1. The quality of glue: adhesives are required in the production of packaging boxes, which can increase the hardness and bearing capacity of the carton, and are not easy to deform, and the adhesion is relatively good.

2. The quality of cardboard: The quality of paperboard is determined by the quality of the base paper, so if you want to use high-quality packaging boxes, you must use high-quality base paper.

3. Production environment of the packaging box: We all know that the packaging box is easy to get moisture, and the compressive strength of the carton will be affected after moisture. Therefore, the production environment temperature and air humidity of the carton are generally required to be low.

4. Paper matching skills: In order to increase the compressive ability of the packaging box, the compressive strength of the core paper should be enhanced first.

5. Poor smoothness of cardboard: exposed bottom appears during printing, resulting in white holes. To solve this problem, the usual method is to increase the printing pressure. However, this in turn has the side effect, on the one hand, the deformation of the dots, and on the other hand, the destruction of the corrugated structure.

6. On the carton production line, when trimming the edge of a single knife, the knife is cut from top to bottom, which often leads to uneven edges of the cardboard paper; When printing with full pages, the edges are not printed and the bottom is exposed. Pressurization can mitigate this phenomenon, but it cannot eliminate it.

7. When printing four-color hierarchical plates, pasting often occurs, so that the printed matter is connected to the Internet points.

8. In large-block field printing and stacked color printing, the color ink mixed with two or more inks is used for printing, and it is easy to drag the color when grooving, crimping and die-cutting.