Weft Knitting Test Methods and Acceptable Limits
Weft Knitting is verified through circular or flat machines. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
circular or flat machines defines sample size, conditioning and calculation, so values are comparable only within the same revision. 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.
Result interpretation
Read the value together with construction notes; single jersey, rib, interlock is only meaningful for similar fabrics. 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.
Typical limits
Buyers commonly write single jersey, rib, interlock with a stated tolerance, then verify against circular or flat machines. 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.
Sources of variation
Conditioning time, operator technique and shade all influence the result. 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.
Documentation
Record the standard revision on every report, because older versions can differ from current practice. 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.
