Warp Alignment
Deviation from the parallel path of lengthwise elements during the preparatory sizing stage introduces a thread alignment error into flax yarn assemblies. Jiangsu province spinning mills record this angular displacement on the production control sheet before the beams transfer to the loom floor. Commercial contracts separate raw flax fibre grading from finished cambric inspection because mechanical processing introduces geometric flaws that raw scutched material lacks.
Mill standard operating procedures tolerate a maximum angular deviation of two degrees per linear metre before internal rejection occurs, whereas European import houses enforce a zero tolerance threshold for warp distortion in luxury shirting fabric.
Weld Deflection
Heating friction generated by high speed shuttleless insertion causes the reed to bow slightly toward the center of the textile width. Technicians measure this thermal camber using dial indicators mounted directly above the race board during continuous production runs. Operating temperatures exceeding forty degrees Celsius exacerbate the structural deflection of aluminum slay beams, pulling outer ends inward and distorting the pick density across the selvedge.
Cooling water circulation through hollow profile reeds prevents excessive thermal expansion, maintaining the precise perpendicularity required for high density linen weaving.
Skew Variance
Angular asymmetry between warp and filling vectors alters the tear strength and drape characteristics of finished linen bolts. Final inspection auditors quantify this geometric distortion by measuring the diagonal displacement across a one metre square cutting sample. Buyers reject shipments failing to meet the specified squareness limits, forcing converters to reprocess the material through thermal tentering frames.
Tension differentials applied across the drying cylinders either correct or compound the skew angle depending on the moisture content of the wet fabric.
