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Spandex is a commonly used fiber variety in our daily lives, characterized by outstanding elasticity, low fineness, high elastic modulus (up to 400% -800% elongation at break), and low specific gravity. Spandex can be blended with textile fibers such as nylon, wool, cotton, polyester, acrylic, and viscose to create a soft, elastic, and comfortable fabric. It is widely used in fitness wear, swimwear, jeans, leggings, underwear, jumpsuits, and underwear. Because women have higher requirements for close fitting clothing, spandex fabric is more favored by women.

For example, if a woman's irresistible lace fabric (including spandex) guesses correctly and wears or places it for a long time, it may simply turn yellow. What is the reason for this?

Because spandex molecular chains contain many reactive groups such as amino groups, they easily turn yellow during high-temperature setting or storage, which affects the quality of products, especially fluorescent whitening fabrics and light colored fabrics. Because spandex uses silicone oil lubricants and other additives in the weaving process to improve its spinning performance. These additives will naturally degrade over time, causing the fibers to turn yellow. In addition, spandex itself is not easy to color, which means that conventional dyes cannot color spandex. Therefore, after dyeing the fabric, if the restoration and cleaning are not sufficient, the so-called yellowing phenomenon may also occur.

Article source: Fancy Thread Manufacturer

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