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