The Future of inline/offline Barrier Coating: Water-Based, Retort-Resistant, and Mono-Material Compliant

Presented by Yen Dinh, "Mitsui Chemcals, Inc."

The transition toward sustainable packaging is accelerating, driven by regulatory pressure, brand commitments, and consumer demand for recyclable solutions. Traditional barrier materials such as EVOH and aluminum foils, while effective, compromise recyclability and increase environmental impact. Recent advances in water-based polyurethane dispersion (PUD) coatings offer a breakthrough alternative. These coatings deliver exceptional oxygen and water vapor barrier performance while maintaining stability under high humidity and retort sterilization conditions. Their unique formulation supports mono-material film designs with over 90% polyolefin content, enabling lightweight, recyclable, and PFAS-free packaging without sacrificing functionality. They can be applied both inline and offline using standard coating methods, providing converters with flexibility and production efficiency. Furthermore, their applicability to paper substrates supports the growing paperization trend, expanding sustainable options for food, beverage, and healthcare packaging. By combining sustainability, process adaptability, and high-performance protection, water-based PUD barrier coatings define the future of packaging.