UPM Speciality Papers and Eastman have jointly developed a novel biopolymer-coated paper packaging solution designed for food applications that require grease and oxygen barriers.
The solution integrates Eastman's bio-based and compostable Solus additives with BioPBS polymer to create a thin coating on UPM's compostable and recyclable barrier base papers to form. Thanks to the low thickness of the coating, the solution is suitable for reuse in existing fibre recycling streams.
„For example, the new biopolymer-coated solution offers a new option for food products that require demanding packaging, from confectionery to meat pies in chiller cabinets.“
Esa Saukkonen, Manager, Packaging Portfolio Development at UPM R&D
The solution enhances the barrier effect of the UPM Solide Lucent and UPM Prego barrier base papers, providing performance that cannot be achieved with the individual components alone. The coated paper also offers good heat sealability and at the same time retains the barrier protection when folded.
The challenge with the Combination of extrusion coating and paper lies in the adhesion of the coating to the paper, particularly in the case of bio-based or biodegradable extrusion coatings. The solution developed by UPM Speciality Papers and Eastman is intended to help solve this problem.
„Through our collaboration with UPM, we have developed versatile fibre-based packaging solutions that are compostable and can be easily integrated into extrusion coating lines. The Eastman Solus additive reduces coating thickness, which lowers plastic consumption and enables the recyclability of food packaging. These additives have been instrumental in developing scalable, sustainable paper packaging for brands.“
Bhuma Rajagopalan, Marketing Manager, CASE Innovation at Eastman
The packaging solution was according to the PTS method (PTS-RH 021/97 Cat. II), and the individual components of the solution were tested for both domestic and industrial compostability.
Source: UPM
