JPH02198899A - Partial coloring method - Google Patents

Abstract

PURPOSE:To obtain a good color pattern by forming the recessed groove pattern corresponding to the color pattern to the surface of a metal material by etching and filling the recessed groove pattern with paint to forcibly press said paint and removing the protruded paint and releasing an etching protective film. CONSTITUTION:An etching protective film 4 is applied to the surface of a metal material 1 and exposed to light using a negative and developed to remove the etching protective film 4 at the place corresponding to a color pattern 3. When etching is performed using an etching solution, the recessed groove pattern 5 corresponding to the color pattern 3 is formed to the surface of the metal material 1. The etching protective film 4 is left as it is and the recessed groove pattern 5 is filled with paint. A spatula like body 6 is slid along the surface of the etching protective film 4 under pressure to forcibly press the paint 2 to the recessed groove pattern 5 and the paint 4 protruding on the etching protective film 4 is removed. The etching protective film 4 is released and removed using a release agent and the color pattern 3 made by the paint is formed to the surface of the metal material 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a partial coloring method used for, for example, patterning decorative materials and marking scale materials.

[Conventional technology]

Conventionally, this type of partial coloring method involves applying a paint 2 to the surface of a metal material 1 such as a decorative material or scale material by screen printing, etc., as shown in Figure 8, and applying the paint to letters, figures, symbols, scales, decorative patterns, etc. It is known to form a colored pattern 8 of.

[Problem to be solved by the invention]

However, in the case of this partial coloring method, since the paint 2 is only attached to the flat surface of the metal material 1, it is easily affected by external forces, and the paint peels off easily, causing discoloration and markings on the patterns and scales. etc. may disappear.

[Means to solve the problem]

The purpose of the present invention is to solve these inconveniences, and its gist is to apply paint to the surface of a metal material and use the paint to form colored patterns such as letters, figures, symbols, scales, decorative patterns, etc. , a concave groove pattern corresponding to the colored pattern is formed on the surface of the metal material by an etching means, a paint is filled in the concave groove pattern with the etching protective film left as is, and the paint is pressed into the concave groove pattern by a suppressing means. - a partial coloring method characterized in that after the paint is forcibly pressed into the etching protective film, the paint protruding onto the etching protective film is removed by a removing means, and the hindlimb etching protective film is peeled off with a release agent; .

〔Example〕

1 to 7 show an embodiment in which the present invention is applied to numbering on a stainless steel scale. First, as shown in FIG. 1, an etching protective film 4 is etched on the surface of a metal material 1, in this case a stainless steel material.
Apply.

For example, the etching protective film 4 is formed to have a thickness of about 5 μl.

Next, as shown in FIG. 2, the etching protective film 4 is removed from the portions corresponding to the colored patterns 3 by photosensitive development using a negative film.

Next, as shown in FIG. 3, when etching is performed using an etching means, that is, an etching solution, only the areas where the etching protection film 4 is not present are etched, thereby forming a groove pattern 5 corresponding to the colored pattern 3 on the surface of the metal material 1. be done.

For example, the groove pattern 5 having a depth of about 30 μm is formed.

Next, as shown in FIG. 4, while leaving the etching protective film 4 as it is, paint 2 is applied to the groove pattern 5 by screen printing or the like.
Fill it with.

Next, as shown in FIG.
After the paint 2 is forcibly pressed into the groove pattern 5, the paint 4 protruding onto the etching protection film 4 is scooped out and removed by a removing means, in this case a receiving spatula-like body 7.

Next, as shown in FIG. 6, the etching protective film 4 is peeled off using a peeling agent, in this case an alkaline solvent.

As a result, a colored pattern 3 of the paint 2 is formed on the surface of the metal material 1, as shown in FIG. 7, for example.

According to this embodiment, the groove pattern 5 is formed on the surface of the metal material 1 by the etching means, and the paint 2 is filled into the groove pattern 5 while leaving the etching protection film 4 as it is. It is possible to obtain a masking effect on non-colored parts, which makes the coloring pattern 3 more accurate.
can be obtained, and since the paint 2 is filled in the groove pattern 5, peeling and discoloration of the paint 2 due to external force etc. can be suppressed, and furthermore, the paint is forcibly pressed into the groove pattern 5 by the pressing means. , the adhesion between the inner surface of the groove pattern 5 and the paint 2 can be improved, and when the etching protective film 4 is peeled off, it can be prevented from being peeled off along with it or peeled off due to external force, etc., and a good colored pattern can be obtained. 3, and the paint 2 protruding onto the etching protective film 4 is removed by a removing means, and then the etching protective film 4 is removed.
Since the etching protective film 4 is peeled off, the etching protective film 4 can be easily peeled off by the release agent, and a good colored pattern 3 can be obtained.

In the above embodiment, the spatula-shaped body 6 is used as a suppressing means, but it is also possible to press a flat plate downward from above the surface of the metal material 1 to forcibly press the paint 2 into the groove pattern 5, or as a removing means. Although the receiving spatula-like body 7 can be used, the protruding paint 2 can also be sucked up by a suction mechanism, or other suitable means may be adopted.

Furthermore, the metal material l is not limited to stainless steel scales, but can also be applied to other decorative materials, and can also be applied to other partial coloring.

〔Effect of the invention〕

As described above, in the present invention, a groove pattern is formed on the surface of a metal material by etching means, and the groove pattern is filled with paint with the etching protection film left as is, so that the etching protection film has a masking effect on the non-colored parts. This makes it possible to obtain a more accurate coloring pattern, and since the paint is filled in the groove pattern, peeling of the paint and discoloration due to external forces can be suppressed. Since it is forcibly pressed into the pattern, it can improve the adhesion between the inner surface of the concave groove pattern and the paint, prevent it from peeling off along with the etching protective film or from being peeled off by external horns, etc., and maintain a good coloring state. Moreover, since the paint protruding onto the etching protective film is removed by a removing means and then the etching protective film is peeled off, the etching protective film can be easily removed by the remover, and a good colored pattern can be obtained. Obtainable.

As described above, the intended purpose can be fully achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS.
The figure is a cross-sectional view for explaining the present invention in detail, and FIG. 8 is a cross-sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Metal material, 2... Paint, 3... Colored pattern, 4... Etching protective film, 5... Concave groove pattern. 1999 1

Claims (1)

[Claims] When a paint is applied to the surface of a metal material and a colored pattern such as letters, figures, symbols, scales, decorative patterns, etc. is formed using the paint, a concave groove pattern corresponding to the colored pattern is formed on the surface of the metal material by etching means. , the etching protective film is left as it is, the groove pattern is filled with paint, the paint is forcibly pressed into the groove pattern by a pressing means, and then the paint protruding onto the etching protective film is removed by a removing means. A partial coloring method characterized in that the etching protective film is removed, and then the etching protective film is peeled off using a release agent.