Spandex is the abbreviation of polyurethane fiber, which is an elastic fiber. It has high elasticity and can be stretched 6 ~ 7 times, but it can be restored to its original state quickly with the disappearance of tension. Its molecular structure is chain-like, soft and malleable polyurethane, and its characteristics are enhanced by connecting with hard segments.
Extended data:
1, classification
Elastic fibers (spandex) are divided into two categories: one is polyester chain; One is polyether chain. Polyester elastic fiber has strong oxidation resistance and oil resistance; Polyether elastic fiber has good mildew resistance and detergent resistance.
2. Advantages
Spandex has excellent elasticity. The strength is 2 ~ 3 times higher than that of latex yarn, the linear density is thinner and it is more resistant to chemical degradation. Spandex has good acid and alkali resistance, perspiration resistance, seawater resistance, dry cleaning resistance and wear resistance.
3. Application
Spandex can be used in garments that can be stretched to meet comfort requirements. Such as: professional sportswear, fitness clothes and sportswear, diving suits, swimming suits, swimsuits for competitions, basketball suits, bras and suspenders, ski pants, discos, jeans, casual pants, socks, leggings, diapers, tights, belts, underwear, jumpsuits and spandex underwear.
The proportion of spandex used in ordinary clothes is very small. In North America, it is rarely used in men's wear, but more used in women's wear. Because women's clothing requires close fitting. When in use, a large number of other fibers, such as cotton and polyester blends, are added to minimize the gloss.
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