Roll-to-Roll Consistency How It Changes with Construction and Elastane Content
Roll-to-Roll Consistency does not stay constant when construction changes. Understanding the direction of change helps during development.
Effect of knit structure
Loop length and density move results first, usually before any yarn change is made. 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.
Effect of elastane content
More elastane raises recovery but changes the value measured by shade continuity inspection, so retest after any blending change. 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.
Effect of finishing
Heat setting and softeners shift results, which explains differences between a hand sample and bulk. 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.
Typical range
Working values stay around same lot should match within tolerance for mainstream activewear. 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.
Development advice
Change one variable at a time, then verify against shade continuity inspection before moving to the next sample round. 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.
