Natural and Synthetic Fibres and What Each Does in a Fabric
Fibre composition dictates physical durability, moisture regain, dye chemistry, and customs classification before spinning machinery turns.
Comb Waste Factor
Fibre Separation
Spinning operations designed to produce combed yarn require the removal of a specific portion of short fibers and trash. The comb waste factor represents the weight percentage of these extracted fibers, known as noils, relative to the weight of the raw lap fed into the comber. This measurement enables spinning mills to calculate the efficiency of fiber purification before spinning starts.
Mill managers use the calculation to assess the economic feasibility of upgrading raw cotton grades.
Quality Metric
Yarn strength and uniformity depend directly on the average length of the remaining fibers after combing. A higher comb waste factor indicates that more short fibers have been extracted, which generally leads to a finer yarn with fewer imperfections. Spinning mills monitor this value to maintain consistency across different raw cotton shipments.
Mill Yield
Raw material consumption is calculated using the proportion of waste generated during processing. The comb waste factor directly determines the volume of noils sold at lower prices to secondary industries. High percentages increase the raw material cost per kilogram of finished yarn, forcing mills to balance yarn quality against production profitability.
Machine Adjustment
Mechanical settings on the comber dictate the separation threshold for shorter fibers. To modify the comb waste factor, technicians adjust the step gauge and the timing of the detaching rollers. In textile laboratories, operators verify the result by weighing the combed sliver and the collected waste over a fixed operating duration.