JPS5842839B2 - Surface printing processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surface printing treatment method related to surface treatment technology for synthetic resin products or metal products.

Conventionally, there are various methods of printing patterns on the surface of synthetic resin products or metal products, but the printing equipment is generally expensive, so in the case of a special number of products, the printing cost is high. Therefore, the printing technology itself has to be degraded, and there is a need for a method of producing high-quality printing at low cost. It was requested.

The present invention was devised in view of the above-mentioned needs, and can be used with conventional silk printing machines, offset printing machines, etc.
We would like to propose a printing treatment method for the surface of synthetic resin products or metal products that can obtain even more delicate and clear printing using these printing machines, and that also allows the printed patterns to have depth. This is the purpose.

That is, the present invention uses a conventional printing machine to print a sublimable disperse dye as an ink on the surface of a printing material, and then the upper layer of the printing form is coated with a paint that is compatible with the sublimable disperse dye. The coating is coated to form a coating, and this is baked under conditions of the dispersion temperature of the sublimable disperse dye to form a pattern printed on the surface of the coating.

Now, the method of printing on the surface of a synthetic resin product or metal product of the present invention will be explained with reference to the drawings. The drawings are sectional views of essential parts in each step.

Synthetic resin products made of thermoplastic resins, thermosetting resins, synthetic rubbers, metal composite resins, etc., or metal products 1 made of single element metals, composite element metals, electroplated metals, etc. are printed using the silk printing method or offset printing. A desired pattern is printed on the surface by a conventional method such as a printing method, and the ink 2 that is the impression is a combination of a sublimable disperse dye, a conventional silk, a colored dye for offset printing, and a sublimable disperse dye of the present invention. Compatible mixed dyes are used.

In this case, if necessary, heat the metal product 1,
It is also possible to make it easier to apply the sublimable disperse dye.

Thereafter, a coating film 3 is formed on the surface of the printed synthetic resin product or metal product 1 and the sublimable disperse dye ink 2 using a paint that is compatible with the sublimable disperse dye ink 2.

That is, the paint is selected so that it does not dissolve the sublimable disperse dye and has a harmonious color.

After the coating film 3 dries in this state, the metal product 1 is placed in a baking oven, and the baking operation is performed under the dispersion temperature conditions of the sublimable disperse dye, so that the ink 2 of the sublimable disperse dye permeates into the coating film 3. , the pattern of the single ink 2 is visible from the surface of the coating film 3. On the other hand, in the case of a mixed dye of a non-sublimable coloring dye and a sublimable disperse dye, depending on the blending ratio of the two, A double pattern is formed by coloring the surface of the product 1 and penetrating and dispersing it into the coating film 3.

Therefore, depending on the printing operation, the sublimable disperse dye ink 2 is dispersed so as to have a width in the direction of the layer thickness of the coating film 3, and the pattern appears to have depth.

Therefore, depending on whether the coating film 3 is transparent, translucent, or opaque, or whether it is colored or colorless, even if the pattern printed with the sublimable disperse dye ink 2 is the same, it will take on various appearances.

Further, by performing the above-mentioned baking operation, the printed ink 2 and coating film 3 are more reliably applied to the surface of the synthetic resin product or the metal product 1.

Incidentally, in the above description, the product 1 is a synthetic resin or metal product, but it goes without saying that glass products, wood products, and ceramic products are also included.

As mentioned above, the surface printing treatment method of the present invention involves first applying a sublimable disperse dye as an ink to the surface of a printable material, applying a pattern, etc., and then layering a resin coating that matches the printing dye thereon. Since the printing process allows the sublimable disperse dye to penetrate into the coating film, the ink itself is never exposed on the surface of the finished product, which prevents wear and tear due to friction etc. on the surface of the product. Not only is it extremely durable, but when the ink is a mixture of non-sublimable and sublimable dyes, a uniquely thick pattern is formed on the surface of the product, which is different from conventional methods. Furthermore, since the printing processing method of the present invention uses an ordinary printing machine as described above to print on the surface of a synthetic resin product or a metal product 1, etc., the ink 2 It can be easily manipulated by converting it into a sublimable disperse dye, and the coating film 3 can be applied by simple methods such as brush coating or dipping, so it is extremely useful for small-scale surface treatment.

Further, according to the printing processing method of the present invention, since the pattern of the ink 2 constituting the seal impression extends in the layer thickness direction of the coating film 3, for example, even if the coating film 3 is worn out, the coating film 3 is completely removed. It remains a complete printed image until it is gone.

As explained above, the method of printing on the surface of synthetic resin products or metal products of the present invention can be carried out using ordinary printing machines, can be produced at low cost, and can produce printed images with clarity and depth. In addition to not being easily erased, it also has great advantages, such as being able to print with a simple operation that is different from conventional print processing techniques.

Further, according to the printing method of the present invention, since the pattern of the ink 2 forming the seal impression extends in the layer thickness direction of the coating film 3, for example, even if the coating film 3 is worn out, the coating film 3 is completely removed. Until then, the complete printed image remains.

As explained above, the method of printing on the surface of synthetic resin products or metal products of the present invention can be performed using a normal printing machine.
It can be produced at a low cost, the printed pattern is clear and deep, and it does not disappear easily, and it has the characteristics of being able to print with a different style from conventional printing with simple operations. The practical effects after implementing the present invention are very good.

[Brief explanation of the drawing]

The drawings are principle diagrams showing the method of printing on the surface of synthetic resin products or metal products according to the present invention. Fig. 1 shows a state in which printing is performed on the product surface, and Fig. 2 shows a state in which a coating film is provided on the upper layer of the printed surface. FIG. 3 is a schematic cross-sectional view showing the state in which the printing operation has been performed. 1...Synthetic resin product or metal product, 2...Sublimable disperse dye ink, 3...Coating film.

Claims (1)

[Claims] 1 After printing a pattern, etc. on the surface of a printable material using a sublimable disperse dye as ink, and forming a resin coating on the outer layer that matches the printing dye, baking is carried out under temperature conditions that allow the dye to sublimate and disperse. A surface printing treatment method characterized by penetrating a dye into a coating film so that a pattern or the like appears from the surface.