JPS645828B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a method for decorating an alumite product,
This invention relates to a method for decorating an alumite product in which hot stamping foil can be easily transferred with desired decorative designs such as letters, figures, and pictures onto the surface of the alumite product.

[Technical background of the invention and its problems] Conventionally, when decorating the surface of an alumite product with decorative designs such as silver or colored glittering characters, figures, or pictures, the following steps were taken: I am doing it.

That is, first, the entire surface of the product material is subjected to primary alumite processing to give it a silver or colored surface that has glitter, and then it is coated with decorative designs such as letters, figures, and pictures that are desired to have glitter. This pattern is printed on the area by a printing method such as screen printing using alkali-resistant masking ink. After the masking ink is forcibly dried, the entire product is immersed in a caustic soda aqueous solution to dissolve and remove the alumite layer in the alumite layer of the first alumite treatment where the masking ink is not printed. Next, as a secondary alumite process, a matte alumite process is applied, optional dyeing is performed, and then a sealing process is applied, after which the masking ink is washed off by soaking in a cleaning solution, and if necessary, a buffing finish is applied. He completed the process.

Therefore, the alumite process must be performed twice, and there is also a step of melting the alumite layer in the second alumite process, so the time spent on the decoration process is long, and the processing costs are also high. This was a major factor in the high

[Purpose of the Invention] In view of the above-mentioned points, the present invention provides a method for decorating the surface of a product that has been anodized with clear, deep silver, or colored and glittering characters, figures, patterns, etc. It was created with the aim of making it possible to easily and inexpensively transfer and decorate designs.

[Summary of the Invention] In order to achieve the above-mentioned object, the present invention involves cleaning the surface of an alumite product that has been subjected to a sealing treatment, or the surface of this alumite product after further buffing with a cleaning solution. During the cleaning process, decorative designs such as desired letters, figures, and pictures are printed on the surface after cleaning using a printing ink whose main component is a thermosetting resin that has good adhesion to the alumite-treated surface. The printing process involves heating the printed layer to form a printed layer, and then forcingly drying this printed layer to a hardened state where it becomes tacky. Hot stamping foil is then heat-pressed onto the printed layer and hot stamping is performed on the areas that are not bonded. This process consists of a curing process in which only the foil is removed and then the printed layer 3 is completely cured by heating.

[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

That is, the reference numeral 1 shown in the figure is an aluminum product material, and the surface of this aluminum product material 1 is subjected to alumite processing to form an alumite layer 2.

This alumite layer 2 is made by applying a satin finish treatment to the surface of the aluminum product material 1 using a satin treatment solvent such as hydrogen fluoride, followed by an alumite treatment using a normal sulfuric acid method, and immediately immersing this in an aqueous gold dye solution for several minutes. After that, it is sealed, buffed, and then degreased with a cleaning solution such as trichlorethylene to give it a golden satin finish.

Next, the surface of the alumite layer 2 after cleaning is coated with a material that has good adhesion to the polished surface of the alumite.
A printing process is performed by printing letters, figures, or pictures as appropriate by screen printing using thermosetting resin ink such as epoxy resin ink or acrylic resin ink to form a printing layer 3.

Furthermore, this printed layer 3 is forcedly dried at 100° C. for 15 minutes to harden it to the extent that it becomes sticky.
A golden hot stamping foil 4 is heat-pressed onto the foil using a hot stamping machine (not shown), and since the hot stamping foil 4 in the areas not bonded by the printing layer 3 does not adhere to the alumite layer 2, The hot stamping foil 4 is peeled off and removed, and then forcedly dried in a heating oven (not shown) at 150°C for 20 minutes to completely cure the printing layer 3, completing the curing process and performing decoration. be.

As a result, a thick golden design is decorated on an alumite product with a deep golden satin finish, creating a profound and elegant decorative surface that is superior to the conventional double-anodized finish. It has become much better than decorative surfaces.

In addition, as another example, the surface of the aluminum product material 1 is subjected to rough satin treatment, bead satin treatment, or sandblasting at high temperature using a satin treatment solvent such as highly concentrated hydrogen fluoride, and then subjected to normal treatment. Alumite treatment is performed using the sulfuric acid method to form a black satin-like alumite layer 5, and after sealing treatment is performed on this alumite layer 5, a cleaning process and a printing process are performed in the same manner as described above, and hot stamping is performed. The hot stamping foil 4 is bonded under heat and pressure, and the portions of the hot stamping foil 4 that are not bonded are removed to completely cure the printed layer 3, completing the curing process and then decorating.

