Biodegradable polyesters often suffer from low melt viscosity and poor structural integrity during high-speed extrusion coating. Improving melt strength prevents neck-in and web breakage during processing.

Amorphous polyhydroxyalkanoates are often blended to address the inherent brittleness and narrow processing windows of biodegradable polyesters. Improving melt strength and structural integrity during extrusion prevents material failure and degradation.

The keywords focus on promoters for vaporization and growth, indicating that the base polyester resins (PBS/PLA) do not naturally release or disperse functional additives at an effective rate. Improving release kinetics ensures the biological or chemical payload reaches the target environment efficiently.

Conventional polymer laminates and mobile device security packaging create long-term ecological waste due to non-degradability. Transitioning to biodegradable resins addresses the accumulation of plastic waste in landfills and ecosystems.