Effect of novel taker-in on yarn quality of polyester fibers

Effect of the novel taker-in on the quality of card slivers and yarns of polyester was studied.The content of short fibers and neps of the card slivers processed at different operation speeds of the taker-in and saw-tooth taker-in was examined by type Y111 roller fiber length tester and visual evaluation.YG(B)021DX table type electronic single yarn strength tester and Premier yarn evenness tester were used to test the strength and yarn evenness of the yarns processed by the taker-in and saw-tooth taker-in.Test results showed that the card slivers processed by the taker-in exhibited less neps and short fiebrs than those by saw-tooth taker-in;the quality of yarns produced by using the taker-in,such as parameters of yarn evenness,yarn defects,breaking elongation,and so on,was better than that by saw-tooth taker-in,especially the parameters of yarn strength and strength CV value.It is concluded that the novel taker-in leads to less fiber damage and lower nep content,this may be attributed to its smooth surface without edge,and smaller tooth-top area.