Spandex fibers are produced in four different ways: melt extrusion,
reaction spinning, solution dry spinning, and solution wet
spinning. All of these methods include the initial step of
,to produce a
prepolymer. Once the prepolymer is formed, it is reacted further in
various ways and drawn out to make the fibers. The solution dry
spinning method is used to produce over *4.5% of the world\'s
spandex fibers
