Preshrinking What Improves It and What Damages It
Practical actions that raise or lower Preshrinking 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 below 3% residual shrink. Working figures for Preshrinking normally sit around below 3% residual shrink in mainstream production. Note AATCC 135 verification 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 Preshrinking, because blends shift the measured value. A result outside below 3% residual shrink usually points to process drift rather than to the fibre itself.
Finishing influence
AATCC 135 verification results shift noticeably after finishing, so retest after the final process rather than before. Keeping reference values for Preshrinking lets suppliers quote without extra sampling rounds. Ask for conditioning details together with AATCC 135 verification, since both affect the reading.
Garment care influence
Home washing temperature and drying method change performance over the first ten cycles. Working figures for Preshrinking normally sit around below 3% residual shrink in mainstream production. Note AATCC 135 verification 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 Preshrinking, because blends shift the measured value. A result outside below 3% residual shrink usually points to process drift rather than to the fibre itself.
