Ilford Imaging Switzerland Gmbh

Ilford Ag

Maurice Pasquier

Markus Gueggi

Gilbert Gugler

Peter Schweizer

A method for curtain coating a moving web () is described, wherein the total amount of the coating liquids and of the lateral flow liquid, added perpendicular to the lateral extension of the curtain (), is deposited on the moving web () under formation of only a minimally thickened bead, wherein there is no need to separate the lateral flow liquid before impingement on the moving web. The corresponding device incorporates in the edge guides () a groove () having incorporated, in its surface, channels parallel to the direction of the falling curtain (). The curtain is stabilized with the lateral flow liquid which is supplied to the groove (), the real guide surface of the curtain, perpendicular to the lateral extension of the curtain ().

Method and device for coating a moving web

A method for curtain coating a moving support with a liquid coating material. An evacuating device is utilized to evacuate air carried along with the moving support. A device for carrying out the method includes a pourer having a pourer lip, a pouring roll carrying a support, and an evacuating device which is disposed in front of the curtain. The evacuating device includes an evacuating blade having a front edge facing the curtain. The front edge is provided with a slot which is connected to a vacuum installation. The method and device allow a substantial stabilization of the curtain at its point of contact with the support.

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La Tour-de-Trême, Switzerland

Maurice Pasquier