Research on Dyeing Behavior of Tencel Fabric Dyeing with Pu-Erh Tea Dyestuff

Natural dye extracted from Pu-erh tea was applied to tencel fabric. The factors of pH values, temperature, dye concentration and dyeing time on dyeing performance of tencel fabric dyed with Pu-erh tea dyestuff were discussed. The color depth of tencel fabric was investigated on Data Color matching system in terms of k/s values. The optimal dyeing results were obtained at 45°C, pH 3.5, and dye concentration 0.66% owf for 10min. To improve the color depth of tencel fabric dyeing with tea dyes, the meta-mordanting (ferrous sulfate) was added in the dyeing process and the optimal meta-mordanting time for tencel fabric is 45 min.