Calendering process and machine with dynamic compensation for geometry defects of the working rollers

Abstract

The invention proposes calendering machines and methods in which two work rollers (10, 20) define a working gap (e30) between the working surfaces (11, 21) of the two rollers, and in which a moving assembly comprising one of the work rollers is movable under the effect of at least one load actuator (32) to obtain a target value (e30c) of the working gap, characterized in that the at least one load actuator (32) delivers, on the first moving assembly, a total force (F(t)) adjusted successively in time as a function of an instantaneous angular position (θ(t)) of the two work rollers around their respective axes, and as a function of acquired values ​​(d60i(θ)), in a learning phase, of at least one quantity (d60(θ)) representative, for the instantaneous angular position (θ(t)), of a geometric deviation of the working surfaces of the two work rollers. Figure from the summary: FIG. 7