Durable Water Repellent (DWR) What Improves It and What Damages It
Practical actions that raise or lower Durable Water Repellent (DWR) 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 after 20 washes still grade 3+. Working figures for Durable Water Repellent (DWR) normally sit around after 20 washes still grade 3+ in mainstream production. Note AATCC 22 after ISO 6330 washing 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 Durable Water Repellent (DWR), because blends shift the measured value. A result outside after 20 washes still grade 3+ usually points to process drift rather than to the fibre itself.
Finishing influence
AATCC 22 after ISO 6330 washing results shift noticeably after finishing, so retest after the final process rather than before. Keeping reference values for Durable Water Repellent (DWR) lets suppliers quote without extra sampling rounds. Ask for conditioning details together with AATCC 22 after ISO 6330 washing, since both affect the reading.
Garment care influence
Home washing temperature and drying method change performance over the first ten cycles. Working figures for Durable Water Repellent (DWR) normally sit around after 20 washes still grade 3+ in mainstream production. Note AATCC 22 after ISO 6330 washing 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 Durable Water Repellent (DWR), because blends shift the measured value. A result outside after 20 washes still grade 3+ usually points to process drift rather than to the fibre itself.
