Patent ID: 7169445
Filing Date: 2007-01-30
Classification: B05C,Y10S

Abstract:
1. A method for curtain coating of a moved substrate wherein a substrate is moved below a hopper means providing one or more liquid coating materials in the form of a free-falling curtain impinging the substrate at a dynamic wetting line, wherein edge guide elements are used, wherein the curtain is formed from a coating film that is formed on a slide of said hopper, wherein a slide edge guide has at least one contact area of its surface directed towards the coating film on the slide and said contact area comprises a plurality of openings for flow of an auxiliary liquid, which openings are coplanar with said contact area, and wherein the auxiliary liquid is injected directly from the openings in said contact area into contact with the coating film on the slide and is injected essentially parallel to the flow direction of the coating film by means of one or more of said openings at an edge of the coating film while said film is moving along said slide of said hopper means.