Singeing Setting It Correctly on a Tech Pack
Singeing should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
burning off surface fibre protrusions. Working figures for Singeing normally sit around used for staple yarn fabric in mainstream production. Note gas singeing machine on the tech pack so nobody tests against an older revision.
Target value
Open the specification at used for staple yarn fabric, adjusted to the end use. Record elastane content alongside Singeing, because blends shift the measured value. A result outside used for staple yarn fabric usually points to process drift rather than to the fibre itself.

Method line
Always pair the target with gas singeing machine so the mill and the laboratory test the same way. Keeping reference values for Singeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with gas singeing machine, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for Singeing normally sit around used for staple yarn fabric in mainstream production. Note gas singeing machine 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 Singeing, because blends shift the measured value. A result outside used for staple yarn fabric usually points to process drift rather than to the fibre itself.