Yarn Classification
Metric yarn count designations for flax fibers indicate the number of thousands of meters of yarn per kilogram of weight. A batch of Nm 39 line yarn represents a medium-fine yarn spun from long flax fibers, offering a balance of strength and surface regularity. Spinneries in Jiangsu province produce this yarn for high-density home textiles and document its physical characteristics in the mill’s daily quality log.
Spinning Stage
Wet spinning processes are used to draw the long line fiber bundles through hot water before twisting them on the spinning frame. Heating the fibers softens the remaining pectin, which allows the individual fibers to slide past each other and form a highly aligned, smooth yarn structure. During this stage, the spinning mill monitors the draft ratio and the spindle speed to maintain the target metric count.
The daily production docket records the package weight, the moisture regain and the tensile strength of the spun thread.
Weaving Standard
Fabric manufacturers require high tensile strength in the warp yarn to withstand the rapid movements of modern rapier looms. This yarn count is ideal for making durable, high-quality linen fabrics used in apparel and bedding. The buyer’s acceptance sheet specifies the maximum number of allowable thick and thin places per kilometer of yarn.
