| 摘要 |
PURPOSE:To enable smooth mixing by facilitating kneading to a compound, by stirring a fine powder with bulk specific gravity of 0.1 or less at a high speed so as to adsorb the same at least by the surface of a powder with bulk specific gravity of 0.2 or more. CONSTITUTION:A fine powder with bulk specific gravity of 0.1 or less and a powder with bulk specific gravity of 0.2 or more are introduced into a rotary high speed stirrer and stirred at such a high sped that the peripheral speed at the leading end of a rotary blade is about 100m/min or ore, pref., about 200-10,000m/min. By this method, the aforementioned fine powder is adsorbed at least by the surface of the powder with bulk specific gravity of 0.2 or more. Bulk specific gravity is a value based on the measuring method standardized in JIS K6721(1977) and, as the fine powder with bulk specific gravity of 0.1 or less, there is a silica fine powder. As the powder with bulk specific gravity of 0.2 or more, there are a synthetic resin, a filler, pigment, a fire retardant, an oxidation inhibitor and a stabilizer. |
