The hot air from the conditions of various temperatures. During the same density tends to shrink. Where the temperature is 50 to slow desorption Rate, there are density 265 kg/tight , percent of shrinkage 15.42, there will be less shrinkage than higher temperatures. Color measurement values will find that the color of raw condition, the OPB color was yellowish, when through drying and the color of the board is light and white rose from. As the temperature increases with desorption faster that density and shrinkage little decreased, where temperature 100C density 247 kg / m, percent of shrinkage 23.94. Color measurement values was white, the brightness increase by L*, a*, b* and HUE. From the result of such a change to the temperature rise and the rate of evaporation of the water faster.