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.
Caliper Tolerance ISO 534
Thickness Specification
Gauging the thickness of paper ensures that printed materials fit within the dimensional limits of finishing equipment. Operators apply caliper tolerance iso 534 to define the acceptable deviation from the nominal thickness of a sheet. This metric governs the consistency of the bulk across a production batch.
Mechanical Measurement
The testing procedure involves a precision micrometer that applies a specific pressure to the substrate between two circular planes. Controlled force prevents the compression of the fibers from skewing the results of the measurement. Each reading represents the distance between the pressure foot and the anvil of the device.
Fluctuations in the moisture content of the environment can alter the thickness of the board during the test. Consistent calibration of the micrometer is required to maintain the accuracy of the data. High precision instruments record the value in micrometers or points to ensure the material meets the technical brief.
Production Constraint
Variations in thickness affect the winding tension and the stacking height of the finished product. Heavy board grades often allow for wider deviations than thin medical papers. The standard establishes the boundary where a delivery is rejected for being outside of the agreed specification.
It provides the basis for resolving disputes between the mill and the converter.