Spandex is an elastic silk that plays an elastic role. If a fabric is added with 5% spandex, it will feel very smooth. The advantages of spandex fabric are high stretchability, good shape retention, and no wrinkling; Soft and smooth to the touch, with the best elasticity, comfortable to wear, and a thoughtful fit; Acid and alkali resistance, wear resistance, and aging resistance; It has good dyeing properties and should not fade. The disadvantage of spandex fabric is poor moisture absorption; Spandex is usually not used alone, but blended with other fabrics; Poor heat resistance.
Spandex is more resistant to chemical degradation than latex fibers, with moderate thermal stability and a softening temperature of about 200 ℃ or above. Spandex has greater strength than latex yarn, and its other properties are basically similar. Most dyes and finishing agents used for Synthetic fiber and natural fiber are also suitable for dyeing and finishing of spandex. Spandex is sweat resistant, seawater resistant, and resistant to various dry cleaning agents and most sunscreen. Long term exposure to sunlight or chlorine bleach can also cause discoloration, but the degree of discoloration varies greatly depending on the type of spandex.