Spandex wrapping is an elastic yarn formed by using spandex yarn as the core and wrapping the elongated spandex yarn in a spiral shape with filament or staple fiber yarn. Let's take spandex corespun yarn and spandex wrapping yarn as examples. Spandex core-spun yarn is a spandex wrapped with staple fibers, with spandex yarn as the core, covered with non-elastic staple fibers, and the core yarn is generally not exposed when stretched. Spandex yarn wrapping is made of chemical fiber filament to wrap spandex, and it is also an elastic yarn formed by using spandex yarn as the core, and non-elastic staple fiber or filament wrapping the elongated spandex yarn in a spiral way. There is a core exposure phenomenon in the tensioned state.
