As advertising signs are used in all walks of life for branding, the production process of signs is becoming more and more extensive, as long as it can reflect the means of expression and modification functions, it will be the production process of signs. With the progress of development, in addition to the traditional etching, filling, and polishing processes, copper plates have also developed more decorative processes.
According to the classification of categories, advertising signs and signs can be subdivided into metal and non-metal processes. Among them, are the metal process using the electrochemical treatment method, the current development of the effect of sand, silk, etching, gold, silver, gold sand, silver sand, matte, pearlescent, black nickel, and so on; The non-metal process adopts physical processing methods, such as cutting, lithography, three-dimensional relief, sublimation transfer “crystal” covering, hot stamping, etc.
In addition, there is a new type of black sand gold decoration process, is in recent years to achieve the purpose of a multi-type, colorful display of signs, and developed, in the sign production process, it can be described as a unique charm. The beauty of “black sand gold” is that “black sand” is black and nearly gray; “Gold” is bright but not exposed, the so-called gold in the sand, gold in the sand. Then the text to the bright gold leap on the black sand, more dignified and elegant, with human taste, favored in the industry.