Corrugated roller clamp uneven pressure - middle pressure is low

The following illustration shows the uneven pressure and the low pressure applied to the middle of the web by the corrugating roller. This will lead to inconsistent quality of the cardboard.

Operating side Central Drive side Cause Incorrect medium-to-high middle wear excessively inconsistent pressure at both ends Measure if necessary Replace original roll with medium-high accurate roll If necessary, re-polish corrugating roll Check and correct pressure at both ends