This document discusses various printing techniques that can be used for packaging. It begins with an introduction to printing and reasons for choosing printing for packaging. It then provides details on different types of printing such as flexography, gravure, letterpress, offset lithography, screen printing, thermography, and digital printing. For each technique, it describes the process and examples of applications. The document emphasizes that flexography and offset lithography are commonly used for packaging printing. It concludes by noting the engagement and distribution advantages of printed communication.