Effect of flat speed of carding machine on the carded sliver and yarn quality

Processing parameters play an important role in influencing the quality of the final product in any kinds of production. The aim of this project is to observe the quality of the carded sliver and yarn by applying different flat speeds on the carding machine while the other machine parameters were fixed. Five flat speeds (200, 240, 280, 320, and 360 mm/min) have been used to produce slivers and yarns. Sliver fineness of Ne0.11 and yarn of two different counts (Ne24 and Ne30) were produced for assessing the quality. It is found that the neps, short fibers, and unevenness of sliver and yarn are reduced proportionally with the increase of flat speed, whereas the tensile properties of yarn are increased. The unevenness and tensile properties are found to be best for flat speed 360 mm/min with significant increasing of waste percentage. The Ne24 and Ne30 cotton yarns have comparable unevenness and tensile properties. The quality of yarn improved continuously as the yarn becomes finer.