Anti-Static Finish Setting It Correctly on a Tech Pack
Anti-Static Finish should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
finish lowering surface resistivity. Working figures for Anti-Static Finish normally sit around below 1E11 ohms in mainstream production. Note EN 1149 surface resistance on the tech pack so nobody tests against an older revision.
Target value
Open the specification at below 1E11 ohms, adjusted to the end use. Record elastane content alongside Anti-Static Finish, because blends shift the measured value. A result outside below 1E11 ohms usually points to process drift rather than to the fibre itself.
Method line
Always pair the target with EN 1149 surface resistance so the mill and the laboratory test the same way. Keeping reference values for Anti-Static Finish lets suppliers quote without extra sampling rounds. Ask for conditioning details together with EN 1149 surface resistance, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for Anti-Static Finish normally sit around below 1E11 ohms in mainstream production. Note EN 1149 surface resistance 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 Anti-Static Finish, because blends shift the measured value. A result outside below 1E11 ohms usually points to process drift rather than to the fibre itself.
