AB yarn is a thread that is spun by mixing two different raw materials. Now it is generally called siro yarn, which is a yarn made by siro spinning technicians. Because there are two rovings, it is sometimes called AB yarn.
(1) The simultaneous twisting of siro spinning makes the yarn have a special structure. The fibers on the surface of siro spinning are neatly arranged, the yarn structure is tight, the hairiness is less, and the pilling resistance is good.
(2) Compared with stranded fabrics, siro fabrics are softer and smoother.
(3) Compact siro spinning can be used for woven fabrics and knitted fabrics, and can also be used for high-count and high-density fabrics instead of strands.