Aluminum foil paper, commonly known as gold plate and silver plate paper, is an advanced new packaging material developed in recent years. This kind of paper has bright color, strong metallic feeling and exquisite and bright printing, which plays a icing on the cake for beautifying goods. Now it has been widely used to print various trademarks and foods, especially tobacco and alcohol packaging. This kind of paper has played a great role in protecting commodities, beautifying commodities and increasing their market competitiveness. \x0d\ At present, there are many domestic manufacturers producing aluminum foil paper, and the product quality is equivalent to that of imported products. Because the domestic supply is sufficient and the price is lower than that of imported paper, this paper has been widely used in tobacco and alcohol packaging in recent years. Aluminum foil paper is a kind of non-absorbent paper, which has high requirements for printing. At present, there are gravure printing, offset printing and flexography in China. Because offset printing has the advantages of fast product turnover and cheap plate making, aluminum foil paper is printed by offset printing, so this paper focuses on offset printing technology. \x0d\\x0d\ 1. Characteristics of aluminum foil paper \x0d\ Aluminum foil paper is mainly composed of paper base, aluminum foil and colored layer. Its structure is shown in figure 1. The paper base of this kind of paper is divided into thin and thick, the thick one is cardboard and the thin one is coated paper. There are two kinds of aluminum foil: embossed and smooth. The aluminum foil without color coating is called silver-plated paper, and the one with gold coating is called gold-plated paper. There are many kinds of color paints. Users can negotiate color requirements with manufacturers according to their own needs.