Bursting Strength Why Shipments Get Rejected Over This
Many disputes come down to Bursting Strength. Below is what inspectors check and why shipments fail.
The core definition
resistance to a perpendicular load. Working figures for Bursting Strength normally sit around above 300 kPa for stretch knits in mainstream production. Note ISO 13938-1 hydraulic method on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside above 300 kPa for stretch knits because the target was never written into the order. Record elastane content alongside Bursting Strength, because blends shift the measured value. A result outside above 300 kPa for stretch knits usually points to process drift rather than to the fibre itself.
How it is checked
Inspection and laboratory work both refer to ISO 13938-1 hydraulic method. Keeping reference values for Bursting Strength lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 13938-1 hydraulic method, since both affect the reading.
Related faults
it reflects real strain better than tensile for knits, so related complaints often point back to this single parameter. Working figures for Bursting Strength normally sit around above 300 kPa for stretch knits in mainstream production. Note ISO 13938-1 hydraulic method 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 Bursting Strength, because blends shift the measured value. A result outside above 300 kPa for stretch knits usually points to process drift rather than to the fibre itself.
