JPS6256117B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a partially patterned heat-resistant substrate.

A method of painting the surface of a heat-resistant base material that is versatile and has high practical value is a method in which alumina sol or silica sol is applied, and after firing, the painting is applied to the alumina layer or silica layer formed on the surface.
(Refer to JP-A-53-74907 and JP-A-54-24109.) In order to obtain a heat-resistant base material with a partially patterned pattern using this method, an alumina layer or a silica layer is formed on the entire surface of the base material. There are two methods: one is to partially form a pattern thereon, and the other is to partially form an alumina layer or silica layer and then form a pattern on that part. However, in the former case, the part of the alumina layer or silica layer on which the pattern is not applied loses transparency because of the alumina layer or silica layer, and is not suitable when transparency is desired. The latter is time-consuming because the application of alumina sol or silica sol must be done manually with a brush, and since it is in the form of a sol, it is difficult to apply a detailed pattern in parts. There was a drawback that the boundary between the coated area and the non-coated area was not clear.

As described above, an object of the present invention is to easily and clearly form a partial pattern on the surface of a heat-resistant base material, which has been difficult to form conventionally, while maintaining transparency in the area where the pattern is not formed. That is.

That is, the present invention partially prints an organic substance that burns and volatilizes at a temperature below the firing temperature on the surface of a heat-resistant base material, and then applies alumina sol or silica sol to the entire surface of the base material, and then bakes it to remove the organic substance-free areas. A heat-resistant substrate partially having a pattern, characterized in that an alumina layer or a silica layer is formed on the substrate, a pattern is formed on this layer, and the ink in the pattern is transferred to the alumina layer or silica layer by heating. It is a method of manufacturing wood.

Next, the present invention will be explained in more detail with reference to the drawings. FIG. 1 shows a cross section of the surface of the heat-resistant base material before firing in the present invention. An organic substance 2 is partially printed on the surface of a heat-resistant base material 1 such as glass, tile, enamel, ceramics, or stainless steel. Examples of such organic substances include resin binders such as ethyl methacrylate resin and butyl methacrylate resin. The portion on which the organic substance 2 is printed ultimately becomes a portion on which no pattern is formed. A screen printing method, a gravure printing method, etc. are suitable for printing the organic substance 2.

After printing the organic material 2, alumina sol or silica sol 3 is applied to the entire surface of the substrate. Coating is carried out by an appropriate method selected from conventional coating methods such as spraying, flow coating, and dipping. An inorganic pigment may be mixed into the alumina sol or silica sol 3 to be applied. When mixed, the alumina layer or silica layer 13 formed by firing becomes a layer with strong hiding properties, and when this layer is colored, the coloring of the colored ink can be enhanced. It is necessary to select an inorganic pigment to be mixed that will not discolor or fade at the firing temperature. As such inorganic pigments, for example, titanium oxide, cobalt blue, cadmium red, cadmium yellow, etc. can be used. If they are not mixed, the alumina layer or silica layer 13 formed by firing is translucent, so by coloring the layer, a transparent colored layer can be formed.

After applying the alumina sol or silica sol 3, in order to maintain the smoothness of the applied surface, it is desirable to evaporate water by drying before firing.

After coating and drying, firing is performed. The firing temperature ranges from 450℃ to 1000℃ when alumina sol is applied.
When applying silica sol, do it in the range of 250°C to 1000°C. Baking time is 10 minutes in all cases.
The duration is 300 minutes.

The state of the substrate surface after firing is shown in FIG.
In FIG. 1, the alumina layer or silica layer 13 is formed only in areas other than the areas where the organic substance 2 is printed. This is because the organic substance 2 is burned and volatilized by the firing, so that the alumina sol or silica sol printed on the organic substance 2 cannot remain on the surface of the base material 1. A pattern is formed on the formed alumina layer or silica layer 13 using a heat-transferable coloring material. Here, the heat-transferable coloring material is a coloring material that migrates into the alumina layer or silica layer 13 by heating in the range of 130°C to 230°C, such as disperse dyes, basic dyes, vat dyes, and spirits. Dyes, mordant dyes, oil-soluble dyes,
There are metal-containing dyes, etc. The pattern can be formed using, for example, thermal transfer paper whose pattern layer is made of ink using the heat-transferable coloring material.
When the transfer paper is used, it is heated with the pattern layer 4 of the transfer paper in contact with the entire surface of the heat-resistant base material. (See Figure 3) Since the coloring material migrates only into the alumina layer or silica layer 13 by heating, the surface of the base material is still exposed in the areas where the organic substance 2 is printed first and the layer is not formed. There is. (See Figure 4) As described above, the present invention is a method that can easily form a dense partial pattern with clear boundaries on the surface of a heat-resistant base material. A partial pattern 5 can be formed at a desired location, or a cutout pattern 6 can be formed in that portion by printing letters, designs, etc. in advance with an organic material. (See Figure 5) Therefore, the present invention can be used in various ways for painting metal containers such as cosmetic containers, glass containers, tiles, enamel, ceramics, etc., and has high practical value as it enhances the decorative effect.

[Brief explanation of the drawing]

Figure 1 shows the vicinity of the surface of the base material before firing in the present invention, Figure 2 after firing, Figure 3 when the pattern is formed on the transfer paper after firing, and Figure 4 after the design is formed. FIG. FIG. 5 is a perspective view of a container that is an embodiment of the present invention. In the figure, 1... heat-resistant base material, 2... organic substance, 3
... Alumina sol or silica sol, 13 ... Alumina layer or silica layer, 4 ... Pattern layer of transfer paper, 5
...Design, 6...Cut out pattern.

Claims (1)

[Claims] 1. An organic substance 2 that burns and volatilizes at a temperature below the firing temperature is partially printed on the surface of a heat-resistant base material 1, and then alumina sol or silica sol 3 is applied to the entire surface of the base material and fired to form a material free of the organic substance 2. Forming an activated alumina layer or activated silica layer 13 only in the portion,
By forming a pattern on this and heating it, the ink in the pattern is removed from the activated alumina layer or activated silica layer 1.
3. A method for producing a heat-resistant base material partially having a pattern.