Preparation method of semi-worsted wool high-elastic core-spun composite yarn

The invention relates to the technical field of textile yarns, in particular to a preparation method of a semi-worsted wool high-elastic core-spun composite yarn. The preparation method specifically comprises the following steps of step 1, selection of raw materials comprising 90S basolan Australasian wool and polyester filaments; step 2, rewinding of the polyester filaments, wherein reeling equipment is used for spooling the polyester filaments, and preparations are made for core-spun production; step 3, preparation of pure wool rough yarns, wherein the 90S basolan Australasian wool is subjected to dyeing, wool lubricating, carding, drawing and roving in sequence to prepare the wool rough yarns; step 4, preparation of the core-spun composite yarn, wherein the polyester filaments and the pure wool rough yarns are subjected to spinning, spooling, doubling and two-for-one twisting to prepare the high-elastic core-spun composite yarn. According to the preparation method of the obtained semi-worsted wool high-ela