Roll-to-Roll Consistency Frequently Asked Questions
Short answers to the questions buyers ask most often about Roll-to-Roll Consistency.
What does it mean?
variation between rolls in one lot. 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.
What value should be specified?
Start from same lot should match within tolerance and adjust for the end use of the garment. 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.
How is it tested?
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.
Why does it change between lots?
Process variables such as finishing temperature and elastane batch cause the normal spread of results. 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.
Can results be compared across suppliers?
Only when the same standard revision and conditioning are used; otherwise measurements are not equivalent. 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.
