Packaging printing is a printing process using various packaging materials as carriers, where decorative patterns, patterns, or text are printed on the packaging to make the product more attractive or descriptive, thereby conveying information and increasing sales. Including printing of packaging boxes, bottles, cans, etc. Packaging printing holds a significant proportion in both the printing and packaging industries, and is an indispensable part of packaging engineering. There are Letterpress printing, lithography, intaglio printing, screen printing, orifice printing and other printing methods. The main elements of printing include paper, ink, color, etc