Process for the coating of roll product

Abstract

The invention relates to a process for the production of multilayer composites and to a production plant (12, 60) for this purpose. The multilayer composites comprise at least one substrate web (64, 66), at least one bonding layer, and at least one polyurethane layer which has capillaries which extend through the entire thickness of the at least one polyurethane layer. First, at least one polyurethane layer is produced in a matrix (15), with passage through at least one coating unit (26, 30) and through a plurality of heating units (24, 28, 32). The matrices (15) thus treated are then introduced (76) into an input point (74) of a transfer section (60) for substrate web (64, 66). A structured side (78) of the matrix (15) is applied onto the substrate web (64, 66) passing continuously through the transfer section (60). Treatment of a composite made of the matrix (15) and of the substrate web (64, 66) takes place in a heatable press device (82) with transfer of the at least one polyurethane layer from the matrix to the upper side of the substrate web (64, 66). Finally, the matrix (15) is removed from the substrate web (64, 66), and transferred to a treatment section (12), and the substrate web (64, 66) is wound up at a wind-up unit (100) after removal of the matrix.

Dependencies are inferred from the claim text.