| 摘要 |
PURPOSE:To make possible arbitrary shaping, by drying broken tip material or pulp material so the water content therein may be within a specified value, subjecting the material within a specified temperature range to heating and drying and to breaking and granulating operation, which renders the pH value neutral. CONSTITUTION:A cellulosic material such as broken tip material, pulp material, etc. is heated and dried so that the water content therein may be up to 15%. This drying process causes the texture of the fibers constituting the material to be broken thereby the cellulose is broken up. When an emulsion type urea resin adhesive liquid is added to the material, the material is well impregnated with the urea resin adhesive liquid. Then the material is heated and dried at a temperature in the range of 100-150 deg.C and is subjected to breaking and granulating operation to produce a fine powder having a particle diameter on the order of 100-150 mesh. In this course, the pH value of the material itself becomes in the range of 6-7. The molded item of said material is rich in woody feeling, excellent in water resistance, abrasion resistance and impact resistance, and high in surface hardness. |
