Apparel Production and Quality Control
This domain covers apparel production systems, cutting and sewing workflows, inspection and quality standards. The exam tests whether you can identify production stages, apply defect classification and explain what quality control does at each stage.
Core concepts
- Production systems include progressive bundle, make-through and modular/team systems. Each trades work-in-progress against flexibility and throughput.
- Cutting includes marker making, spreading, cutting and bundling. Fabric shrinkage, grain and pattern matching must be checked before cutting.
- Sewing involves stitch type, seam type, machine choice and operator skill. Finishing includes pressing, trimming, labelling and packing.
- Quality control is performed at fabric inspection, cut-panel inspection, in-line sewing checks, end-line inspection and final audit.
- AQL sampling accepts a defined risk of defective units; it does not mean zero defects.
- The 4-point fabric inspection system assigns points by defect length: up to 3 inches = 1 point; over 3 to 6 inches = 2; over 6 to 9 inches = 3; over 9 inches = 4.
Worked example
A roll of 120 square yards has 12 defects, each 4 inches long. Each 4-inch defect earns 2 points, so total points = 12 × 2 = 24. Points per 100 square yards = 24 × (100 ÷ 120) = 20 points per 100 yd². If the buyer’s limit is 20 points per 100 yd², the roll is at the limit and needs the buyer’s rule applied. Reasoning: the 4-point system is based on points per area, not simply defects per roll.
Traps that cost marks
Do not treat AQL as permission to ship known defects. Do not calculate 4-point results per roll without normalising to area. Do not inspect only after packing. Do not ignore measurement tolerances, shade bands and needle detection. Confusing cut-panel defects with fabric defects loses marks.
Key idea
Quality is built through inspection and process control at every stage, not corrected only at final inspection.