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Unevenness and Coefficient of Variation of Yarn

Unevenness and Coefficient of Variation of Yarn: The average value for all the deviations from the mean which is expressed as a percentage of the overall mean is called percentage of Mean Deviation (PMD). The coefficient of mass variation CV % is the ratio of standard deviation of mass variation divided by average mass variation.

Industrial Problems During Calendering & Troubleshooting