Theoretic equation of airflow instrument for cotton fiber and its modification

In order to investigate the rules and factors influencing the measurement of maturity and linear density of cotton fiber using compressed airflow testing instrument,the theoretic relations of the maturity ratio and other indexes of cotton fiber measured by compressed airflow testing instrument were analyzed,and thus the modified theoretic equation of compressed airflow testing instrument for cotton fiber was derived.The results indicate that there are at least three independent variables in the theoretic equation of compressed airflow testing instrument for cotton fiber,including linear density,maturity ratio and mean outer theoretic diameter in the middle part of cotton fiber.The measurement of the maturity and linear density of cotton fiber by two-compressed airflow testing instrument is not quite reasonable and the variety of cotton fiber has great impact on the testing results of compressed airflow testing instrument.Therefore,it is necessary to develop a new compressed airflow testing instrument for cotton fiber.