VTT is investigating methods of foaming bioplastics to make beads that are further refined into products, such as insulation sheet, using methods typical of EPS manufacturing processes. The expansion of the bioplastic by foaming is carried out with consideration for the environment, using carbon dioxide. The density and heat insulation properties of the new biomaterial are similar to those of polystyrene. VTT plans to take its development work closer to industrial processing and to proceed from laboratory work to factory testing. Thus, it is now looking for partners from among companies operating in the field.