Hairiness of staple fiber yarns Part II: model validation

Abstract

An attempt is made here to verify and validate the probabilistic models of yarn hairiness reported in Part I of this work. It is shown that the double exponential model of yarn hairiness corresponds more close to the experimental results than the single exponential one. This suggests that two types of hairs of very different nature are present in yarns. The first type of hairs falls with the increase in yarn radius quickly to (practically) zero. These hairs create something like “moss” on the yarn surface. They are considered to be good as they bring pleasant handle, fullness of the fabric, etc. On the other hand, the second type of hairs falls with the increase in yarn radius very slowly. These hairs are created mostly from “long flying fibers,” which often bring difficulty in the subsequent technological processes, namely weaving as well as make the fabric look bad.

Keywords:

• hairiness
• blackening function
• half-decrease interval
• yarn diameter
• packing density

Disclosure statement

No potential conflict of interest was reported by the authors.