Four Point Inspection Procedures for Woven Linen Greige Cloth Quality Control
Standardized four-point greige inspection prevents downstream finishing losses by enforcing objective ASTM D5430 defect scoring before cloth conversion.
Point Allocation Matrix
Scoring Standard
Standardized defect valuation grids assign numeric penalty values to fabric imperfections based on linear dimensions or visual severity. Quality auditors apply a point allocation matrix during grey cloth and finished fabric inspections to calculate roll quality scores objectively. The resulting cumulative score per hundred square meters determines whether a roll meets commercial acceptance standards.
Evaluation Mechanics
Inspection systems typically assign one point to minor defects under three inches, two points to flaws between three and six inches, three points for six to nine inches, and four points for larger defects. A point allocation matrix prevents any single linear meter from accruing more than four points regardless of defect density within that localized area. Inspectors identify defects while fabric passes over back-lit viewing tables, entering point values directly into digital logging devices.
Continuous flaws such as warp streaks receive maximum penalty points for every meter they persist across the roll length.
Threshold Management
Export contract specifications establish the maximum allowable total penalty points per hundred square yards or square meters for first-quality linen fabric. When the calculated point total exceeds the agreed contractual limit, the entire roll undergoes re-inspection or reclassification as second-quality material. Fabric buyers utilize these quantitative metrics to evaluate mill production consistency and enforce commercial price adjustments.
Detailed point reports accompany official shipping manifests, providing traceable evidence of fabric quality for international trade clearance.