The advantages are:
1, spandex has high elasticity. Generally, 100% polyurethane is not used in products, but 5-30% polyurethane is mixed in fabrics. The comfort elasticity of various spandex fabrics is 15%-45%.
2, spandex fabric is very adaptable to the body, and it is very suitable for tights, without oppression.
Disadvantages:
1, poor hygroscopicity and small hygroscopicity range.
2, spandex is usually not used alone, but blended with other fabrics.
3. Poor heat resistance.
4, not resistant to oxides, easy to make the fiber yellow and reduce the strength. Spandex fabric is often used in professional sportswear, fitness clothes, diving suits, swimsuits, competition swimsuits, basketball suits, jeans, casual pants, socks and so on.
Extended data:
There are also different brightness forms in spandex production, which usually include:
Clear luster: the surface fiber is smooth, so it is transparent, low friction rate, poor uniformity and chromatic aberration. Suitable for producing short fiber materials, widely used in warp knitted fabrics.
White root, dull: white, uneven surface fiber, large friction surface and good coloring effect. Suitable for producing long fibers, used for thick roots, such as bust and accessories.
Translucent and shiny: titanium dioxide and anti-slip agent are added, which has strong chemical resistance. Swimsuit is widely used because of its chlorine-resistant function.
Sub-gloss: between the original white and translucent, sub-gloss white, suitable for knitting.