Determining Tenacity and Elongation Limits for Fine Wet Spun Linen Warp Yarns
Fine wet spun linen warp yarns demand a minimum unsized tenacity of 19 cN/tex and a Weibull modulus above 9.0 to survive loom shedding strain without snap.
Greige Defects
Structural Flaw
Unfinished woven fabric irregularities stem from yarn imperfections, loom mechanical faults or tension imbalances prior to chemical bleaching and dyeing. Inspection teams classify greige defects on illuminated viewing tables to record flaw frequency per hundred meters of loom-state linen. Typical flaws include broken ends, thick places, reed marks and oil stains incurred during weaving.
Quality grading maps defect positions to determine fabric suitable for premier finishing runs.
Weaving Origin
Loom stoppages, mispicks and uneven warp tension generate visible flaws that persist through chemical finishing processes. Thick slubs originating in wet spinning cause shuttle or rapier insertion errors, leaving localized filling bands across the cloth width. Accumulations of greige defects reduce fabric cutting yield and restrict finishing options, forcing cloth re-routing to lower-grade print applications or dark dye shades.
Mill quality control logs track flaw occurrence against specific loom numbers and weaver shifts to isolate mechanical or operational causes. Immediate loom adjustment prevents continuous flaw generation across subsequent warp rolls.
Quality Allowance
Standard commercial contracts grant point deductions for identified cloth flaws based on size and severity. Delivery lots exceeding maximum allowable defect points per hundred square meters trigger price discounts or lot return rights. Final fabric invoices adjust dynamically according to recorded inspection scores.