Double Knit How It Changes with Construction and Elastane Content
Double Knit 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 Double Knit normally sit around 200-340 GSM in mainstream production. Note double jersey machine 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 double jersey machine, so retest after any blending change. Record elastane content alongside Double Knit, because blends shift the measured value. A result outside 200-340 GSM 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 Double Knit lets suppliers quote without extra sampling rounds. Ask for conditioning details together with double jersey machine, since both affect the reading.
Typical range
Working values stay around 200-340 GSM for mainstream activewear. Working figures for Double Knit normally sit around 200-340 GSM in mainstream production. Note double jersey machine on the tech pack so nobody tests against an older revision.
Development advice
Change one variable at a time, then verify against double jersey machine before moving to the next sample round. Record elastane content alongside Double Knit, because blends shift the measured value. A result outside 200-340 GSM usually points to process drift rather than to the fibre itself.
