Developments in polymer and process technology have led to faster production speeds in nonwoven fabric manufacture. Producers operating in practical mill conditions can manufacture nonwovens fabrics at speeds of 260 meters per minute and effective carding machine widths of 4,000 millimeters, corresponding to a total output rate of greater than 1,000 kilograms per hour, Polypropylene fibers intended for high speed carding require additives that prevent ejection by centrifugal force and must allow the necessary draft between card and calender rolls without surrendering web cohesion. Hergeth Hollingsworth recently introduced the Sog2 H5 F4 d2 R2 high speed roller carding machine, featuring a radomizing roller diameter of 550 millimeters on the doffer, a constant card aspiration system, seal systems on the rollers, the utilization of the airflow, and an inverted feed tray. Rolls at the top and the bottom have improved the machine direction/cross direction strength ratio of the finished web.