Exhaust Dyeing Frequently Asked Questions
Short answers to the questions buyers ask most often about Exhaust Dyeing.
What does it mean?
dye transferred from bath to fabric in batch. Working figures for Exhaust Dyeing normally sit around liquor ratio 1:8 to 1:15 in mainstream production. Note jet or overflow machines on the tech pack so nobody tests against an older revision.
What value should be specified?
Start from liquor ratio 1:8 to 1:15 and adjust for the end use of the garment. Record elastane content alongside Exhaust Dyeing, because blends shift the measured value. A result outside liquor ratio 1:8 to 1:15 usually points to process drift rather than to the fibre itself.
How is it tested?
jet or overflow machines. Keeping reference values for Exhaust Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with jet or overflow machines, since both affect the reading.
Why does it change between lots?
Process variables such as finishing temperature and elastane batch cause the normal spread of results. Working figures for Exhaust Dyeing normally sit around liquor ratio 1:8 to 1:15 in mainstream production. Note jet or overflow machines on the tech pack so nobody tests against an older revision.
Can results be compared across suppliers?
Only when the same standard revision and conditioning are used; otherwise measurements are not equivalent. Record elastane content alongside Exhaust Dyeing, because blends shift the measured value. A result outside liquor ratio 1:8 to 1:15 usually points to process drift rather than to the fibre itself.
