Another common legend is that nylon is short for NowYou, LazyOldNippon. The background is that a large number of cheap Japanese textiles hit the western society in the 1930 s, so nylon is regarded as a competitive product against Japanese textiles.
Although the word nylon is very popular, it has never been used as a trademark or protected by a trademark.
During World War II, the allied forces used nylon parachutes (previously made of Asian silk), and tires, tents, ropes and other military materials were also made of nylon. It is even used to make paper for printing American currency. At the beginning of the war, cotton accounted for 80% of the fiber raw materials, and the other 20% was mainly wood fiber. In August of 1945, the proportion of cotton decreased to 75%, while the proportion of man-made fiber increased to 25%.