Pilling Resistance Why Shipments Get Rejected Over This
Many disputes come down to Pilling Resistance. Below is what inspectors check and why shipments fail.
The core definition
resistance to surface fibre balls. Working figures for Pilling Resistance normally sit around grade 4 after 7000 revolutions in mainstream production. Note ISO 12945-2 pilling box on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside grade 4 after 7000 revolutions because the target was never written into the order. Record elastane content alongside Pilling Resistance, because blends shift the measured value. A result outside grade 4 after 7000 revolutions usually points to process drift rather than to the fibre itself.

How it is checked
Inspection and laboratory work both refer to ISO 12945-2 pilling box. Keeping reference values for Pilling Resistance lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 12945-2 pilling box, since both affect the reading.
Related faults
it decides how quickly a garment looks worn, so related complaints often point back to this single parameter. Working figures for Pilling Resistance normally sit around grade 4 after 7000 revolutions in mainstream production. Note ISO 12945-2 pilling box on the tech pack so nobody tests against an older revision.
Avoiding rejection
Agree targets, tolerances and the method before production, then test per lot rather than per shipment. Record elastane content alongside Pilling Resistance, because blends shift the measured value. A result outside grade 4 after 7000 revolutions usually points to process drift rather than to the fibre itself.