Pad-Batch Dyeing Setting It Correctly on a Tech Pack
Pad-Batch Dyeing should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
padding dye liquor then cold dwell. Working figures for Pad-Batch Dyeing normally sit around for reactive dyes on cellulose in mainstream production. Note padder plus rotating batch on the tech pack so nobody tests against an older revision.
Target value
Open the specification at for reactive dyes on cellulose, adjusted to the end use. Record elastane content alongside Pad-Batch Dyeing, because blends shift the measured value. A result outside for reactive dyes on cellulose usually points to process drift rather than to the fibre itself.
Method line
Always pair the target with padder plus rotating batch so the mill and the laboratory test the same way. Keeping reference values for Pad-Batch Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with padder plus rotating batch, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for Pad-Batch Dyeing normally sit around for reactive dyes on cellulose in mainstream production. Note padder plus rotating batch 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 Pad-Batch Dyeing, because blends shift the measured value. A result outside for reactive dyes on cellulose usually points to process drift rather than to the fibre itself.
