JPS6045073B2 - Primer for transfer on glaze and method for painting ceramics, etc. using the primer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an on-axis transfer primer used when painting ceramics or the like.

When painting ceramics, conventionally, the ceramic base is glazed and aged at about 1000 to 1400 degrees Celsius, and then the pattern layer formed on transfer paper is transferred onto it, and then the ceramic base is aged at about 500 to 1400 degrees Celsius.
Previously, the synthetic resin contained in the pattern layer was decomposed by firing at about 100°C. However, in this method, heating had to be carried out in two stages: when the glaze was ripened and when the pattern layer was fired, which made the process complicated and at the same time had poor thermal efficiency. A method has also been proposed in which the glaze is painted on the so-called main shaft before it is aged, and the aging of the main shaft and the firing of the pattern layer are carried out simultaneously, but since the binding force between the glaze particles is weak in the main shaft, the pattern layer and the main glaze are The adhesion between the layers becomes weaker.
Therefore, in order to improve the binding properties between the glaze particles, in this method, a synthetic resin binder is mixed into the main glaze, and then a primer is applied to the surface of the main axis layer. The binder and primer used in the above method are provided in the form of a synthetic resin emulsion. However, in order to improve the binding agent between the main grains, it is necessary to add several percent or more of a binder to the glaze, and the surface of the main shaft layer to which such a binder has been added must be further coated with a primer. However, the adhesion between the main glaze layer and the pattern layer is insufficient, and painting defects such as wrinkles, potholes, and pinholes are likely to occur in the pattern, making it impractical in terms of performance and economy. It was scarce. It is an object of the present invention to improve the above-mentioned drawbacks of the present invention, to firmly adhere the pattern layer to the main shaft, and to simultaneously perform the aging of the glaze and the firing of the pattern layer. The basic idea is to apply a primer for on-axis transfer, which is a synthetic resin emulsion mixed with a water-soluble polymer.

The present invention will be explained in detail below. Examples of the synthetic resin emulsions used in the present invention include styrene-butadiene rubber latex, acrylonitrile, -butadiene rubber latex, butadiene rubber latex, isoprene rubber latex, chloroprene rubber latex, polyethylene emulsion, ethylene-vinyl acetate copolymer emulsion, and polyvinyl acetate. This includes all synthetic resin emulsions such as emulsions based on synthetic resins and polyacrylic emulsions.

The above examples are not intended to limit the invention. The water-soluble polymers used in the present invention include, for example, sodium alginate, carboxymethyl cellulose, methoxy cellulose, hydroxyethyl cellulose, polystyrene sulfonic acid and its salts, polyisobutylene maleic acid salts,
Polyvinyl methyl ether, polyacrylic acid and its salts, polymethacrylic acid and its salts, polyacrylamide, polyvinylpyrrolidone, polyethyleneimine,
Partially saponified polyacrylic ester, polyvinyl alcohol, gum tragacanth, neutralized rosin, starch, modified starch,
It includes all water-soluble polymers such as iron and bulletin.

The above examples are not intended to limit the invention. The water-soluble polymer is usually added in an amount of 50 to 400 parts per 10 parts (hereinafter simply referred to as "parts") of the above synthetic resin emulsion, but it is of course possible to easily achieve the purpose of the present invention with additions outside this range. The viscosity of the above primer is 50 to improve penetration into the glaze layer.
~3000CpS is desirable. In this way, a primer for on-glaze transfer is prepared. To paint using the above primer, proceed as follows.

First, glaze is applied to the ceramic base.

The glaze referred to in the present invention includes all glazes such as lead yew, fritted yew, bristol yew, and ceramic yew. As for the application method, general methods such as dipping, pouring, spraying, and sieving are applied. After glazing and preliminary drying, the primer described above is applied to the surface of the raw glaze layer.

The coating method is a general method such as brushing, spraying, dipping, etc., and the coating amount 4 is usually about 1 to 30 g, preferably about 1 to 10 g, as solid content of the primer. At a coating amount of Since the volatilization of decomposed gas is not inhibited and the amount of volatilized gas is small, pinholes are less likely to occur in the pattern. After applying the above primer to the surface of the raw glaze layer, preliminary drying is performed. Pre-drying is usually carried out at 150 to 2000 C for 1 hour. The transfer paper used in the present invention has a water-soluble polymer coated on the surface of the paper, a pattern is printed on it using ink made of a synthetic resin mixed with a pigment to form a pattern layer, and then a synthetic resin is applied on top of the pattern layer. When the above-mentioned transfer paper is immersed in water, the water-soluble polymer dissolves and the pattern layer is peeled off from the paper together with the reinforcing layer. Transfer on top.

