| 摘要 |
PURPOSE:To take out quantitatively clean polymers directly from the main outlet for polymers by a method in which the discharge amount of a polymer from the polymer outlet of a degassing extruder is controlled to regulate the pressure of a resin in the extruder. CONSTITUTION:Crude polymer is deprived of its volatile and solvent components by a screw 3 through a vent port 4 by suction and sent to near a polymer outlet 5. The polymer near the outlet 5 is taken out of a polymer discharge amount regulator 11 through the main polymer outlet 8 and the polymer outlet 5 and immediately soon supplied to dies 12 and 12' for molding. By the regulator 11, the resin pressure P of the degassing extruder 1 and the revolving number of the driver for the regulator 11 are controlled in an interlocking manner, thereby making the resin pressure P constant. The treated clean polymer can thus be continuously supplied to the dies and the polymer of stable quality can be obtained. |
