Standardized Visual Defect Classification Methods for Greige Cloth Inspection
Standardized greige inspection combines calibrated D65 illumination and 4-point scoring to convert visual cloth defects into precise commercial deductions.
Acceptance Thresholds
Fibre Variance
Flax spinning mills establish internal acceptance thresholds during the initial hackling stage to govern line fibre tenacity and line length distributions before wet spinning frames draw roving into continuous yarn. Raw material parcels arriving from regional retting operations exhibit biological irregularities originating from soil chemistry variations and dew retting exposure durations. Technicians measure breaking tenacity in grams per tex and count residual shives embedded within the hackled ribbon to determine whether a batch meets processing parameters.
Fibre batches failing these mill standards are diverted to coarser carded yarn production lines or rejected prior to financial settlement.
Fabric Tolerance
Loom sheds apply rigid acceptance thresholds to greige linen cloth immediately after air jet weaving operations finish their production runs. Inspectors examine warp and weft densities by counting ends and picks per centimetre across standardized testing squares under calibrated lighting hoods. A fabric grade is established by recording warp breakage frequencies and surface defects such as broken filaments or oil stains within a predetermined running length.
Buyer purchase orders routinely demand stricter limits for tensile strength and dimensional stability than the manufacturing mill applies for internal quality control.
Export Specification
Finishing plants administer final acceptance thresholds on bleached and dyed linen piece goods prior to packaging and release for international distribution. Laboratory technicians test dimensional change after laundering, tear resistance via Elmendorf apparatus, and colour fastness against standardized rubbing scales. Commercial invoices and shipping dockets reference these measured outcomes to satisfy contractual obligations established between exporters and garment manufacturers.
Final compliance verification certifies that finished textiles meet international performance standards without requiring destination market reinspection.