Standard Operating Inspection Protocol for Four Point Greige Scoring
ASTM D5430 four-point scoring normalises greige defects per 100 square yards, capping penalties at four points per yard to decide lot acceptance.
Continuous Defects
Persistent Irregularity
Recurring flaws that span a significant length of the fabric roll indicate a systematic failure in the production line. These continuous defects often appear as missing warp threads or thick bars in the weft that repeat without interruption. They differ from isolated snags or knots because they suggest a machine component is broken or misaligned.
Mechanical Origin
Persistent issues frequently stem from a damaged reed or a malfunctioning let-off motion that fails to regulate tension. If a single needle on a knitting machine or a specific dent in a loom reed is burred, it will produce continuous defects until the part is replaced. In the context of high speed Chinese weaving mills, these faults can ruin hundreds of meters of cloth in a single shift.
Operators monitor the cloth surface constantly to catch these errors early. Daily logs track the incidence of these flaws to identify machines that require overhauling.
Grading Impact
Inspection standards usually categorize these faults as major because they cannot be cut out without destroying the utility of the roll. Most buyer acceptance criteria allow for a few point defects but trigger a total rejection for continuous defects that exceed a specific length. Accurate documentation in the final inspection report prevents sub-standard material from reaching the export stage.