<p>A sheet formed by using as a main component an aliphatic polyester having a melt viscosity of 1.0 x 10<3> - 1.0 x 10<6> poises at a temperature of 190 DEG C and a shear rate of 100 sec<-><1>, and having a melting point of 70 - 190 DEG C . The sheet of the present invention is biodegraded when buried in soil and is excellent in mechanical properties and transparency. The sheet is also superior in non-absorbency of aroma as well as heat-sealability and formability.</p>
