The foil printing machine can be used in letterpress printing, gravure printing and flexographic printing. Letterpress printing is suitable for small batch printing, gravure printing and flexographic printing for high volume roll paper printing. The following measures must be taken during the printing process: large printing pressure is required. The aluminum foil has strong barrier properties and poor absorbency, and the pressure causes the surface of the printing plate and the aluminum foil to contact with a large area and forcibly adhere the ink. The ink is required to have strong adhesion and a fast drying speed. A printing ink can be used, and the resin type offset printing fast fixes the ink or the mixed ink of the offset printing and the plastic ink. A drier is usually added to the ink to increase the drying speed. For example, a gravure printing device must be installed with a hot air drying device. Before selecting the ink on the machine, you must first make a sample to check whether the hue, dryness, etc. meet the requirements. In the current packaging substrate, the barrier property of aluminum foil is better. Aluminum foil is a high-grade printing and packaging material. In recent years, aluminum foil printing has become an important branch of the gravure printing industry. The application of aluminum foil in packaging is mainly used for trademarks and some high-grade food packaging such as beer top labels, chocolate packaging, etc. Compared with paper and plastic, aluminum foil has the characteristics of thin, brittle and easy to wrinkle, which is often seen in the printing process. Some problems have arisen.