Single Jersey How It Changes with Construction and Elastane Content
Single Jersey 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 Single Jersey normally sit around 140-220 GSM in mainstream production. Note circular single-bed 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 circular single-bed machine, so retest after any blending change. Record elastane content alongside Single Jersey, because blends shift the measured value. A result outside 140-220 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 Single Jersey lets suppliers quote without extra sampling rounds. Ask for conditioning details together with circular single-bed machine, since both affect the reading.
Typical range
Working values stay around 140-220 GSM for mainstream activewear. Working figures for Single Jersey normally sit around 140-220 GSM in mainstream production. Note circular single-bed machine on the tech pack so nobody tests against an older revision.
Development advice
Change one variable at a time, then verify against circular single-bed machine before moving to the next sample round. Record elastane content alongside Single Jersey, because blends shift the measured value. A result outside 140-220 GSM usually points to process drift rather than to the fibre itself.
