Fibre Stress
Mechanical resistance defines the threshold at which a single flax filament breaks under longitudinal tension before the onset of permanent plastic deformation. Linear tenacity acts as the specific metric for this physical limit during the primary spinning stage. Lab technicians calculate the value by dividing the force applied to the flax strand by the linear density of the raw fibre.
This measurement ceases to apply once the fibre enters the chemical finishing processes, where moisture absorption and enzymatic treatments alter the inherent structure.
Tensile Grade
Standardized testing protocols in high-capacity spinning mills record these results on the individual batch quality report. Auditors compare the measured resistance against the contractual specifications provided by the weaving house to confirm suitability for warp production. Spinning units rely on consistent ratings to avoid breakage during high-speed winding operations, as low ratings indicate brittle fibre prone to fraying.
The mill maintains a internal baseline for yarn integrity while the buyer identifies different acceptance criteria based on the desired strength of the final linen cloth.
Production Outcome
Excessive pressure during the drafting phase often triggers structural failure when the linear tenacity falls below the minimum threshold required for continuous throughput. Machine settings compensate for variability by adjusting the spindle speeds to reduce strain on the roving. Consistent results ensure the uniform density of the yarn, which directly influences the structural integrity of the finished fabric.
Higher ratings at the spinning frame enable longer, uninterrupted machine run times without the need for frequent knotting or manual intervention. Final product durability relies on the integrity of the base fibres recorded before the loom begins operation.
