
Attach. At this time, in the case of a metallic paint sample board, the same metallic paint as the outer panel of the vehicle is applied on the surface of the steel plate 12 and hardened in advance.

After that, as shown in F, when the two molds of the silicone rubber 23 are matched, the space 2 is formed.
4 is formed.

Silicone rubber 2 to which the magnet 22 is adhered
On the surface of the other split mold of the silicone rubber 22, which faces the magnet surface of the split mold No. 3, the same coating surface as the original coating plate 21 is molded.

A colored thermosetting resin 25 is injected into this space 24 as shown in G, and after it is cured, the sample plate is taken out.

The mold made of silicone rubber 23 has excellent mold releasability, which is a characteristic of silicone rubber itself, and can be released from the mold without using a mold release agent. In addition, the mold of silicone rubber 23 has excellent fluidity and easily flows into minute gaps, making it possible to faithfully mold the painted skin.
It has a low shrinkage rate and excellent dimensional stability, making it extremely effective as a mold for making paint sample boards.

When molding a sample plate of the colored thermosetting resin layer 10 shown in FIG. 1, a release agent is applied to the surface of the magnet 22, and the colored thermosetting resin 25 is injected into the space 24. It can be obtained by Also, the second
When forming a sample plate combined with the steel plate 12 shown in the figure or the steel plate 12 coated with the solid 13 shown in Fig. 3, the steel plate 12 is magnetically attracted to the magnet 22 and set, and then the space 24 is colored. Thermosetting resin 25 is injected. Furthermore, when molding a sample plate combined with the steel plate 12 coated with the metallic 14 shown in FIG. obtained by injecting

<Effects of the invention> As described above, the present invention provides a painted surface sample board that has exactly the same painted surface (yuzu skin) as the painted original board, and furthermore, its production is possible using liquid raw materials as a direct model of the painted original board. This is a reproduction molded by injecting a thermosetting resin whose main component is , and has the advantage that it can be manufactured easily and in a short time, and can be reproduced in a predetermined number of copies.

[Brief explanation of the drawing]

Figures 1, 2, 3, and 4 are cross-sectional views showing various types of paint surface sample boards according to the present invention, Figure 5 is an explanatory diagram of the method for producing sample boards according to the present invention, and Figure 6 1 is a cross-sectional view illustrating the condition of the paint surface, and FIGS. 7 and 8 are cross-sectional views showing conventional paint surface sample boards. 10... Thermosetting resin layer, 11... Painted surface, 1
2...Steel plate.

Claims (1)

[Scope of utility model registration request] A painted thick plate is molded using silicone rubber in a formwork, and a transparent or colored thermosetting resin mainly composed of liquid raw materials is injected into the molded space and cured to form the same coating surface as the original painted plate. A sample board of the painted surface.