The invention discloses a preparation method of novel
wool-like differential fibers, which is characterized by comprising the following steps of: 1) adopting
polytrimethylene terephthalate (PTT) as a
raw material to prepare a pre-oriented
yarn (a); 2) adopting modified high-shrinkage
polyester as a
raw material to prepare fully-drawn high boiling water shrinkage fibers (b); and 3) on a DTY
machine, passing the pre-oriented
yarn (a) through a roller, a
hot box and a cooling plate, performing drawing false twisting on the pre-oriented
yarn on a false twister, converging the pre-oriented yarn with the high boiling water shrinkage fibers (b) in front of two rollers, and performing network compounding on the pre-oriented yarn and the high boiling water shrinkage fibers, and then passing the pre-oriented yarn and the high boiling water shrinkage fibers through two hot boxes to obtain a composite yarn product. The preparation method develops the novel
wool-like differential fibers, the PTT fibers floating on the
surface layer are much closer to
wool fibers in performance and are superior to common wool-like products in the performance of elastic
recovery, handfeel, antistatic property,
dyeing and the like, and simultaneously, the treatment of forming different sections of the two raw materials ensures that the products have significant improvements on luster and
fibrillation resistance.