| 摘要 |
Method and apparatus for heating an elongated polymer product. In the method, infrared radiation is directed at the polymer product from at least two infrared radiators. According to the invention, the radiators are arranged to move about the longitudinal axis of the polymer product along a circular arch, each radiator moving in a parallel movement during the heating of the polymer product. The heating zone comprises e.g. a cylindrical support structure to which the infrared radiators are attached, whereby during operation of the apparatus the radiators are rotatably supported by the support cylinder and rotatable about the centre axis thereof. According to the invention, the polymer product can be evenly heated and the apparatus is easy to combine as a part of continuous pipe production process. |
