Natural dye composition for dyeing natural fibers and dyeing method for ensuring color (hue and color tone) consistency and consistency

摘要

The present invention provides a dyeing method that allows natural fibers to be dyed with the same invariance by matching colors (hue and color tone) with natural dyes. The method includes a step of preparing a natural fiber yarn package loosely wound at a yarn density of less than about 0.85 g / cm3, and a step of storing a natural dye solution in a tank; a spectrophotometer for yarn package (A) And a preparation step of the dye solution spectrophotometer (B); a step of bringing the yarn package into contact with the dye solution; a step of monitoring the absorbance of the yarn package by the photometer (A) and the absorbance of the dye solution by the photometer (B) A step in which the photometer (A) detects the absorbance at a desired wavelength, and the photometer (B) achieves a state in which the absorbance coincides with the consumed dye solution; an article to be dyed in a dried state of the dye solution; Replacing the weight (WOG) with a ferrous sulfate solution having a concentration of about 1-8% by weight; and contacting the yarn package with the ferrous sulfate solution to fix the dye to the fiber. [Selection] Figure 1