Greige Preparation Parameters for Heavy Woven Cotton Twill
Preparation of heavy cotton twill requires 85-degree flame singeing, dual-dip enzymatic desizing, open-width alkaline scouring, and 28 Baumé mercerization.
Liquor Wet Pick-up
Absorption Ratio
Chemical finishing of textiles requires controlled application of liquid treatments to achieve the desired functional properties. Liquor wet pick-up is the mass of finish solution retained by a fabric after padding, expressed as a percentage of the dry fabric weight. It determines the concentration of chemical active ingredients that are deposited onto the fibers before drying.
Wet processing managers monitor this ratio to ensure consistent application across the full width and length of the batch.
Chemical Application
When fabric is padded through a finish bath and then squeezed between nip rolls, a specific amount of liquor remains embedded in the fiber structure. The squeezing pressure must be uniform across the entire face of the rolls to prevent variation in the volume of solution retained. If the pressure is uneven, the fabric will dry with varying concentrations of chemicals, causing patches of inconsistent feel or functional performance.
A higher pick-up ratio also increases the energy required to dry the fabric, driving up production costs.
Measurement Method
Technicians calculate this value by weighing a sample of the dry fabric, saturating it with the solution under production conditions, squeezing it, and then weighing it wet. The difference between the wet weight and the dry weight is divided by the dry weight to calculate the percentage.
Processing Variable
Variables such as fabric speed and the temperature of the finish bath influence how much liquid is absorbed. By keeping these factors constant, the finishing line maintains a stable application rate that prevents waste and ensures uniform product quality.