Curtain coater

Details Curtain coater Curtain coater

D - Textiles, Paper

21

H

D21H 23/48 (2006.01)

Patent

CA 2710557

Curtain coater for discharging coating medium in the form of a curtain moving substantially under the force of gravity onto a moving paper or board web, comprising a hopper (1), which has a cavity (7) extending along a discharge width, to which the coating medium is fed via at least two feed lines (12) which each have a device for adjusting the volume flow of coating medium fed in, and a flow channel (6) which discharges the coating medium via an outer slot as a curtain, wherein the flow channel (6) is broken down into a large number of individual widening guide channels (6.1 to 6.n) of a diffuser block which, on the inlet side, adjoin a cavity (7) subdivided along the discharge width, at least in some regions, into sections (7.1 to 7.n), each of these sections (7.1 to 7.n) being connected to a feed line (12) and having a pitch which spans a plurality of guide channels (6.1 to 6.n) of the diffuser block.

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