Tensile Tolerance
Crushing force applied to raw flax staples yields the exact breaking load recorded on the factory floor during preliminary spinning preparation. Fibre bundle tenacity establishes the mechanical threshold before catastrophic rupture occurs under axial tension. Chinese mills record this specific value on the daily intake sheet accompanying incoming bales from provincial agricultural cooperatives.
Processing lines depend on that initial metric to prevent severe machinery jams during drafting and drawing operations. Raw material classification separates ordinary agricultural output from premium textile stock through this exact breaking point.
Breaking Parameter
Laboratory technicians clamp conditioned specimens into constant rate of extension instruments within the conditioning room. Pulling jaws separate at a predetermined speed until the material snaps completely. Electronic sensors capture the maximum force registered during the extension phase.
Division of that peak force by linear density yields the specific breaking load required for commercial grading. Technicians record mill test results on the official batch inspection certificate prior to yarn spinning.
Commercial Valuation
Export contracts bind suppliers to strict tenacity thresholds established by international trade standards. Buyers reject lots failing to meet minimum breaking criteria because weak strands produce defective yarn during high speed ring spinning. Premium linen fabric demands high breaking thresholds to withstand automated weaving looms without tearing.
Mills apply internal processing margins above buyer specifications to absorb natural variability inherent in agricultural flax harvests. Pricing schedules reflect those physical limits directly on the final commercial invoice.
