Dynamic Viscosity

Flow Management

Coating stations rely on accurate viscosity profiles to ensure uniform coverage across the substrate surface. Inconsistent levels lead to uneven film build, which results in streaks or irregular drying patterns on finished paper stock. Sensors in inline systems monitor the liquid condition continuously to signal pump speed adjustments.

Precision in these adjustments prevents starvation of the applicator roll and avoids excess consumption of expensive coating materials.

Material Consistency

Measuring this property involves applying a known force to a liquid sample and recording the resulting flow rate under standardized environmental conditions. Rotational viscometers quantify the torque required to turn a spindle at a set speed within a container of the sample fluid. Laboratory technicians correlate these test results with known performance benchmarks to determine batch suitability for the production line.

Standardized units like the centipoise provide a common language for manufacturers and suppliers to communicate the requirements for specific adhesive grades. Correct viscosity control ensures that bonding agents penetrate the fibre matrix appropriately without soaking through the sheet to cause mechanical failures later in the converting process.