Multicolored film production, for use e.g. as decorative PVC film for automobile interiors or in synthetic leather, by inverted coating method including application of side-by-side plastics charges of different colors

摘要

In the production of a multicolored film (A) by coating a supporting structure (I) with a first liquid to pasty plastics layer (L1), applying a second plastics layer, optionally applying further layers. drying, removing (I) and lacquering and structuring the underlying surface, (L1) is applied in controlled flows of several simultaneous, side-by-side plastics charges of different colors, kept separate until just before adhesion to (I). Production of a multicolored film (A) by an inverted coating method involves coating a supporting structure (I) with a first liquid to pasty plastics layer (L1), applying a second plastics layer (preferably a foam layer) (L2) to (L1) and optionally applying further lacquer or adhesive layers (L3) to (L2). After sufficient drying of the laminate, (I) is removed and the underlying surface of the laminate is lacquered, provided with a surface structure (preferably by embossing) and optionally cut. (L1) is applied to (I) in several simultaneous, side-by-side plastics charges of different colors, with the different plastics charges being kept separate until just before adhesion to (I) and the mass flows being controlled. An independent claim is included for apparatus for the process, with at least one coating roller over which (I) is guided, which includes one or more subsequently openable, separate coating or delivery tanks for supplying liquid plastics material, above and across the width of the coating roller. Opening of the coating tanks is adapted to the curvature of the roller surface, and the outflow side wall of the tank is formed as a coating blade or knife guided up to the zenith region of the roller. The gap between (I) and the coating blade is adjustable to control the mass flow.