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