The invention provides a
yarn dyeing method, and belongs to the technical field of
textile related equipment. The technical problems that for an existing
dyeing method, the
dyeing efficiency is low, and dyeing is inconvenient are solved. The
yarn dyeing method comprises the steps of 1,
yarn preparation and inspection, wherein the yarn quality is inspected before yarn dyeing is conducted, and it is required that the appearance of yarns is clean and free of
stain, the yarns are neutral, the stacking time must not be over 8 h, and the yarns are covered with wet cloth; 2, feeding, wherein yarns are put into a dye vat and arranged on a yarn dyeing rod; 3, dye preparation, wherein
anthraquinone vat dye is prepared in a dye
barrel, 5 g-6 g of caustic soda and 5-6 g of
rongalite are added according to each part by
mass of
raw material with an
anthraquinone type structure, water is injected to obtain a solution, and 0.2 g / L-0.5 g / L of bone glue retarding agent is added; 4,
dye injection and dyeing, wherein the prepared dye is injected into the dye vat; 5, yarn taking-out. The yarn dyeing method has the advantages of being high in dyeing efficiency and uniform in dyeing, and the yarns subjected to dyeing is fluffy and full in hand feeling.