This method is generally called the slide method, and at this time, the pattern layer is transferred onto the surface of the raw glaze layer while still having a large amount of moisture attached, but the structure of the raw glaze layer is strengthened by the primer mentioned above, and the pattern layer is mainly made of synthetic resin emulsion. Since it has water resistance due to its ingredients, the raw glaze layer is reliably prevented from collapsing. Moreover, since the raw glaze layer has appropriate hydrophilicity and initial adhesiveness mainly due to the water-soluble polymer component, the adhesion of the pattern layer to the raw glaze layer is extremely good. 1100 after transferring the pattern layer onto the raw glaze layer
Calcinate at a temperature of ~1400°C.

The raw glaze is aged by the above firing, and at the same time, the synthetic resin of the primer, the water-soluble polymer, and the synthetic resin of the pattern layer and reinforcing layer are decomposed and volatilized, and painting is performed. Since the present invention has the above configuration, the structural strength and water resistance of the raw glaze layer are improved by the primer treatment, and a pattern can be directly transferred to the raw glaze layer by a water slide method.

Therefore, the heating of the glaze and the firing of the pattern can be carried out at the same time in one firing, improving thermal efficiency and streamlining the process. Example 1 Synthetic resin emulsion A was obtained by heating and stirring the following recipe at 75°C for 3 hours.

Vinyl acetate 31 parts by weight n-butyl acrylate 4 Ethyl acrylate 5 Polyoxyethylene nonylphenyl ether 2 Sodium dialkyl sulfosuccinate
Ammonium 2persulfate 0.1
Water 56 Add 10 parts of water and 10 parts of 2% methyl cellulose aqueous solution to the weight part of the above emulsion AW, and the viscosity is 10 PS/2.
Primer A for transfer on glaze at 0°C is obtained.

Comparative Example 1 170 parts by weight of water was added to 4 parts of emulsion A to obtain primer B for transfer on glaze having a viscosity of 207 pS/20°C.

Example 2 Synthetic resin emulsion C was obtained by heating and stirring the following recipe at 80°C for 3 hours.

Methyl methacrylate 1 part n-butyl methacrylate 10 n-butyl acrylate 13 polyoxyethylene lauryl ether 5 potassium persulfate
0.

1 Water 55 Add 10 parts of water to the above emulsion C1 part, and further add 20 parts of a 2% carboxymethylcellulose aqueous solution to obtain primer C for transfer on glaze having a viscosity of 700 CpS/20°C.

Comparative Example 2 Primer D for transfer on glaze is obtained by adding 8 parts by weight of water to 2 parts by weight of Emulsion C.

Example 3 Add 10 parts of water to 1 part of Polylac 718 (styrene-butadiene rubber latex manufactured by Mitsui Toatsu Co., Ltd.),
Furthermore, 10 parts of 3% polyacrylamide was added to reduce the viscosity to 2.
00I) PS/20°C primer E for on-glaze transcription is obtained.

Approximately 600 f1d of dry lead on unglazed ceramics
Primers A, B, C, D, and E prepared in the above examples were sprayed on the surface of the raw glaze layer after pre-drying at a ratio of about 7f177! It was painted with a brush at a ratio of .

The following table shows the state of the pattern when the pattern layer printed on transfer paper was transferred to each of these samples by the water slide method and fired at a temperature of 1200 to 1300°C. As shown in the table, primers B and D, which do not contain water-soluble polymers, have a weak reinforcing effect on the raw glaze and poor adhesion to the pattern layer, resulting in painting defects such as crumbling of the glaze, pinholes, and curling of the 7 patterns. will occur.

Claims (1)

[Scope of Claims] 1. A primer for transfer on glaze, characterized in that a water-soluble polymer is mixed into a synthetic resin emulsion. 2. Glaze the base of ceramics, etc., then apply a primer for glaze transfer, which is a mixture of synthetic resin emulsion and water-soluble polymer, to the surface of the raw glaze layer, then transfer the transfer design using the water slide method, and then fire in the oven. A painting method characterized by performing heating of the glaze and firing of the pattern at the same time.