Defect Allocation
Standardized defect evaluation assigns penalty values from one to four points based on the physical length of fabric flaws during visual quality inspection. In international linen trade, the four-point inspection system provides a uniform method for quantifying fabric quality on inspection tables. Inspectors award penalty points to woven defects such as slubs, missing picks, holes and dye streaks according to strict length thresholds.
The system normalizes quality scores across varying roll widths.
Penalty Calculation
Point values accumulate based on discrete flaw measurements taken across the length and width of each woven roll. Flaws up to three inches long receive one point, flaws between three and six inches receive two points, flaws between six and nine inches receive three points, and flaws exceeding nine inches receive four points. Major holes or structural tears receive four points regardless of size.
In Chinese export mills, quality control personnel calculate the total penalty points per hundred square metres or hundred square yards of fabric. A total score exceeding twenty-eight to forty points per hundred square yards usually leads to fabric lot rejection or price negotiation.
Acceptance Limit
Maximum point allowances vary according to buyer specifications and intended fabric end-use. Fine shirtings enforce lower point thresholds than coarse utility fabrics. Inspection reports document point distribution per roll to substantiate conformity with export purchase contracts.
