Arrangement for coating band-shaped film substrates e.g. ferromagnetic metal film, comprises wind-off and take-up rollers guided between the substrates under strip tensile stress and coating station comprising two coating sources

摘要

The arrangement for coating band-shaped film substrates, comprises wind-off (7) and take-up rollers (8) guided between the substrates under a strip tensile stress and a coating station arranged between the rollers and comprising two coating sources (5) in the area of a coil coating process, in which the strip is guided between the wind-off roller and take-up roller. The coating sources are arranged toward the strip flow one behind the other and in a coating side of the film substrate. A supporting element is arranged between the sources on a rear side (11) of the substrate. The arrangement for coating band-shaped film substrates, comprises wind-off (7) and take-up rollers (8) guided between the substrates under a strip tensile stress and a coating station arranged between the rollers and comprising two coating sources (5) in the area of a coil coating process, in which the strip is guided between the wind-off roller and take-up roller. The coating sources are arranged toward the strip flow one behind the other and in a coating side of the film substrate. A supporting element is arranged between the sources on a rear side (11) of the substrate and produces the supporting force, which results the strip tensile stress. The substrate is freely strained between two supporting elements. More than two coating elements and corresponding supporting elements are arranged. The substrate has a polygonal surface in cross section. A heat absorption element (6) is arranged in the area of two coating sources. A supporting element is formed with supporting rolls (3) present in its axis of rotation transverse to the direction of motion of the substrate. The supporting rolls are formed as cooling roll from a cooling agent or as spherically shaped stretcher roller. The supporting element is formed as: a sliding block lying transverse to the direction of motion of the substrate; a gas flow element producing an air circulation between the rear side and the supporting element; and a magnet element or electrostatic element arranged at a distance between the rear side of the substrate and the supporting element.