Disperse Dyeing Setting It Correctly on a Tech Pack
Disperse 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 class for polyester. Working figures for Disperse Dyeing normally sit around high temperature route at 130 degrees in mainstream production. Note HT jet dyeing machine on the tech pack so nobody tests against an older revision.
Target value
Open the specification at high temperature route at 130 degrees, adjusted to the end use. Record elastane content alongside Disperse Dyeing, because blends shift the measured value. A result outside high temperature route at 130 degrees usually points to process drift rather than to the fibre itself.
Method line
Always pair the target with HT jet dyeing machine so the mill and the laboratory test the same way. Keeping reference values for Disperse Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with HT jet dyeing machine, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for Disperse Dyeing normally sit around high temperature route at 130 degrees in mainstream production. Note HT jet dyeing machine 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 Disperse Dyeing, because blends shift the measured value. A result outside high temperature route at 130 degrees usually points to process drift rather than to the fibre itself.
