Resolving Edge Tension Drift and Temple Mark Variations on Wide Air-Jet Linen Weaving Warps
Wide air-jet linen weaving requires synchronized relay nozzle pressures and precise temple pin geometry to stop edge tension drift and edge damage.
Electronic Take-up ETU
Speed Control
Precision servo mechanisms regulate the step rate of cloth rolls on modern looms to set exact pick spacing during fabric formation. The electronic take-up etu coordinates directly with the main shaft encoder to advance woven cloth by exact increments for every pick inserted. In flax weaving, where yarn thickness varies along the strand length, continuous mechanical adjustments prevent bands of uneven density.
It replaces gear trains.
Density Regulation
Programmable pick densities allow mills to alter weave tightness across different production batches without stopping the loom to change physical gears. Flax yarns require specific tension adjustments during take-up because wet-spun and dry-spun linen yarns react differently to draw-off force. When weaving high-density linen fabrics, the electronic take-up etu maintains constant pick counts per centimetre, preventing temple marks and stop marks during loom restarts.
Automated feedback signals from the warp let-off system sync with the take-up drive, holding fabric tension uniform throughout the entire beam run.
Process Limitation
Electronic drive controls operate within defined physical limits dictated by mechanical braking speed and motor torque. If yarn breakage triggers a loom stop, late motor response creates dense pick bars in the cloth. Calibration against standard counting glass measurements verifies that machine settings match physical fabric density.