Nep Disentangling Mechanisms
topic
While nep count increases through the blowroom, the card reduces them to a small fraction. Neps are mostly opened out, not eliminated; only a fraction leaves unopened via flat strippings. Improvement comes from reducing fibre density on the cylinder (larger widths), closer spacing between clothing surfaces, sharper clothing, optimal licker-in speeds (not too low), low doffer speeds, and lower throughput.
Role
Nep disentangling is a key quality parameter for card performance. The machine design and its components exert the strongest influence on neppiness, more so than operational settings. The card's nep reduction capability is the primary justification for the industry maxim about its central importance.
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