Frictional Resistance
Plant fibre binding resistance is a mechanical property that determines how individual filaments cling to each other during the drawing stages of yarn spinning. A high degree of bast fibre cohesion prevents the roving from separating prematurely, a performance aspect that spinning technicians record on the mill drawing log.
Spinning Performance
Wet spinning processes exploit this natural cling to maintain yarn uniformity as the fibres pass through the hot water basin. In Chinese linen mills, wet spinning requires a controlled level of bast fibre cohesion to ensure that the yarn does not break or bunch up. When the friction is too low, the roving splits and creates thin spots or breaks.
If the cling is too high, the draft zone cannot separate the fibres, which leads to thick slubs in the finished product.
Drafting Uniformity
Drafting equipment depends on consistent resistance to distribute the fibres evenly into a fine thread. An optimal level of bast fibre cohesion guarantees that the draw rolls apply uniform tension across the entire roving. Testing departments use a pull test on the roving strands before they reach the spinning frame to verify that the resistance falls within the buyer’s accepted range.
Consistent results are documented on the laboratory yarn quality certificate.
