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Single covered yarn is the conbination of an outer yarn covered on the spandex. In the process of post-processing, the exposed spandex silk is easy to be worn and broken.
Mainly used for socks, weft underwear and other elastic fabrics.
Double covered yarns are two layers of filament or yarn on the outer layer of spandex core wire, which are usually in opposite directions.
The core yarn spandex is covered to a high degree, and the bare phenomenon is light.
It is mainly used for elastic fabrics such as gaiters, elastic straps, sock muffs and pantyhose.