Interpack 2026: PulPac to unveil fiber-based caps to replace plastic solutions

PulPac is set to launch a new generation of caps at Interpack 2026 (May 7–13) in Düsseldorf, Germany. The caps are designed to meet the functional and consumer expectations, while moving toward a fiber-based solution.

 With the caps, PulPac aims to support the transition toward more material-aligned packaging systems. The development builds on ongoing work within the Bottle Collective initiative, where complete fiber-based bottle systems, including closures, are being examined and evaluated.

Charlotte Walldal, chief technology officer at PulPac, says: “We focus on creating value in what can be realized today and what comes next in packaging. Advancing fiber-based caps is a natural step in that journey.”

“When we show the cap to customers, the reaction says a lot. The first response is often disbelief that they’re made from fiber. The look, the sound when you tap it against a tabletop, and especially the tactile feel challenge expectations of what fiber can be.”

Advancing plastic alternatives

PulPac’s development is carried out with PA Consulting and in dialogue with industry stakeholders, including PulPac’s designated machine partner for this segment, Optima. 

The caps are said to enhance design flexibility, including the ability to differentiate the inside and outside of the cap, supporting product function and brand expression.

According to PulPac, early tests have shown “promising performance” across several parameters, including thread engagement, opening and closing functionality, sealing architectures, and overall tactile experience.

Early versions of the caps have been manufactured and tested in real-life conditions as part of ongoing bottle and packaging evaluations. 

This month, PulPac and Future Materials Sweden introduced a Dry Molded Fiber snus can for Yoik’s Helwit brand. The partnership is planning the industrialization and scale-up strategy for the new solution.