Defect Assessment
A grading procedure for fabric quality evaluates deviations from the nominal specification by assigning demerit points based on the size and frequency of flaws encountered during linear inspection. The four point inspection system provides a quantitative framework for auditing rolls of textile goods at the warehouse level before the cutting phase begins. Inspectors pass finished fabric over a lighted table at a controlled speed to identify irregularities like slubs, holes, or dye spots.
Each flaw earns a numeric penalty depending on its length or nature, where small marks yield one point and severe damage claims four. Technicians aggregate these demerits across the entire length of the roll to derive a score per hundred square yards. Mills define an acceptable threshold for this metric, often capping the allowed points to ensure that the material meets garment manufacturing standards for yield and aesthetic consistency.
If a shipment exceeds the agreed limit, the factory rejects the entire batch to avoid downstream production losses.
Point Allocation
Numerical weight depends entirely on the spatial dimensions of an observed error within the fabric width. A defect spanning three inches or less counts as one point, while a flaw measuring between three and six inches earns two points. Errors extending from six to nine inches attract three points, and anything exceeding nine inches incurs the maximum penalty of four points.
Holes constitute a different category where size determines the score, yet even a pinhole receives the full four point deduction regardless of its diameter. This rigid scoring approach prevents subjective interpretation of quality issues by operators. Rigid constraints on hole classification prioritize structural integrity above cosmetic consistency.
Operators record these data points on a digital log to track batch trends over several production cycles.
Scoring Mechanism
Mathematical calculations transform total demerit points into a comparable density figure that ignores the raw yardage of the roll. Dividing the total penalty sum by the product of the length in yards and the width in inches, then multiplying that result by thirty-six hundred, produces the points per hundred square yards. Standardization via this specific area calculation allows buyers to compare fabric quality across different roll widths and varying bolt lengths without manual adjustment.
High scores signal inconsistent processing stages like weaving or dyeing that require immediate corrective action at the mill level. Low scores suggest stable output suitable for high yield cutting layouts. Consistent application of this formula ensures that every auditor produces identical data from identical fabric rolls.
Industry Application
Global textile supply chains rely upon these measurements to formalize quality contracts between vendors and manufacturers. Brands establish strict limits on allowable points per hundred square yards to minimize waste during the marker making and cutting processes. Factories verify these claims upon receipt because errors missed during inspection create significant financial liabilities once the fabric reaches the assembly line.
Quality control managers utilize the resulting data to evaluate supplier performance over long periods. Fabric meeting the stipulated threshold enables efficient production schedules.
