Silver printing process brief

The third-generation gold powder printing paste is made of a crystal coating material. The crystal structure of the metal powder is made of a special crystal as the core and is covered with a light-enhancing layer, a titanium film layer and a metallic luster deposit layer. Each layer is arranged in an orderly manner and cannot be confused. . Its light is produced by a titanium film, which accounts for about 25%. The color of gold is caused by the deposition of special compounds in the outer layer. This kind of gold powder printing paste will not be dark when exposed to the air for a long time, and it has good weather resistance and high temperature resistance, and the hand feel of the product is also better than copper zinc alloy powder.

For silver prints, people are pursuing silver sharpness. In addition to the expensive price of sterling silver, the long-term exposure to the shade of the air will gradually dim. There are two types of silver powder used today, one is aluminum powder, and the purity of its aluminum is 99.5%. Like the copper-zinc alloy powder printing, the aluminum powder particles need to be properly ground. The color paste also needs to be protected. Oxidants prevent the loss of “silver light” in the long-term exposure of aluminum powder to the air. The second type is a cloud of titanium silver powder, which is similar to the pearl powder, only changing the crystalline form of the coated titanium dioxide film, that is, the temperature of the titanium film coating is further increased, and the temperature is higher than that of the mica titanium pearl powder coating. Much more, the refractive index after coating can reach 2 to 7, and it can get the same light as silver. If the thickness of the coated titanium film layer is changed, various kinds of silver light colors such as yellow, red, blue, and green can also be derived. This is mainly due to the different thickness of the titanium film layer, and the wavelength of a certain color is selected and absorbed. And reflect a variety of color and light.

The mica-coated silver paste has good compatibility with chemicals, is very stable after printing on the fabric, and has excellent fastness and long-lasting silver rays.