Explain the proportion of copper powder added to the ink

Gold powder ink. The proportion of gold powder added to the ink

Abstract: The proportion of copper powder ink is generally 10%-15% ratio, the ratio of resin is 55%, and the ratio of diluent is 30%. [Reference ratio] The proportion of copper powder in ink, ink printed print is very popular with consumers, but there are a series of problems in the production, storage and use of these inks. But in order to get a real example of the chrome effect, the printer must test it to determine how much pigment is needed.

1, the proportion of copper powder ink is generally 10%-15% ratio, the proportion of resin is 55%, the proportion of diluent is 30%. [Reference ratio] Another reason why color consistency is difficult to guarantee is the arrangement of pigments, especially the layered gold powder ink. The metal foil floats on the surface of the ink film, forming a lot of sputum idle (the larger the size of the color particles, the idle The larger the copper-gold powder ink is, the choice of the printing material is very important, because there are many pores on the surface, and the substrate with permeation and exudation absorbs the transparent resin liquid, especially when the viscosity of the ink is low, the resin When absorbed, the pigment particles will remain on the surface of the substrate. The resin composition will cause the silver powder to appear gray and the gold powder to appear brown. For screen printing, the pigment particle size is usually between 3 and 15 μm. After the metal pigment particles are mixed with the binder, the shelf life of the ink is also different, usually between several hours and several months. Screen printing ink manufacturers are still working hard to refine the gold ink to make them more convenient to use. , produces a shocking effect. The ink binder acts as a binder for the pigment and acts to protect the ink film after drying. Copper for gold ink There is a certain proportion of zinc powder. According to the ratio, the golden red or fluorescent color can also be made of aluminum powder and transparent yellow ink. The gloss is not as good as the gold ink made of copper powder, but the gloss is longer. It is also good at chemical resistance and toxicity. It can be alleviated by using achromatic colors such as white or bright gray as the base color. Fine metal pigment particles are more leisurely during transfer, unlike those that are too large. The particles need to pass through the mesh screen of the mesh, but the fine pigment particles sacrifice the gloss. This is why it is generally not recommended to use traditional printing spectrophotometers to measure copper powder prints. In most cases, metal powder It is sold as a part of screen printing ink and is added to the binder during use.