Researchers in Sweden have developed a new bio-based adhesive specifically engineered for use in recycled packaging that must withstand freezing temperatures, marking a breakthrough in sustainable material science for cold-chain logistics. As reported by Pulp & Paper News, this innovation addresses a key challenge in packaging sustainability—finding alternatives to fossil-based glues that maintain performance under extreme conditions.

The adhesive, developed as part of a research project led by RISE (Research Institutes of Sweden) in collaboration with Swedish packaging and chemical companies, is derived from renewable raw materials such as lignin and plant-based polymers. It is designed to be compatible with recycled fiber substrates and can endure cold storage and transport conditions without losing bonding strength or integrity.

Traditional adhesives used in packaging often rely on synthetic, petroleum-based components that are not biodegradable and can interfere with fiber recycling processes. Moreover, many of these adhesives become brittle or fail at sub-zero temperatures, posing a problem for frozen food and pharmaceutical packaging. The new bio-based glue offers a viable alternative that enhances circularity and cold-chain performance.

“This innovation is a step forward in aligning functionality with environmental responsibility,” said a RISE spokesperson. “We’re enabling recyclable packaging that performs just as well in freezing temperatures, without relying on fossil-based inputs.”

One of the key design goals was ensuring the adhesive’s compatibility with industrial recycling systems. The glue has been tested to ensure it does not compromise pulp quality or processing efficiency, a critical factor for manufacturers and recyclers seeking to maintain material value in circular packaging loops.

The research team also focused on scalability and industry application. The adhesive is designed for use in existing packaging lines, including those for corrugated boxes, cartons, and laminated paperboard, making it easier for producers to adopt the technology without major equipment upgrades.

This innovation supports the packaging industry’s broader push toward fossil-free and recyclable materials, especially as European regulations tighten around packaging recyclability, extended producer responsibility (EPR), and carbon emissions. It also opens new possibilities for eco-friendly packaging in frozen food, biopharmaceuticals, and temperature-sensitive logistics.

With successful pilot tests completed, the partners are now exploring commercial rollout opportunities with packaging producers and food manufacturers across Northern and Central Europe. The adhesive is expected to be available on the market within the next 12 to 18 months.

By solving a performance gap that has long hindered full sustainability in cold-chain packaging, this bio-based glue innovation represents a significant advancement in functional, recyclable, and climate-resilient packaging solutions.