abstract |
Degradable foamed lactic acid (co)polymer products, such as trays andncontainers in general, are produced by the extrusion of the (co)polymersnin the presence of a foaming agent selected from nitrogen, carbonndioxide and mixtures thereof, at a temperature within the range of T m +n10°C and T m -30°C, where T m is the melting temperature of then(co)polymer. |