Heat Setting Frequently Asked Questions
Short answers to the questions buyers ask most often about Heat Setting.
What does it mean?
thermal stabilisation of synthetic knit. Working figures for Heat Setting normally sit around typically 180-195 degrees in mainstream production. Note stenter setting parameters on the tech pack so nobody tests against an older revision.
What value should be specified?
Start from typically 180-195 degrees and adjust for the end use of the garment. Record elastane content alongside Heat Setting, because blends shift the measured value. A result outside typically 180-195 degrees usually points to process drift rather than to the fibre itself.

How is it tested?
stenter setting parameters. Keeping reference values for Heat Setting lets suppliers quote without extra sampling rounds. Ask for conditioning details together with stenter setting parameters, since both affect the reading.
Why does it change between lots?
Process variables such as finishing temperature and elastane batch cause the normal spread of results. Working figures for Heat Setting normally sit around typically 180-195 degrees in mainstream production. Note stenter setting parameters on the tech pack so nobody tests against an older revision.
Can results be compared across suppliers?
Only when the same standard revision and conditioning are used; otherwise measurements are not equivalent. Record elastane content alongside Heat Setting, because blends shift the measured value. A result outside typically 180-195 degrees usually points to process drift rather than to the fibre itself.