Europe’s packaging industry is exploring a new generation of adhesive-free paper packaging technologies as stricter recycling regulations drive demand for packaging that is easier to recover and process.

While paper and cardboard are among the world’s most recycled packaging materials, adhesives, labels and barrier coatings continue to create significant recycling challenges. These non-recyclable adhesive residues—commonly known as “stickies” within the paper recycling industry—can contaminate recovered fibre, damage recycling equipment and lower the quality of recycled paper.

With the European Union’s Packaging and Packaging Waste Regulation (PPWR) introducing higher recyclability requirements, packaging suppliers are accelerating the development of sealing technologies that eliminate or reduce the need for conventional adhesives.

Paper Recycling Faces an Adhesive Challenge

Paper recycling rates in Europe remain among the highest globally, with approximately 74% of paper and board consumed in 2024 being recycled.

However, packaging components such as pressure-sensitive labels, coatings and conventional adhesives can complicate recycling.

These materials may separate poorly during the pulping process, leaving adhesive contaminants that reduce fibre quality or cause entire recycling batches to be rejected.

As the PPWR requires packaging to achieve higher recyclability levels over the coming years, improving paper package design has become an important priority for packaging manufacturers.

German Companies Develop Alternative Sealing Technologies

Several German organizations are developing paper sealing technologies designed to replace conventional adhesives altogether.

Research organization Fraunhofer launched the PAPURE project in 2023 to develop a laser-based sealing process capable of bonding paper packaging without additional adhesive materials.

Instead of glue, the technology uses laser-generated heat to create sealed paper structures while preserving recyclability.

Fraunhofer expects the research project to conclude later this year and hopes to commercialize the technology through an industrial partner.

Meanwhile, engineering company Hermann Ultraschall is developing an ultrasonic paper sealing process that bonds paper using high-frequency vibration rather than adhesives. The company says discussions are already underway with several large packaging manufacturers regarding future industrial applications.

Food Packaging Still Presents Technical Challenges

Although adhesive-free sealing offers significant recycling advantages, technical limitations remain.

Current laser and ultrasonic systems cannot yet bond every paper grade, and some food-contact applications remain particularly difficult because barrier-coated papers require additional protection against moisture and grease.

For heat-sensitive food products such as chocolate and ice cream, German chemical company Henkel has introduced recyclable cold-seal technology designed specifically for coated paper packaging.

The solution allows barrier-coated paper to be sealed using pressure rather than heat, making it suitable for selected food applications while maintaining recyclability.

Henkel says the technology is already being used commercially within snack and confectionery packaging.

Regulation Is Accelerating Packaging Innovation

The growing interest in adhesive-free packaging is closely linked to upcoming European regulations.

Beginning in August 2026, the PPWR will introduce stricter recyclability requirements for packaging placed on the EU market, encouraging manufacturers to reduce materials that interfere with recycling processes.

Germany is also strengthening packaging reporting requirements and licensing systems, creating additional incentives for companies to improve packaging recyclability.

These regulatory changes are encouraging closer collaboration among paper producers, packaging converters, machinery suppliers and brand owners to redesign packaging systems from the material level through to manufacturing.

Recycling Depends on More Than Packaging Design

Industry experts note that eliminating adhesives alone will not solve every recycling challenge.

Paper packaging frequently fails to be recycled because it becomes contaminated during collection or is incorrectly sorted before reaching recycling facilities.

Nevertheless, reducing difficult-to-remove adhesive materials can improve fibre recovery and help support higher-quality recycled paper.

As manufacturers continue improving sealing speed, material compatibility and production efficiency, adhesive-free paper packaging could become an increasingly practical option for brands preparing for Europe’s next generation of packaging regulations.

Last Updated on 28/07/2026 by Jota Machinery