JPS5941869B2 - Method number 13 for painting designs on heat-resistant substrates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for painting designs on heat-resistant substrates such as ceramics, glass, enamel, alumite, stainless steel, etc. More specifically, after a design is once transferred to a pad from a transfer material, Furthermore, it is an object of the present invention to easily attach a pattern to a heat-resistant base material by transferring the pattern onto the surface of the heat-resistant base material from a pad.

Conventionally, as a method of transferring a pattern from a transfer material to a pad and transferring this pattern from the pad to the surface of a heat-resistant base material, there is a method disclosed in Japanese Patent Publication No. 43331/1983. In this method, one thin layer is provided on the upper and lower sides of the pattern layer of the transfer material, and two temperatures are set so that the adhesion strength of the two thin layers is different during transfer. The pattern layer is transferred from the transfer material to the pad and from the pad to the surface of the heat-resistant base material. Therefore, when applying a painting to a heat-resistant substrate using this method, each transfer must be performed in a thermostatic chamber that maintains two temperatures, or the time interval from the first temperature must be adjusted. Therefore, a method must be used in which a second temperature is obtained and transfer is performed at that temperature. All of this is time-consuming and is particularly unsuitable for continuous production. The present invention relates to a method for painting heat-resistant substrates that improves the drawbacks of the above-mentioned conventional methods and that can be easily and continuously produced.

That is, in the present invention, a wax layer 2 is formed on a base sheet 1, and a pattern layer 3 made of heat-sensitive adhesive ink is formed on the wax layer 2.
The transfer material on which the wax layer 2 has been formed is preheated to a temperature at which the wax layer 2 is softened and the heat-sensitive adhesive ink exhibits adhesive properties, and
By bringing the pattern layer 3 of the transfer material into pressure contact with each other,
transferring the heat-sensitive adhesive ink to the pad surface;
Thereafter, the surface of the heat-resistant base material, which has been preheated to a temperature at which the heat-sensitive adhesive ink exhibits adhesive properties, is brought into pressure contact with the pad 4, whereby the surface of the heat-resistant base material is painted. This is the pattern painting method. The present invention will be explained in more detail below.

The transfer material used in the present invention is composed of a base sheet 1, a wax layer 2, and a pattern layer 3. (See Figure 1) The base sheet 1 may be made of any material that does not deform at the temperature at which the wax in the wax layer 2 softens, such as high-quality paper for paper, coated paper, and polyethylene for film. Terephthalate or the like can be used. The wax layer 2 is formed by applying wax onto a base sheet. The waxes used include, for example, modified montan wax, paraffin wax, oxidized wax, ethylene wax, castor wax, millet wax, etc., or mixtures thereof, which soften at 80° C. or higher. The pattern layer 3 is formed using heat-sensitive adhesive ink by methods such as gravure printing, screen printing, and offset printing. The ink used must exhibit adhesive properties at the temperature at which the wax softens. As such adhesives, for example, polyamide adhesives, neoprene adhesives, or copolymerized nylon adhesives exhibiting adhesive properties at 50 DEG C. to 100 DEG C. can be used. At the time of transfer, the transfer material is first preheated to a temperature at which the wax layer 2 softens and the heat-sensitive adhesive ink exhibits adhesive properties.

After preheating, the pattern layer surface and the unpreheated pad 4 are brought into pressure contact. The pattern layer 3 exhibits adhesive properties due to preheating, and the wax layer 2 is softened, so that it is in a state where it is easy to peel off. Therefore, the pattern layer 3 is transferred to the pad surface after pressure contact. (See FIG. 2) Next, the pad 4 to which the pattern layer has been transferred is brought into pressure contact with the surface of the preheated heat-resistant base material.

Preheating at this time is performed at a temperature at which the heat-sensitive adhesive ink exhibits adhesive properties. At this time of pressure welding, the part of the pattern layer 3 in contact with the pad 4 has already solidified because the pad 4 has not been preheated, so the pattern layer 3 is applied to the surface of the pad against the surface of the preheated heat-resistant base material. Shows stronger adhesion than other materials.
Therefore, when the pad 4 is retreated from the surface of the heat-resistant base material, the pattern layer 3 is transferred to the surface of the heat-resistant base material, and the heat-resistant base material 5 is decorated. (See Figure 3) In the above process, some of the wax may adhere to the pattern layer 3 and eventually transfer to the surface of the heat-resistant base material. Since the material 5 is burned and volatilized in the process of calcining it, there is no problem. Since the present invention is a method of painting on a heat-resistant base material as described above, it is sufficient to preheat the transfer material and the surface of the heat-resistant base material at respective preheating temperatures and apply the painting one after another, thereby achieving heat resistance suitable for continuous production. This is a base material painting method.

Examples of the present invention will be described below.

Example 1 A wax layer having the composition shown below was uniformly coated on coated paper.

A pattern layer was formed on the formed wax layer using a polyamide heat-sensitive adhesive ink having the composition shown below.

After preheating the transfer material formed as described above at 100°C, the pad was pressed against the pattern layer, and the heat-sensitive adhesive ink was transferred to the pad surface, and then applied to the ceramic surface that had been preheated at 100°C. As a result of pressing the pads together, it was possible to form a clear pattern on the ceramic.

Example 2 A wax layer having the composition shown below was uniformly coated on a polyethylene terephthalate film.

A pattern layer was formed on the formed wax layer using a copolymerized nylon heat-sensitive adhesive ink having the composition shown below.

The transfer material formed as above was preheated at 110°C,
After preheating the surface of the ceramic at 110° C., the ceramic was painted in the same manner as in Example 1, and as a result, a ceramic with a clear pattern could be obtained.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of the transfer paper used in the present invention;
FIGS. 2 and 3 each show an enlarged sectional view of the transfer process in the present invention. In the figure, 1...Base sheet, 2...Wax layer, 3...Design layer, 4...Pad, 5...Heat resistant sexual base material.

Claims (1)

[Claims] 1 A transfer material in which a wax layer 2 is formed on a base sheet 1 and a pattern layer 3 made of heat-sensitive adhesive ink is formed thereon is softened by the wax layer 2 and the heat-sensitive adhesive ink improves adhesiveness. The heat-sensitive adhesive ink is transferred to the surface of the pad by preheating the pad 4 and the pattern layer 3 of the transfer material to a temperature shown in FIG. A method for painting designs on a heat-resistant base material, characterized in that the surface of the heat-resistant base material is painted by bringing the surface of the heat-resistant base material, which has been preheated, into pressure contact with the pad 4.