JPS5949312B2 - How to pattern enamel products - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for patterning enamel products.

Conventionally, as a method for attaching patterns to enamel products, methods such as 1 Japanese Patent Publication No. 1983-41699 and 2 Japanese Patent Application Laid-open No. 54-71 have been used.
There are a method disclosed in Japanese Patent Publication No. 109 and a method disclosed in Japanese Patent Application Laid-open No. 3-80413. First, to explain method 1 above, a lower axis layer is formed with a thickness of 0.05 to 0.20% by a wet method, and two or more upper axis layers are formed on top of it using a wet method. The total thickness is 1.0 by using the upper shaft which has a small viscosity and surface tension at the firing temperature as the adjacent lower shaft.
By forming it by a dry method in the range of ~1.5'Xi, a pattern resembling the crystalline pattern of marble is produced by utilizing the reboiling phenomenon. In addition, in method 2 above, enamel powder of a different color from the lower glaze layer is sprinkled in spots on the surface of the lower shaft layer formed by a dry method through a screen, and the different colored enamel is heated with the residual heat of firing the lower glaze layer. It is fused to the surface of the layer to form a marimo spot pattern with a three-dimensional effect.The above method □ involves masking the surface of the bottom layer formed by a wet method with a sheet with a pattern punched out. The lower shaft layer is a layer in which a pattern punched into a masking sheet is formed on the surface of the lower shaft layer by applying a different colored enamel glaze.

In contrast, the present invention uses a flat (uniform) glaze application method for the lower and upper shaft first layers using a wet method, and a staple-like glaze application method using a wet method for the upper shaft second layer. By using different glazing methods and using the reboiling phenomenon, we can create enamel products with patterns similar to the marble crystal patterns obtained by the above conventional method, marimo speckled patterns with a three-dimensional effect, or asking sheets. The purpose of this invention is to provide a new method that can continuously display a so-called kiln-modulated non-uniform pattern, which is different from the punching patterns and two-tone colors.

According to the present invention, such an object is to provide a lower glaze layer and an upper glaze layer in sequence on a metal substrate, and when producing an enamel product by firing each layer, two upper glaze layers are formed. Laminated structure with 0.05-0.15% flat glaze on the lower glaze layer,
The first layer of upper glaze provided adjacent to this lower glaze layer is 0.15
A second layer of upper glaze provided on the surface of the first layer of upper glaze is formed by a wet method using a staple-shaped glaze of 0.03X or more, and a second layer of upper glaze is applied to the first layer of upper glaze. This is achieved by a method for patterning an enamel product, which is characterized by using a top glaze whose surface tension, viscosity, and specific gravity are all smaller at the firing temperature than the top glaze of the second layer. Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a front view of a enamel product patterned according to the present invention, and FIG. 2 is an enlarged sectional view of the main parts.

Enamel products include bathtubs, washbasins, sinks, and other bathroom products, kitchen-related products, and other products in all fields, but here they are shown as panel-shaped products, and as shown in Figure 2, they are metal products made of steel plates, etc. A lower glaze layer 2 is provided on the base 1, and an upper glaze layer 3 consisting of a first upper glaze layer 3a and a second upper glaze layer 3b is provided on the lower glaze layer 2, and the surface of the second upper glaze layer 3b is A reboiling pattern 4 is formed by boiling of the upper glaze of the first upper glaze layer 3a.

The basic composition of the glaze forming the lower glaze and upper glaze can be selected within the range conventionally used in the production of enamel products, but the glaze of the upper glaze first layer 3a has a specific gravity and viscosity at the firing temperature. , the surface tension is lower than those of the glaze of the clay glaze second layer 3b.

Hereinafter, the method of patterning kiln modulation of the enamel product of the present invention will be explained in detail.

First, a lower glaze is applied in a flat shape by a wet method onto the treated surface of a metal substrate 1 made of, for example, a steel plate, which has undergone conventional pretreatments such as alkaline degreasing, pickling, nickel treatment, neutralization, and drying, and is then dried. , baked at 800-900℃ for 3-15 minutes.
．． A lower glaze layer 2 of 0.05 to 0.15 is formed.

