Garnetting and carding of non-wovens is a general adaptation of the common textile process, which is used for making slivers, yarn and threads. However; in non-wovens the web is not gathered and drawn to make a sliver, but is processed at full width.
The first carding machine was invented about 1774. Compared to spinning and weaving, carding and garnetting is a relatively recent development. Although there have been many modifications and refinements, the modern card is still a series of rotating clothed cylinders. With the advent of metallic wire clothing, the door was opened to numerous combinations of wire types, relative speeds and rotations, etc. The ability to utilize these variables eventually led to the invention of the mechanical randomizing card.