ITENE achieves high-barrier molded cellulose to challenge rigid plastics in primary packaging

Bridging the Gap Between Fiber and Plastic

In 2026, the packaging industry faces an undeniable mandate: reduce single-use plastics without compromising product shelf life or structural integrity. Addressing this directly, the technological center ITENE (@ITENE) has successfully concluded the PULPFICTION project. Funded by the Valencian Institute of Business Competitiveness and Innovation (IVACE+i) and European FEDER funds, the initiative has engineered rigid molded cellulose packaging capable of replacing traditional plastics across the food, cosmetics, and electronics sectors.

The core achievement of this multi-year research lies in overcoming the historical limitations of fiber-based materials, namely moisture resistance, grease barrier, and gas permeability. By rethinking the pulp formulation and surface functionalization from the ground up, ITENE has delivered a recyclable solution that meets the stringent demands of both primary and secondary packaging.

Targeted Fiber Formulations for Distinct Markets

During the execution of PULPFICTION, researchers divided the technical approach based on the end-use application. For primary food packaging, where direct contact regulations are rigorous, the team selected specific blends of short and long virgin fibers. This combination ensures optimal mechanical performance while complying with all food safety standards.

Conversely, for secondary packaging applications in cosmetics and electronics, the focus shifted toward economic competitiveness and physical protection. ITENE utilized recycled fibers enriched with bio-based functional additives, such as starch. This approach maximizes structural rigidity and shock absorption, making it highly suitable for protecting fragile electronic devices or heavy cosmetic glass jars during transit.

Breakthrough Barrier Performance and Thermal Resistance

The most significant technical leap for the converting industry comes from the surface functionalization of the molded trays. Through advanced spray coating technologies and ultra-thin lamination with compostable films, the new cellulose packaging achieves performance metrics previously reserved for multi-layer plastics.

Key technical validations from the project include:

• Extreme hydrophobicity: A water contact angle exceeding 110 degrees, preventing moisture absorption in humid environments.
• Maximum grease resistance: Achieving a KIT 12 rating, the highest standard for oleophobic barriers available on the market.
• Modified Atmosphere Packaging (MAP) suitability: Oxygen Transmission Rates (OTR) controlled between 5 and 50 cc/m²·day, and Water Vapor Transmission Rates (WVTR) ranging from 1 to 3 g/m²·day.
• Thermal stability: Specific variants designed for microwave and conventional oven use, withstanding temperatures from 140 °C to 190 °C.

These properties make the molded pulp viable for fresh food, ready-to-eat meals, and complex industrial applications. To guarantee industrial scalability, ITENE also designed and deployed a new laboratory-pilot molding and drying system. This infrastructure allows converters to validate prototypes under conditions that closely mimic commercial manufacturing environments, significantly reducing time-to-market.

Restructuring the Supply Chain for Electronics and Cosmetics

Beyond the strict requirements of the food sector, the electronics and cosmetics industries have been actively searching for drop-in replacements for expanded polystyrene (EPS) and thermoformed PET trays. The rigid molded cellulose developed by ITENE offers a highly customizable alternative. Because the recycled fiber pulp can be molded into precise, complex geometries, it provides excellent cushioning and nesting capabilities.

The success of the PULPFICTION project highlights the advanced capabilities of European R&D in materials science. ITENE has not only provided a theoretical framework but a market-ready structural matrix that converters can seamlessly integrate into their production strategies.

The technical leap achieved by ITENE demonstrates that fiber-based packaging has moved beyond basic sustainability to deliver uncompromising industrial performance. Will the current global converting infrastructure adapt fast enough to scale these advanced pulp formulations commercially? Follow The Paper for daily news, market signals and key updates from the global paper, corrugated and packaging industry. — Sigue toda la actualidad del sector en www.thepaper.ai