JPS6045079B2 - Manufacturing method of metal decorative plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention creates a three-dimensional effect by forming a pattern with a desired height and multilayers on a metal plate using a pattern material with recesses of a desired depth and multilayers. The present invention relates to a method for producing a metal decorative plate which can be easily, efficiently, and inexpensively mass-produced a metal decorative plate having a deep and exceptionally beautiful appearance.

Conventionally, methods for forming recesses with desired patterns and shapes on metal plates include photo-etching and machining.
There are two methods: to obtain a desired pattern directly on a metal plate, to obtain a pattern on a molded material, and to obtain a pattern on a molded material and then press the metal plate to transfer the pattern.

However, in this conventional manufacturing method, the depth of the cut in the metal plate or mold material is uniform, so the pattern lacks a three-dimensional effect, giving a flat and monotonous impression, and machining takes a lot of time. It had the disadvantage of requiring a high degree of skill and being inefficient. In order to solve the conventional drawbacks, the present invention has a multi-layered pattern with photo-etching on the mold material and a desired depth, thereby deepening the three-dimensional effect and creating a metal decorative plate that has an exceptionally beautiful appearance in a simple and easy way. The purpose is to mass-produce uniform products efficiently and at low cost.

The manufacturing method according to the present invention will be described below with reference to Examples.

First, as shown in FIG. 1, a photoresist (positive type) 2 is applied to a mold material 1 such as SKD4 or SKD5 whose surface has been mirror-finished or matte-finished in advance to form a photoresist film. Next, as shown in FIG. 2, a photomask 3 having a desired first pattern is brought into close contact with the mold 1 and exposed, and developed to obtain a mold with a resist formed thereon as shown in FIG. .

Next, the part of the metal plate where the resist is not formed is etched to a desired depth using an etching solution such as ferric chloride and nitric acid. (FIG. 4) Next, this mold material 1 is washed with water to remove the etching solution, and after drying, a photomask 4 having a second desired pattern is closely exposed as shown in FIG.
A desired depth and stepped layer are obtained through the development process shown in FIG. 6 and the etching process shown in FIG. Furthermore, if multiple layers are required, the above steps can be repeated to obtain multiple layers.

If you want to etch only a part, mask the other etched parts 5 as shown in Fig. 78.
Just do the etching. Next, after removing the photoresist (positive type) 2 with a release agent, as shown in FIG.
As shown in the figure, any height and pattern can be obtained on the metal plate 6.

With the above-described structure, the present invention can faithfully copy a pattern onto a metal plate, deepen the three-dimensional effect than conventional ones, and create a metal decorative plate that has a delicate and exceptional beauty in a simple and efficient manner that does not require skill. Moreover, it has the effect that uniform products can be mass-produced at low cost.

[Brief explanation of drawings]

1 to 10 are longitudinal sectional views showing the manufacturing process of an embodiment according to the present invention. 1... Mold material, 2... Photoresist (positive type), 3
...first photomask, 4...second photomask,
5...Masking, 6...Metal plate.

Claims (1)

[Claims] 1 The surface of the mold material is subjected to a photo-etching process multiple times,
A method for manufacturing a metal decorative plate, which comprises forming recesses having different depths or multi-layered layers, and using a mold material having the recesses to form a desired pattern or shape by pressing.