The core-spun yarn is spandex wrapped with short fibers, with spandex filaments as the core and non-elastic staple fibers outsourcing. The core filaments are generally not exposed when stretched. Spandex covered yarn is an elastic yarn formed by covering the spandex with the filament of chemical fiber. It is also formed by covering the elongated spandex filament with the non-elastic staple fiber or the filament in a spiral manner with the spandex filament as the core. There is core exposure under tension.
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