Proportional Mixture
Proportional chemical application determines the exact mass or volume of active agents required per unit of fabric or liquor in wet processing. In textile finishing, the chemical dosing ratio specifies the relationship between concentrated functional agents and the aqueous bath. This ratio ensures that the targeted chemical deposition on the substrate matches the required performance specification, ensuring consistency across different batches of fabric.
Weaving or finishing mills run continuous checks to ensure this ratio remains constant during the production cycle.
Dyehouse Verification
Volumetric measurements or mass-based scales confirm the concentration during the preparation of finishing baths. An incorrect chemical dosing ratio leads to uneven exhaustion or insufficient functional performance on the fabric surface.
Concentration Adjustment
Variable flow meters control the delivery of the active agent to the bath to maintain the correct chemical dosing ratio. Liquid chemicals are pumped from storage tanks using positive displacement pumps. Automated monitoring systems continuous measure bath concentration to compensate for water carry-over from earlier wet stages.
Functional Bound
The effectiveness of the finish remains dependent on the chemical dosing ratio up to the fiber saturation threshold. Beyond this saturation point, further increases in the dosing ratio lead to surface migration and stiffening of the textile hand. Therefore, chemical dosing ratios must be optimized for each fiber blend and fabric density to prevent chemical waste and maintain desired handle.
