New metal ink is the use of a large sheet of metal particles reflecting light and the metal ink luster. Over the years, metallic inks are used in screen printing to produce metallic gold or silver sheen. Screen printing screen printing speed is slow and due to rising costs, and the metal ink in printing due to the improper use, prone to ink drying non-performing, heap and matte defects.

New metal ink is usually UV UV and water-based inks, the ink for metal in the use of sheet-fed offset printing machine or flexo printing machine, can not only avoid the shortcomings, but also can according to need, to deploy a variety of colors. Metal ink on sheet metal particles reflecting light and the metal ink has a shiny, metallic flake particles is large, the reflection of light, can be better enhanced ink metal effect. Too fine metal particles, is easy to cause the diffusion of light, so that the ink loss of metallic luster; two is easily oxidized, let alone have metallic luster.

In screen printing, because screen and screen printing process constraints, so that the metal ink sheet metal particles may be too large. As everyone knows, in screen printing, screen mesh size determines the printing precision, but also determines the mesh size. The higher the number of mesh, mesh size is smaller. While the high precision printing needs high mesh screen, such as mesh is too low, the mesh is too large, the printing marginal will appear jagged, influence the precision of graphic. But the mesh size is too small, will break through ink larger particles, serious when can cause printing color density. Moreover, even in the absence of this happens, because of too much screen particles, also can make scraping knife of the ink particle aggregation too much to cleaning, it will cause paralysis, which is what the loss outweighs the gain. Practice shows that the mesh size, should be metal micro average size about 3 times, more suitable. The metal ink sheet metal particles in the blade under the action of a smoothly through the screen. General metal ink particles with an average size of 5~12 μm, in accordance with the mesh size should be metal micro average size is about 3 times as the principle, the screen mesh of at most 275L/cm ( the mesh size of 33 μ m ), apparently with 275L/cm mesh printing, precision is not enough.

New metal ink because can be used for a sheet-fed offset printing machine or flexo printing machine, screen mesh without limit, so the available large sheet metal particles, using a large sheet of metal particles reflecting light effect to enhance ink metal effect, but with the metal micro tablet on ink viscosity, make metal ink sheet metal particles can not be too big. Metallic ink and we usually know organic pigment ink, ink not ink particles with metal and raise the degree of increase so that the ink becomes sticky. This is mainly because the sheet metal in the flow of the process to produce rotation and swing, the energy needed is more ordinary particles, larger microchip in the ink medium movement took a lot of thrust, so the ink viscosity will increase, if the ink is too thick, will produce the printing density is uneven and a phenomenon. In contrast, the tiny microchip only very small thrust, flow can achieve unobstructed nature, viscosity so also is behaved very low. A large metal pieces can be better enhanced ink metal effect, but in order to achieve a low viscosity and printing uniformity effect, often need smaller microchip. Generally speaking, the ink sheet metal is not the same size and shape, in order to get a good printing effect, new metal ink sheet metal particles are strip-shaped microchips, the shape of the microchip to meet the size of the premise, can reduce the microchip in the ink medium motion required thrust, thus reducing the ink viscosity to.

New metal ink another feature is the ability to effectively avoid the water-based ink and water-based ink ( ink carrier or other ) produced by chemical reaction, the corrosive chemical reactions often affects the ink storage and gloss characteristics, so the new metal ink than traditional metal ink with metallic luster, but also according to the need, the reasonable collocation and ink colors, red, green, blue and other produce colored metallic ink, but attention must be paid to the use of color sequence, such as improper arrangement, not only to reach the expected effect, will result in printing the fault.

Metallic ink and ordinary ink compared to many differences. Most ordinary ink are first passed through the dye mixture, and then through the ball or roller mill grinding until after the finished product. But for the metal ink can be different, the mixing process is soft, not by grinding with grinding, will make the ink out of metallic luster. Furthermore, metallic ink composition and conventional pigment inks are very different, metal printing ink is made from sheet metal micro body, volume than the ordinary organic pigment ink particles in a big. Printing is to minimize ink flake coating, the metal pieces reflection effect. In contrast, organic ink to make a fully mixed organic ink infiltration, ability to enhance the cohesive force and the production of light effect. Another issue requiring attention is sheet metal in the ink medium distribution uniformity. If the metal sheet in the ink medium distribution of words, will make the printing to achieve the best effect of the metal. While the sheet metal distribution depends on the ink resin and solvent properties. The resin can make sheet metal distribution is very uniform, if observed under a microscope, you can see the distribution mode, its printing effect is very good. But the use of poor resin made of ink, its metal micro plate distribution is uneven, microscope can see metal sheet is glued into a ball, distinguish single microchip is difficult, so the printing of printed matter, its metallic luster effect will be greatly reduced.

Of course, but also a concrete analysis of concrete problems, different ink in different printing will have different performance ability, is the use of the best strip of water-based ink, but also according to the different printing choose different formula.