This TAPPI technical information paper presents a method for improving the squaring of flap cut center-special boxes produced on high-speed printer slotters, rotary diecutters, and flexo folder gluers. It explains the use of notched cutting rules, flap alignment, scrap section sizing, and manual removal procedures to support the production of high-quality squared boxes. The document includes three figures illustrating the notched cutting rule, edge alignment, and scrap section dimensions, along with keywords and working group information.
Application Scope: Intended for corrugated packaging engineers, die-cutting and folder-gluer operators, box designers, and manufacturing professionals working with flap cut boxes and high-speed converting equipment.