According to this example, a thick gold pattern is decorated on a rough black satin-like surface, and in addition to the conventional double alumite decorated surface, etching is applied to the surface of an alumite product. Even compared to those with gold-colored designs embedded in the back, a very excellent decorative surface with a profound and tasteful appearance was obtained.

Incidentally, the thermosetting resin ink is not limited to epoxy resin ink or acrylic resin ink, and may have good adhesion to the surfaces of the alumite-treated layers such as the alumite layer 2 and the alumite layer 5. It goes without saying that any thermosetting resin ink is fine.

[Effects of the Invention] Since the present invention is configured as described above, decorative designs such as letters, figures, pictures, etc., which are clear and deep silver or colored and have glitter, can be applied to the surface of the product which has been anodized. can be easily and inexpensively transferred and decorated.

In other words, the cleaning process of cleaning the surface of the alumite product that has undergone pore sealing treatment or the surface of the alumite product after further buffing with a cleaning solution leaves the surface of the alumite product in a state where it is easy to decorate. It is to be kept in a safe place.

Then, on the surface after cleaning, a printing layer 3 is applied, in which decorative designs such as desired characters, figures, and pictures are printed using a printing ink mainly composed of a thermosetting resin that has good adhesion to the alumite-treated surface. The printing process of forming the printed layer 3 is heated and forcedly dried to a hardened state to the extent that it becomes sticky, and then the hot stamping foil 4 is bonded by heat and pressure on top of the printed layer 3 to remove the hot stamping foil 4 from the part that is not bonded. The hardening process of removing the hot stamping foil 4 and then heating and completely curing the printed layer 3 means that only the printed layer 3 is heated and completely cured.
is adhered to the surface. That is, since the hot stamping foil 4 does not adhere to the alumite-treated surface, only the decorative pattern portion formed by the printing layer 3 is adhered. Then, only the portions of the hot stamping foil 4 that are not bonded by the printing layer 3 are removed, and then the printing layer 3 is heated and completely cured, so that the hot stamping foil 4 remains only in the shape of the decorative pattern. When the printed layer 3 is completely cured by heating, the remaining hot stamping foil 4 adhered to the decorative pattern is fixed to the surface of the alumite product.
Since the printing layer 3 has a slight thickness, the hot stamping foil 4 appears to be slightly raised, and in contrast to the deep surface of the alumite treatment, the decoration is very clear and heavy. I can do it.

As explained above, according to the present invention, the surface of a product that has been anodized can have a clear and deep silver color or a colored and glittering property without the need for the conventional double alumite treatment. Easily create decorative designs such as letters, figures, and pictures, and
In addition to being able to be transcribed at low cost, the decorative surface obtained by the transcribing has a profound effect that is not found in conventional products, and has excellent effects such as stimulating the consumer's desire to purchase. .

[Brief explanation of drawings]

FIG. 1 is an enlarged sectional view of the main part of an alumite product obtained by the method of this invention, and FIG. 2 is an enlarged sectional view of the main part of an alumite product obtained by another example of the method of this invention. . 1...Aluminum product material, 2...Alumite layer,
3... Printing layer, 4... Hot stamping foil, 5
...Alumite layer.

Claims (1)

[Claims] 1. A cleaning process in which the surface of an alumite product that has been subjected to sealing treatment or the surface after further buffing of this alumite product is cleaned with a cleaning solution, and the surface after cleaning is washed with a cleaning solution. A printing process in which decorative designs such as desired letters, figures, and pictures are printed using printing ink mainly composed of a thermosetting resin with good adhesion to form a printed layer, and a printing process in which this printed layer is heated. A hardening process in which the printed layer 3 is forcibly dried to a hardened state to the extent that it becomes sticky, hot stamping foil is heat-pressed on top of the hot stamping foil, only the portions of the hot stamping foil that are not bonded are removed, and the printed layer 3 is then completely cured by heating. A method for decorating an alumite product characterized by the steps of: