Several slivers are combined into a continuous, ropelike strand and fed to a machine known as a drawing frame (Wingate, 1979). The drawing frame contains several sets of rollers that rotate at successively faster speeds. As the slivers pass through, they are further drawn out and lengthened, to the point where they may be five to six times as long as they were originally. During drawing, slivers from different types of fibers (e.g., cotton and polyester) may be combined to form blends. Once a sliver has been drawn, it is termed a roving.