Reflective Print How It Changes with Construction and Elastane Content
Reflective Print 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 Reflective Print normally sit around above 100 cd/lx/m2 retroreflection in mainstream production. Note EN ISO 20471 retroreflection 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 EN ISO 20471 retroreflection, so retest after any blending change. Record elastane content alongside Reflective Print, because blends shift the measured value. A result outside above 100 cd/lx/m2 retroreflection 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 Reflective Print lets suppliers quote without extra sampling rounds. Ask for conditioning details together with EN ISO 20471 retroreflection, since both affect the reading.
Typical range
Working values stay around above 100 cd/lx/m2 retroreflection for mainstream activewear. Working figures for Reflective Print normally sit around above 100 cd/lx/m2 retroreflection in mainstream production. Note EN ISO 20471 retroreflection on the tech pack so nobody tests against an older revision.
Development advice
Change one variable at a time, then verify against EN ISO 20471 retroreflection before moving to the next sample round. Record elastane content alongside Reflective Print, because blends shift the measured value. A result outside above 100 cd/lx/m2 retroreflection usually points to process drift rather than to the fibre itself.
