While most of the emphasis in rotary converting is placed on the cutting rule, the importance of the creasing rule cannot be overstated. The creasing rule is an important factor in controlling the sheet as it passes through the diecutter. Using a crease that is too high may result in cracked scores, while a crease that is too low may create dimensional problems.
National manufactures a complete line of 4, 6, and 10 point rotary creasing rule. We maintain a large inventory of all standard heights curved to fit all major rotary diecutters.