The inspection of both the seal integrity and seal strength of plastic
packages containing low-acid shelf-stable foods is currently performe
d using destructive and manual test methods. Automated non-destructive
sensing technologies would allow 100% inspection to be carried out on
line, As will be discussed, the evaluation and application of such te
chnologies for package inspection is advancing as a practical solution
to the current problems associated with integrity testing. This artic
le also examines how to determine critical defect parameters to be use
d as design criteria for these technologies.