Unlike cotton, fibers like nylon, polyester and lycra spandex don't come from agricultural sources. The same distinction is made between natural rubber latex gloves and synthetic "non-latex" nitrile gloves, which are made from chemical reactions. Back to top. Nylon Nylon fibers consist of long synthetic polyamide chains. 9 Aug Because it is a superior fiber over latex and it does not contain allergen proteins, Lycra has largely displaced latex as a fiber in clothing except in waistbands and other elastic bands sometimes found in clothing such as straps in swimsuits and undergarments. Pre-made elastic bands of latex are cheaper to. 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 reacting monomers to produce a prepolymer. Once the prepolymer is formed, it is reacted further in various ways and drawn out to make the.