JPS5851876Y2 - Copper products for eating and cooking utensils - Google Patents

Description

[Detailed explanation of the idea] This invention relates to copper products for eating and drinking and cooking utensils.

Conventionally, this type of product has been manufactured with tin plating or coating on the surface of copper, in view of the fact that when left in humid air for a long period of time, copper forms basic carbonates, which coat the surface with a toxic green patina. Nickel plating was applied to create a thin layer of soot and nickel metal on the copper surface to prevent patina from forming.

However, such plating work is time consuming, requires careful preparation of the copper surface, and is complicated, resulting in extremely low production efficiency and high costs.

However, since the metal layer formed by plating is very thin, it easily peels off, and therefore cannot withstand long-term use and is dangerous.

The purpose of this invention is to provide copper products for eating and cooking utensils that can eliminate the above-mentioned drawbacks.

Next, this invention will be explained in detail with reference to some embodiments of the drawings.

As shown in FIG. 3, a silicone resin layer 3 is formed on the inner surface of the copper product 1. The cup 5 with legs 4 in FIG. 1A and the tip 7 with 6 hands in FIG. 1B Alternatively, if methyl chloride is applied to the inner surface of each pot 8 in FIG. It is produced by catalyzing the primary resin obtained by decomposition with metal salts and amines at temperatures above 100°C, and has unique surface properties such as mold release, foam elimination, water repellency, etc., and electrical insulation properties. A silicone resin liquid that is highly durable, non-toxic, chemical resistant, and has high mechanical strength is applied by spraying, heated in a furnace at 120°C to 300°C, and baked and fixed to form a silicone resin layer. 3.

In this case, by heating the copper product coated with silicone resin liquid in a furnace, an oxide film layer 9 as shown in Fig. 3 is formed on the inner surface of the copper product 1, so that the red luster remains for a long time without discoloration. It will be maintained for a long time and will be less likely to get scratched.

In addition, by roughening the inner surface of the copper product 1, that is, the surface on which the silicone resin layer 3 is formed, the resin layer 3 can be baked and fixed even more firmly, and a large number of small spherical metal particles are fired at high speed as shown in Fig. 2A. It is preferable to apply shot peening treatment, or to apply multiple circular or spiral scratches as shown in FIG. 2B.

Since this invention is constructed as described above, it exhibits the following effects.

■ The silicone resin liquid is sprayed onto the inner surface of the copper product 1 and heated in a furnace to bake and harden it to form the silicone resin layer 3, which requires a long time like plating. Since unnecessary but complicated polishing work is eliminated, mass production becomes possible, improving productivity by 50 times compared to conventional methods.

Also, unlike a very thin metal layer like plating,
Since the silicone resin layer 3 can be formed to a desired thickness, it hides scratches during press molding of copper products, eliminating the need for careful final polishing work, which lasts for a long time. It can be used as a safe copper product.

2. Silicone resin, which has excellent water repellency, non-toxicity, chemical resistance, and heat resistance, is baked and fixed onto a high-grade copper product with a unique reddish luster, making it an extremely safe copper product.

3 As shown in Fig. 3, a silicone resin layer 3 is formed on the inner surface of the copper product 1, and an oxide film layer 9 is formed on the outer surface, making it an excellent copper product that can exhibit shine and patina prevention effects over a long period of time. Become.

4. A more effective copper product can be obtained by subjecting the surface on which the silicone resin layer 3 is to be subjected to shot peening treatment or the like.

5 Regarding this invention, as previously published, the Utility Model Publication of 1973 describes the structure of pots and pots whose inner surfaces are coated with a silicone synthetic resin film and baked.
-4475 publication, the pot of Utility Model Publication No. 30-4476,
Kama is known.

Since such conventional techniques involve directly baking silicone onto the surface of the pot or pot, there is a slight problem in the adhesion of the silicone synthetic resin film.

In the present invention, the adhesion force of the silicone resin film, which addresses the above-mentioned problem, is increased.

That is, in the present invention, the silicone resin layer 3 is formed by shot peening, forming multiple circular or spiral scratches, and forming a dog-shaped contact surface by the scratched surface, thereby fixing the silicone resin layer 3 by baking.

Therefore, it is possible to provide copper products with improved adhesion and long service life.

Furthermore, in the present invention, the oxide film layer 9 is simultaneously formed on the outer surface by heating in a furnace for forming the silicone resin layer 3, so the silicone resin layer 3 is formed on the inner surface 2. An oxide film layer 9 is simultaneously formed on the outer surface.

Therefore, the present invention not only prevents the occurrence of patina, which was a drawback of the conventional method, but also forms an oxide film layer 9 at the same time, making it possible to provide an astringent additional color on the outer surface, which is different from the color tone. .

[Brief explanation of drawings]

The drawings are examples of this invention, and are shown in Figures 1A and 1B. C is a perspective view, FIGS. 2A and B are a front view, and FIG. 3 is a sectional view. 1... Copper product, 3... Silicone resin layer.

Claims (1)

[Scope of utility model registration request] Shot peening or multiple circular or spiral scratches are formed on the inner surface of the copper product, and a silicone resin layer obtained by using a copper catalyst on metallic silicon is baked and adhered to the scratched surface, and the outer surface is oxidized. A copper product for eating, drinking and cooking utensils, characterized in that a coating layer is formed during the baking process.