Patent ID: 8221660

Claim:
A method for making a surface-reinforced solid wood section material comprising: drying wood having a density less than 700 kg/m 3 until the moisture content is between 5% and 12%; compressing the dried wood by employing a hot press with upper and lower pressing boards having different first temperatures on the surface of the wood under constant pressure of between 25 Mpa and 50 Mpa and wherein the temperature of the pressing board having the first higher temperature is between 140° C. and 200° C. and the temperature of the pressing board having the first lower temperature is 100° C. lower than the pressing board having the first higher temperatures; reducing the temperature difference between the upper and lower pressing boards and maintaining the reduced temperature difference and pressure for between 30 minutes and 180 minutes after compressing the dried wood surface; pre-carbonizing the wood at a temperature less than 150° C. for a time between 1 and 4 hours; and carbonizing the wood.