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