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