| 摘要 |
PURPOSE:To obtain a mechanism to prevent particles from adhering to one another and keep them in separate state, and a mechanism to feed them to an extruder at a constant rate by a method wherein high temperature granular material, which is discharged from a high speed fluid mixer, is held in a drum type rotary surge tank and kept at the predetermined temperature. CONSTITUTION:When a mixture of solid dust and thermoplastic resin is agitated with a high speed fluid mixer 1 under the state that heat is supplied from outside and the peripheral speed of agitating blades is set to be 35-40 m/sec, the temperature of the mixture reaches a temperature higher than the melting point of the resin by 20-50 deg.C, resulting in obtaining granular material produced by adhering solid dust all around resin particles. After that, the granular material is discharged in a drum type rotary surge tank 3. The granular material is lifted along the wall of the rotating drum and falls by its own weight, parting from the wall when lifted to some extent. By repeating the above-mentioned action, the granular material will be kept in loosely ground state at all times, resulting preventing the particles from adhering to one another. |
