Optimizing Creasing Tool Geometry for Barrier Coated Boxboard Converting
Optimizing creasing geometry for barrier board requires expanding female channel width and applying polished male rule radii to prevent barrier film splitting.
Milled Steel Counter Plates
Die-cutting Equipment
Performance of heavy-duty tooling compared to temporary paper-based alternatives allows for higher precision in long production runs. Milled steel counter plates are solid metal sheets that feature CNC-machined channels for the creasing rules to strike into. They are used in high volume die-cutting to ensure that the crease remains identical from the first sheet to the last.
Precision Machining
The production of the plate involves milling the grooves into the steel with extreme accuracy to match the layout of the cutting die. This eliminates the need for manual make-ready and reduces the setup time for the press. The rigidity of the steel prevents the channels from deforming under the repeated pressure of the machine.
These plates are often treated with a coating to reduce friction and extend the life of the tool. Consistent crease profiles are maintained even when processing abrasive boards or difficult recycled materials. This level of repeatability is necessary for the high speed requirements of the pharmaceutical and tobacco industries.
Run Capacity
The initial cost of the metal plate is higher than traditional matrix but is offset by the longevity of the tool. Steel counters can be stored and reused for repeat orders without a loss of quality. The use of these plates defines the standard for high precision converting in the packaging sector.
It ensures a stable and predictable output for the most demanding packaging designs.