Rolling device for processing planar material, smoothing device for smoothing film or sheet and method for producing planar material

Abstract

The invention relates to a rolling device for processing planar materials, in particular for smoothing films (F*) or plates, comprising a first rolling unit (1) and a second rolling unit (2), Therein, each rolling unit (1, 2) comprises: - at least one drive motor with a motor moment of inertia JM, - rolls (10, 20) with a roll moment of inertia JW and - at least one transmission for kinematically coupling the roll (10, 20) to the at least one drive motor with a transmission ratio iMW between the at least one drive motor and the roll (10, 20), wherein the second rolling unit (2) The roll (20) can be rotated against the roll (10) of the first rolling unit (1), and wherein the roll (10) of the first rolling unit (1) is in contact with the second rolling unit (2) A first nip (40) is formed between the rollers (20), and the planar material is guided through the nip (40). According to the invention, the rolling installation is characterized in that, in at least one of the first and second rolling units (1, 2), the moment of inertia between the at least one drive motor and the rolls (10, 20) - rotational speed Ratio MMW≦6 and select transmission ratio 1<iMW≦40, where, applies: (Formula I), where nM - speed of drive motor and nW speed of roll (10,20). Furthermore, the invention relates to a smoothing device for smoothing films or plates and a method for producing planar materials, in particular films or plates.

Description

technical field [0001] The invention relates to a rolling device for processing planar materials, in particular for smoothing films or plates, comprising a first rolling unit and a second rolling unit, wherein each rolling unit comprises a Motor moment of inertia J M at least one drive motor with a roll moment of inertia J W The roll and at least one transmission device, which is used to drive the transmission ratio i between the at least one drive motor and the roll MW Kinematically coupling the rolls to the at least one drive motor, wherein the rolls of the second rolling unit are rotatable against the rolls of the first rolling unit, and wherein the rolls of the first rolling unit are in contact with the second Between the rolls of the rolling unit a first roll gap is formed, through which the planar material is guided. Furthermore, the invention relates to a method for producing a planar material, in particular a film or a plate. Background technique [0002] Product...

AI Technical Summary

Problems solved by technology

However, it has proven in practice that such a device design is not sufficient to reliably avoid vibration marks on high-quality film surfaces

In addition, no motors are available for operation in this speed and torque range

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