Shade Variation
Color variation occurring between the center and the edges of a fabric roll, typically resulting from uneven dyeing or finishing. This fault creates a visible shade difference that makes the fabric unsuitable for side-by-side garment panel assembly. It often stems from temperature gradients across the width of a machine or improper liquor circulation in a dye beck.
A listing defect is a frequent cause of quality rejections in large-scale textile production.
Mechanical Causes
Uneven pressure across the padding rollers or blocked spray nozzles in a finishing range can lead to this inconsistency. In some cases, the edges of the fabric dry faster than the middle, causing dye migration toward the selvages. Maintaining balanced airflow and uniform heat is necessary to prevent these shade bands.
Inspection Grading
Quality controllers identify the problem during the final inspection by comparing swatches taken from different points across the width. If the shade difference is detectable by the naked eye under standard light sources, the roll is downgraded or rejected. This listing defect is particularly problematic in wide-width fabrics used for bedding or curtains.
Remediation Options
Re-dyeing the entire lot is sometimes possible, but it risks damaging the fiber or altering the hand-feel.
