JPH0450277B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for surface treatment of ceramics or glass, and in particular, a method for painting the surface of the material and creating a three-dimensional effect such as a matte surface or a matte surface through blasting. The present invention relates to a method for forming a surface pattern with a texture.

(Prior art) For example, in order to give the surface of pottery a satin finish or a matte finish, the surface of the pottery has traditionally been corroded using hydrofluoric acid, or the traditional gold rot treatment is carried out by attaching liquid gold, gold leaf, etc. A method called shi is used.

In addition, attempts have been made to sandblast the surface of the substrate to form a satin pattern, but all of these methods have had technical problems in masking areas where the satin pattern is not formed. That is,
Conventionally, to untreated surfaces, it was usual to apply a latex called ceramic glue with a brush or the like and dry it to form a masking layer, or to use a masking mold. However, such a masking method requires the hands of a skilled person and is not only inefficient, but also often causes the boundaries of the satin fabric to be disturbed, resulting in a loss of aesthetic appearance.

Furthermore, in recent years, as described in Japanese Patent Application Laid-Open No. 55-85434, after the pattern of the pattern printing layer is transferred to the object surface by transfer means using ordinary transfer paper, a protective film of the protective transfer paper for sandblasting is applied in advance. It has been proposed to perform side blasting after stacking the pattern printing layer so as to accurately cover the pattern according to the design of If it is done in two steps,
First, of course, the process is two steps, so
This is complicated and reduces production efficiency. As well,
When forming a masking layer, it is necessary to accurately cover the pattern on the paint layer, which is an extremely difficult process and requires skill, and there is a high risk of producing defective products. Depending on the shape, it is difficult to form a masking layer, and in some cases it may be impossible, or even if it is possible, it may not be beautiful.There are various problems, and it has not been implemented in reality. .

(Problems to be Solved by the Invention) In view of the above points, the present invention enables masking by extremely simple and reliable means.
Moreover, the main purpose is to propose a practical and efficient method that can be carried out along with the painting process.

(Means for Solving the Problems) That is, the present invention includes forming a paint layer on a release paper to form a predetermined painted surface, and then covering the entire upper surface of the release paper that covers the paint layer with a cover coat layer. At the same time, a masking layer made of an elastic paint is partially formed on the upper surface of the cover coat layer to form a predetermined non-blast-treated surface, thereby obtaining a transfer paper that serves as a transfer portion, and the transfer portion of the transfer paper is made of ceramic or After being transferred to the surface of the glass material, the transfer portion is subjected to a blasting treatment on the surface of the transferred material, and then,
The present invention relates to a method for surface treatment of ceramics or glass, characterized in that the material is fired without removing or removing the masking layer.

(Examples) The present invention will be described below along with examples with reference to the attached drawings.

Fig. 1 is an enlarged end view showing an example of the transfer paper used in this invention, Fig. 2 is an enlarged end view of the transfer paper with the transferred portion transferred to the surface of the material, and Fig. 3 is after the blasting process. End view of the same part showing the condition,
FIG. 4 is an end view of the same portion that becomes the surface of the product after firing.

First, in the present invention, a transfer paper 10 as shown in FIG. 1 is used. That is, this transfer paper 10 has a paint layer 12 on a release paper 11 and a cover coat layer 13 on the entire upper surface of the release paper covering the paint layer, and a predetermined non-blasting treatment on the upper surface thereof. Transfer part 1 having a masking layer 15 made of elastic paint to form a surface
6 is formed. A transfer paper in which a paint layer 12 and a cover coat layer 13 are formed on a release paper 11 is conventionally known. As the transfer paper 10 used in the present invention, this conventionally known transfer paper with a masking layer 15 formed thereon can be advantageously used.

Conventionally known release paper 11, paint layer 12, and cover coat layer 13 are used, and are usually formed into a predetermined pattern by a method such as screen printing.

The masking layer 15 is formed by partially applying an elastic paint such as a rubber-based paint to a predetermined location on the upper surface of the cover contrast layer 13 by means such as screen printing. The thickness of the masking layer 15 is approximately 10 to 25 microns in the embodiment.

