What testing methods should I use to measure bond strength for retort packaging?The most common method is T-peel testing according to ASTM F88 or similar standards. You cut 15mm-wide strips of the retorted pouch, place the two tails in a tensile tester's grips, and pull them apart at 200–300 mm/min. However, retort packaging requires two critical extra steps: (1) test both before and after retort to measure retention, and (2) test in both directions — with the pouch seam and across it — because delamination often starts at the sealed edges. Some labs also perform a "heat creep" test under constant load at 120°C to simulate real-world failure modes that a standard T-peel cannot reveal.https://www.sinstarsl.com/bond-strength-in-retort-packaging-can-solvent-free-qualify