Acid Dyeing How It Changes with Construction and Elastane Content
Acid Dyeing 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 Acid Dyeing normally sit around 95-100 degrees with pH control in mainstream production. Note jet dyeing with levelling agents 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 jet dyeing with levelling agents, so retest after any blending change. Record elastane content alongside Acid Dyeing, because blends shift the measured value. A result outside 95-100 degrees with pH control 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 Acid Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with jet dyeing with levelling agents, since both affect the reading.
Typical range
Working values stay around 95-100 degrees with pH control for mainstream activewear. Working figures for Acid Dyeing normally sit around 95-100 degrees with pH control in mainstream production. Note jet dyeing with levelling agents on the tech pack so nobody tests against an older revision.
Development advice
Change one variable at a time, then verify against jet dyeing with levelling agents before moving to the next sample round. Record elastane content alongside Acid Dyeing, because blends shift the measured value. A result outside 95-100 degrees with pH control usually points to process drift rather than to the fibre itself.
