
Length Uniformity
-
Author: Elise
/
Length uniformity is given as a percentage of the ratio between the mean length and the upper half mean length of the fibers. The mean length and upperhalf mean length would be the same if all of the fibers in the bale were the same length, and the uniformity would be 100 percent. However, due to inherent fluctuation in the length of cotton fibers, length uniformity will never be 100%. The table below serves as a reference for interpreting length uniformity metrics.
The consistency of yarn length impacts yarn evenness and strength, as well as the efficiency of the spinning process. It is also connected to shortfiber content (fiber content less than 1/2 inch). Cotton with a low uniformity index is likely to include a large proportion of short fibers. Such cotton may be difficult to process and is likely to produce low-quality yarn.