Corrugated roller with depression

The following Type A corrugation diagrams show that the surface of the corrugating roll has depressions, which can have a detrimental effect on the quality of the bonded paperboard, and can also cause poor adhesion in some areas of the paperboard.

Cause The foreign hard object passes through the corrugating roller in operation Measures Check whether there is sand or other foreign matter on the core paper. Avoid contact between the foreign material and the roller. Grind the stain on the roller with whetstone to smooth the surface.