What should I do if the surface of Corrugated Boxes with low weight is uneven?

What should I do if the surface of Corrugated Boxes with low weight is uneven?

In China, the weight of paper is getting lighter and lighter, and the surface of corrugated cardboard often appears uneven, which seriously affects the quality of printing. So, what should be done to ensure the flatness of the cardboard surface?

　　 Corrugated Boxes have uneven surface, which is similar to the rib pattern, but has a bumpy feel. Generally, people think that this is a problem caused by tension. In fact, tension is important, and it is only part of the cause of the problem, and the amount of paste is the most important. Only by controlling the amount of paste can the flatness of the cardboard be guaranteed.

　　 Paste:

　　In the corrugated board production line, the gluing roller mesh of the pasting machine is generally higher than that of the single tile machine. The larger the mesh, the lower the number of nets, and the larger the amount of paste, which will cause the amount of paste to increase. When the amount of paste is increased, the low-gram paper will shrink, and pits will be formed, which will cause unevenness on the surface of the cardboard. Therefore, the amount of paste can be reduced by increasing the number of meshes, and the uneven surface of the corrugated cardboard can be eliminated accordingly.

　　 Under normal circumstances, the cardboard appears uneven, depending on whether the amount of paste and paper strength are reasonable. Of course, other aspects that are easily overlooked may also cause this kind of problem, so when problems arise, we must proceed from the actual situation and formulate corresponding improvement measures.