Effect of Flat Heel-Toe Difference of a Card on Yarn Unevenness and Usual Faults
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Effect of flat heel-toe difference (HTD) of a card on some parameters of yarn quality was studied by testing the yarn which was produced under different HTDs, doffer speed, and cylinder speed with yarn evenness tester of PT7000. The effect of HTD on yarn parameters was analyzed by using SPSS. The results show that HTD has significant influence on parameters of thickness fault and nep. As a whole, the HTDs of 0.42 and 0.56 mm are beneficial to improving yarn quality in comparison with the other HTDs.