Dynamic Crease Stiffness Reduction Ratios under Ultra High Speed Packaging Line Strain Rates
Dynamic crease stiffness reduction ratios must be evaluated under operational strain rates of 1000°/s to 5000°/s to prevent high-speed cartoning line jams.
Packaging Line Speed
Throughput Rate
The velocity at which cartons are formed, filled, and sealed on an automated production line determines the hourly output of a packaging facility. This packaging line speed is directly influenced by the physical uniformity of the paperboard cartons. If the board stiffness or score strength varies, the line must be slowed down to prevent jams and product damage.
Carton Feed
At high speeds, the vacuum cups of the carton erecting machine must grip and open each carton in a fraction of a second. If the crease stiffness of the carton is too high, the carton will not open fully or may pop back, causing a line stoppage. The cartonboard must have a consistent spring-back force and crease reduction ratio to ensure that the carton panels erect reliably without twisting or tearing as the machine runs at its maximum rated velocity.
Operational Efficiency
Maintaining a high and stable operating velocity is critical for reducing the cost per unit of packaged goods. When the line runs smoothly, the mechanical wear on the machinery is reduced and the product waste is minimized. This stable running depends on the converter delivering board that conforms to tight dimensional and mechanical specifications.