Warp Tension Peaks

Stress Dynamics

Linen warp yarns undergo mechanical strain because unretted or stiff flax fibres lack dynamic elongation properties under tension. During the beat-up stroke, the reed forces filling yarn into place, generating sudden tension spikes across the warp sheet. If peak force values exceed the elastic limit of the flax yarn, individual filaments break, causing loom stop motions and warp end repair delays.

Electronic tension sensors mounted on back rest rollers monitor continuous tension profiles across shed cycles. Weaving technicians adjust back rest roller height, whip roll dampening mechanisms and shed opening angles to smooth out tension spikes, protecting low-elasticity flax yarns from tension-induced end breaks.

Tension Boundary

Loom control systems adjust let-off drives dynamically to prevent tension spikes from exceeding yarn breaking strength limits. Excessive peak loads during weaving cause fabric width variation and end breakage.