Patent DE-102007000782-A1 (DE)
Title: Device for applying two layers of curtain application medium on moving paper-, cardboard- or other fibrous web, comprises two applicator nozzles for the medium in gravitational direction, and inclined slide plate arranged below the nozzles
Inventor: UEBERSCHAER MANFRED
IPC: D21H23/48
Filed: 2007-09-27
Abstract: The device for applying two layers of curtain application medium (3.1, 3.2, 3.3) on a moving paper-, cardboard- or other fibrous web, comprises two applicator nozzles (2.1, 2.2, 2.3) arranged consecutively parallel in a machine direction (MD) and extending over the width of the machine, for applying a layer of the application medium in a gravitational direction, and an inclined slide plate (4) arranged below the application nozzles. The applicator nozzles are combined to an applicator nozzle unit (11), comprise equally formed component, and are detachably coupled together. The device for applying two layers of curtain application medium (3.1, 3.2, 3.3) on a moving paper-, cardboard- or other fibrous web, comprises two applicator nozzles (2.1, 2.2, 2.3) arranged consecutively parallel in a machine direction (MD) and extending over the width of the machine, for applying a layer of the application medium in a gravitational direction, and an inclined slide plate (4) arranged below the application nozzles. The applicator nozzles are combined to an applicator nozzle unit (11), comprise equally formed component, are detachably coupled together, are adjustable to each other in vertical direction, and are non-positively or positively connected together. The adjustability of the applicator nozzles is integrated among each other in the connection of the applicator nozzles. The applicator nozzles are designed as a one-piece part or multi-parts comprising two applicator nozzle elements, which are formed from an applicator nozzle element of another applicator nozzle. The applicator nozzle element is designed as a plate-shaped element. The applicator nozzle is provided in an application head (16.1, 16.2, 16.3), which comprises a distributor channel (17.1, 17.2, 17.3), which is connected with the applicator nozzle via an inlet channel. The application head is formed in multi-parts comprising a first and a second application head component, and comprises equally formed component. The application head component, which is arranged in the machine direction, of the first and last application head is formed from an application head housing. The applicator nozzle is adjustable in a gap width of 0.2-0.4 mm, where the gap width is profiled with a division of 50-200 mm. The application curtains are connected at the slide plate under formation of an application medium layer. Curtain guidance parts provide the curtains on an area of the slide plate lying in the machine direction, where the slide plate forms an outline edge, is inclined at 30[deg] with respect to a horizontal level and is adjusted parallel to its surface and tiltable. The distance between the surface of the slide plate and the application nozzles is changed. The slide plate is mounted at a guidance. The guidance and the application nozzle comprise a common bearing. The height of the slide plate is adjustable. The structural unit is indirectly mounted on a supporting frame and parts of the supporting frame are a component of the application nozzle. The application nozzle comprises nozzle lips, which are implemented as separate, exchangeable strip-type elements, which extend over the width of the application device.