| 摘要 |
An extrusion pelletizer (1) for a polycarbonate resin includes: an extruder (2); a cooling unit (3); and a cutter (4). The extruder (2) includes a cylinder top (21), a first adapter (22), a polymer filter unit (23), a second adapter (24), and a die head (25). The polymer filter unit (23) includes a plurality of stick-shaped filter elements therein. A temperature of the second adapter (24) is set to be lower than a temperature of the polymer filter unit (23). The cooling unit (3) and the cutter (4) are disposed under an atmosphere in which air cleanliness defined in accordance with JIS B 9920 is any one of class 1 to class 7. |
