Abstract
DuPont first introduced microfibers in 1989. Microfibers have diameters that are less than typical fibers. They are half the diameter of fine silk fiber, one quarter the diameter of fine wool, and one hundred times finer than human hair. Denier, the weight in grams of a 9000-meter length of a fiber, is the term used to define the diameter or fineness of a fiber. While the definition for the thickness of microfibers is varied, a common definition is that microfibers are 0.9 denier or less. For comparison, the nylon stocking is knit from 10-15 denier fiber.