Solution Dyeing Setting It Correctly on a Tech Pack
Solution Dyeing should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
adding pigment before filament extrusion. 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.
Target value
Open the specification at highest light and chlorine fastness, adjusted to the end use. 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.
Method line
Always pair the target with polymer and spinneret process so the mill and the laboratory test the same way. 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.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. 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.
Approval step
Approve the result on pre-production bulk rather than on development fabric only. 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.
