Optimizing Wet Spinning Trough Parameters Based on Flax Lignin Metrics
Optimizing wet spinning trough temperature and bath chemistry based on flax lignin metrics stabilizes drafting forces, drops end breaks, and cuts yarn cost.
Zweigle S3 Hairiness
Fibre Protrusion
Quantitative measurement of yarn hairiness using a specialized optical sensor records the number of protruding fibres that exceed a length of three millimetres. Spinning mills use the zweigle s3 hairiness metric to evaluate the surface quality of flax yarn before it is sent to the weaving shed. High numbers of long protruding fibres cause the yarn to cling together during weaving, which leads to high tension and frequent breakages.
Measuring this value is a standard quality control step for export grade linen yarn.
Loom Efficiency
Excessive hairiness reduces the speed of automated looms and causes defects such as warp yarn cling. Spinners can lower the zweigle s3 hairiness score by adjusting the traveler weight or the spindle speed on the ring spinning frame. Applying a protective starch sizing during the warping preparation stage also helps to lay the protruding fibres flat against the yarn body.
This sizing treatment is necessary for high speed shuttleless weaving.
Fabric Quality
Finished linen fabric looks smoother and resists pilling when made from low hairiness yarn. Fabric buyers often specify maximum acceptable levels for this metric in their purchase orders to ensure that the finished garments do not become fuzzy or scrubby after washing. Consistent yarn quality protects the mill from complaints and reduces the rate of fabric rejection during final inspections.