Dyeing: Dyeing (染色)
A process that colours tape, monofilament or finished chain to match a customer colour standard. Temperature curve, dye concentration, bath ratio, pH and time must be controlled to achieve level shade and good fastness. Dyeing is followed by washing and setting to remove unfixed dye and stabilise dimensions. Shade is checked against the approved standard under defined lighting, and fastness to washing, rubbing and light is tested.