Leaks
Swellers
Deterioration, aging
Product-package chemical interaction
Cans – tin-plated steel, aluminum
PETE bottles (water, carbonated beverages)
Polyethylene bottles/jugs
Pouches, laminates, tetrapacks
Glass bottles and jars
Others (paperboard. …)
Polymer additives – necessary for structural integrity and adequate shelf life. I studied all the chemical & functional categories of ingredients added to PE, PETE, PP et al. Little did I suspect that the tiny broken off microparticles could be absorbed intact in the GI tract etc and be even more problematic.