Finnish Breakthrough Brings Fully Cellulose-Based Packaging Closer to Market

Researchers at the VTT Technical Research Centre of Finland and LUT University have developed a new cellulose-based film and coating technology designed to replace fossil-based plastics in the packaging sector. Developed through the F3 – Films for Future project in collaboration with 34 industrial partners, the innovation offers plastic-like performance while remaining fully recyclable and biodegradable. This breakthrough is particularly significant as the industry prepares for stricter European Union regulations, such as the Packaging and Packaging Waste Regulation (PPWR), which mandates reduced plastic content and higher recyclability.

The F3 project, which concluded in March 2026, successfully demonstrated a technology that treats cellulose as a polymer rather than a fiber to create transparent films with high mechanical strength. These materials achieve oxygen transmission rates (OTR) below 1 cm²/m²/day for films and below 0.2 cm²/m²/day for coatings, matching the barrier performance of conventional plastic films. Additionally, the coatings provide high grease resistance with a KIT 12 rating, making them suitable for demanding applications such as dry foods and bakery products.

A primary advantage of the new material platform is its compatibility with existing industrial converting and manufacturing processes, including thermoforming. Ali Harlin, Research Professor at VTT, emphasized that the goal is to help manufacturers meet regulatory requirements without sacrificing product protection or production efficiency. Industry partners like Colombier Finland and Metsä Board noted that the ability to integrate these plastic-free barrier coatings into current production lines without requiring entirely new systems is a critical factor for successful commercial scale-up.

Following the successful pilot-scale demonstration, the project is now moving toward commercial implementation, with initial applications expected in food packaging. Beyond food, researchers believe the technology has potential applications in pharmaceuticals, electronics, and advanced functional coatings. Future development will focus on maintaining barrier performance in humid conditions and integrating intelligent features such as sensors for monitoring moisture and gas composition, further positioning cellulose as a versatile, renewable engineering material for a circular economy.