Non-Contact Caliper Measurement Systems on High Speed Packaging Board Lines
Non-contact optical gauges eliminate mechanical board compression on high-speed lines, enabling tighter cross-machine caliper targets and reduced fiber mass.
Target Shifting
Basis Weight Variation
Adjustment of the grammage threshold during the manufacturing process ensures a substrate remains within the specified tolerance range for a particular paper grade. Target shifting corrects for observed drift in the web profile by modifying the slice lip position or the stock flow rate. This process maintains the consistency of the final product against the ordered basis weight requirements.
Control Deviation
Management of these adjustments relies on the comparison between the real time sensor output and the machine set point. Operators monitor the cross directional profile to detect when the moisture or density levels depart from the defined baseline. Small errors trigger automated changes in the distribution of the fiber slurry across the wire.
Consistent monitoring prevents the accumulation of mass irregularities that lead to winding issues or coating failures.
Quality Threshold
Performance limits dictate the necessity for frequent adjustments to maintain high printability standards. When the product fails to meet the internal grammage range, the automated system executes a correction to align the production output with the desired certification. This calibration ensures that every roll meets the physical requirements for mechanical strength and ink absorption.
High precision control of the dry end conditions defines the stability of the entire converting run.