What Is Spandex Fabric

- Apr 14, 2020-

    Spandex fabric, also known as polyurethane fiber fabric, is spandex fabric. Spandex is a kind of polyurethane fiber, which is also known as elastic fiber because of its excellent elasticity.


Features

    Spandex is a kind of polyurethane fiber, which is also known as elastic fiber because of its excellent elasticity. The main features of spandex fabric are:

    spandex elasticity is very high, general products do not use 100% polyurethane, more in the fabric mixed with 5~30% of the proportion, all kinds of spandex fabrics have a comfort of 15%~45% elasticity.

The spandex fabric is often made of composite yarn, that is, with spandex as the core, with other fibers (such as nylon, polyester, etc.) to make the skin into the core yarn elastic fabric, its good adaptability to the body, is very suitable for making corsets, no pressure.

    Spandex elastic fabrics are similar in appearance style and wear performance to similar products coated with outer fiber fabrics


Usage And Varieties 

    Spandex fabric is mainly used in the manufacture of bodysuit, sportswear, protective belt and sole. According to the purpose, the varieties can be divided into warp elastic fabric, weft elastic fabric and warp - weft bidirectional elastic fabric.


Advantages

   The biggest advantage of spandex fabrics is good elasticity, can stretch 5-8 times, do not age, spandex cannot be woven alone, weave together with other raw materials commonly, spandex proportion is about 3-10% between, the proportion of spandex of swimsuit fabric reaches 20%.

    Spandex fiber is a synthetic fiber with high breaking elongation (more than 400%), low modulus and high elastic recovery rate. Multi - block polyurethane fiber China commodity name. Also known as elastic fiber. 

   Spandex has high elongation (500% ~ 700%), low elastic modulus (200% elongation, 0.04 ~ 0.12 g/dener) and high elastic recovery rate (200% elongation, 95% ~ 99%). The physical and mechanical properties are very similar to those of natural latex silk except for its high strength. It is more resistant to chemical degradation than latex silk, with moderate thermal stability, softening temperature of about 200℃ above. Most of the dyes and finishing agents used in synthetic and natural fibers are also suitable for the dyeing and finishing of spandex. 

   Spandex resistant to sweat, seawater and a variety of dry washes and most sunscreens. Long-term exposure to the sun or in chlorine bleach also causes discoloration, but the degree of discoloration varies greatly with the type of spandex.