Next, an upper glaze is applied to the surface of the lower glaze layer 2 in a flat shape using a wet method similar to the application of the lower glaze, and dried to a temperature of 800 to 900 ml.
The first layer 3a of upper glaze having a content of 0.15% or more is formed by firing at 0° C. for 3 to 15 minutes.

Next, on the first upper glaze layer 3a, an upper glaze made of a glaze having a higher specific gravity, viscosity, and surface tension than the glaze of the first upper glaze layer 3a is applied in a stable state by a wet method, and after drying. Baking is performed at 800 to 900°C for 3 to 15 minutes to form the second upper glaze layer 3b with a thickness of 0.03S or more.

The basic composition of the glaze forming the lower glaze and upper glaze can be selected within the range conventionally used in the production of enamel products.

When the second upper glaze layer 3b is fired, a reboiling phenomenon occurs in the first upper glaze layer 3a, and after cooling, a kiln-modulated reboiling pattern as shown in FIG. 2 appears.

The table below shows how patterns are formed depending on the relationship between the thickness of the first upper glaze layer 3a and the degree of staples of the second upper glaze layer 3b.

Note that the thickness of the first upper glaze layer 3a is less than 0.15%, for example, 0.15%.
If the temperature is between 0.04 and 0.05, kiln deformation patterns will not occur regardless of the size of the states pull.

In addition, when applying the staple pull glaze for the second upper glaze layer 3b, heat the base material before the staple pull glaze for 5 to 15 molecules at 50 to 150°C, and when applying the glaze with a reshin gun, etc., the specific gravity of the slip should be 1.7 to 2.0. By taking measures such as increasing the height as much as possible within the range of , staples can be produced more effectively.

Further, although the kiln pattern is produced under firing conditions of 800 to 900° C. and 3 to 15 minutes, a more effective pattern can be obtained by firing at as high a temperature as possible for a long time within this range.

As described above, according to the present invention, the first upper glaze layer 3a is applied with a flat glaze using a wet method, and the second upper glaze layer 3b is applied with a staple glaze using a wet method to form a reboiled pattern. It is possible to obtain a so-called kiln modulation pattern on the product.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Using the lower glaze and upper glaze of the above composition, an enamel was formed into a bathtub body which was press-formed from a decarburized steel plate for enamel.

First, a lower glaze of the above composition was applied in a flat shape using a Meiji spray gun F75-Gl2 on the surface of a steel plate 1 which had been pretreated in the order of alkaline degreasing, pickling, nickel treatment, neutralization, and drying. After drying for 10 minutes, it was fired at 840° C. for 5 minutes to provide a lower glaze layer 2 with a thickness of 0.10%.

Next, apply the upper glaze on top of this lower glaze layer 2 using the same method as applying the lower glaze. The upper glaze for the first layer of the above composition was applied in a flat shape, dried at 110°C for 10 minutes, and then fired at 840°C for 5 minutes to obtain a thickness of 0.
．． After providing the upper glaze first layer 3a from 20 to 20, the upper glaze first layer 3a
On top, apply the upper glaze for the second layer of the above composition using Meiji Rishingan AG.
-2 to a stable shape, dried at 110℃ for 10 minutes, and then fired at 840℃ for 10 minutes to a thickness of 0.1
01! X. A second upper glaze layer 3b was formed.

As a result, a reboiling phenomenon occurred in the first upper glaze layer 3a, and an uneven pattern of so-called kiln modulation appeared continuously over the entire surface.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a enamel product patterned according to the present invention, and FIG. 2 is an enlarged sectional view of the main parts. 1...Metal base, 2...Lower glaze layer, 3.
...Top glaze layer (3a...Top glaze first layer, 3b
......second layer of upper glaze).

Claims (1)

[Claims] 1. A lower glaze layer and an upper glaze layer are sequentially provided on a metal substrate,
When manufacturing enamel products by firing each layer, the upper glaze layer has a two-layer laminated structure, and the lower glaze layer has a 0.05 to 0.1
Glaze is applied in a flat shape of 5 m/m, the first layer of upper glaze provided adjacent to this lower glaze layer is applied in a flat shape of 0.15 m/m or more, and the upper glaze is provided on the surface of the first layer of upper glaze. Glaze 2nd
The layers are glazed in the form of staples of 0.03 m/m or more, and each layer is formed by a wet method. Both methods use kiln modulation patterns for enamel products, which are characterized by the use of small overglazes.