Coloration science from color matching to fixation kinetics. Covers dyes, pigments, printing methods, shade reproducibility, and fastness testing. This section explains practical decision criteria, typical test methods, and failure modes that matter in real production. Readers get checklists, calculation steps, and case examples connecting specifications to cost, reliability, and compliance. Links map core concepts to upstream inputs and downstream processes so choices remain consistent across sourcing, manufacturing, and end-use performance. Each article includes definitions, diagrams where helpful, and plain-language notes to help newcomers ramp quickly while giving experienced professionals the depth needed to troubleshoot and optimize. Standards references are cited with context, and whenever trade-offs exist, we make them explicit so you can defend decisions.
Dyeing, Printing, Color Management & Chemical Control
Converts a linear or progressive dosing profile into the stock volume, the average and peak metering rates, the per-step addition schedule and the shortest dosing time the installed pump can actually hold, so the profile that is programmed is the profile that runs.
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Dyeing, Printing, Color Management & Chemical Control
Converts oven length, line speed and curing temperature into the fixation dose actually delivered against a reference time-temperature point, separates the heat-up seconds that fix nothing, and returns the maximum line speed that still completes fixation.
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Dyeing, Printing, Color Management & Chemical Control
Corrects a recipe dose for the assayed strength of the lot actually in the store, and reports the depth shortfall an uncorrected recipe carries, the extra dye each batch consumes, the batches the stock will really make and the value of the strength deficit.
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Wet Processing
Converts an enzyme dose and declared activity into units per kilogram of fabric, derates them for temperature and pH away from optimum, and returns the saturating weight loss, the strength it costs and the time a target weight loss actually needs.
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Dyeing, Printing, Color Management & Chemical Control
Builds ink consumption from drop physics – resolution, pass count, coverage and drop volume – into millilitres and grams per square metre, then adds the purge and maintenance ink that never reaches the fabric and costs it per square metre.
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Dyeing, Printing, Color Management & Chemical Control
Applies Henderson-Hasselbalch to the bicarbonate-carbonate step to give the carbonate fraction at a target pH, computes the Van Slyke buffer capacity the soda ash dose provides, and compares it against the acid released by dye hydrolysis and by the substrate.
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Wet Processing
Calculates cotton scouring weight loss from non-cellulosic content and scouring efficiency, then builds the hydrogen peroxide bleach bath: bath volume from the liquor ratio, litres of commercial peroxide at its actual strength and density, available active oxygen, caustic and stabiliser charges, and the alkali to peroxide ratio.
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Wet Processing
Converts a mercerising liquor between degrees Baume, specific gravity, per cent sodium hydroxide by weight and grams per litre, computes the caustic carried on the goods at a given wet pickup, and turns AATCC 89 barium hydroxide titration figures into the barium activity number.
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Advanced Colour Physics & Wet Processing
Estimates disperse dye lost to sublimation during pad-thermosol curing of polyester: the temperature-corrected loss rate, the share of dye sublimed away over the dwell, and the dye actually retained on the cloth.
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Specialized Chemistry & Advanced Dye Physics
Models the lotus effect on treated fabric: Cassie-Baxter apparent contact angle from solid fraction, the competing Wenzel state, droplet radius and adhesion force from contact angle hysteresis, and the surface tilt at which a drop rolls off.
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