Male Rule Width

Creasing Mechanics

Force distribution inside the folding process relies on the relationship between this measurement and the corresponding female channel. Proper clearance prevents the fibre from rupturing when the rule displaces the board into the groove. Converters adjust the rule selection based on the specific grammage and stiffness of the stock to prevent cracking at the fold line.

Narrower rules facilitate sharper folds for thin materials, whereas wider rules handle heavier laminates by distributing the pressure over a larger surface area. Consistent rule selection eliminates the need for recalibration during the setup phase of the converting line.

Production Tolerances

Performance limits depend on the exact mechanical alignment of the creasing tools within the press. Deviations outside the specified range produce brittle score lines that weaken the structural integrity of the finished carton. High speed filling equipment requires precise crease geometries to prevent jams caused by unexpected resistance or irregular folding angles.

Engineers maintain these measurements through regular calibration of the die equipment and periodic inspection of the output quality. Tight controls over the width of the tool guarantee that the mechanical properties of the board remain within the defined operating window throughout the life of the package.