Coating press apparatus

Details Coating press apparatus Coating press apparatus

D - Textiles, Paper

21

H

117/115, 32/3

D21H 21/28 (2006.01) D21H 23/28 (2006.01) D21H 23/56 (2006.01) D21H 23/60 (2006.01)

Patent

CA 1337857

A coating press apparatus is disclosed for coating a first and second side of a pressed web formed in a forming section of a papermaking machine. The apparatus includes a first press roll which defines a smooth imperforate first surface. The first surface cooperates with the first side of the web. A first backing roll cooperates with the first press roll for defining therebetween a first nip for the passage therethrough of the web. A first felt supports the web during passage through the first nip and a first short-dwell coater applies a coating directly to the surface of the first press roll upstream relative to the first nip such that a smooth and even first layer of the coating substance is applied to the first side of the web during passage of the web through the first nip. A second short-dwell coater is disposed downstream relative to the first nip for applying a smooth and even second layer of coating substance to the second side of the web such that the first and second sides of the resultant pressed web exhibit a higher coating content than the coating content between the first and the second sides thereby enhancing the surface properties and resulting printability of the web.

571269

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