Water Vapour Transmission (MVTR) What Improves It and What Damages It
Practical actions that raise or lower Water Vapour Transmission (MVTR) during knitting, dyeing, finishing and garment care.
Actions that help
Correct construction choice and controlled setting improve performance, and they also keep the fabric near higher means more breathable. Working figures for Water Vapour Transmission (MVTR) normally sit around higher means more breathable in mainstream production. Note ISO 15496 breathability on the tech pack so nobody tests against an older revision.
Actions that damage it
Excess heat, over-aggressive softener and missing washing-off steps all reduce results. Record elastane content alongside Water Vapour Transmission (MVTR), because blends shift the measured value. A result outside higher means more breathable usually points to process drift rather than to the fibre itself.
Finishing influence
ISO 15496 breathability results shift noticeably after finishing, so retest after the final process rather than before. Keeping reference values for Water Vapour Transmission (MVTR) lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 15496 breathability, since both affect the reading.
Garment care influence
Home washing temperature and drying method change performance over the first ten cycles. Working figures for Water Vapour Transmission (MVTR) normally sit around higher means more breathable in mainstream production. Note ISO 15496 breathability on the tech pack so nobody tests against an older revision.
Summary
Keep process settings documented so repeat orders land inside the agreed range every time. Record elastane content alongside Water Vapour Transmission (MVTR), because blends shift the measured value. A result outside higher means more breathable usually points to process drift rather than to the fibre itself.
