4-Point Inspection System
The 4-point system grades fabric quality by assigning penalty points for defects based on length and severity. It's the textile industry's standard quality method.
The 4-point inspection system is the globally accepted method for grading fabric quality. Developed originally by the American Society for Quality Control and now formalized in ASTM D5430, it assigns penalty points to defects based on defect length.
Scoring: defects up to 3 inches = 1 point; 3-6 inches = 2 points; 6-9 inches = 3 points; over 9 inches = 4 points. Holes regardless of size score 4 points. Maximum 4 points per linear yard. Acceptable thresholds vary by fabric class, typically 15-40 points per 100 square yards.
4-point inspection requires specific data capture: defect location (warp/weft position), defect type (hole, stain, slub, color streak), defect length, and roll/piece identification. Inspectors roll fabric across a lit inspection frame at 10-15 yards per minute.
TextileERP has 4-point inspection as a native quality workflow. Generic ERP systems require 8-12 lakh of custom development to support this textile-specific methodology.
Related terms
Dye Lot
A dye lot is a batch of fabric or yarn dyed together in a single cycle. Each lot has slight shade variations that must be tracked for order consistency.
Fabric Roll
A fabric roll is the standard shipping unit for textile fabric, typically 50-150 meters. Each roll has unique attributes: dye lot, shade, GSM, width.
GSM (Grams per Square Meter)
GSM measures fabric weight per unit area, expressed in grams per square meter. It's the primary metric for classifying fabric density.
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