Bleaching Why Shipments Get Rejected Over This
Many disputes come down to Bleaching. Below is what inspectors check and why shipments fail.
The core definition
removing natural colour before dyeing. Working figures for Bleaching normally sit around hydrogen peroxide route in mainstream production. Note controlled pH and temperature on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside hydrogen peroxide route because the target was never written into the order. Record elastane content alongside Bleaching, because blends shift the measured value. A result outside hydrogen peroxide route usually points to process drift rather than to the fibre itself.
How it is checked
Inspection and laboratory work both refer to controlled pH and temperature. Keeping reference values for Bleaching lets suppliers quote without extra sampling rounds. Ask for conditioning details together with controlled pH and temperature, since both affect the reading.
Related faults
it prepares fabric for light shades, so related complaints often point back to this single parameter. Working figures for Bleaching normally sit around hydrogen peroxide route in mainstream production. Note controlled pH and temperature 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 Bleaching, because blends shift the measured value. A result outside hydrogen peroxide route usually points to process drift rather than to the fibre itself.
