Abrasion Protocol
Standardized friction testing against ISO 105-X12 evaluates dyed fabric under dry rubbing conditions and wet rubbing conditions to measure color transfer onto white cotton test cloths. Commercial transactions rely on this numerical rating to confirm that dyed garments resist mechanical color bleeding during everyday wear. The procedure applies specifically to printed textiles and dyed piece goods across woven constructions and knitted constructions.
Bulk production lots fail inspection when rubbed surfaces shed excess dye onto friction fingers beyond acceptable numerical grey scale thresholds.
Transfer Mechanics
Mechanical pressure forces sliding motion across a prescribed path length while clamping a standardized cotton peg against the fabric face. Applied downward force remains constant throughout each reciprocating stroke to simulate friction generated by regular body movement against adjacent garments. Moisture content in the wet testing variation dictates how deeply liquid penetrates dye molecules within cellulose fibers or synthetic filaments.
Water saturation levels on the friction cloth require strict control before testing begins because excessive dampness artificially elevates pigment migration.
Scale Evaluation
Numerical grading utilizes standard grey scales ranging from grade one representing severe staining up to grade five indicating zero color transfer. Inspectors compare soiled cotton test cloths against pristine white reference swatches inside specialized light booths operating under controlled artificial daylight. Fractional ratings appear in laboratory reports whenever intermediate color transfer falls between established numerical boundaries.
Buyers specify minimum grade thresholds within purchase contracts to reject substandard shipments before apparel reaches retail distribution centers.
Fastness Boundary
Post-dyeing finishing treatments alter final scores significantly when residual surface surfactants remain trapped inside yarns following industrial washing cycles. Thermoset resin applications often lock loose dye particles into place and temporarily boost numerical ratings prior to consumer laundering. Subsequent dry cleaning or household washing removes these temporary surface treatments and exposes underlying color stability deficiencies.
Testing protocols therefore mandate evaluation on production-ready material rather than experimental strike-offs to reflect true commercial performance.
