Steel Counter Plate

Milling Channel

Channels are milled into the steel plate using precision CNC machines to match the exact layout of the creasing rules. The width and depth of each channel are calculated based on the thickness and stiffness of the specific paperboard being run. When the press closes, the creasing rule forces the board into the channel, delaminating the internal structure of the board without breaking the outer surface.

This mechanical action reduces the crease stiffness, allowing the carton to be folded easily on the automatic gluer line without any cracking of the printed outer liner.

Tooling Longevity

Steel plates do not wear out or compress during long production runs, ensuring that the crease quality remains identical from the first sheet to the last. This durability makes them ideal for jobs that are run repeatedly, as the plate can be stored and reused without needing to be remade. Using steel plates reduces make-ready times and increases the overall efficiency of the die-cutting process.