In the packaging landscape, numerous companies are re-evaluating their approaches to product protection in light of escalating demands for recyclability. Stricter regulations at both national and EU levels are prompting retailers to seek packaging solutions that seamlessly integrate into existing recycling infrastructures. Consumers now expect materials that are straightforward and environmentally responsible to dispose of, while brand owners are navigating the delicate balance between performance, safety, and cost-efficiency.
Sappi has anticipated this growing need, having invested over ten years in the development of barrier papers. These innovative materials are mono-material, providing essential protection for a variety of products, are compatible with current packaging machinery with minimal adjustments, and can be integrated into the paper recycling stream.
“The demand has surged rapidly in recent times,” states Gustavo Duarte, Head of Business Development at Sappi Europe. “Brand owners are seeking tangible solutions that address their challenges, rather than theoretical concepts. They desire alternatives to plastic that are applicable within their operational contexts.”
Addressing the Needs of Contemporary Packaging Lines
Duarte highlights that when selecting new packaging materials, three critical factors must be considered. First and foremost is product protection. Various products—ranging from tea and cereals to chocolate, flour, and dried fruits—possess distinct sensitivities. While some require moisture protection, others may need barriers against oxygen or mineral oil.
“Shelf life is non-negotiable,” he emphasizes. “A failed barrier compromises not only the product but also disrupts the supply chain. Therefore, our testing protocols are rigorous and thorough, measuring permeation rates, evaluating moisture resistance, and assessing seal integrity for heat-sealed products.”
The second factor is compatibility with existing packaging machinery. Many production lines have been optimized for plastic films, known for their strength and flexibility. Adapting to paper can be challenging, as it behaves differently, despite achieving comparable performance to plastic.
“Plastic films offer greater flexibility and adaptability during processing,” explains Alexander Schröder, Product Application Leader at Sappi. “Paper requires meticulous handling. Factors such as tension, heat, and sealing pressure are critical. However, this does not necessitate new equipment for customers. Often, it just involves fine-tuning specifics. We collaborate closely with machinery manufacturers to assist customers in identifying necessary adjustments before transitioning.”
Schröder notes that the majority of clients handle this adaptation effectively. “Technicians are knowledgeable about their machines and recognize how minor alterations can yield significant improvements. While we provide support when necessary, many quickly navigate the transition.”
The final critical aspect is recyclability, a primary motivation driving brands towards barrier papers. Presently, numerous plastic packages end up in mixed waste streams due to sorting challenges.
“If a material can be integrated into the paper recycling stream, it vastly simplifies the process,” says Duarte. “This eases the burden on consumers, supports retailers, and ensures brands are proactive regarding future legal requirements. Recyclability frequently acts as the decisive factor for companies ready to evolve. Additionally, if barrier papers are disposed of correctly, they contribute to substantial CO2 reductions.”
Creating a Link Between Conventional Paper and Plastics
For years, the realm of flexible packaging has been largely dominated by plastics due to their sealing ease and protective qualities. Standard paper lacks the same level of defense, and though glassine provides limited grease resistance, it fails to offer moisture barriers or sealing capabilities.
“Barrier papers provide the necessary combination of sealability and protection akin to plastic films, but with the distinct advantage of being recyclable as mono-material within the paper waste stream. That is the defining difference,” Duarte adds. “Furthermore, in applications such as stand-up pouches and bags, the inherent stiffness of paper compared to plastics opens opportunities for paper-based solutions in sectors historically viewed as challenging for paper.”
Operating Within a Strict Regulatory Environment
Food packaging is subject to stringent regulations. Sappi collaborates with accredited external laboratories to verify that all materials comply with food contact standards. Every component entering Sappi’s mills must receive approval for direct food contact.
“These certifications are vital,” asserts Duarte. “Our clients depend on them for their documentation and audits. We ensure that evidence is consistently accessible and current.”
Recent regulations, such as the Packaging and Packaging Waste Regulation (PPWR), are also influencing expectations regarding recyclability. Sappi conducts internal testing of materials following CEPI/4evergreen methodologies before obtaining external certifications, allowing for early detection of potential issues. Given that Sappi anticipates a high degree of alignment between CEPI/4evergreen and PPWR, this positions them favorably for future European regulatory frameworks.
“This proactive testing facilitates rapid refinement of our papers,” he explains. “It also assures customers that the materials will comply with both present and future regulations.”
Responsible Sourcing as a Cornerstone of Progress
Transparency and responsible forest management are fundamental to Sappi’s operations. The company adheres to certification systems such as FSC, PEFC, and SFI across its global supply chain. In South Africa, Sappi oversees 400,000 hectares of certified plantations, which cater exclusively to local markets.
“No timber is shipped from South Africa to Europe,” Duarte clarifies. “Our European facilities source wood from sources within roughly 150 kilometers, ensuring shorter, transparent supply chains. Moreover, delivery documents for certified materials always include the necessary claims.”
This strategy is increasingly crucial for brand owners who are under mounting pressure to trace every aspect of their supply chain.
Evaluating the True Cost of Materials
At first glance, barrier papers may seem more costly compared to some plastic options. However, Duarte emphasizes that this comparison is not always straightforward. Plastics vary from simple mono-materials to intricate laminates, resulting in a wide price range.
“You need to consider the complete cost landscape,” he remarks. “Recycling fees can be higher for plastic laminates, and recyclable materials may receive financial incentives in certain regions.
When factoring in all expenses—material costs, recycling fees, and potential incentives—the total may favor paper-based solutions. While it varies by application, many companies are surprised by the financial analysis.”
A Decade of Innovation that Positions Sappi as a Leader
Sappi has been producing barrier papers for over ten years, establishing a comprehensive portfolio in the process. The company utilizes dispersion-based technology that allows papers to be recycled within the paper waste stream.
“We offer one of the broadest ranges of barrier papers available today,” Duarte notes. “We do not anticipate one solution to meet every need; instead, our focus is on crafting papers tailored to specific barrier requirements. This approach accelerates development, delivering products that meet both technical and commercial specifications.”
He believes that the ongoing shift towards paper-based flexible packaging will persist and grow in intensity, especially with the forthcoming implementation of PPWR.
“This evolution is gradual,” he comments. “However, the trajectory is unmistakable. Consumers demand packaging that facilitates recycling, while companies increasingly seek solutions that protect their products effectively and function efficiently on their production lines without significant financial investment. Barrier papers meet all these criteria, explaining the rising interest year after year.”
To discover more about Sappi, visit: www.sappi.com
