| 摘要 |
Method for cooling flat plastic products, in which plasticized plastic compound is fed to a calender via a slot nozzle by means of an extruder and is rolled and calibrated to the desired shape in this calender between at least two smoothing rolls, after which the film or sheet produced in this way is fed to a chill section comprising a plurality of adjustable rolls and passes through this section until it is sufficiently cool and dimensionally stable, at least both the gap width between the rolls and the speed of the rolls being controllable by open- and/or closed-loop control. According to the invention, the degree of wrap of the flat plastic product around the respective roll is varied by adjusting the rolls in the chill section into a mutually offset arrangement, hence increasing or minimizing the cooling capacity, the gap width, once specified, being held constant during each adjustment operation by means of an appropriate control system.
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