| 摘要 |
PURPOSE: A method for removing discolored matters in a natural raw lumber is provided to improve work efficiency without bending the wood or burning the wood during the process, and to express the natural raw lumber's own patterns and colors better. CONSTITUTION: The method for removing discolored matters in a natural raw lumber, having less than 15% of moisture content and having been dried for 2 to 12 days under the sun, is comprised of the steps of preparing a mixed solution including oxygenated water and ammonia at a mixing ratio of 1.5:1 to 3:1, and spreading the raw lumber with the mixed solution 1 to 10 times or soaking the raw lumber in the mixed solution for 1 to 5 minutes in order to remove the discolored matters contained in the raw lumber. Preferably, the concentration of the oxygenated water is between 25% and 45%, and the concentration of the ammonia is between 10% and 30%. |
