Warp Tension
Alignment of the warp yarns to a uniform horizontal plane when the loom is at rest prevents uneven tension distribution across the fabric width. Executing shed line leveling ensures that all warp ends are subjected to equal stress during the cycle. This adjustment is performed during style changes or when resuming work after a loom stoppage.
Correct alignment reduces yarn abrasion against the reed and prevents the formation of warp streaks in the finished linen fabric.
Mechanical Regulation
Electronic controls on modern looms automate the position of the harness frames to establish a uniform line across all warp yarns. The process of shed line leveling is especially important for linen yarns because of their low elasticity and high sensitivity to uneven stress. If the warp ends are not aligned properly, some yarns will experience excessive tension when the shed opens, which leads to frequent yarn breaks and loom downtime.
The tension is monitored by sensors on the whip roll, which feedback data to the control unit of the loom. Adjustments are made to the height of the harness frames and the warp beam brake to balance the load across the entire warp sheet.
Fabric Quality
Inspection of the finished fabric reveals that uniform warp tension eliminates waves and structural irregularities in the cloth. Correct leveling of the shed line stabilizes the fell line, which ensures a consistent pick density throughout the manufacturing process. This mechanical precision supports the production of high-grade export fabrics.
