The unprocessed yarn is provided on packages in a creel (up to 72 packages). At a speed of up to 700 m/min, the yarn is pulled off the packages and entered into the heat setting process. There are two basic ways of transportation of the yarn through the process. One way is to place the yarn in coils or a "figure 8 pattern on a belt or to wrap it onto ropes arranged as a polygon in order to convey it through the process. With Frieze yarns only belt conveying is utilized. Frieze is produced by a special stuffer box, the so-called Twinroll-Box (TRB).