Bonding Test Methods and Acceptable Limits
Bonding is verified through ISO 15797 dimensional check plus peel test. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
ISO 15797 dimensional check plus peel test defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for Bonding normally sit around film thickness 0.05-0.15 mm in mainstream production. Note ISO 15797 dimensional check plus peel test on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; film thickness 0.05-0.15 mm is only meaningful for similar fabrics. Record elastane content alongside Bonding, because blends shift the measured value. A result outside film thickness 0.05-0.15 mm usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write film thickness 0.05-0.15 mm with a stated tolerance, then verify against ISO 15797 dimensional check plus peel test. Keeping reference values for Bonding lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 15797 dimensional check plus peel test, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for Bonding normally sit around film thickness 0.05-0.15 mm in mainstream production. Note ISO 15797 dimensional check plus peel test 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 Bonding, because blends shift the measured value. A result outside film thickness 0.05-0.15 mm usually points to process drift rather than to the fibre itself.
