Calibrating Flax Fibre Intake Standards for Dry Spinning
Dry spinning flax intake standards require strict bundle fineness under 2.2 tex, residual shive below 0.8 percent, and 11 percent target moisture regain.
Stelometer Strength
Fibre Breakage
Mechanical resistance dictates how raw flax fibres withstand the high-tension forces applied during mechanical decortication and subsequent drafting on ring-spinning frames in Shandong spinning mills. Stelometer strength measures the specific breaking load of a flat bundle of plant cellulose clamped between jaws at a fixed gauge length. Breaking tenacity is recorded in millinewtons per tex on the inspection certificate accompanying each exported yarn lot.
Excessive drafting tension ruptures cellulose chains prematurely when breaking loads fall below the tolerance threshold established in the mill operating manual.
Bundle Integrity
Clamping pressure affects force distribution across parallel plant filaments during the zero-gauge test procedure executed in the testing laboratory. Jaw slippage alters the apparent breaking load by introducing shear stress alongside direct tensile strain within the test specimen. Standard conditioning chambers maintain relative humidity at strict thresholds because ambient moisture content softens hemicellulose matrices and skews the ultimate tenacity reading.
Operators apply uniform torque to the clamp screws before releasing the pendulum mechanism that tears the cellulose bundle.
Export Threshold
Buyer acceptance criteria for high-grade linen yarn rely on these tenacity values to predict tear resistance in industrial weaving operations. Fabric durability depends directly upon the structural integrity retained by the spun yarn during high-speed shuttle insertion on air-jet looms. Lower tenacity ratings relegate the material to coarse utility fabrics rather than fine damask production.
Contractual penalties apply whenever delivered yarn fails to meet the minimum breaking tenacity specified in the international purchase agreement.