Single End Tenacity

Fiber Testing

The evaluation involves stretching a pre-conditioned yarn sample on an automated tensile tester until it ruptures, recording the precise force at the point of failure. Flax fibers possess high crystalline structure, giving them great strength but very low elasticity, which means that any variation in thickness can lead to a sudden break under tension. By testing multiple individual strands from a spinning lot, the laboratory establishes a statistical baseline for the yarn’s reliability.

This measurement is crucial for selecting the appropriate sizing recipe and loom speed for each batch of linen yarn.

Production Impact

Low tenacity leads directly to frequent warp breaks, which stop the loom and reduce the weaving efficiency of the mill. When yarn falls below the threshold required for high-speed looms, it must be diverted to slower machines or utilized for less demanding weft applications.