en.Wedoany.com Reported, Swedish innovator PulPac, in collaboration with PA Consulting and robotics partner Optima, has developed a new generation of plastic-like dry-molded fiber bottle caps. These caps aim to replace traditional plastic bottle caps, offering new business opportunities for brands.

As a widely used component in daily packaging, the dry-molded fiber bottle caps are designed to meet the functional requirements and consumer expectations of traditional plastics. Early tests show that they perform well in terms of thread engagement, opening and closing functions, sealing structure, and tactile feel.

The dry-molded fiber bottle caps align with the growing interest across the value chain in fiber-based alternatives to enhance material alignment and circularity. These caps also offer design flexibility, allowing differentiation between inner and outer surfaces, creating new display opportunities for brands.

PulPac stated that early versions of the caps are undergoing bottle and packaging evaluations and have already been tested in real-world environments. They will be showcased at the PulPac and Optima booths during the interpack 2026 exhibition.

Charlotte Walldal, Chief Technology Officer at PulPac, said: "At PulPac, we focus on creating value in the packaging space, both now and for the future. Advancing fiber-based bottle caps is a natural step in this journey."

"When we show these caps to customers, the reactions speak for themselves. The first reaction is often disbelief that they are made of fiber," she added. "The look, the sound when tapped on a table, and especially the feel, challenge people's expectations of fiber. It's unexpected and needs to be experienced firsthand to be fully understood."

PulPac also highlighted its work within the "Bottled Collective" initiative, which explores complete fiber-based bottle systems as integrated solutions. In a similar vein, Blue Ocean Closures won the top prize for recyclable packaging at last year's Sustainability Awards, and its closures are now commercially available for nutraceuticals.

Furthermore, PulPac recently partnered with SIG to establish a development program for producing dry-molded fiber closures for SIG's aseptic cartons, further expanding the application scope of dry-molded fiber bottle caps.

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