At Interpack 2026, Kiefel is introducing a new solution for natural fiber packaging: an innovative “double-dip” wet molding process that creates grease and oil barriers entirely based on cellulose, eliminating the need for additional plastic coatings.
The technology is being demonstrated live on a KFT Lab machine at booth C57 in hall 8, highlighting an approach designed for industrial-scale production and the growing demand for sustainable food packaging solutions.
According to Thomas Kreiseder, Director Product Management at Kiefel, the new process integrates functional barrier properties directly into the fiber structure itself, offering an efficient, scalable solution built entirely on renewable raw materials.
The “double-dip” process and enhanced functional performance
The new method expands the application potential of natural fiber packaging by improving durability and resistance while maintaining recyclability and biodegradability.
Unlike conventional approaches based on spray coatings or additives, Kiefel’s technology relies on a patented multi-stage manufacturing process featuring an integrated microfibrillated layer. The result is a high-performance grease and oil barrier created exclusively from natural fibers.
At Interpack, visitors can experience the material’s performance firsthand at a dedicated testing station, where the barrier properties will be shown to remain stable for weeks or even months.
Typical applications include margarine tubs, takeaway food packaging, and other food-contact solutions.
Wet Fiber and Dry Fiber technologies working together
This development is part of Kiefel’s broader “Perfect Match” strategy, aimed at synchronizing technologies and processes to achieve the optimal balance between material selection, functionality, and cost efficiency.
Wet Fiber technology is particularly suitable for complex, deep-drawn packaging requiring advanced functional performance, while Dry Fiber offers a highly efficient solution for converting roll-fed paper and fibers into lightweight, dimensionally stable packaging.
Together, these complementary technologies create new opportunities for FMCG brands and converters, ranging from high-performance individual components to fully integrated packaging solutions from a single source.
Live demonstrations at major international trade fairs
Following Interpack, Kiefel’s new fiber-based barrier solution will also be showcased live at other major international exhibitions, including Plastpol, Equiplast, and Plast Milan.
Beyond fiber packaging
In addition to its fiber technologies, Kiefel is presenting solutions across the entire packaging value chain, from thermoforming systems for plastic packaging to applications for the medical and pharmaceutical industries.
As a global system provider, Kiefel combines machinery, tooling, automation, and services into integrated production solutions designed for future-proof manufacturing.