Weft Knitting Setting It Correctly on a Tech Pack
Weft Knitting should be written into the tech pack with a value, a tolerance and a method. This removes ambiguity from quotations.
Definition to agree
loops formed across the fabric width. Working figures for Weft Knitting normally sit around single jersey, rib, interlock in mainstream production. Note circular or flat machines on the tech pack so nobody tests against an older revision.
Target value
Open the specification at single jersey, rib, interlock, adjusted to the end use. Record elastane content alongside Weft Knitting, because blends shift the measured value. A result outside single jersey, rib, interlock usually points to process drift rather than to the fibre itself.
Method line
Always pair the target with circular or flat machines so the mill and the laboratory test the same way. Keeping reference values for Weft Knitting lets suppliers quote without extra sampling rounds. Ask for conditioning details together with circular or flat machines, since both affect the reading.
Tolerance line
State plus or minus limits to keep production realistic while protecting the requirement. Working figures for Weft Knitting normally sit around single jersey, rib, interlock in mainstream production. Note circular or flat machines 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 Weft Knitting, because blends shift the measured value. A result outside single jersey, rib, interlock usually points to process drift rather than to the fibre itself.
