The invention relates to a mixture of biodegradable polyesters which
includes an aromatic-aliphatic polyester (A), an aliphatic polyester (B)
and a polylactic acid polymer (C) in which the concentration of A varies,
with respect to (A+B) in the range between 40 and 70% by weight, and the
concentration of C with respect of (A+B+C) is of between 6 and 30% by
weight.