What If The Low Gram Weight Corrugated Boxes Have Uneven Surfaces?

What if the low gram weight Corrugated Boxes have uneven surfaces?

In China, the gram 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?

The surface of Corrugated Boxes is uneven, but it is similar to the ribs pattern, that is, it has a bumpy feeling. Generally people think that this is a problem caused by tension. In fact, although tension is important, it is only part of the cause of the problem, and the amount of paste is the most important. Control the amount of paste to ensure the flatness of the cardboard.

Paste:

In the Corrugated Boxes production line, the mesh of the paste roll of the general paste machine is higher than that of the single tile machine. The larger the mesh mesh, the lower the number of meshes, and the larger the amount of paste, which will result in an increase in the amount of paste. When the amount of paste is increased, the paper with low gram weight will shrink, and a pit phenomenon will be formed, which will cause unevenness on the surface of the cardboard. Therefore, the amount of paste can be reduced by increasing the mesh number, and the uneven surface of the corrugated cardboard can be eliminated accordingly.

Under normal circumstances, if the cardboard is not flat, it depends on the amount of paste and whether the paper strength is reasonable. Of course, other aspects that are easily overlooked may also cause such problems, so when problems arise, we must proceed from the actual situation and formulate corresponding improvement countermeasures.