Accounting for Wet Finishing Mass Additions in Commercial Mill Procurement
Accounting for wet finishing mass additions separates greige fiber weight from chemical solids to prevent yield overbilling and structural fabric downgrades.
Liquor Concentration Drift
Solution Intensity
Chemical strength in a dyeing or finishing bath fluctuates as the fabric continuously passes through the liquid. Liquor concentration drift occurs when the rate of chemical exhaustion by the fibre differs from the rate at which the bath is replenished.
Chemical Absorption
Selective removal of components by the textile often depletes certain parts of the liquor faster than others. In the presence of liquor concentration drift, the chemical balance of the bath changes over the course of a production run, leading to inconsistent results between the start and the end of the batch.
Variations Impact
Uneven shade or performance properties arise when the chemical intensity is not maintained at a constant level. Because liquor concentration drift is a common challenge in continuous processing, automated dosing systems are used to monitor the bath and inject concentrated chemicals as needed to stabilize the mixture. This stabilization is necessary to ensure that every meter of fabric treated in the machine receives the exact same amount of finish, preventing customer rejections due to color mismatch.
Monitoring Window
Tracking equipment follows the conductivity or pH of the solution to detect shifts before they affect the quality of the fabric. Effective management of liquor concentration drift requires frequent laboratory titration tests to calibrate the automated sensors and ensure the accuracy of the chemical application.