Nylon

History of the use of Nylon : pdf
This synthetic fiber was introduced in the 1930s. It was another early substitute for silk and soon quickly became the fiber of choice for women's stockings. The first commercial production of nylon in the United States was in 1939 by the E.I. du Pont de Nemours and Company.
Wallace H. Carothers, a chemist of the Dupont Company played the leader in this development of nylon. This man-made fiber is the second most used fiber in the United States.
Production of nylon :
Nylon is made by forcing molten nylon through very small holes in a device called a spinneret. The streams of nylon harden into filament once they come in contact with air. They are then wound onto bobbins. These fibers are drawn (stretched) after they cool.
Drawing involves unwinding the yarn or filaments and then winding it around another spool. Drawing makes the molecules in each filament fall into parallel lines. This gives the nylon fiber strength and elasticity.