Abstract: The present disclosure provides composite yarn, apparatus and methods preparing thereof. The composite yarn of the present disclosure includes wrapping fibers and a central yarn that is formed by a first body yarn and a second body yarn, wherein a portion of the wrapping fibers are combined with the central yarn in at least one of the following states: a first state, a portion of the wrapping fibers wrap around the first body yarn or the second body yarn; a second state, a portion of the wrapping fibers wrap around the first body yarn and the second body yarn respectively at the same time; a third state, a portion of the wrapping fibers wrap around the central yarn. The composite yarn of the present disclosure has low twist factor and high strength, which solves the problem of severe strength loss associated with low twist factors existing in conventional low-twist techniques.

Abstract: The invention discloses a multi-component elastic yarn comprises two fiber rovings and two core filaments, wherein each core filaments is elastic, low-elastic or inelastic filaments or any combination thereof. The invention also discloses preparation method and apparatus. The multi-component elastic yarn of the present invention is featured by smooth surface, low hairiness, fiber does not falling off easily, high strength and good wearing resistance. The textile fabrics made from the present yarn have a smooth surface, low hairiness, good wearing resistance, high tensile and tear strength, soft and smooth hand feeling and high elastic recovery rate. The apparatus of the present invention has strong applicability, is easy to maintain and high cost-effective.