Tensile Strength Why Shipments Get Rejected Over This
Many disputes come down to Tensile Strength. Below is what inspectors check and why shipments fail.
The core definition
maximum force before breaking. Working figures for Tensile Strength normally sit around above 150 N for most knits in mainstream production. Note ISO 13934-1 strip test on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside above 150 N for most knits because the target was never written into the order. Record elastane content alongside Tensile Strength, because blends shift the measured value. A result outside above 150 N for most knits usually points to process drift rather than to the fibre itself.
How it is checked
Inspection and laboratory work both refer to ISO 13934-1 strip test. Keeping reference values for Tensile Strength lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 13934-1 strip test, since both affect the reading.
Related faults
it protects seams and strap areas, so related complaints often point back to this single parameter. Working figures for Tensile Strength normally sit around above 150 N for most knits in mainstream production. Note ISO 13934-1 strip test 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 Tensile Strength, because blends shift the measured value. A result outside above 150 N for most knits usually points to process drift rather than to the fibre itself.
