Tear Strength Why Shipments Get Rejected Over This
Many disputes come down to Tear Strength. Below is what inspectors check and why shipments fail.
The core definition
force needed to continue a tear. Working figures for Tear Strength normally sit around above 10 N typical in mainstream production. Note ISO 13937-2 trouser tear on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside above 10 N typical because the target was never written into the order. Record elastane content alongside Tear Strength, because blends shift the measured value. A result outside above 10 N typical usually points to process drift rather than to the fibre itself.

How it is checked
Inspection and laboratory work both refer to ISO 13937-2 trouser tear. Keeping reference values for Tear Strength lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 13937-2 trouser tear, since both affect the reading.
Related faults
it matters mostly for woven shells, so related complaints often point back to this single parameter. Working figures for Tear Strength normally sit around above 10 N typical in mainstream production. Note ISO 13937-2 trouser tear 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 Tear Strength, because blends shift the measured value. A result outside above 10 N typical usually points to process drift rather than to the fibre itself.