Lamination, also known as "foil", "plastering" or "post-printing". That is, the plastic film coated with the adhesive and the paper-based printed matter are subjected to processes such as heating, pressing, and cooling. The surface of the printed matter is covered with a layer of transparent plastic film with a thickness of 0.012 to 0.020 mm (1.2 to 2 silk) to form a post-processing technology for paper-plastic printed products.

From the point of view of the design of the high-quality Folding Carton, since the cardboard can not be folded and can not be folded easily, it is necessary to grasp a basic principle in order to design the high-quality cardboard carton into a folding box-like structure, that is, the part that needs to be turned back is realized by a slot similar to the skin shell. The structural design idea of the box-type of the fine folding packaging paper box is more from the book box in the fine paper box. The change of the box-type structure is mainly to make some changes in the closure mode of the leather shell and the leather shell, such as some leather shell by three cardboard, some leather shell by four cardboard, some leather shell by five cardboard.