Naturally degradable high barrier PHA multi-layer for sustainable food packaging

Overview

This innovation introduces a naturally degradable multi-layer film composed of PHA (polyhydroxyalkanoate) and PVA (polyvinyl alcohol), aimed at replacing conventional aluminum foil in dairy packaging. The solution provides excellent water vapor and oxygen barrier properties, essential for maintaining the quality and safety of dairy products. Additionally, this film structure is designed to be biodegradable, aligning with growing demand for environmentally sustainable packaging solutions.

Technical specifications

• PHA (Polyhydroxyalkanoate): A biodegradable polymer providing excellent barrier properties and heat sealability, crucial for dairy packaging.
• PVA (Polyvinyl Alcohol): Known for its superior oxygen barrier capabilities, PVA is modified to enhance moisture resistance and applied as a coating on PHA films.
• Material modifications: Includes varying grades and properties of PHA, integrating inorganic materials, antioxidants, and chain extenders to optimize barrier properties and processability.
• Processing design: Utilizes modified materials with experimental processing techniques to produce samples that meet dairy packaging technical requirements.

Technology readiness level

This technology is currently at Technology Readiness Level 3, indicating a proof-of-concept stage with ongoing iterations for sample testing and validation according to technical and food safety standards.