The nameplate is a metal product, which belongs to durable goods. The decorative requirements of the surface are higher and more durable. Therefore, the surface of the printed nameplate is treated with surface treatment such as surface coating, electroplating, anodic oxidation or mechanical beating (brigade, brushed). When printing, to ensure the surface clean, so be sure to wear gloves when working. If the surface has been accumulated grease, fingerprints and dust and other stains, must be trichlorethylene, thinner and gasoline and other solvents to remove. In addition, according to the surface properties of the metal plate selection of the appropriate printing ink, such as amino baking paint and epoxy baking paint surface, use amino and epoxy thermosetting ink; nitro varnish and other natural dry coating , Available solvent evaporation type or oxidation drying ink, but must be used with caution Solvent or thinner to prevent damage to the paint, and after the printing by coating a layer of varnish to enhance gloss and protect the entire surface; metal plate plating The surface can also be printed with thermosetting ink, but pay attention to the difference between the thermal expansion coefficient of the plating layer and the metal to control the heating temperature, to avoid the difference between the expansion coefficient and lead to cracking of the coating; anodized aluminum will form a uniform oxide layer gap Thick about 2 ~ 10μm), has a larger surface area, can improve the coating (ink) adhesion, in addition, there are adsorption properties of the dye, can be used diffusion printing ink or dye production dyeing nameplate.