FOAMED MATERIAL MADE FROM BIODEGRADABLE PLASTICS MATERIAL COMPRISING 50 TO 95% THERMOPLASTIC STARCH, AT LEAST ONE THERMOPLASTIC POLYMER AND WATER IN THE FORM OF FOAMED PARTICLES

摘要

Expanded articles of biodegradable plastic material are produced by agglomerating expanded particles with density from 0.1. to 0.003 g/gm<3> and size from 0.5 to 10 mm of diameter, made of a material comprising: from 50 to 95% by weight of thermoplastic starch; from 0.5. to 45% by weight of at least one thermoplastic polymer; from 2 to 20% by weight of water; characterized in that the foamed particles are prepared through a route which consists of compressing/depressurising non foamed particles or through a heating treatment by microwave.