US manufacturer Metabolix has launched a new film grade resin that allows for production of compostable, and highly transparent, film and bags.
Mvera B5011 is claimed to meet international industrial standards for compostability, while also enabling customers to produce films for compostable bags and packaging applications "with exceptional transparency compared to competing products". The resin is certified for compostability by Vincotte to meet the EN13432 standard and by the Biodegradable Products Institute (BPI) to meet the ASTM D6400 standard.
According to Metabolix, it processes well on existing blown film equipment and features a good balance of puncture toughness, tear propagation resistance, seal strength, printability and durability.