PROCESSING BY TWIN-SCREW EXTRUDER AND DEVICE THEREFOR

摘要

PURPOSE:To prevent change of properties of additive by heat by adding an additive to a treated material between a pump to suck the treated material and to transport under pressure and a cooling long die. CONSTITUTION:A passageway 17 for a treated material is equipped between a pump 4 and a cooling long die 5 and an additive injection vent 20 of an additive feeder 18 to be operated by a motor 19 and a homogenizer 23 provided with a high-speed stirrer 21 to be operated a motor 22 are set in the passageway. The treated composition sent under pressure from the pump 4 is blended with the additive, homogenized and sent under pressure from the passageway 17 of the treated material having a throttled tip to a cooling long die 5.