UPM Specialty Papers and Eastman Collaboration. Courtesy of: UPM Specialty Papers and Eastman introduce paper-based food packaging solution with compostable biobased coating.
The extrusion coating process applies a thin layer of molten plastic, such as polyethylene, onto substrates like paper or board. This method enhances moisture and grease barriers and improves sealing in paper-based packaging. Combining materials within one structure increases the durability and efficiency of paper-based food packaging. However, using fossil-based polymers like polyolefins in extrusion coating raises concerns about recycling challenges. Consequently, raw material producers and packaging manufacturers are developing more eco-friendly polymer/paper/board-based packaging solutions.
This is a review of barrier Properties. Courtesy of Trends and challenges in developing bio-based barrier coating materials for paper/cardboard food packaging.
The extrusion coating market includes flexible and rigid food packaging and medical applications. It could register a CAGR of approximately 5% by 2030. Food packaging remains a key application. The demand for new materials is increasing. These materials must maintain the structural and barrier properties of current materials while adhering to sustainability regulations. Additionally, the converters and Brands are adopting innovative solutions designed for recycling or composting. These alternatives are gradually replacing polyolefin coatings, particularly polyethylene, which has dominated the market.
You can also read: Sustainable Packaging: Adhesives and Coatings.
BASF has certified a new extrusion coating resin, Ecovio® 70 PS14H6. This resin contains 70-80% biobased content according to ASTM D6866. The grade offers excellent liquid and grease barrier properties. It also has high thermal stability.
BASF’s material performs competitively against polyethylene. It is excellent in processing, sealability, and adhesion to substrates. This grade is food-contact-approved and suitable for paper and board coating processes. It enhances disposal options and is ideal for producing cups and boxes for dairy products, trays, and wraps for dry food. BASF’s biodegradable material supports waste disposal and contributes to the circular economy.
UPM Specialty Papers and Eastman developed new paper-based packaging with a bioplastic coating for food applications. This innovation enhances oxygen and grease barriers. Additionally, this solution combines Eastman’s biobased, compostable Solus™ additives with the BioPBS™ polymer to create a thin coating layer over paper.
The packaging from this collaboration is recyclable within existing fiber recycling streams. PTS method (PTS-RH 021/97) approved its recyclability and validated individual components for domestic and industrial composting.
As the demand for sustainable packaging solutions continues to grow, innovations in extrusion coating are playing a crucial role in shaping the future of food packaging. The development of eco-friendly materials and collaborative efforts between industry leaders are driving the shift toward more recyclable and compostable options.
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