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.
Points per Hundred Square Meters
Fabric Density
Numerical counts of visible surface defects or knots per unit area define the specific quality threshold allowed in finished rolls of linen textile destined for high-end upholstery. Points per hundred square meters governs the final sorting process within the finishing plant where inspectors evaluate long sheets of cloth under standardized illumination. Any surface inconsistency found during the slow passage of the roll over an inspection table adds a weighted value to the total tally for that batch.
Producers reject rolls exceeding the contractual limit before export occurs because rework remains physically impossible for finished goods. The measurement operates independently of fibre grade, focusing entirely on the visual consistency required by international buyers for furniture production.
Inspection Protocol
Qualified quality managers verify these counts through a manual scan that marks each blemish with a removable adhesive tab. Technicians calculate the final figure by dividing the total number of recorded points by the area of the roll multiplied by one hundred. Workers perform this task after the final calendering stage but before the bolts reach the shipping warehouse.
Records from the inspection station enter the digital tracking system to establish a batch score. A score below the limit marks the linen as export ready while a high count triggers a secondary review by the mill foreman. This mechanism prevents batches containing excessive slubs or uneven tension from entering the supply chain where they would fail downstream performance tests.
Quality Benchmark
Commercial linen agreements establish fixed limits for this metric to ensure consistency across shipments from different production runs. Buyers demand these figures to mitigate risks during the manufacturing of premium furniture items where a single visible knot ruins a whole panel. The threshold remains rigid because the cost of shipping defective material outweighs the margin gained from lowering the standard.
Disagreements arise when the ambient light levels in the mill differ from the levels maintained at the destination warehouse. Sellers prefer to count only structural irregularities while purchasers include minor textural variations that change the tactile profile of the fabric. The final numeric output defines the economic utility of the raw output.
Greige Fabric Defect Inspection Standards across Sectional Warping Batch Runs
Sectional warping batch inspection requires matching drum cone angles to yarn build and scoring periodic band faults under strict four point penalty thresholds.