Method for modifying e.g. medium density fiber board, involves maintaining maximum temperature over time period of specific hours and cooling thermal chamber or pressure tank at ambient temperature

摘要

The method involves heating a thermal chamber (1) or a pressure tank up to maximum temperature in a temperature range from 150 to 220 degree Centigrade, where heating time is of 1-10 minutes per Kelvin. The maximum temperature is maintained over a time period of 1-8 hours. The thermal chamber or the pressure tank is cooled at ambient temperature, where cooling time is of 1-10 minutes per Kelvin. The thermal chamber or the pressure tank is equipped with a device that regulates humidity in the thermal chamber or the pressure tank.