Blue Ocean Closures launch fiber-based screw caps

Sweden-based Blue Ocean Closures (BOC) has announced a major advancement in sustainable packaging technology, revealing that its latest fiber screw caps can now match or even outperform traditional fossil plastic caps in terms of material cost and energy efficiency.

This achievement stems from improvements in BOC’s proprietary fiber-forming technology, which enables renewable fibers to be shaped directly from virgin or recycled carton board feedstock. The material is readily available and more affordable than conventional plastics, offering both economic and environmental benefits.

The company has also reduced production time to under two seconds, while cutting energy consumption to about one-tenth of that required for plastic molding. These innovations make fiber closures a competitive, low-carbon alternative for a wide range of packaging applications.

“For the first time, fiber-based closures are cost-competitive or even cheaper than fossil plastics, while using significantly less energy,” said Lars Sandberg, CEO of Blue Ocean Closures. “This alignment of sustainability and profitability represents a turning point for the packaging industry.”

The breakthrough was made possible through BOC’s extensive R&D efforts and collaborations with global brands such as Great Earth and The Absolut Group. The company’s technology enables the high-speed production of recyclable fiber components that can be processed through existing paper recycling systems, supporting the growing global movement toward circular packaging solutions in line with new EU sustainability regulations.