Preshrinking How to Read It on a Lab Report
Laboratory reports present Preshrinking in a compact format. Knowing what each line means prevents misreading.
Definition reminder
relaxing fabric before cutting. 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.
Common report layout
The report states method AATCC 135 verification, sample description, conditioning, and the measured result. 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.
Typical result
Values near below 3% residual shrink usually indicate a conforming lot, assuming the fabric matches the sample submitted. 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.
Red flags
Missing revision numbers, unusual conditioning, and results without units all signal unreliable data. 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.
Questions to ask
Ask the laboratory for the standard revision and sample description before accepting or rejecting a result. 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.
