| 摘要 |
A heat exchanger(3), for heating and cooling an extruder barrel(2) comprises lamellae(14) arranged at an angle to each other to form a hollow cylinder and the end faces(15,16) connecting the ends of the lamellae form the inner and outer surfaces of the hollow cylinder. In a heating and cooling arrangement(1) for an extruder barrel(2) the claimed heat exchanger(3) is located between a surrounding heater band(4) and the barrel. |
