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.
Phenolic Matrix Strips
Creasing Accessory
Hard wearing consumables used to form precise creases provide a reliable middle ground between paper matrix and steel counter plates. Phenolic matrix strips consist of a resin-based material that is bonded to a carrier and features a pre-cut channel. These strips are applied to the cutting plate to create a durable path for the board during the creasing process.
Material Composition
The phenolic resin provides a high level of hardness and resistance to heat and pressure. This prevents the channel from widening or collapsing during medium to long production runs. The strips are available in a wide range of widths and depths to suit different board thicknesses.
An adhesive backing allows for quick installation on the die-cutting machine. The accuracy of the channel ensures that the crease is formed consistently across the entire sheet. Using this material reduces the frequency of stops for matrix replacement compared to standard pressboard options.
Performance Range
The choice of matrix size is determined by the caliper of the board and the thickness of the creasing rule. Proper alignment with the rule is required to prevent the board from tearing or bursting. These strips define the quality level for converters who require more durability than paper can provide.
The product serves to maintain the structural integrity of the carton throughout the conversion process.