More

Other Synthetic
Commodity Fibers

Back to Index

Fiber & Textile
Associations

Fiber & Textile
Manufacturers

Polyurethane Fibers (Spandex)

Properties

Polyurethane fibers, sometimes called Spandex, are synthetic fibers in which the fiber forming substance is a polymer consisting of at least 85 percent segmented polyurethane. The fiber is produced by reacting a polyester with a diisocyanate.

It has elastomeric, rubberlike qualities and is very durable. In fact, it is even more durable than rubber and can be stretched more than 500 percent without breaking. It has good chemical resistance to many diluted acids and alkalis, but some may damage the fiber. Its strength is rather low when compared to most other synthetic fibers and its heat resistance can vary considerably depending on the composition.

Thermoplastic polyurethane elastomers find many applications and are molded and shaped into many different parts. Most of these elastomers can also be spun into fibers, which are called Spandex.

 

Spandex Fiber Properties

Tensile Strength (Tenacity) Poor
Abrasion Resistance Excellent
Absorbency Fair - Good
Static Resistance Good
Heat Resistance Poor
Wrinkle Resistance Excellent
Resistance to Sunlight Very Good
Elasticity Excellent
Flame Resistance Burns Slowly
Resilience Very Good

 

CoMMERCIAL Spandex Fibers

Major manufacturers of urethane fibers are Indorama, Invista and Asahi-Kasei.

 

Applications

Spandex is used to make elastic textiles such as sock tops, bras, support hose, weatherproof clothing, swimsuits, and other athletic apparel.

Brands

Polymer Properties Database

A-Z Polymer Data

Theromophysical key data on over
two hundred and fifty polymers

Properties

A-Z Producers

Leading synthetic fiber and textile
manufacturers and distributors

 Companies 

Plastics & Rubber News

Latest breaking news and headlines in the rubber and plastic industry

      News      

A-Z Polymer Info

General information on commodity
& engineering plastics and resins

   Plastics