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