Virgin SBS against White Lined Chipboard for Retail Facings
Virgin SBS provides superior print brightness, stiffness consistency, and crack-free scoring, whereas recycled board lowers initial cost but adds waste.
Die Cutter Steel Rule Wear
Blade Degradation
Mechanical erosion of the cutting edge on creasing and cutting dies degrades the precision of blanks over long production runs. The progressive loss of sharpness described as die cutter steel rule wear results from the friction between the steel blade and the mineral coatings of the paperboard. This degradation leads to ragged edges, loose paper dust, and inaccurate crease lines.
It forces production stops for blade replacement. The abrasion is particularly severe when cutting recycled boards containing traces of abrasive fillers. This wear increases the total cost of conversion.
Friction Effect
Abrasive components in paper coatings accelerate the deterioration of the metal boundary. During high-speed operation, die cutter steel rule wear changes the profile of the blade from a sharp wedge to a rounded tip. This rounded profile requires greater force to shear the board, which increases machine vibration.
It also fractures the top ply of the paperboard instead of cutting it cleanly.
Maintenance Cycle
Production planning dictates that die tool life must be monitored to avoid sudden failures. By tracking the quality of the die-cut edges, operators anticipate when die cutter steel rule wear has reached its limit. They replace or resharpen the steel rules during scheduled shutdowns.
This prevention ensures that downstream packaging machines do not jam due to misshapen carton blanks.