Crystal gloss refers to the fact that one side of the printed product or the transparent ink layer contains substances like crystals. Under the change of the daylight or the incident angle of the light, it can produce a special effect that is colorful and shiny.
Crystal gloss printing is generally achieved by two processes. One is to first print the printed matter with a higher viscosity ink to form a bonding layer, and then move the printed matter to a heat source to dry it. The crystalline flashing material is mostly made of particles sprayed with polyester sprayed metal layer and pulverized, or formed by pulverizing with special flashing fibers. The other is to mix the crystalline flash body with the connecting material to make the surface of the particles to be made into ink, and directly transfer it to the printed product by printing means. Generally speaking, dry sprinkling bonding method can choose crystalline flash with coarser particles, and its flash effect is better. However, because the particles are easy to scatter and fly, the work scene is dirty and the operation is cumbersome, and it is not suitable for large-scale production. The ink-making printing method is simple, hygienic and suitable for mass production. However, since the flash crystal is contained by the ink layer, ink transfer and other factors must also be considered. The crystal cannot choose too coarse particles, and its flash effect is relatively poor.
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