Part 2/7:
PVA, or polyvinyl alcohol, is a synthetic polymer created through a multi-step process involving polymerized ethylene. Its journey begins with the creation of polyvinyl acetate, which is then dissolved in ethanol or methanol to yield PVA. This material first hit the market in the 1920s, primarily for pesticide packaging, thanks to its water solubility and protective qualities.
Marketing often highlights PVA's biodegradability, making it appealing to eco-conscious consumers. It has favorable properties like excellent oxygen barrier capabilities, which can prolong the shelf life of food, and it is generally recognized as safe by the FDA.