Method of measuring average cross-sectional properties of yarn or filament by light scattering analysis

摘要

A method for determining a parameter that characterizes the cross sectional shape of a running multilobal filament or yarns thereof, by light scattering analysis. The analysis is based on detecting and measuring the intensity of light scattered from the yarn in the plane of the incident beam which is oriented perpendicularly to the longitudinal axis of the yarn. By comparing the intensity of the scattered light with previously measured standard values for the particular yarn geometry being measured, using correlation techniques, the average cross sectional shape parameter can be determined.