D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 23/70 (2006.01) B05C 3/18 (2006.01) B05C 9/12 (2006.01) B05C 11/02 (2006.01) D21H 23/56 (2006.01) D21H 25/12 (2006.01) B05C 11/04 (2006.01)
Patent
CA 2165974
Disclosed are a process of and an apparatus for producing paper webs coated on both sides, in particular so-called LWC- papers, in a paper making machine. Firstly, one side of the paper web (1) is coated in a first coating station (8) and then dried. Subsequently, the other side of the paper web (1) is coated in a second coating station (25) and then dried. Each coating station (8, 25) includes an application role (10), an opposing roll (11) and an application unit (13) arranged on the application roll for indirectly coating the paper web. The metering of the coating mass on the application roll (10) takes place by means of a smooth roll doctor. The coated paper web (1) is calendered by means of an on-line calendering unit (60).
Sont décrits un procédé et un dispositif pour produire des bandes de papier couchées deux faces, notamment des papiers couchés légers pour impression, dans une machine à fabriquer du papier. Tout d'abord, une face de la bande de papier (1) est revêtue dans un premier poste de couchage (8) puis séchée. Ensuite, l'autre face de la bande de papier (1) est revêtue dans un deuxième poste de couchage (25) puis séchée. Chaque poste de couchage (8, 25) comporte un rouleau applicateur (10), un contre-rouleau (11) et, monté au niveau du rouleau applicateur, un mécanisme applicateur (13) permettant un couchage indirect de la bande de papier. Une racle tournante lisse permet de doser la pâte de couchage sur le rouleau applicateur (10). La bande de papier couchée (1) est glacée à l'aide d'une calandre de satinage en ligne (60).
Aksnes Fredrik
Berg Anette
Kustermann Martin
Reich Stefan
Riepenhausen Bernd
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