The application field of paper tube packaging is very wide, in addition to often used to hold powdered solid food such as cocoa powder, tea, sugar, salt, cereal, coffee and a variety of solid drinks, can also be used to hold a variety of liquid food, such as juice, wine, mineral water, milk and so on. It can also be used to contain health food, oil food, frozen concentrated food and so on. For example, about 85% of concentrated citrus juice in the United States is packaged in composite paper tubes.