Polylactic acid (PLA) and Polyhydroxyalkanoates (PHA) or compounds containing one of the two materials are the material of choice for applications such as trays, cutlery or agriculture clips. The use of Calcium Carbonate in these hydrolysis-sensitive polymers requires a special surface modification on the calcium carbonate to prevent polymer degradation during extrusion. Answering the market demand to use more Calcium Carbonate in biopolymers, Omya has developed Omya Smartfill, which also gives the PLA better elongation, impact strength and punchability.