Flatlock Seam Specification Targets for Buyers
Setting Flatlock Seam correctly on a tech pack prevents most later disputes. Targets belong on the page before the first fabric sample.
Where to write it
Place Flatlock Seam next to composition and weight so all three are quoted as one package. Working figures for Flatlock Seam normally sit around used next to skin in mainstream production. Note flatlock machines on the tech pack so nobody tests against an older revision.
Reference level
Typical activewear expectation: used next to skin. Record elastane content alongside Flatlock Seam, because blends shift the measured value. A result outside used next to skin usually points to process drift rather than to the fibre itself.
Tolerances that work
Allow a small tolerance rather than a fixed number, since normal process variation exists in every lot. Keeping reference values for Flatlock Seam lets suppliers quote without extra sampling rounds. Ask for conditioning details together with flatlock machines, since both affect the reading.
Verification method
Confirm with flatlock machines and keep the report against the bulk record. Working figures for Flatlock Seam normally sit around used next to skin in mainstream production. Note flatlock machines on the tech pack so nobody tests against an older revision.
Commercial note
Tightening beyond practical need raises cost without improving garment life, so set the tightest target only where it protects the customer. Record elastane content alongside Flatlock Seam, because blends shift the measured value. A result outside used next to skin usually points to process drift rather than to the fibre itself.
