Which biopolymer is used for packaging films?

• A. Biobatch
• B. PLA
• C. PHA
• D. Glycolide

Answer: (A)

Packaging films need a polymer that can be drawn into very thin, uniform layers while still being strong, flexible and ideally biodegradable. A biopolymer chosen for film applications is formulated to melt-process well (so it can be blown into film or cast as a thin sheet), forms clear and smooth films, and offers suitable barrier properties and compostability.

Biobatch fits this purpose because it is designed for film production. It can be melt-processed into thin, continuous films and provides the kind of mechanical performance and degradation characteristics that packaging films require. While other biopolymers like PLA or PHA are also used in packaging films, this particular biopolymer is specifically tailored for film applications, which is why it’s the best fit for the question.