A coated film sample was prepared by applying commercial glue composed mainly of an aqueous solution of polyvinyl alcohol (PVA) on a polyester sheet. The sample was placed on a thermal insulator, and a batch drying experiment was performed with hot air. In this study a modified temperature change method was proposed. This method obviated the need to measure the overall mass of the moisture removed during drying. The drying rate of the sample was successfully obtained from the modified method by using the surface temperature history during drying measured by a radiation thermometer. The decreasing drying rate measured at the same mean moisture content decreased with increasing film thickness in the high range of the mean moisture content. The rate curves for various film thicknesses overlapped in the low range of the mean moisture content. The result was similar to a previous one for PVA aqueous solution. Additionally, an attempt to correlate the measured drying rate curves by using the drying characteristic model proposed previously by the authors on the basis of the Fick-type diffusion model and considering the acceleration effect on the mass transfer by drying stress showed good agreement between the correlated and the measured results.