Authors: Qian Lin Guangsong Yan Chongwen Yu
Publish Date: 2010/05/05
Volume: 11, Issue: 2, Pages: 266-270
Abstract
Fiber length distribution has an impact not only on the theoretical unevenness of yarn caused by random fiber alignment but also upon the additional unevenness caused during processing especially in drafting For a given fiber length distribution there is a discrepancy between the theoretical unevenness of yarn which is calculated with Martindale’s equation and the actual unevenness tested by instrument In order to reflect the effect of fiber length distribution on the theoretical unevenness of yarn in this research a kernel function was used to estimate the probability density function of fiber length therefore calculation of Suh’s model for theoretical unevenness was realized On this basis the theoretical and additional unevenness of yarn were calculated The statistical influence of fiber length parameters on yarn unevenness was discussed It can be concluded that decreasing the values of effective length length irregularity and 16 mm SFC by weight would improve the uniformity of yarn
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