Effect of Flats Speed on Card Sliver Quality

• Published in: 东华大学学报（英文版） Vol. 28; no. 1; pp. 93 - 95
• Main Author: 曹继鹏 孙鹏子
• Format: Journal Article
• Language: English
• Published: School of Clothing & Textiles, Eastern Liaoning University, Dandong 118003,China 2011
• Subjects: impurity; flats speed; Uster AFIS; nep; mean length by number; short fiber content; card
• ISSN: 1672-5220

The effect of flats speed,especially higher flats speed,on card sliver quality was studied.Card sliver produced at seven flats speeds was tested with Uster AFIS.Test results show that over-high flats speed is not beneficial to removing impurities and neps of card sliver.The flats speed from 450 to 550 mm/min is the best for removing impurity;while a speed of 450 or 650 mm/min is the best for removing neps of card sliver.The 1 050 mm/min flats speed is the best for removing short fibers.Accordingly,the flats speed of 450 mm/min is the most advantageous to improve the comprehensive quality of card sliver.It is also found that installing back-web-cleaner is very helpful to remove neps.It is also favorable to reduce short fibers,thus increasing the average length.But it is not helpful to reduce impurities in the sliver.