Antibacterial Finish How It Changes with Construction and Elastane Content
Antibacterial Finish 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 Antibacterial Finish normally sit around 99% reduction target in mainstream production. Note ISO 20743 or AATCC 100 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 ISO 20743 or AATCC 100, so retest after any blending change. Record elastane content alongside Antibacterial Finish, because blends shift the measured value. A result outside 99% reduction target 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 Antibacterial Finish lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 20743 or AATCC 100, since both affect the reading.
Typical range
Working values stay around 99% reduction target for mainstream activewear. Working figures for Antibacterial Finish normally sit around 99% reduction target in mainstream production. Note ISO 20743 or AATCC 100 on the tech pack so nobody tests against an older revision.
Development advice
Change one variable at a time, then verify against ISO 20743 or AATCC 100 before moving to the next sample round. Record elastane content alongside Antibacterial Finish, because blends shift the measured value. A result outside 99% reduction target usually points to process drift rather than to the fibre itself.
