Mechanical Resistance
Resistance of a thread to longitudinal stress without breaking provides the primary measure of its suitability for high-speed weaving. Yarn tensile strength is tested by applying a gradual pull to a sample until failure occurs. This property depends on the individual strength of the flax fibers and the degree of twist applied during the spinning process.
A high value is necessary to endure the cyclic loading of the loom’s shed-opening mechanism.
Production Influence
Performance of the weaving department is directly linked to the durability of the supplied warp beams. When yarn tensile strength is below the required threshold, the frequency of machine stoppages increases, leading to lower efficiency and more fabric defects. Flax yarns generally possess high strength but low elasticity, making them sensitive to sudden tension spikes.
Modern mills use automated testers to generate a stress-strain curve for every lot of yarn produced. This data allows the weaver to adjust the loom settings to accommodate the specific physical limits of the material. Consistent strength is the primary factor in the production of wide-width industrial linen.
Quality Grade
Laboratory reports specify the breaking force in centinewtons and the elongation at break to certify the yarn for export.
