摘要 |
<p>The system (1) has a compression zone (N) arranged downstream to a main drafting zone (H). Lower rollers (22, 32) are arranged upstream respective to an output lower roller (42). The main drafting zone is angled upward relative to a preliminary draft zone (V) at inclination angle (W) of 12.5 degree such that axles (221, 321, 421) of the lower rollers lie approximately in a common plane (E). The output lower roller exhibits larger diameter that is 30 percent larger than that of upstream lower rollers, where the upstream lower rollers exhibit approximately equal diameter.</p> |