Reactive Dyeing Setting It Correctly on a Tech Pack
Reactive Dyeing should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
dye forming a bond with cellulose. Working figures for Reactive Dyeing normally sit around 60-80 degrees with salt and alkali in mainstream production. Note exhaust or pad processes on the tech pack so nobody tests against an older revision.
Target value
Open the specification at 60-80 degrees with salt and alkali, adjusted to the end use. Record elastane content alongside Reactive Dyeing, because blends shift the measured value. A result outside 60-80 degrees with salt and alkali usually points to process drift rather than to the fibre itself.
Method line
Always pair the target with exhaust or pad processes so the mill and the laboratory test the same way. Keeping reference values for Reactive Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with exhaust or pad processes, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for Reactive Dyeing normally sit around 60-80 degrees with salt and alkali in mainstream production. Note exhaust or pad processes on the tech pack so nobody tests against an older revision.
Approval step
Approve the result on pre-production bulk rather than on development fabric only. Record elastane content alongside Reactive Dyeing, because blends shift the measured value. A result outside 60-80 degrees with salt and alkali usually points to process drift rather than to the fibre itself.
