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Margaret’s Cleaners Dictionary


Nomex Nylon Nytril Fiber


DuPont trademark for a high temperature heat resistant aramid fiber. Nomex is the brand name of a flame retardant meta-aramid material marketed and first discovered by DuPont in the 1970s. It is sold in both fiber and sheet forms and is used as a fabric wherever resistance from heat and flame is required. Both the firefighting and vehicle racing industries use Nomex to create clothing and equipment that can stand up to intense heat.

Uses: A Nomex hood is a common piece of firefighting equipment. It is placed on the head on top of a firefighter’s face mask to protect the portions of the head, not covered by the helmet and face mask. Race car drivers commonly use a similar hood. Military pilots wear one-piece flight suits made of over 92% Nomex.


Produced in 1938, the first completely synthetic fiber developed. Known for its high strength and excellent resilience, nylon has superior abrasion resistance, is easy to wash, lustrous, resistant to damage from oils and many chemicals, dyes well, and is highly flexible. Nylon filament yarns produce smooth, soft, long-lasting fabrics. Spun nylon yarns create fabrics that are light-weight and warm. Nylon is great blended with natural fibers for durability and stretch.

Nylon is a synthetic polymer, a plastic, invented on February 28, 1935 by Wallace Carothers at the E.I. du Pont de Nemours and Company of Wilmington, Delaware, USA. The material was announced in 1938 and the first nylon products: a nylon bristle toothbrush made with nylon yarn was introduced on February 24, 1938, and more famously, women’s nylon stockings were introduced on May 15, 1940. Nylon fibers are now used to make many synthetic fabrics, and solid nylon is used as an engineering material. You’ll find nylon in everything — blouses, lingerie, ski apparel, swimwear, carpets, upholstery, parachutes, sleeping bags, racket strings, hoses, tires and dental floss.

Even though the word nylon was coined, it was never trademarked. A 1978 publication by DuPont explained that the name was originally intended to be “No-Run” (“run” in this context meaning “unravel”), but was then modified to avoid making such an unjustified claim and to make it sound better. The story goes that they changed one letter at a time until DuPont’s management was satisfied.

Nytril Fiber

A manufactured fiber that is soft and resilient, but sensitive to the higher temperatures of ironing. It’s used in articles that do not require pressing such as sweaters, pile fabrics, fake furs and wool blends, where it helps with shrink resistance and shape retention.


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