In the transfer paper 10, the transfer portion 16 is released from the release paper 11 in water and transferred to a predetermined position on the surface 25 of a ceramic or glass material 20, as shown in FIG. 2, as in the prior art. At this time, the cover coat layer 12 of the transfer paper 10 is usually extremely thin and can be stretched sufficiently even with lukewarm water to follow the shape of the product, so the masking layer formed on the top surface also follows the stretchability of the cover coat layer and forms a complex shape. Even in the shape of a product, accurate masking can be performed at a predetermined position and in correspondence with a predetermined paint layer.

Next, the material 20 onto which the transfer portion 16 has been transferred is subjected to a blasting process using a sandblasting device.
In the example, the number of the abrasive material to be blasted is 150.
I used something around #250.

Through this blasting step, as shown in FIG. 3, the surface of the material 25 on which the masking layer 15 is not formed is scraped off to form recesses 30 having finely uneven surfaces. In the example, the depth of the recess 30 is approximately 20μ.

It goes without saying that the portion of the transfer portion where the masking layer 15 is not formed, that is, the portion of the cover coat layer 13, is scraped off by the blasting process.

After the blasting step is completed, the material is fired without removing or removing the masking layer 15 of the transfer portion, and the pigment of the paint layer 12 is baked onto the surface of the material.

In this baking process, the masking layer 15 and cover coat layer 13 of the transfer part 16 are heated to high temperature (700°C).
~800℃), but
The material or thickness of the masking layer 15, etc., and the requirements of the factory environment, etc.
It may be better to remove all or part of 5.

The end face of the surface portion of the material after the firing process is illustrated in FIG.

As can be easily understood from the figure, according to the method of the present invention, a three-dimensional pattern is formed on the surface of the material 20, consisting of three layers: a pattern layer 12A made of paint, a general surface portion 25, and a blasted concave surface portion 30. A pattern is formed.

(Effects) As illustrated and explained above, according to the present invention, first, the masking layer can be formed using a planar printing means at the transfer paper stage, so it can be formed accurately and beautifully. It's simple and easy to do.

Furthermore, the masking layer is formed on the top surface of the cover coat layer, which is extremely thin and has the ability to stretch even in lukewarm water and follow the shape of the product. It is possible to perform accurate masking at a predetermined position and in correspondence with a predetermined paint layer.

Further, once the transfer section is transferred from the transfer paper, the process can be carried out in the same manner as in the past, and this process does not require any special skill and can be carried out using conventional equipment or operations.

As described above, according to the present invention, the masking layer is formed by printing such as screen printing without going through the conventional process of manually applying the masking material by an expert, so it is possible to create a masking layer with a complex pattern or novelty. You can easily create geometric patterns, etc.
Blasting creates a clear and beautiful boundary between the pear surface and the untreated surface, making it possible to significantly improve the surface design of ceramics or glass.

[Brief explanation of the drawing]

Fig. 1 is an enlarged end view showing an example of the transfer paper used in this invention, Fig. 2 is an enlarged end view of the transfer paper with the transferred portion transferred to the surface of the material, and Fig. 3 is after the blasting process. End view of the same part showing the condition,
FIG. 4 is an end view of the same portion that becomes the surface of the product after firing. 10... Transfer paper, 11... Release paper, 12... Paint layer, 13... Cover coat layer, 15... Masking layer, 20... Material, 25... Material surface, 30
...Blast concave part.

Claims (1)

[Claims] 1. After forming a paint layer 12 on a release paper 11 to form a predetermined painted surface, the entire upper surface of the release paper that covers the paint layer is covered with a cover coat layer 12, and a predetermined blast coating is applied to the upper surface of the cover coat layer. A masking layer 15 made of an elastic paint is partially formed to form a treated surface to obtain a transfer paper 10 with a transfer portion 16, and the transfer portion 16 of the transfer paper is transferred to the surface of a ceramic or glass material. A method for surface treatment of ceramics or glass, characterized in that the surface of the material onto which the transfer portion has been transferred is subjected to a blasting treatment, and then the material is fired without removing or removing the masking layer 15.