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