From：Join High (Xiamen) Fiber Tech Co., LTD Release time：2018-09-13
The yarns of cotton, wool and other fibers which are composed of twisted yarns are called staple spun yarn, and their structures are complicated and slightly different due to different spinning and twisting methods.
In general, the center of the yarn is a core composed of dense fibers, and the surface of the yarn has a pile region formed by the exposure of the fiber ends. A retracted spun yarn structure indicates that there are more complex implications between the layers of the core than the filament yarn. There are also many fiber knots in low quality spun yarns. Due to the random arrangement of the fibers, plus changes in twist and fineness, coarse details in the direction of the yarn length are caused. The quality and uniformity of the spun yarns vary greatly with the addition method. The structure of the spun yarn is bulky and full of appearance, and has good heat insulation and comfort; this is mainly due to the fact that the voids in the yarn contain air.