A cardboard box sealing machine is a machine equipment used for sealing cardboard boxes. It can seal the opening of the cardboard box to protect the items inside from damage or leakage. The cardboard box sealing machine usually uses hot or cold sealing technology, using appropriate tape or adhesive to bond the openings of the cardboard box together to achieve a sealing effect. The cardboard box sealing machine is widely used in logistics, express delivery, e-commerce and other industries, which can quickly and accurately complete the sealing work of cardboard boxes, improve packaging efficiency, and also ensure the sealing and aesthetics of cardboard boxes.

A packaging cardboard box is an outer packaging container that is a collection and arrangement of packaging items that have already undergone various forms of packaging. The bottom of a regular cardboard or corrugated cardboard box is composed of four folding sheets (i.e. two inner folding sheets, also known as small sheets; two outer folding sheets, also known as large sheets or side sheets), and the folding sheets must be folded between the seals before sealing.