Interlock Why Shipments Get Rejected Over This
Many disputes come down to Interlock. Below is what inspectors check and why shipments fail.
The core definition
two single jersey fabrics knitted back to back. Working figures for Interlock normally sit around 200-280 GSM in mainstream production. Note interlock machine on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside 200-280 GSM because the target was never written into the order. Record elastane content alongside Interlock, because blends shift the measured value. A result outside 200-280 GSM usually points to process drift rather than to the fibre itself.
How it is checked
Inspection and laboratory work both refer to interlock machine. Keeping reference values for Interlock lets suppliers quote without extra sampling rounds. Ask for conditioning details together with interlock machine, since both affect the reading.
Related faults
it is thicker, stable and popular for squat-proof fabric, so related complaints often point back to this single parameter. Working figures for Interlock normally sit around 200-280 GSM in mainstream production. Note interlock machine 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 Interlock, because blends shift the measured value. A result outside 200-280 GSM usually points to process drift rather than to the fibre itself.
