Preparation method of pure natural cashmere yarn

The invention discloses a preparation method of a pure natural cashmere yarn. The preparation method comprises the following steps: washing raw cashmere with a natural cashmere washing agent, and then carrying out wool blending spinning with natural wool blending oil, or washing the raw cashmere with the natural cashmere washing agent, dyeing with a natural dye, and then carrying out wool blending spinning with the natural wool blending oil. The cashmere yarn prepared by the invention has higher natural degree and color fastness, and retains the advantages of softness, warmth retention, natural and soft color, flexibility, elasticity and the like of cashmere. In addition, in the down washing, dyeing and spinning processes, natural auxiliaries and dyes are adopted, so that the health of human bodies and the living environment of the human bodies cannot be seriously damaged and destroyed. 本发明公开了一种纯天然羊绒纱的制备方法，包括将原绒用天然洗绒剂洗绒后用天然和毛油和毛纺纱或者将原绒用天然洗绒剂洗绒、用天然染料染色后再用天然和毛油和毛纺纱。本发明制备的羊绒纱，具有较高的天然度和色牢度，保留了羊绒柔软保暖、色泽自然柔和、柔韧有弹性等