Standard Setup Rules for Four Point Greige Perches
Standard four-point greige perches require a 45-60 degree tilt, 1200+ lux D65 lighting, synchronized tension drive, and strict ASTM D5430 demerit point scoring.
Continuous Defect Rule
Quality Standard
A standardized grading protocol dictates how inspectors measure and penalize repeating fabric blemishes during the final quality check of linen rolls. Under the continuous defect rule, any fault that runs uninterrupted for a specified length is treated as a major systemic error. This rule prevents heavily compromised fabric from reaching the cutting table.
Inspection Methodology
Mill inspectors use a motorized viewing board to scan the moving fabric for warp runs, thick weft bands or tension streaks. They apply the continuous defect rule when these faults persist across a substantial portion of the roll. The findings are compiled in the fabric inspection report, which assigns penalty points according to the length of the run.
This documentation determines whether the roll qualifies as first-quality fabric.
Production Penalty
A roll that fails to meet the buyer’s acceptance criteria due to recurring streaks is classified as second-quality material. When the continuous defect rule is triggered, the mill must either apply a financial discount to the shipment or replace the entire roll at its own expense. This penalty structure encourages weaving mills to maintain their loom tension and inspect yarn regularly.
By tracking these systemic faults, the mill can identify failing parts on the loom before massive scrap runs occur. The final yarn and weave quality remains consistent across successive production batches.