Specialty yarns including high twist, low twist, untwisted, high tenacity,涡流纺, reverse twist, and bamboo yarn. Offering fine cotton (BCI), organic cotton (GOTS, OCS), recycled cotton, polyester (GRS), African cotton, and Pima cotton yarns with certificates. Hard-to-find yarns, we have in stock.
Henan QiangNian (Wei Shu He Sheng) Product Hotline: 13903781186 - Mr. Liu
Weight uniformity control within the raw sliver: Instead of adjusting the negative pressure (weight) based on the average weight of three segments of raw sliver tested on a single carding machine, adjustments are made based on the average weight of nine segments (including the current shift within one day) from the current test to the previous three tests. This decision determines the adjustment of negative pressure (weight) based on whether the allowable deviation exceeds the limit. Strive to control the raw sliver's weight from running for a long time in the upper or lower deviation range of the standard weight.
Weight Uniformity Control of Raw Sliver: The average weight of 48 slivers produced by 16 carding machines must be within the standard deviation range (the allowable deviation for the average weight of 48 slivers produced by 16 carding machines is stricter than that of a single machine's 3 slivers). If the average weight of the 48 slivers exceeds the allowable deviation, either above or below, the carding machines exceeding the allowable deviation for both upper and lower weight deviations must undergo (weight) negative pressure adjustment.After implementing a new quality control method for the uneven rate of greige yarn weight, we conducted a statistical comparison of the uneven rates of greige, carded, and roving yarns, as well as the quality of the finished yarn. Following the implementation, the quality of semi-finished and finished products has improved, and the number of adjustments made to the greige yarn weight has decreased.Comparative Analysis of Sliver, Parallel Sliver, and Coarse Yarn UniformityTo ensure uniform mixing of various fibers and accurate blending ratios, the carding process must determine a reasonable mixing method. Sometimes, a pre-carding process is required, where one or two types of fibers are pre-carded before being combined with other fiber slivers. For instance, when producing combed cotton-polyester series products, it is necessary to pre-card the polyester slivers. This not only improves the straightness of the fibers but also reduces the weight unevenness of the polyester slivers, ensuring uniform mixing with the combed slivers and enhancing the quality of the yarn."Specialty yarns including high twist, low twist, untwisted, high tenacity, vortex spun, reverse twist, and bamboo yarns. Offering fine cotton (BCI), organic cotton (GOTS, OCS), recycled cotton, polyester (GRS), African cotton, Pima cotton yarns, and certifications. Hard-to-find yarns, we have them in stock."
Henan QiangNian (Wei Xian He Sheng) Product Hotline: 13903781186, Mr. Liu
