Despite the high degree of perfection of ring spinning, the ring spinning process has not yet achieved ideal performance. The schematic view of the yarn formation zone on the left in Fig. 72 illustrates the problem. The drafting system of a conventional ring spinning machine unfortunately delivers the fibers over a width W which is considerably larger than width WS of the adjacent spinning triangle. This means that some edge fibers are lost or attached in a disorderly configuration to the yarn core already twisted. In other words, today’s ring yarns have a structure that is not nearly as ideal as might be supposed.