Fibre Protrusion
Measurement of the number of fibres extending three millimetres or more from the main body of the yarn provides a standard for surface smoothness. The s3 hairiness index identifies the potential for pilling and the risk of yarn entanglement during the weaving process. High values in linen yarns often indicate a need for more intensive sizing or better combing during spinning.
Weaving Performance
Yarns with a high count of long protruding fibres tend to catch on adjacent threads as the loom shed opens and closes. Monitoring the s3 hairiness index helps the mill predict how many machine stops will occur due to clinging warps. Reducing these long hairs through singeing or sizing improves the efficiency of the weaving shed.
Technicians use optoelectronic sensors to count the number of hairs per thousand metres of yarn during the winding process. This data allows the mill to segregate lower-quality batches that might compromise the efficiency of high-speed weaving machines.
Aesthetic Quality
Finished fabric made from low-hairiness yarn has a cleaner and more lustrous appearance that is preferred for high-end linen shirts. The s3 hairiness index serves as a benchmark for comparing the output of different spinning mills. Consistent results ensure that the texture of the fabric remains uniform across different production lots.
