Spacer Fabric Test Methods and Acceptable Limits
Spacer Fabric is verified through double Raschel machines. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
double Raschel machines defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for Spacer Fabric normally sit around 250-450 GSM in mainstream production. Note double Raschel machines on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; 250-450 GSM is only meaningful for similar fabrics. Record elastane content alongside Spacer Fabric, because blends shift the measured value. A result outside 250-450 GSM usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write 250-450 GSM with a stated tolerance, then verify against double Raschel machines. Keeping reference values for Spacer Fabric lets suppliers quote without extra sampling rounds. Ask for conditioning details together with double Raschel machines, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for Spacer Fabric normally sit around 250-450 GSM in mainstream production. Note double Raschel 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 Spacer Fabric, because blends shift the measured value. A result outside 250-450 GSM usually points to process drift rather than to the fibre itself.
