The invention discloses slubby
yarn which comprises one part of
parallel fiber bundles and one part of bamboo joint
fiber bundles with raised bamboo joint sections. The invention further provides a production method of the slubby
yarn. In the method, a ring
spinning fine
yarn machine provided with a slubby yarn device is adopted, wherein the ring
spinning fine yarn
machine comprises a front roller, a middle roller II, a middle roller I and a rear roller which are sequentially arranged for constituting a four-roller drafting device, and the production method comprises the following steps: inputting roving from the rear roller, and drafting by virtue of the front roller so as to form the bamboo joint
fiber bundle; simultaneously drafting another type of fibers between the middle roller II and the front roller, and then forming the
parallel fiber bundles; and converging the
parallel fiber bundles and the bamboo joint
fiber bundles at a front jaw, twisting the two into one yarn through a twisting structure, and outputting. The slubby yarn has the following beneficial effects: 1) the slubby yarn comprises one part of the parallel fiber bundles, thereby having great strength and enabling the slubby yarn to be applicable to being woven into a high-grade fabric; and 2) the four-roller fine yarn
machine is adopted for production, the product fluctuation is small, the quality of the slubby yarn is improved, and the cost is reduced.