Solution Dyeing Test Methods and Acceptable Limits
Solution Dyeing is verified through polymer and spinneret process. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
polymer and spinneret process defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for Solution Dyeing normally sit around highest light and chlorine fastness in mainstream production. Note polymer and spinneret process on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; highest light and chlorine fastness is only meaningful for similar fabrics. Record elastane content alongside Solution Dyeing, because blends shift the measured value. A result outside highest light and chlorine fastness usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write highest light and chlorine fastness with a stated tolerance, then verify against polymer and spinneret process. Keeping reference values for Solution Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with polymer and spinneret process, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for Solution Dyeing normally sit around highest light and chlorine fastness in mainstream production. Note polymer and spinneret process on the tech pack so nobody tests against an older revision.
Documentation
Record the standard revision on every report, because older versions can differ from current practice. Record elastane content alongside Solution Dyeing, because blends shift the measured value. A result outside highest light and chlorine fastness usually points to process drift rather than to the fibre itself.
