Designing Counter Die Relief Profiles for Laminated Folding Boxboard
Counter die relief profiles for film laminated folding boxboard require expanding channel widths by twenty percent to prevent outer film shear tearing.
Pertinax Counter Dies
Die Configuration
High density phenolic resin provides the mechanical foundation for specific tooling required during the conversion of folding cartons. These pertinax counter dies facilitate precise creasing by creating a defined channel into which the substrate is pressed by the corresponding rule. Dimensional stability during high speed runs ensures that the depth and width of the crease remains consistent under constant pressure.
Uniform material density prevents premature deformation of the channel walls over extended production cycles.
Tooling Geometry
Precise adjustments to the channel dimensions depend on the thickness and grain direction of the paperboard being processed. The pertinax counter dies feature a milled groove that matches the height of the rule minus the thickness of the sheet. Proper alignment between the die and the creasing rule dictates the quality of the hinge for subsequent folding operations.
Incorrect clearance results in either fractured fibers or shallow creases that fail to provide a clean bend line. Calibration of these components relies on the specific structural requirements of the package design to avoid cracking during the forming stage.
Pressure Distribution
Even loading across the platen ensures that the die functions correctly without localized surface failure. Operators manage the force applied to the counter material to compensate for variations in board caliper across the width of the sheet. Consistent application of this force during the conversion process prevents the material from crushing or thinning the substrate unnecessarily.
High rigidity in the phenolic substrate allows for the maintenance of sharp crease profiles throughout the duration of a production run. Stable performance under compression defines the efficiency of this tooling choice for heavy weight stock.