PFAS Restrictions Setting It Correctly on a Tech Pack
PFAS Restrictions should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
chemical limits on perfluorinated compounds. Working figures for PFAS Restrictions normally sit around moving to non-detect targets in mainstream production. Note EN 17681 tests after degradation on the tech pack so nobody tests against an older revision.
Target value
Open the specification at moving to non-detect targets, adjusted to the end use. Record elastane content alongside PFAS Restrictions, because blends shift the measured value. A result outside moving to non-detect targets usually points to process drift rather than to the fibre itself.
Method line
Always pair the target with EN 17681 tests after degradation so the mill and the laboratory test the same way. Keeping reference values for PFAS Restrictions lets suppliers quote without extra sampling rounds. Ask for conditioning details together with EN 17681 tests after degradation, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for PFAS Restrictions normally sit around moving to non-detect targets in mainstream production. Note EN 17681 tests after degradation 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 PFAS Restrictions, because blends shift the measured value. A result outside moving to non-detect targets usually points to process drift rather than to the fibre itself.
