Rib Knit Test Methods and Acceptable Limits
Rib Knit is verified through rib machine. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
rib machine defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for Rib Knit normally sit around 1x1, 2x2 common in mainstream production. Note rib machine on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; 1x1, 2x2 common is only meaningful for similar fabrics. Record elastane content alongside Rib Knit, because blends shift the measured value. A result outside 1x1, 2x2 common usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write 1x1, 2x2 common with a stated tolerance, then verify against rib machine. Keeping reference values for Rib Knit lets suppliers quote without extra sampling rounds. Ask for conditioning details together with rib machine, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for Rib Knit normally sit around 1x1, 2x2 common in mainstream production. Note rib machine on the tech pack so nobody tests against an older revision.
Documentation
Record the standard revision on every report, because older versions can differ from current practice. Record elastane content alongside Rib Knit, because blends shift the measured value. A result outside 1x1, 2x2 common usually points to process drift rather than to the fibre itself.
