| 摘要 |
In order to improve the efficiency of hot calender, there is proposed to select as large an entwining angle of the heat cavity (2) partially enveloping the calender cylinder (1) as possible. The reduction of the diameter calender cylinder (1) occurring in the case of a continuous operation of the hot calender has an antagonist effect. The present invention solves this problem by providing outside the cavity (2) reinforcement ribs (4) which extend perpendicularly to the calender direction and which are heated. Consequently, the reinforcement ribs (4) extend more peripherally than at their small surface connection points with the cavity (2) which consequently results in a contraction and a reduction of the diameter of the cavity (2). Thereby, the calender cylinder (1) may be enveloped by the cavity (2) throughout an angular sector larger than 180<o>, without empeding the insertion of the calender cylinder (1) into the cavity (2). |
